HEAT PUMP MANUAL - Dunster · HEAT PUMP MANUAL 2014 DIE FAMI HEAT PUMPS FOR YOUR WELLBEING. 1 2 3 4...

DIE ENERGIEFAMIL

www.idm-energie.com

HEAT PUMP MANUAL 2014

DIE ENERGIEFAMIL

HEAT PUMPS FOR YOUR WELLBEING

1

2

3

4

5

6

7

8

9

10

11

12

13

D I E E N E R G I E FA M I L I E

(C) IDM ENERGIESYSTEME GMBH

Introduction

Heat pump manual

Intro

du

ction

The IDM Energiefamilie - Heat From

Nature

37 years of experience in manufacturing heat pumps and fresh hot water systems

IDM - these three letters stand for 37 years of knowledge and experience for future-proof and comfortable heating.

Since 1977 IDM has been empowering owners of our heating systems - from single households up to industrial facilities - with savings for life: heating and cooling with heat pumps, state of the art fresh water equiments in connection with solarthermics.

Technology, construction, manufacturing and sales originate from the same company. Quality, cer-tified products supported by the highest levels of technical knowledge has created high demand for IDM products across Europe. Exclusive on-site sales and maintenance partners provide consultation, planning, installation, operation and maintenance support.

The complete power spectrum - heat pumps ranging from 5 up to 500 kW

With more than 150 different system solutions ranging from 5 up to 500 kW the IDM energy family sets the benchmark for heat pumps, fresh water equipment and solar thermal designs. Brine, ground water, direct evaporation and now air: IDM Energiesysteme GmbH is familiar with all heat sources. With more than 37 years experience in designing and manufacturing heat pumps IDM is one of the leaders in its field.In the future the whole energy supply and circula-tion will be more and more integrated into houses. Smart Grids - intelligent powernetworks - take care of consistant power consumption - by reduceing po-wer peaks. IDM TERRA Heatpumps with Navigator regulation are already today up to this. IDM heat-pumps can already save the power as heat from the on site photovoltaics system.

MCS HP0035 • Heat Pumps

1

2

3

4

5

6

7

8

9

10

11

12

13



Introduction

Heat pump manual

Intr

od

uct

ion

HGL. The smart heat pump

IDM utilises what others waste: 15% of the gai-ned heat energy are available at a temperatur of 60°C. The TERRA HGL pumps hot gas directly from the top of the compressor through a separate plate heat exchanger which feeds the IDM Hygi-enik tank.

Introducing the latest members of the IDM energy family

TERRA ML 8-18 Complete (HGL)

The TERRA ML 8-18 Complete (HGL) in split design with the patented CLC-Technology (Controlled In-verter Cooling) produces via the speed controlled compressor only the energy, which is needed.

NAVIGATOR® Pro 2.0

The NAVIGATOR® Pro 2.0 raises the living com-fort and optimizes the energy usage, as a result of combining the controll of each room with the heat pump controller. Our target is high comfort with low energy consumption by including weather forecasts, user behavior, building characteristics and green electricity. You decide at which time comfort is more important than energy saving and at which time the system can do the energy optimization.

Apps for accessing the System

The Apps for IOS and Android let you look up the current settings like operation mode, all temperatures,possible troubles or the heat flow volume on your smartphone.You have the possibility to configure the settings for the time programs and operation modes.Remote Maintenance is possible for service technicians over a secured layer.

*einstufig

ZONE 619°C

ZONE 524°C

ZONE 222,5°C

ZONE 120°C

ZONE 418°CZONE 3

21,5°C

Sound ReductionSystem

1

2

3

4

5

6

7

8

9

10

11


(C) IDM ENERGIESYSTEME GMBHHeat pump manual

Tab

le o

f con

ten

ts

TABLE OF CONTENTS

PHYSICAL AND TECHNICAL BASICS 2

1. THEORY OF HEAT PUMPS

1.1. How heat pumps work 61.2. Principle of funtion of a heat pump 61.3. COP (coeffi cient of performance) 81.4. Seasonal performance factor, SPF 81.5. Required power of the heat pump 9

2. OPERATING PARAMETERS

2.1. Flow temperature 122.2. Pressure drop 142.3. Heat pump operating modes 15

3. HEAT SOURCES

3.1. Soil 203.2. Water 273.3. Air 32

4. HEATING / COOLING 4.1. Heating 334.2. Cooling 35

5. HEAT PUMP TYPES

5.1. Brine heat pumps 385.2. Ground water heat pumps 525.3. Air source heat pumps 66

6. HEAT EXTRACTION SYSTEMS

6.1. Horizontal heat exchanger 1326.2. Borehole heat exchanger 1356.3. Ground water systems 136

7. HEAT PUMP CONTROL

7.1. Navigator-Control 1387.2. Smart Grid 1487.3. Navigator Pro 2.0 1507.4. Smart Web 153

8. IDM HYGIENIK

8.1. General information 1548.2. Hygienik 1578.4. Heating buffer 167

1

2

3

4

5

6

7

8

9

10

11



Table of concents

Heat pump manual

Tab

le o

f co

nte

nts

9. COMMIOSSIONG

9.1. Requirements for the installation location 1709.2. EMC - electromagnetic compatibility 1709.3. Heating water quality 1719.4. Installation of air and dirt separator 1729.5. Tips for start-up 1729.6. Scope of work at start-up 173

10. MAINTENANCE

10.1. Maintenance periods 17510.2. Service and maintenance 17510.3. Maintenance check list 17510.4. FAQs for Navigator-control 176

11.GLOSSARY

Dimension drawing TERRA SW 6 - 17 (HGL Complete) 180Dimension drawing TERRA SW 20 - 42 Twin (HGL) 180Dimension drawing TERRA SW 18 H & 28 H 182Dimension drawing TERRA IL Complete (HGL) 183Dimension drawing TERRA CL 20 & 30 Twin HGL 185Dimension drawing TERRA ML 6-8 Complete 186Dimension drawing TERRA ML 8-13 & 11-18 Complete (HGL) 187Dimension drawing TERRA AL 17-32 Twin 188Dimension drawing TERRA AL 60 Max 18911.1. Safety heat exchanger for groundwater systems 19011.2. Heat exchanger for cooling 19211.3. Defi nitions index 19311.4. Norm index 202

1

2

3

4

5

6

7

8

9

10

11



The most impor tant terms at a glance

Bivalent operation

Providing heat energy with two different heating systems is called bivalent operation. The bivalent operation mode is the opposite of monovalent.

Brine

Brine is a mixture of water and an anti-freeze and is used as a heat carrier in heat pumps.

Buffer tank

Buffer tanks buffer the heating energy in order to bridge irregularities during heat production and heat provision.

Buffer tanks can be combined for larger capaci-ties.

Compressor

A compressor serves for compressing and pum-ping gases.

Condensation

Condensation is the process where gas changes its aggregate state from gas to liquid.

Condenser

A condenser is a functional unit for extracting the heating energy from a compressed gas. During the process of condensing the gas turns from the gassy into the liquid state.

Condensing temperature

The condensing temperature depicts the point where gases change to the fluid state.

COP (Coefficient Of Performance)

Naturally, energy always uses to fl ow from a higher to a lower potential. Heat pumps work in the oppo-site direction. For this, they need additional energy which is provided as electricity.

COP describes the ratio of the provided heating po-wer and the amount of electrical energy that a heat pump consumes for providing that heating power at a standardised working point.

For heat pumps, the COP lies within the range of 3 to 6 and depends on the operating point of the heat pump.

Efficiency

The efficiency is the ratio of gained energy (Pout = gain) and spent energy (Pin = effort).

EnEV

EnEV is the abbreviation for the german word „EnergieEinsparVerordnung“, a legal ordinance describing detailed how to reduce consumption of energy for heating buildings. The EnEV is valid since 1. February 2002.

Flow temperature

The flow temperature is the temperature of a heat transporting medium that is pumped to a heat emitting system.

Heat demand

The heat demand is the amount of ener-gy that is necessary to sustain the ther-mal level of a medium (eg. air, water).In order to determine the heat demand for hea-ting rooms, the standard EN 12831 has to be observed.

2

PHYSICAL AND TECHNICAL BASICS

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Heat pump

A heat pump is a system that extracts heating energy from earth, water or air and transfers this energy to a heat emitting system.

Heating power

The heating power is the amount of energy re-quired to sustain the thermal level of a heating medium. The heating power therefore depends on the environmental temperature which in turn has a decreasing temperature gradient from the heating element to the environment. By using an appropriate insulation, the slope of the tempera-tur gradient can be kept low thus reducing the required heating power.

Monoenergetic

Monoenergetic depicts the operation of a heat ap-pliance with a heat pump in conjunction with an ad-ditional energy source (eg. submersion tube heater).

Monovalent

This is operating mode is when the heat pump is the only heat delivery system to a heating appli-ance.

Nominal outdoor temperature

Lowest mean-value of two days of the air tem-perature at a location that is reached or fallen below 10 times in 20 years (values s.a. ÖNORM M7500, part 4). [Source: ÖNORM].

Performance factor

The performance factor describes the ratio bet-ween available heat energy and the required electrical energy.

Plate heat exchanger

A plate heat exchanger consists of several stain-less plates soldered to a unit. The channels in this unit are flown through by water and the refrige-rant fluid according to the counterflow principle.

Refrigeration capacity

The refrigeration capacity refers with the heat flow that is drawn from a heat source by the heat pump. The actual refrigeration capacity relates to heating power minus the consumed electrical energy by the heat pump.

Refrigeration medium, refrigerant

The refrigeration medium or refrigerant is the means used in the cirular flow of a heat pump. It serves for transferring heating energy from the heat source to the heating system.

The refrigeration medium is a particular fluid that evaporates at very low temperatures thus chan-ging its aggregate state from liquid to gas. As a result of compression the temperature of the gas increases. Extraction of the heating energy cools down the gas which subsequently turns back from it‘s gassy to it‘s liquid state.

Return temperature

The returning temperature is the temperature of the water that comes from the heat emitting system (eg. radiator) and flows into the heating system (eg. heat pump, oil-fired boiler).

Seasonal performance factor (SPF)

The seasonal performance factor describes the ratio of the amount of the heating power submit-ted by the heat pump over a whole year and the amount of electrical energy consumed for provi-ding the heating power during that period.

3

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

The seasonal performance factor therefore reflects the rate of use of the heat pump equipment.

Sound pressure

„Sound pressure“ describes the pressure variation that occur during transmission of acoustic signals through gases (usually air).

However, for the human eardrum the overall pres-sure is relevant which in its turn is the sum of the static air pressure and the sound pressure.

The physical symbol for the sound pressure is „p“, the physical unit is „Pascal“ (abb.: „Pa“).

Sound pressure level

The sound pressure level is defined by the ratio of a given sound pressure and a reference sound pressure. The pseudo-unit of the ratio is „decibel“ (abbrev.: „dB“).

Switch-over point

The switch-over point is the highest heating tem-perature a heat pump can provide.

When reaching the switch-over point, a secon-dary heating system (oil-/gas-burner or electrical heating) is engaged thus covering the required heat demand.

...(continued „The most important terms at a glance“)

4

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Conversion tables

Energy units

Power units

Length units

Formula symbols

Unit J kWh kcal

1 J = 1 Nm = 1 Ws 1 2,778 * 10-7 2,39 * 10-4

1 kWh 3,6 * 106 1 860

1 kcal 4,187 * 103 1,163 * 10-3 1

Unit kJ/h W kcal/h

1 kJ/h 1 0,2778 0,239

1 W 3,6 1 0,86

1 kcal/h 4,187 1,163 1

Unit Inch Foot Yard

1 39,370 3,281 1,094

0,0254 1 0,083 0,028

Parameter Symbol Unit

Length l, s, r m

Area A m2

Volume V m3

Mass m kg

Density r kg/m3

Time t s

Speed v m/s

Pressure p Pa = N/m2

Parameter Symbol Unit

Energy, heating energy W, Q J = Nm, kWh = 3,6 * 106 J

Heat fl ow Q W, kW, 1W = 1J/s = 1Nm/s

Temperature T K (Kelvin), °C (Celsius)

Sound performance LWA dB

Sound pressure level LPA dB

Effi ciency h -

Coeffi cient of performance (COP) -

5

1

2

3

4

5

6

7

8

9

10

11



The

ory

1.1. How heat pumps work

Humans usually feel comfortable at temperatures of about 20°C. In relative terms, higher tempera-tures are experienced as warm and hot, an lower temperatures are experienced as cool and frosty.

From a mere physical point of view a temperature of 20°C is neither cold nor warm. In fact, at a temperature of minus 273,15°C an atom does not have any kinetic energy. Therefore the temperature serves as a dimension for the movability of atoms and molecules respectively. A lower amount of kinetic energy can thus be regarded „cold“ and a higher amount of kinetic energy „warm“.

In practice heat pumps have the purpose of ext-racting the heat energy from a heat source. Apart from perfect conditions it does not matter to a heat pump whether the heat source has a temperature of 290°K or 270°K because the temperature of a heat source always „cools down“ when heat energy is extracted. The extracted heat energy is transported by a refrigeration medium and the heat level is increased through compression. The achievable temperature level depends on the kind of the refrigerant.

1.2. Principle of function of a heat pump

Heat pumps use special refrigerant types that eva-porate at very low temperatures and that have a high specific heat.

The cycle that the refrigerant runs through begins in liquid state. The influx of heat from earth, air or water makes the refrigerant evaporate at very low temperatures. The energy turns the state of the refrigerant from liquid to gas.

The compression energy then causes the tempera-ture of the gas to increase (analogy: air pump for a bicycle). The heat energy of the gas is now rea-dy for extraction, heating now becomes possible.

Celsius

cold

war

m

Temperature-difference depends onreference temperature

Heatamount

Heatamount

Kelvin

Individual perceptionof temperatures BEFORE

Heat source

heat extraction

AFTER BEFORE

Hot water

heating

AFTER

20°

30°

293°

303°

100° 373°

0° 273°

-10°

-273,15°

263°

0˙

20° 20°

30°

10°

comfortableΔT = 10°

ΔT = 10°

Fig.: Principle of heat production with heat pumps

6

1. THEORY OF HEAT PUMPS

1

2

3

4

5

6

7

8

9

10

11



THEORY OF HEAT PUMPS

Heat pump manual

The

ory

Here, extraction of the heat energy is done by aplate heat exchanger (condenser). This element consists of several thin stainless plates that are soldered to a closed unit.

The heating water and the refrigerant run through this unit according to the counterflow principle.

Heating becomes possible by extracting the heat energy throughout the heat exchanger.

The refrigerant cools down and changes the state back from gas to liquid. Finally, an expansion valve reduces the pressure of the refrigerant.

At this point, the refrigerant can continue the cycle from the beginning. The compressor keeps this cycle alive.

Ener

gyfr

om th

e en

viro

nmen

t

Hea

t

Soil collector Heat pump Heating system

EvaporatorCompressor

Condenser

Expansion valve

Fig.: Functioning principle of a heat pump

Fig.: Unsoldered stainless steel plates

Fig.: Profile of a plate heat exchanger

Fig.: Heat transition by counterflow principle

Cycle of theheat pump(cooling off)

Cycle of theheating circuit(heating)

Fig.: Working cycle of a heat pump

evap

orat

ing

expanding

condensing

g c

compressing

7

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

The

ory

1.3. Coeffi cient of performance, COP

A feature size of technical systems is the coef-ficient of performance. This size reflects the ratio between provided and consumed energy. As technical systems can never provide more energy than they consume, the coefficient of performance can never be more than 1.

The heating values of wood, carbon, oil or gas, the coefficient of performance can be determined by calculation. However, this physical guideline does not apply to heat pumps because they do not convert the aforementioned heating materials into heating energy. Quite contrary to this, heat pumps shift energy potentials of from a special source to another destination.

During this process heat pumps consume electri-cal energy. Therefore, the conventional formula for the coefficient of performance is replaced by:

In this case the COP can reach values larger than

1. Heat pumps in fact do reach COPs of appro-ximately 6.

Symbol Meaningcop Coefficient Of PerformanceQ

WPhProvided heat output

Pel

Electrical power consumption according to EN 14511

The coefficient of performance thus specifies how much heating energy is provided by a heat pump at a specific working point in relation to the consumed electrical energy. COP must not be confused with the seasonal performance factor (SPF).

1.4. Seasonal per formance factor, SPF

Seasonal Performance Factor describes the ratio of the amount of the heating power supplied by the heat pump over a whole year and the amount of electrical energy consumed to provide this power. This includes the energy consumed by va-rious heat pump components (eg. circular pump, controller, submersion tube heater etc.).

The seasonal performance factor therefore reflects the rate of use of the heat pump installation.

The seasonal performance factor depends on the installation type and can achieve values like:

– Air to water heat pump: 2 - 4 – Brine to water or water to water heat pump:

4 - 5

Symbol MeaningSPF Seasonal Performance FactorQ

abUsable heat energy

Pel

Consumed electrical energy per year

8

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

The

ory

1.5. Required power of the heat pump

The main goal for planning a heat pump installa-tion is knowing the required power for the heat pump. This required power depends on:

– the overall energy demand – type of the available heat source – the desired flow temperature – the operating mode of the heat pump – power blockings caused by power plants

For heat pumps precise planning is therefore es-sential. In addition to the required heat demand the provided heat amount of already existing heat sources should be taken into account.

Overal l energy demand (Qg)

The overall energy demand is made up of

– the heating energy demand of the building – the energy demand for heating water – the energy demand for special uses – a corrective factor

Heating energy demand (Qh)

The basis for determining the heating energy is the calculation of the heating load. Depending on the country the following standards have to be considered:

– EU-standard EN12831, calculation of the heat load

– D: DIN EN 12831, Sheet 1 – A: ÖNORM 7500 (B8135), Austria – CH: SIA 384.201,SIA 381/2, Switzerland

Beyond this, in Germany the directions of the EnEV apply to new buildings.

Experienced values can be used for an approxi-mate calculation. However, these values depend on several factors, amongst them:

– new or old building – specific regulations for thermal insulations – special building insulation – quality of the masonry

Note that different criteria may apply depending on a specific country. The following tables give an overview of the heating energy demands in respect of various building types.

In any case, remember that individual require-ments have to be taken into account. The more a building is used, the more such requirements should be taken into account. Moreover, severals factors should be considered such as the number of persons, use of whirlpools, showers, sinks, higher room temperatures etc.

In cases where there is an existing heating system, the heating energy demand can be approximated with the annual amount of oil consumption.

Qg = (Qh + QWW + QS) x Z

Symbol Meaning

Qg

Overall energy demand

Qh

Heating energy demand for the building

QWW

Energy demand for heating water

QS

Energy demand for special uses

Z Corrective factor for power blocks

9

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

The

ory

The follwing tables reflect the heating energy demand depending on building type:

References for Austria (Tirol) Special measures Specific heating energy demand

Old building, 1960 No thermal insulation 250 W/m2

Building regulations before 1998 No thermal insulation 150 W/m2

Building regulation after 1998 Normal thermal insulation 80 W/m2

Promotion of housing after 1998 Normal thermal insulation 65 W/m2

Promotion of economised houses Good thermal insulation < 50 W/m2

Promotion of highly economised houses really good thermal insulation < 36 W/m2

Promotion of passive house Best thermal insulation < 10 W/m2

References for Germany Special measures Specific heating energy demand

Old masonry No thermal insulation 120 W/m2

Building of 1980 Normal thermal insulation 70 - 90 W/m2

Building of 1995 Regulation for thermal insulation accor-ding to 1995

50 - 60 W/m2

New building According to EnEV 40 - 60 W/m2

KFW 60 building (Highly economised houses)

According to EnEV 2007 25 - 40 W/m2

KfW 40 building According to EnEV 2009 15 - 25 W/m2

Passive House ~ 10 W/m2

References for Switzerland Special measures Specific heating energy demand

Buildings until 1990 Average thermal insulation 40 - 80 W/m2

Buildings since 1990 Good thermal insulation 30 - 40 W/m2

Highly economised houses Best thermal insulation <= 25 W/m2

10

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

The

ory

Energy demand for domest ic hot water, QWW

The energy demand for hot water primarily depends on the number of persons in a household. Individual requirements affect consumption of hot water. Ac-cording to VDI 2067-12:2007, the consumption of hot water can be estimated with 30 - 60 l/day per person at a temperature of 40 - 60 °C. This results in additional heat demand of approximately 0,25 kW/Person.

According to the work sheet DVWG W553, heat losses in secondary returns should be noted and avo-ided. Secondary returns increase energy demand about up to 50%. In case where secondary returns are absolutely necessary, circulation pumps should only be activated in peak times.

Energy demand for special uses, QS

Special uses include swimming pools, whirl pools etc. Equipments like these have a great impact on the overall energy demand.

In case of swimming pools it should be establis-hed whether they shall be used year-round or only periodically. The energy required for room and pool heating needs to be taken into account. The energy demand for heating rooms, ventilation, humidification and de-humidification devices must be factored in and added to overall energy demand.

The energy demand requirements must be supplied by the designer of the swimming pool system.

Power-blocking, Z

Heat pump operation is often associated with low-tariff rates by energy providers. In turn, the energy providers have the right to suspend elec-trical supply for two hours each up to three times within a 24-hour period. Heat pumps must not operate during these times.

To provide constant cover during these periods, the heat pump needs to cover potential losses in advance. This demand is formally referred to by the corrective factor, Z:

Example:

An energy provider suspends the electrical supply three times a day for two hours.

Z = (24h / (24h - 2h x 3)) = 1,33

Put into practice, the sum of the energy demand for heating, hot water and special uses should be multiplied by Z.

Symbol Meaningd Duration of a power-block

n Number of power-blocks

Qg = (Qh + QHW + QS) x Z

11

1

2

3

4

5

6

7

8

9

10

11



Op

era

ting

pa

ram

ete

rs

Regardless of the choice of flow temperature, the main objective should be the provision of optimal thermal insulation. Improved insulation results both in lower operating costs and reduced invest-ment costs - higher output rates can be achieved with smaller heat pumps.

Therefore heat pumps are best suited for heating systems that operate with high output rates at relatively low temperatures, amongst them floor and wall heatings. Whilst temperatures as low as 30 - 35°C should be aimed for these purposes, much higher flow temperatures can be achieved with heat pumps.

It should be noted however that the demand for hot water increases in many cases in dependence of individual requirements and home comforts. The ratio of hot water can increase up to 40% in relation to overall consumption. Thus, efficient heating of hot water gains even further impor-tance.

2.1. F low temperature

The impact of f low temperature

When planning a heat pump system, it is pre-ferable to meet the heat demand with low flow temperatures. This will deliver considerable ener-gy savings. As a guideline, energy consumption can be as high as 2.5% per 1 degree less flow temperature.

The following diagram shows how the COP de-pends on the flow temperature.

Basically, the flow temperature can be reduced by taking the following measures, including:

– efficient thermal insulation of buildings – exchange windows with poor thermal

insulation – reduction of heat loss through excessive venti-

lation – installation of floor heatings with narrow

spacings of the pipelines

30 35 40 45

6

5

4

3

2

7

50 55 [°C]

[cop]

Coefficient of performance

Flowtemperature

Fig.: COP in relation to flow temperature

12

2. OPERATING PARAMETERS

1

2

3

4

5

6

7

8

9

10

11



OPERATING PARAMETERS

Heat pump manual

Op

era

tin

g p

ara

me

ters

as soon as the storage temperature reaches the desired HGL temperature minus 3°C. (The desired HGL temperature of 58°C therefore results in a threshold temperature of 55°C for storage).

Higher f low temperatures through HGL technology

In the refrigeration circuit of a heat pump a par-tial amount (approx. 12 - 15% hot gas) of the gained heating energy is available at higher temperatures. This amount can be used by an additional heat exchanger (HGL exchanger) with heat pumps that are equipped with HGL technolo-gy. Each time the heat pump operates, the water in the buffer tank (Hygienik) is heated up to an adjustable temperature (ie 58°C), thus providing even higher storage temperatures.

In general, there are two different types of ope-rating mode:

a) Heating mode

Purpose - supply of the heating circuits with heat.

The flow rate is controlled by the HGL valve, the pump operates at maximum speed. The HGL valve reduces the flow rate through the HGL heat exchanger so that the buffer tank can be supplied at the desired temperature (ie 58°C). Simultane-ously, the heating circuit can be supplied at the desired flow temperature (ie 35°C).

b) Buffer tank preferred mode

Purpose - heating of the buffer tank in order to ensure sufficient hot water.

The flow-rate through the HGL-heat exchanger is controlled by the speed control of the loading pump. The HGL valve operates in the „Buffer loa-ding“ position. In this mode the heating circuits are not supplied with heat. The speed of the pump and flow rate through the condenser and the HGL heat exchanger are reduced so that the buffer tank is being loaded at the desired HGL tempe-rature (ie 58°C). This operation mode is ceased

Circuit 1

Circuit 2

Separation plate

HygienikHeat pump

T

T

HW

CW

TERRA

T

T

SPF

T

T

T

Fig.: TERRA HGL with separating plate

1

2

3

4

CompressorHGL temperature

Flow-temperaturefor heating

Return-temperature

T

T

T

HGL exchanger with built-in sensor1

HGL valve2

Condenser with built-in water supplyand water return sensor

3

Loading pump (speed-controlled)4

Fig.: Internal detail view TERRA HGL

13

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Op

era

ting

pa

ram

ete

rs

Benef i ts of the HGL technology

IDM heat pumps with HGL technology enable economic operation of the heating systems and provide further benefits including:

2.2. Pressure drop

The heating and brine-sided pressure drops in the heat pump are specified by the desired nominal volume flow Vnom in the technical tables. In case of derivating flow rates the pressure drop evolves to the square of the flow-rate ratio.

Actual pressure drop can be determined using the following formula:

+ + High storage temperatures at low opera-ting pressures of the compressor

+ + Low electrical power consumption

+ + Increased compressor lifetime

+ + No risk of calcifi cation

+ + High hot water availability

+ + Short times for the supply of large amounts of hot water in „Priority buffer loading“ operation mode

Hint for TERRA with HGL:

The stated heating power is the sum of the power output in the heating and hot gas pipe.

0,5

0,5

1,0

0,0

2,0

1,5

3,0

2,5

4,0

4,5

3,5

0,75 1 1,25 1,5 1,75 2

Pres

sure

dro

p ra

tio (Δ

p / Δ

p

)

nom

1

Volume flow rate (V / V )nom1

nomV 1V

1Δp

nomΔp

Fig.: Pressure drop relating to fl ow rate

14

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Op

era

tin

g p

ara

me

ters

2.3. Heat pump operat ing modes

General information

Heat pumps can operate in different modes. The operating mode in question depends on:

– existing heating systems (eg gas, oil, wood etc.) – supplementary available local heat sources (eg

earth, water etc.) – shape of the yearly continuous

characteristic

Secondary heating appliances

Existing secondary heating appliances like oil, gas or wood-heating systems can be incorporated into the heat pump facility. Heat delivery systems like these can further deliver cost savings when heat pumps reach their operating levels.

Heat pumps can therefore operate in different modes.

Heat sources

Due to their relatively high source temperatures, ground and water source heat pumps operate very economically, even at low outdoor tempera-tures. Air source heat pumps however, have poor COPs when outdoor temperatures are low.

Heat sources include earth, water and air.

Yearly continuous characteristic

The yearly continuous characteristic reflects how many hours the outdoor temperature falls below a specific value within a whole year. It depends on the geographical location of an object, on the weather and on daylight hours.

1920960 2880 3840 4800

35

25

15

5

-5

-15

45

30

20

10

0

-10

-20

40

5760 6720 7680 8640

Outdoor temperature

[h]

8040 120 160 200 240 280 320 360 [Days]

[°C]

Fig.: Example of a yearly continuous characteristic

15

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Op

era

ting

pa

ram

ete

rs

Over view of operat ing modes

Monovalent mode

„Monovalent mode“ is the term used to describe heat pumps that work alone as the primary heat source. In monovalent mode, the heat pump pro-vides 100% of the energy required. This mode is suitable in conditions where relatively high source temperatures are available (ie earth). During mo-novalent operation, flow temperatures should not exceed temperatures of 60°C.

In practice, brine to water and water to water-heat pumps offer the best return for monovalent operation.

Bivalent mode

The combination of two heating systems is referred to as „bivalent mode“. In this case, the heat pump is supported by a secondary heating system.

„Bivalent mode“ can also describe the point up to which the heat pump can achieve the fully required heat load. If this point is achieved, the secondary heating system is activated. This point is also called „switch-over point“.

Air source heat pumps usually run in bivalent mode.

The bivalent mode has two subordinate operating modes:

Bivalent paral le l mode

In bivalent parallel mode the main demand of heating energy is provided by the heat pump. A secondary heating system completes the demand of missing heat energy. When the switch-over point is achieved, the secondary heating system is activated.

Monovalent Bivalent

Parallel bivalent Alternativ bivalent

Monoenergetic

Operating modes of a heat pump

Fig.: Overview of operating modes

25°Outdoor temperature

Building characteristic

-15°

Q [kW]

Max. requ. powerof a heat pump

Fig.: Monovalent mode

Heat pump

Additionalheating

25°Outdoor temperature-15°

Switch-over-point

Q [kW]

Buildingcharacteristic

Max. requ. powerof the heat pump

Max. requ. energy ofthe additional heating

Performance characteristicof the heat pump

Fig.: Bivalent parallel mode

16

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Op

era

tin

g p

ara

me

ters

Bivalent al ternat ive mode

In this mode the heat pump provides full heating ener-gy as long as the outdoor temperature is higher than the switch-over point. When the outdoor temperature falls below the switch-over point, the secondary hea-ting appliance covers the full load.

The lower the switch-over point‘s threshold level, the more the heating demand has to be covered by the heat pump. The relatively simple control of this mode is a benefi cial. As a drawback, the fi nancial and environmental benefi ts of this mode are lesser than in bivalent parallel mode.

Heat pumpAdditional heating

Max. requ. powerof the heat pump

25°Outdoor temperature-15°

Q [kW]

Max. requ. energy ofthe additional heating

Switch-over-point

Buildingcharacteristic

Performance characteristicof the heat pump

Fig.: Bivalent alternative mode

Monoenerget ic mode

In monoenergetic mode missing heating energy is provided by electrical current. The term „mono-energetic“ derives from the fact that the seconda-ry heat appliance (submersion tube heater) uses the same energy as the heat pump.

Usually air to water heat pumps are used in this case because they best supply the heat energy demand - at even extrem low temperatures. Ex-perience has shown that the switch-over point (ie. the temperature at which an alternative heating mode is activated) for monoenergetic facilities should be approximately at -5°C. According to DIN 4701 T10 about 2% of the overall workload is carried by the secondary heating appliance.

When designing a heat pump system, the yearly continuous characteristic should be taken into ac-count. The graph reflects precisely on how many days a year the outdoor temperature falls below a specific value.

17

1

2

3

4

5

6

7

8

9

10

11



He

at so

urce

s

Three environmental heat sources are avaiable for heat extraction: earth, ground and air.

The greatest amount of high temperature heat source should be selected to ensure both fi nancial and envi-ronmental viability.

Soil temperature in a depth of 1,2 m

Brine temperature of a ground probe

Averaged air temperature

0123456789

101112131415161718192021222324

-1-2-3-4-5-6

Augu

st

Sept

embe

r

Oct

ober

Nov

embe

r

Dec

embe

r

Janu

ary

Febr

uary

Mar

ch

April

May

June July

Augu

st

Annual heat source temperature (Example Vienna)

Soil temperature in a depth of 1,2 m with heat extraction

Brine temperature of a ground probe with heat extraction

Fig.: Heat source temperature over a whole year

353025201510

50

-5-10-15-20

Air

-5°C

Soil

0°C

Ground water

12°C

Temperature difference to be surmounted by the heat pump

Aver

aged

hea

t sou

rce

tem

pera

ture

in °C

T 40K T 35K T 23K

Fig.: Heat source temperature and temperature difference to be surmounted by the heat pump

18

3. HEAT SOURCES

1

2

3

4

5

6

7

8

9

10

11



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

Whichever of these three sources is ultimately selected depends on both local conditions installation costs. The preferable heat source should in any case allow minimal development costs and maximum temperatu-res.

The following table gives an overview of the benefi ts and drawbacks of the three heat sources - earth, water and air:

The following parameters have a significant influ-ence on the selection and costs of a specific heat pump type and its operation:

EARTH AIR WATER

Horizontal ground collector Borehole heat exchanger

Outdoor air Groundwater

Availability average good very good average

Permission required permission may be requi-red

permission required

no permission required

Temperature level good good average very good

Storability good very good - very good

Regeneration capacity good good very good very good

Development costs high very high low high

EARTH AIR WATER

Operating range • 1m depth: 5...17°C• 15m depth: 8...12°C

• -20...35°C • 7...12°C

Possible operation modes • monovalent• bivalent

• monoenergetic• bivalent parallel• bivalent alternative

• monovalent• bivalent

Development costs • Surface collectors• Boreholes• Pipe with circulating pump• Earthworks• Building operations

Outdoor installation:• Earthworks• Building operations• Covered pipes for laying into the ground, sound, drainage for condensation

Indoor installation:• Airfl ow• Building operations

• Authorisation process (water agency)• Suction and dry well• Pipework• Well pump• Earth works• Building operations

Other infl uence factors • Soil quality• Weather impact

• Groundwater fl ow direction• Water quality

19



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

3.1. Ear th

General information

Earth is an excellent heat source as it stores solar energy and is regenerated by rain water. Seasonal ups and downs have a slight impact thus providing suffi cient heat source energy even in winter.

The heat energy of the earth can be gained in two ways:

– heat gain from surface collectors – heat gain from boreholes

In both cases the energy demand for the heat extraction depends on the quality of the soil and its moisture content.

Heat extraction from soil is achieved by using an intermediate circuit consisting of plastic pipes. A mixture of water and antifreeze circulates in these pipes. This mixture is called brine. The actual heat exchange between the brine and the refrigerant takes place in the evaporator (a stainless plate heat exchanger) of the heat pump.

Planning guidel ines for the heat source „ear th“

Depending on the heat source, several factors be-come relevant for the planning and the construc-tion of a heat pump facility. The selection of sur-face collectors or boreholes influence both costs and the necessity to obtain permissions.

Moreover, the placement of boreholes with an exceeding length of 100 m falls into the mining scope (Germany). Surveys and special approvals therefore become necessary.

Ground loop should be installed several before the next heating period. This allows the soil to settle properly around the pipe. Moist, loamy soil is the best type for heat gain. Rainwater should not be drained away as it is required for soil re-generation. In the case of ground loop installati-on, the ground over it should not be sealed (eg asphalt). In any case, deep-rooted plant systems should be avoided.

Heat pumps which extract energy from soil are best operated in monovalent mode.

10°C

0°C

0m

5m

10m

15m

5°C 10°C

Soil temperature

Dep

th

15°C 20°C

1. February

1. November

1. May

1. August

Fig.: Seasonal soil temperature

20



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

1

2

3

4

5

6

7

8

9

10

11

Standard Standard description (Cursive: only available in German language)

VDI 4640 Thermal use of the underground - Ground source heat pump systems

EN 378-3 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site and personal protection

EN 378-4 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery

ÖNORM M 7755-2 Elektrische angetriebene Wärmepumpen - Besondere Anforderungen anWärmepumpen bei Nutzung von Grundwasser, Oberfl ächenwasser oder Erdreich

ÖWAV Regelblatt 207 Anlagen zur Gewinnung von Erdwärme

DIN 8901 Refrigerating systems and heat pumps - Protection of soil, ground and surface water - Safety and environmental requirements and testing

21



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

Ear th‘s sur face

Usage of earth heat from the shallow under-ground

Solar gain and rainfall supply most energy for ground source heat. At a depth of ten metres, the ground temperature is more or less constant. The heat afflux from the soil to the surface can be ignored.

Soil quality is a key influencing factor in ground source heat. Moist soil is superior to dry and san-dy soil. Where soil is loamy or moist, a reduced collection area is possible due to increased trans-fer ability.

Rainfall plays an essential role in soil regenerati-on. To ensure sufficient regeneration, the soil sur-face should not be sealed or built over. However, planting is possible. In any case, far reaching root systems, flooding and backwater should be avoi-ded as this leads to disturbances of the soil. This can damage the collectors and even buildings. Careless planning and pipe installation can result in frost-caused soil break-up.

Fig.: Structure of a heat pump system with ground loop

Fig.: Laying a ground loop

Fig.: Laying a ground loop

Fig.: Installation of collector pipe to the distribution well

22



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

1

2

3

4

5

6

7

8

9

10

11

Planning guidelines for the collector

Heat is extracted through a series of ground loops which should be buried in the soil at a depth between 1.2 and 1.5 metres. On removal of the surface layer to the required depth, the collector pipe should then be laid and covered with the previously removed soil.

One notable benefit of ground loop installation is that the pipe can be installed even where the surface is uneven. When planning the installation of a horizontal ground loop system, the following points should be considered:

Size of the installation area

The size of the installation area required depends on the heat extraction performance of its soil. Ac-cording to VDI 4640 the following table gives an overview of the specific heating capacities relati-ve to the soil quality:

IDM-Energiesysteme sets a requirement of 25W/m2 for the purposes of calculating the amount of ground loop required. Please note that this does not take into account particular soil quality.

The required collector area can be determined using the following formula:

Thus following:

Pipe distance

The distance between the pipe depends on the overall area required and soil quality. The mini-mum distance between pipe should be not less than 0,5 m in moist and 0,8 m in drier or san-dy soil. Adherence to these distances will ensu-res that the pipes cannot influence each other by freezing each other. In this way, there will be less likelihood of ice formation and the soil will be allowed a chance to regenerate.

Soil quality Specific heat extracting per-formance

Dry, non cohesive soil 10 W/m2

Moist, cohesive soil 15 - 20 W/m2

Dry, loamy soil 20 - 25 W/m2

Moist, loamy soil 25 - 30 W/m2

Water-saturated, loamy soil 40 W/m2

* based on 1800 operating hours per annum

Symbol Meaning

Amin

Required collector area

Q0

Refrigeration capacity of the heat pump

qE

Specific extraction capacity of the soil

QH

Heating capacity of the heat pump

PE

Power consumption of the heat pump

23



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

Furthermore, there should be enough space (>= 0,7 m) between the collector system components and the pipe and components that belong to the building (water, electrical current etc).

Pipe length

In order to achieve consistent hydraulic distributi-on, all pipe circuits should be the same length.

Warning ribbon

Warning ribbons should be attached approximate-ly 0,5 m above the collector pipe in order to avoid unintended damage through any subsequent soil works.

Layout plan

Before installation of the ground loop system, a de-tailed plan should be drawn up. During installation, the layout of the collector pipe should be documen-ted with photographs.

Benefits and drawbacks of using earth heat from shallow underground

Advantages Disadvantages

Ease of installation High space require-ment

Economic Cannot be sealed or built over

High year-round tem-perature

Relatively high COP at even low temperatures

24



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

1

2

3

4

5

6

7

8

9

10

11

Deep strata- Usage of ear th heat with borehole heat exchangers

If there is insuffi cient space to install a horizontal ground loop, a suitable alternative may be to extract heat from deeper in the ground. The benefi t is that the temperature of the soil is almost constant (10°C) below a depth of 15 m.The maximum possible amount of heat extraction depends on soil quality. The folowing table pro-vides an overview of the extraction performances relative to the soil quality:

Planning guidel ines for the usage of ear th heat in deep strata

In the case of vertical extraction of heat using boreholes, it is usually necessary to obtain a geological survey in order to establish soil data, expected soil and rock layers and possible maxi-mum heat that can be extracted.

If the geological information is unclear or insuf-ficient, it may be necessary to drill an exploratory borehole.

In cases where more heat is required, a „thermal response test“ should be conducted. This test can determine the appropriate amounts of boreholes required.

Depending on subsoil density, supporting casing need to be inserted. After installation of boreho-les, this casing should be backfilled with grout.

The dimensioning of the depth probes has to be done by the drilling company!

All borehole drilling should be carried out by a professional and experienced company!

Fig.: Heat pump system with boreholes

Soil quality Max. possible heat extraction capacity

Grit, sand, dry soil 20 W/m

Grit, sand 65 W/m

Clay, loam, moist 30 - 40 W/m

Massive limestone 45 - 60 W/m

Concrete sediment 55 - 60W/m

Granite 60 - 76 W/m

According to EN 15450

25



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

Multiple probes

In cases where multiple boreholes are required, they should be installed across the flow direction of the groundwater. In all cases, there should be a minimum of 5 m between each borehole.Where multiple boreholes are required, the fol-lowing should be taken into account:

Minimum distance of boreholes - 5 mFlow direction of ground water

Borehole

Fig.: Minimum distance between two parallel boreholes

! The distance between boreholes should be as great as possible. They should be a minimum of 5 m apart.

! Drilling depth should be based on the heat required, not on heat pump performance.

! A minimum distance of three metres from the site should be cleared to provide vehicu-lar access. Height access should allow for four metres, taking account of any slope. On steep access roads, the installer and owner should confer with the driller.

Advantages Disadvantages

Suitable where space is limited

High costs

Year-round high soil temperatures

Authorisation requi-rements must be met (eg. planning, water authorities)

Suitable for direct cooling

Relatively high COP, even during low tem-peratures

26



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

1

2

3

4

5

6

7

8

9

10

11

3.2. Water

General information

In this system water is sucked from a well and transferred to a heat pump. The water is chan-nelled through an evaporator in the heat pump and heat energy is extracted from the water. The water is cooled down by about 3 to 5 K and for-warded to the dry well.

Suction and dry well should be positioned in a mi-nimum distance of 15 m. The amount of extracted and returned water has to be the same.

As the temperature groundwater lies between 7 and 12°C and as this range is almost constant over the whole year, groundwater is well suited for gaining heat. However, as development costs are higher, using groundwater becomes more ex-pensive.

In order to extract groundwater, permission is ge-nerally required. However, the usage of ground-water is tied to several conditions, including ma-ximum amounts for extraction, water quality etc.

Water source heat pumps can both operate in monovalent and bivalent mode.

In order to avoid corrosion and frost damages to the heat exchanger inside the heat pump, IDM Energiesysteme prescribes the installation of a sa-fety heat exchanger. The us of this decouples the groundwater circuit from the brine circuit. Eventu-al damages in the groundwater circuit do not re-sult in consequential damages to the heat pump.

Planning guidel ines for the usage of groundwaterBefore a decision about the usage of groundwa-ter can be made, several preparational measures have to be taken. For example, geological condi-tions have to be sufficiently checked to answer the question whether usage of groundwater is gene-rally possible. Decisive factors are:

– water amount – water quality – water flow direction from suction

to dry well – considerations about eventual water protection

areas

The heating performance decides about how much groundwater is taken.For planning and deploying, both types of wells have to be considered (suction and dry well). The appropriate well type should be determined in co-operation with the well builder.

Fig.: Heat pump system with groundwater

TERRA

flow switch

pumpsafety heat exhanger

brine circuit(25% antifreeze mixture expansion vessel

safety valve

groundwater flow directionmin. 15m

disposal well extraction well

27



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

In order to check the temperature, amount and quality of the water, pumping of the water over a period of 48 hours in an experimental well is suggested. This experiment should be preferably conducted at the end of February.

Well access

The installation of a groundwater facility requi-res sufficient space for positioning of the dril-ling rig. The access road has to be kept clear over a minimum width of 3 m and a clear height of 4 m, taking into account of any slope.

3.2.0.1. Water quality requirementsIn heat pump systems with water as the heat source, chemical reactions of the ground and surface water with the heat pump system have to be considered. DIN 50930 is authoritative stan-dard for the corrosion of metallic materials in the interior of pipings, reservoirs and devices. In or-der to evaluate concrete-injuring fluids, grounds and gases, see standard DIN 4030 (part 1 and 2) for further details.

When using IDM Energiesysteme products, the following boundary values must be adhered to:

Substance Chem. sign

Amount[mg/kg]

Chloride CL < 100

Sulphates SO42- < 50

Nitrates NO3 < 100

Manganese, dissolved Mn < 0,1*

Dissolved carbonic assid CO2 < 5

Ammoniac NH3 < 2

Iron, dissolved Fe < 0,2*

Free chloride CL < 0,5

Oxygen O2 < 2*

Hydrogen sulphide H2S < 0,05

Sulphide SO3 < 1

Free chloride gas CL2 < 1

* Note the following warning

Consider Boundary value

Electrical conductivity > 50 μS/cm and< 600 μS/cm

ph-Value 6,5 - 9

Overriding the boundary va-lue of manganese and iron in conjunction with oxygen causes the evaporator and the supply pipes to become muddy and results in iron clogging of the dry well!

With the analyses of the ground-water the testing institute should be informed to test the solids which are important for the usa-ge of heat exchangers as safety heat exchangers.

28



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

1

2

3

4

5

6

7

8

9

10

11

Engineering requirements

Strainer

Especially surface- and water carries substances that have an polluting effect on the heat pump system. In order to ensure a continuous operation of the heat pump, all strainers and filters have to be checked and cleaned periodically.

Heat pumps of IDM need strainers with a mesh size of 0,3 - 0,6 mm.

Piping

All pipings should be installed with a descent to wards the wells. The correspondent areas have to frost proof. On the path from the suction well to the heat pump minimal heat drops have to be ensured. Water channelled from the heat pump to the dry well must not be further cooled down. In case of a higher mangenese or iron ratio, spe-cial care should be taken that no air gets into the groundwater circuit. To ensure this, the whole piping system has to be sealed air-tight.

All pipings that lead into and out of the building have to be isolated according to DIN 4140-2 in order to avoid the development of condensing water. Special attention should be paid to a mini-mal pressure drop in the pipings as well.

The piping should be stainless steel or plastic.

Well pump

The decision for the size of the well pump is main-ly determined by the water level in the well. The pressure drop through the heat pump, the plate heat exchanger and the overall pipe length has to be considered.

For the electrical connection a void piping from the heat pump to the suction well has to be pro-vided.

Manometer and thermometer

Manometer and thermometer serve to monitor temperature and pressure at the intake and outlet ahead of the mud guards and at the outlet of the heat pump. A thermometer should be attached at the heat pump‘s intake and outlet as well as a manometer ahead of the water strainer.

Water meter

A water meter may become necessary as subject to regulations. To avoid additional retrofittings, a suitable adapter should be provided already du-ring the planning phase. If required, this adapter is exchanged for the water meter.

29



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

Advantages and disadvantages of using groundwater at a glance

Standards, directives and permissions to be noted

Standard Standard description (Cursive: only available in German language)

VDI-4640 Blatt 1 und 2 Thermal use of the underground - Ground source heat pump systems

DIN 4140-2 Dämmarbeiten an betriebstechnischen Anlagen in der Industrie und in der techni-schen Gebäudeausrüstung - Ausführung von Wärme/Kältedämmungen

EN 378-3 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site and personal protection

EN 378-4 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery

ÖNORM B 2602 Wassererschliessung - Brunnen - Planung, Bau und Betrieb

ÖNORM 7755-2 Elektrische angetriebene Wärmepumpen - Besondere Anforderungen an Wärme-pumpen bei Nutzung von Grundwasser, Oberfl ächenwasser oder Erdreich

ÖWAV-Arbeitsbehelf Nr. 3 Wasserwirtschaftliche Gesichtspunkte für die Projektierung von Grundwasser-pumpenanlagen

ÖWAV Regelblatt 207 Anlagen zur Gewinnung von Erdwärme

Advantage Disadvantage

Year-round high tem-perature

Higher development costs

Highest COPs possible Subject to authorisation

Also suited for direct cooling

Unpredictable changes of water quality

30



HEAT SOURCES

Heat pump manual

He

at

sou

rce

s

1

2

3

4

5

6

7

8

9

10

11

Heat source ice storage tank

The 4 seasons allow us the usage of this renewa-ble heat source. The heat of the summer allows the storage of additional heat in water in the ice storage tank. The in the soil saved heat is a natu-ral heat insulation for the ice storage tank

With start of the heating period in autumn the water in the ice storage tank is slowly cooled down until the freezing point. At the conversion from cold water to ice, a not insignificant amount of heat, the heat of crystallisation is discharged.With the heat pump systen of IDM it is possible to use this energy source. You extract heat out of the storage and use it for the supply of the heatign system and domestic hot water production.

In the end of the heating period and at rising outdoor temperatures the cold of the ice can be used for cooling the house during summer

31



HEAT SOURCES

Heat pump manual

He

at so

urce

s

1

2

3

4

5

6

7

8

9

10

11

3.3. Air

General information

Due to its relative abundance, air is an ideal heat source. The lower installation costs associated with air source heat pumps are certainly a benefi t.

As a heat source, air can be used in two ways - outdoor air and exhaust air. In industrial facilities, there is also the possibility of using the increased heat potential from the ventilation and exhaust air.

Air to water heat pumps use typically air as a heat source.

Planning guidel ines for using ‚air ‘ as a heat source

Air to water heat pumps are suitable for interior and outdoor installations. Both situations have particular requirements.

In case a heat pump has to be installed on an up-per level, the fl oor should be suffi ciently load-bea-ring and vibration resistant. Indoor air source heat pumps require ventilation ducts for introducing and conducting away outside air. Unnecessary air re-sistance needs to be kept as low as possible by a streamlined airfl ow.

Outdoor installed heat pumps need less space. Se-veral guidelines have to be observed to avoid air short curcuits and noise emissions. The air must be able to fl ow freely and be able to blow away from the wall. An installation in interior courtyards or en-vironments that impede air exchange should gene-rally be avoided.

Air qual i ty requirements

Air source heat pumps have special fans that can push out large amounts of air at even low speeds. The blades have been constructed large enough for this purpose.

In case the blades of the heat exchanger get in contact with aggressive substances, damages mostly are inevitable.

Operating an air source heat pump therefore only makes sense in environments without aggressive substances, including ammoniac, chlorine, sulfur, salt-containing air and etc.

Figure:TERRA AL Twin with outdoor installation

32

1

2

3

4

5

6

7

8

9

10

11



4. HEATING / COOLING

Heat pump manual

He

ati

nh

/ c

oo

lin

g

Heating

Heating operat ion mode

The heating operation mode supplies heat for the following purposes:

– building heating – water heating – special applications (eg. swimming pools)

Bui lding heat ing

Low temperature heat distribution systems like floor, wall and ceiling heatings are best suited to heat pump systems. As these operate at very low flow temperatures, higher COPs can be achieved.

Therefore all heat distribution systems should be constructed for low flow temperatures (narrow pipe spacing, properly sized heat exchangers for air conditioning and swimming pool heating etc.). This results in energy savings of 2,5% per 1°C of flow temperature.

Further on it is necessary that the effective flow rate complies to the specified flow rate as the heat pump otherwise might switch on and off irregular-ly. In case the heating circuits shall be controlled with areal valves or with groups of mixers, a load balancing storage has to be installed.

Domest ic hot water heat ing

Heating of water for sanitary purposes plays an equitable role when operating heat pumps. In a household approximately the half of the required water has to be heated. The following table gives an overview of hot water usage:

Note that these values reflect average hot water requirements and vary depending on individual habits. For further references, please see stan-dard VDI 6003.

As the largest amount of hot water is drawn at a temperature of 40°C and drawing temperatures of more than 50°C are more rare, the tempera-ture of the hot water should be limited to 50°C in single or dual family houses. In case that higher temperatures are necessary (eg. sinks, basins), the required heating energy has to be provided from additional sources (oil/gas boilers, electric immersers, solar etc).

Purpose Water temp. in °C

Water-amount in L

Bath 40 120 - 150

Shower 40 30 - 50

Sink 50 10 - 20

Basin 40 1 - 5

33


1

2

3

4

5

6

7

8

9

10

11



He

atin

g / co

olin

g

Use of a buf fer tank

Irregular draws of hot water cause irregular ope-ratings of the heat pump. This results in a drops of COP.

Buffer tanks compensate these irregularities as they decouple the volume flows of the heat pump and heating circuits. They ensure a balanced operation and allow an increase of COP.

As the heating potential becomes very high at high outdoor temperatures, the spare energy is cached in the buffer tank and can be used later. This results in reduced heat pump cycles. Conver-sely, if the evaporator freezes due to low outdoor temperatures, the stored heat is transferred from the buffer tank to defrost the condenser.

Buffer tanks also are used to bridge power blo-cking times caused by energy providers. In case that these providers grant special tariffs they are eligible to disconnect the power line three times a day for two hours.

Hygienik

34

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

He

ati

ng

/ c

oo

lin

g

4.1. Cool ing

Direct cool ing using groundwater (passive cool ing, freecol ing)

As soil and groundwater temperature are much lower than air temperature in summer, cooling becomes possible via a floor, wall or ceiling heating. To enable this, a heat exchanger is installed into the groundwater and brine circuit respectively. The minimum cooling temperature (dew point) is controlled by a three-way-mixer. A temperature sensor in a room switches the pump when necessary.

Indirect cool ing through process-reversal (act ive cool ing)

To do this, the heat pump is fitted with a four-way switching valve which enables it to act as a cooling device. This operation mode requires a cooling buffer tank.

The minimum cooling temperature (dew point) is controlled by a three-way-mixer. The heat pump is controlled via a room temperature sensor.

The benefits and drawbacks of indirect cooling with process-reversal are:


Simple installation Limited cooling capa-city

No special heat pump required

Limited cooling tempe-rature

Lower operating costs

Enhanced soil regene-ration


Low costs as the heat pump is aready present

Costs for operating the compressor

Large cooling capacity Increased material costs.


With indirect cooling through process reversal, particular im-plementation of the heat pump is necessary. Cooling capacity in summer is approximately as high as its heating capacity in winter time.

The temperature must not fall below of the dew point as con-densation could cause water inside of the masonry. A saftey dew point sensor should be installed.

35

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

He

atin

g / co

olin

g

T T

T

T

T

M

M

M

rH%

TERRA

T

T

T

T

T

A

B

A B

B61

B51

M31

M41

B38B38B38

B41 B42

B1

M22

B32

M74

M61

B35

B33

B31

M73M16

B34

B43

B36

HygienikTERRA SW 6-17 HGL

OS

HW

CW

Separation plate

RE (A)

HC (A)

FS

Cooling-valve

Cooling-valve

HC-moduleinternal

RE (C)RE (D)

Throttlevalve

T T

T

T

T

M

M

P

rH% T

T

M

M

T

TERRA

T

T

T

T

A

B

B

B

A

A

P

B51

M31

M41

M61

B35

B33 B38B38

B41 B42

B1

M222

B32

M62

M62

B40B40

M15

B8

B31

M73M16

B34

B43

B36

HygienikTERRA SW Complete HGL P

Groundwater circuit

Coolingvalve

separation plate

Coolingvalve

Cooling buffer

Coolingvalve

RE (A)

HC (A)

HW

CW

OS

SHE

HC-moduleinternal available as accessory

RE (C)RE (D)

Throttlevalve

Direct cooling (brine or groundwater)

Indirect cooling (brine or groundwater)

36

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

He

ati

ng

/ c

oo

lin

g


Low costs as the heat pump is aready present

Costs for operating the compressor

No special heat pump required

Large cooling capacity


IDM system cooling (brine or groundwater)

Indirekt cool ing with the heat pump(standard version without process reversal ) – IDM-system cool ing

The cooling circuit is tied in on the heat source side (brine/groundwater circuit) There is always a cooling down of the circuit with the heat pump.

The waste heat on the heating side of the heat pump can be used for domestic hot water produc-tion or other heating (e.g pool), or is transfered via a heat exchanger in the soil. Passive cooling directly out of the soil is possible (depth probe/groundwater), without the pump running.

To minimize operating cycles a cooling buffer is necessary.

T

T

T

M

T

T

M

M

T

M

T

TERRA MAX HGL-P

Coolingvalve

Cooling buffer Buffer

Brine circuit

37

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.1. br ine heat pump

In this system, heat extraction from the soil is achieved through an intermedaite circuit of plas-tic pipe that channels the brine (mixture of water and antifreeze). The actual heat exchange is carried out in the evaporator (stainless plate heat exchanger) inside of the heat pump.

Brine heat pumps operating range

The minimum brine and maximum flow heat pump temperatures are bound to the operating range of the refrigerant and to the cooling circuit compo-nents (ie. compressor).

Uninterrupted operation is only possible within the operating range. In case the heat pump is run outside the range for longer periods, component damages may occur.

As a result of heat extraction through the ground loop or borehole, brine temperature can fall as low as -5°C (using refrigerant R410A and R134a).

-10 -5 0 5 10 15 20 25 30

30

40

50

60

20

[°C]

[°C]

R410A

62

Minimum brineinlet temperature -5°C

-20 -10 0 10 20 30 40 50

10

20

30

40

50

60

70

[°C]

[°C]

R134a

5. HEAT PUMP TYPES

Abb. Prinzip Sole-Flächenkollektor

Wärmeabgabe WärmepumpeWärmequelle

Wärmequelle Wärmepumpe Wärmeabgabe

Abb. Prinzip Sole-Tiefensonde

38

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

InstallationThe TERRA Complete HGL heat pump must be in-stalled in a frost-protected room by an approved specialist firm. The room temperature must be between 5°C and 35°C.

For the requirements for the installation room, please observe EN 378 parts 1 and 2.

It is not permissible to install the equipment in wet rooms, or in dusty rooms or rooms where there is a risk of explosion.

In order to avoid structure-borne sound transmis-sions, the TERRA heat pump must be installed on a horizontal, level and weight-bearing surface (concrete plate or similar). In the case of floating screed, the screed and the impact sound insula-tion must be recessed around the heat pump to ensure low noise levels when the heat pump is operating (see adjacent illustration).

The relevant laws, regulations and standards must be observed, in particular EN 378 parts 1 and 2 as well as BGR 500.

To avoid noise transmission via the pipework, the flexible connection hoses supplied are used for the heat pump flow and return, HGL line and for the brine inlet and outlet. The connection hoses must not be bent.

The TERRA heat pump,must be put on the delivered noise insulation pad.When delivered, the pads are located on the ma-chine.CAUTION:Do not confuse with packaging material.

use fl exible connection hoses

noise insulation pad

TERRA SW 6-17 (C)(HGL)

TERRA SW 20-42 Twin (HGL)

TERRA SW 18H and 28H

A gap of 60 cm must be observed at the front and right-hand side of the heat pump (see diagram below).

min. 600mm620mm

min

. 600m

m760m

m

min. 600mm760mm

min

. 600

mm

760m

m

12

34

1. cencret ceiling2. impact sound insulation3. Screed4. recess

39

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.1.1. br ine heat pump TERRA SW 6-17

TYP TERRA SW (C) (HGL)

Refrigerant R410A, FCKW-free

Heating output 8 to 17 kW

HP-fl ow temp. max. 62°C

Voltage 400 V/ 50 Hz

Heatpump in standard- or Complete HGL-version in the latest modern design with trendsetting tech-nology. The hot gas charging technology means that higher temperatures can be achieved for the reservoir via the integrated additional hot gas heat exchanger and the charging valve, as well as the special control sequence.

The TERRA SW Complete HGL is also available in a version with process reversal. For cooling op-eration (reversible mode) a four-way changeover valve is integrated into the refrigerant circuit for a process changeover switch. This is actuated via NAVIGATOR ® .

The compact design in the casing with optimum noise-insulation and with three compressor layers guarantees easy accessibility to all important components incl. the clearly arranged electrical wiring.

The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump

operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions, and a starting current limiter is integrated as standard..

1 Mixer/direct heating circuit can be operated using

NAVIGATOR® as standard. For 2 additional heat-

ing circuits an internal expansion module can be

integrated. Systems up to 6 heating circuits can be

implemented with an additional external expansion

for 3 mixer/direct heating circuits.

The integrated heat quantity calculation give in-formation about the energy consumption.

Additional the NAVIGATOR® allows many possible applications as the connection to www.myidm.at for remote maintainance and controlvia smartphones, a PC or the integration of a photovoltaic system.The NAVIGATOR® provides with the NAVIGATOR® Pro 2.0 the possibility for an ener-gy saving single room control with the heat pump.

The NAVIGATOR® enables a difference tempe-rature controlled solar heating, a layered solar supply is possible with an additional solar board, which is available as accessory.

The heat pump is factory-filled with refrigerant and tested for correct functioning and sealing.

40

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

TERRA SW 8- 17 Complete HGL

scope of delivery refigerant circuit:Hermetic scroll compressorcopper soldered stainless steel plate heat exchanger as evaporatorcopper soldered stainless steel plate heat exchanger as condenserhot gas heat exchangerelectronic expansion valverefrigerant collector sensor for high and low pressure monitoring

scope of delivery in general:Navigator control with control panelintegrated A-Label charging pump with non return valveintegrated A-Label brine pumpbrine expansion tanksafety assembly group and filling set for the brine circuitnon-return valve5 fl exible connection hosesall necessary sensors

TERRA SW 6 - 17

scope of delivery refigerant circuit:Hermetic scroll compressorcopper soldered stainless steel plate heat exchanger as evaporatorcopper soldered stainless steel plate heat exchanger as condenserelectronic expansion valverefrigerant collector sensor for high and low pressure monitoring

scope of delivery in general:Navigator control with control panelnon-returnvalve4 flexible connection hoses all necessary sensors all necessary sensors

T T

T

T

T

M

T

TERRA

T

T

T

T

T

HW

CW

separation plate

HygienikTERRA SW Complete HGL

RE (A)

HC (A)

FS

OS

Throttlevalve

T

T

P

T

M

TT

M

TERRA

T

TT

T

A

B

P

HW

CW

HygienikTERRA SW

REOS

FS

HC(A)

depth probebrine circuit

Throttlevalve

-10 -5 0 5 10 15 20 25 30

30

40

50

60

20

[°C]

[°C]

R410A

62


Applicat ion range heat ing Appl icat ion range cool ing

18 20 25 30

20

[°C]

[°C]

15

7

18

heat source inletheat source inlet

fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

41

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

TERRA-brine-heat pumps with R410A, technical data according to EN 14511

Type TERRA SW Unit 6 8 (C HGL) 10 (C HGL/P) 13 (C HGL) 17 (C HGL/P)

Heating capacity at S 0°C/W 35°C kW 5,83 7,56 10,58 13,36 17,18




Power consumption at S 0°C/W 35°C kW 1,31 1,66 2,20 2,78 3,64





COP at S 0°C/W 35°C 4,45 4,55 4,80 4,80 4,72

Only for reversible heat pumps

Cooling capacity at S 15°C/W 7°C kW - - 9,50 - 16,40

Cooling capacity at S 15°C/W 18°C kW - - 12,40 - 21,00

Power consumption at S 15°C/W 7°C kW - - 1,73 - 3,02

Power consumption at S 15°C/W 18°C kW - - 1,90 - 3,32

EER at S 15°C/W 7°C - - 5,49 - 5,43

EER at S 15°C/W 18°C - - 6,53 - 6,33

Size (H/W/D) mm 1330/620/760

Weight HGL/without HGL kg -/130 200/140 210/150 215/155 220/160

Heating water inlet and outlet R [A.G.] 1“ 1“ 1“ 1“ 1“

HGL connection R [A.G.] - 1“ 1“ 1“ 1“

max supply temperature °C 62 62 62 62 62

Nominal heating water fl owrate ΔT 5 K m³/h 1,00 1,35 1,85 2,30 2,95

Pressure drop heating side kPa 7 7 9 10 12

Remaining pressure of loading pump kPa - 59,8 55,3 45,2 60,0

Sound power/Sound pressure level in 5m dB (A) 44/25 46/27 46/27 49/30 51/32

42

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


Type TERRA SW Unit 6 8 (C HGL) 10 (C HGL P) 13 (C HGL) 17 (C HGL P)

Brine inlet and outlet R [A.G.] 1“ 1“ 1“ 1“ 5/4“

Nominal brine volume circulated ΔT 3 K m³/h 1,4 1,80 2,60 3,45 40,5

Pressure drop(brine) kPa 15 16 20 16 21

Residual pressure brine pump (at Complete) kPa 44 40 28 43 35

Brine pump (at TERRA C HGL eingebaut) - WILO Stratos 25/1-7 WILO Stratos 25/1-8

Cable dimension 40 m length in one direction mm

32x2 32x2 40x2,3 40x2,3 50x2,9

Number of drillings 3 4 5 6 7

Total pipe lenght m 300 400 500 600 700

Manifold length mm 180 240 300 360 420

Brine fi lling capacity (mixture) lt 105 140 175 210 245

Refrigerant R410A R410A R410A R410A R410A

Filling quantity refrigerant kg 1,30 1,60 1,85 2,12 2,40

Filling quantity compressor oil lt 0,7 1,20 1,20 1,20 1,90

electrical connection V/Hz 400/50 400/50 400/50 400/50 400/50

Operating current compresseor A 4,80 6,20 7,40 9,70 13,00

Starting current(with soft starter) A 12 16 19 24 33

Fuse main controll A 13 13 13 16 16

Fuse for controlling current A 13 13 13 13 13

Min size installation room1 m³ 2,95 3,63 4,20 4,82 5,45

1 If the min size of the installation room is undercutted, it has the be carried out as an engine room referring to EN 378.

Hint: With HGL Type the listed heating output is comprised of the heating amount for heating and hot gas.

Empfohlene Leitungsschutzschaltertypen: LSS 3-pol. Typ C, K Hint:For the dimensioning of the fuse to be connected in series in the primary circuit, the nominal current of the compressor and the on-site heat source pump as well as, if available, of the interme-diate circuit pump must be added.Recommended circuit breaker types: three-pole circuit breaker type C, K

43

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.1.2. br ine heat pump TERRA SW 20-42 Twin (HGL)

TYPE TERRA SW Twin (HGL)





The TERRA SW Twin HGL is a heatpump with 2 hermetic scroll compressors in the latest modern design with trendsetting technology. The hot gas charging technology means that higher tempera-tures can be achieved for the reservoir via the integrated additional hot gas heat exchanger and the charging valve, as well as the special control sequence.

The TERRA SW Twin HGL is also available in a version with process reversal. For cooling op-eration (reversible mode) a four-way changeover valve is integrated into the refrigerant circuit for a process changeover switch. This is actuated via NAVIGATOR® .


The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump operation, the entire heat pump system is actu-ated as required and is equipped with a variety

of monitoring, safety and reporting functions, and a starting current limiter is integrated as standard.1 Mixer/direct heating circuit can be operated using






The integrated heat quantity calculation gives information about the energy consumption.




44

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

TERRA SW 20-42 Twin HGL

scope of delivery refigerant circuit:2 Hermetic scroll compressorscopper soldered stainless steel plate heat ex-changer as evaporatorcopper soldered stainless steel plate heat ex-changer as condenserhot gas heat exchangerelectronic expansion valverefrigerant collector, sensor for high and low pressure monitoring

scope of delivery in general:Navigator control with control panelnon-return valvestable base frame5 flexible connection hoses all necessary sensors

TERRA SW 20-42 Twin

scope of delivery refigerant circuit:2 Hermetic scroll compressorscopper soldered stainless steel plate heat ex-changer as evaporatorcopper soldered stainless steel plate heat ex-changer as condenserelectronic expansion valverefrigerant collector, sensor for high and low pressure monitoring


TT

P

T

M

T

T

TERRA

T

T

T

TM

A

B

HygienikTERRA SW Twin HGL

OS

HW

CW

RE (A)

HC (A)

Buffer

FS

Throttlevalve

T

T

T

M

T

M

TERRA

T

T

TERRA Hwithout HGL

Hygienik

HW

CW

REOS

Buffer

FS

HC (A)

Throttlevalve

-10 -5 0 5 10 15 20 25 30

30

40

50

60

20

[°C]

[°C]

R410A

62



18 20 25 30

20

[°C]

[°C]

15

7

18


fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

45

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Type TERRA SW Unit20 Twin

Twin (HGL)26 Twin

Twin (HGL)/(P)35 Twin

Twin (HGL)42 Twin

Twin(HGL)/(P)

Heating capacity at S 0°C/W 35 °C kW 20,42 26,21 35,25 41,97




Power consumption at S 0°C/W 35 °C kW 4,18 5,35 7,11 8,82




COP at S 0°C/W 35 °C 4,89 4,86 4,96 4,76


Cooling capacity at S 15°C/W 7°C kW - 29,10 - 45,20

Cooling capacity at S 15°C/W 18°C kW - 35,80 - 55,40

Power consumption at S 15°C/W 7°C kW - 4,54 - 7,28

Power consumption at S 15°C/W 18°C kW - 4,86 - 7,86

EER at S 15°C/W 7°C - 6,41 - 6,21

Size (H/W/D) mm 1323/760/760

Weight HGL/without HGL kg 265/260 272/265 278/273 287/280

Heating water inlet and outlet R 6/4“ 6/4“ / 6/4“ 2“ 2“ / 2“

HGL connection R 1“ 1“/1“ 5/4“ 5/4“ / 5/4“

max supply temperature °C °C 62 62 62 62

Nominal heating water fl owrate ΔT 5 K m³/h 3,6 4,5 6,1 7,2

Pressure drop heating side kPa 11 14 10 10

Remaining pressure of loading pump kPa 51,7 35,0 68,3 63,3

Sound power/Sound pressure level in 5m dB(A) 50,9/31,9 53/34 54,4/35,4 55,1/36,1


46

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Type TERRA SW Unit20 Twin

Twin HGL26 Twin

Twin HGL/P35

TwinHGL42 Twin

Twin HGL/P

Brine in/outlet R [A.G.] 6/4“ 6/4“/ 6/4“ 2“ 2“ / 2“

Nominal brine volume circulated ΔT 3 K m³/h 5,0 6,3 8,1 10,2

Pressure drop(brine) kPa 12 13 14 14

Number of drillings 9 12 15 18

Total pipe lenght m 900 1200 1500 1800

Manifold length mm 540 660 900 1080

Brine fi lling capacity (mixture) lt 280 420 525 630

Brine pumpStratosPara 30/1-12

Stratos Para 40/1-8

Stratos Para 40/1-12

Stratos Para 40/1-12

Cable dimension 40 m length in one direction mm 50x2,9 50x2,9 63x3,6 75x4,3

Refrigerant R410A R410A R410A R410A

Filling quantity refrigerant kg 6,50 7,10 8,20 9,00

Filling quantity compressor oil lt 2,48 2,48 3,78 3,54

Electrical connection V/Hz 400/50 400/50 400/50 400/50

Starting current(with soft starter) A 23,76 25,74 36,72 39,24

Fuse main controll A C 16 C 20 C 32 C 32

Min size installation room1 m³ 14,80 16,60 18,60 20,50





47

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.1.3. br ine-heat pump TERRA SW 18H und 28 H

Heat pumps TERRA SW 18H and 28H operations where higher demand of domestic hot water is neede e.g. sports stadium, hotels, department complexes or for restorations, where higher flow temperatures are needed.


The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions, and a starting current limiter is integrated as standard.







TYP TERRA SW H

Refrigerant R134a FCKW-free

Heating output 18 and 28 kW


Voltage 400V/50Hz





48

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

TERRA SW 18H und 28H

scope of delivery refigerant circuit:suction gas cooled scroll compressorCopper soldered stainless steel plate heat ex-changer as condenserCopper soldered Stainless steel plate heat ex-changer as evaporatorElectronic expansion valveRefrigerant dryersensor for high and low pressure monitoring


T

T

T

M

T

M

TERRA

T

T

TERRA Hwithout HGL

Hygienik

HW

CW

REOS

Buffer

FS

HC (A)

Throttlevalve

-20 -10 0 10 20 30 40 50

10

20

30

40

50

60

70

[°C]

[°C]

R134a

Applicat ion range

heat source inlet

fl ow

tem

pera

ture

49

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

TERRA-brine heat pumps with R134a, technical Data acc. to EN 14511

Type TERRA SW Unit 18 H 28 H

Heating capacity at S 0°C/W 35 °C kW 18,00 27,43








Power consumption at S 0°C/W 35 °C kW 4,11 6,36








COP at S 0°C/W 35 °C 4,38 4,31

Size (H/W/D) mm 1323/760/760

Weight kg 260 280

Heating water inlet and outlet R [A.G.] 5/4“ 6/4“

max supply temperature °C °C 65 65

Nominal heating water fl owrate ΔT 5 K m³/h 3,1 4,9

Pressure drop heating side kPa 10 12

Remaining pressure of loading pump kPa 55,55 32,96

Sound power/Sound pressure level in 5m dB(A) 58/39 60/41

50

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


Brine in/outlet R [A.G.] 6/4“ 6/4“

Nominal brine volume circulated ΔT 3 K m³/h 4,2 6,8

Pressure drop(brine) kPa 20 21

Number of drillings 7 9

Total pipe lenght m 700 900

Manifold length mm 420 540

Brine fi lling capacity (mixture) lt 245 315

brine pump WILO TOP STG 30/1-7 WILO TOP STG 40/1-7

Cable dimension 40 m length in one direction mm 50 x 2,9 50 x 2,9

refrigerant R134a R134a

Filling quantity refrigerant kg 4,5 4,8

Filling quantity compressor oil lt 4,0 4,14

electrical connection V/Hz 400/50 400/50

Starting current(with soft starter) A 43 66

Fuse for controlling current A 13 13

Min size installation room1 m³ 18 19


TERRA-brine heat pumps with R134a, technical Data acc. to EN 14511


51

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.2. Groundwater heat pump

In this system water is extracted from a well and forwarded to the heat pump. The water is channelled through the evaporator (stainless plate heat exchanger) inside of the heat pump where the heat is extracted. The water cools down about 4°C and is forwarded to the dry well which is positioned in a distance of about 15 m from the suction well.

Operat ing range of ground water heat ing pumps

The minimal groundwater and the maximum fl ow temperature of the heat pump are bound to the ope-rational range of the refrigerant, to the freezing tem-perature of the groundwater and to the components in the refrigerating circuit (eg. compressor).

Uninterrupted operation is only possible within the operating range. If the heat pump is run outside the range for longer periods, component damage may occur.

As a result of heat extraction in the plate heat exchanger inside the heat pump, the groundwater exit temperature can drop as low as 3 - 4°C. To avoid frost damage on the plate heat exchanger, groundwater entry temperature must be at least 7°C at the nominal fl ow rate.

0 5 10 15 20 25 30 35

20

30

40

50

60

10

[°C]

R410A

[°C]62

Flow

tem

pera

ture

heat source inlet temperature

minimum ground waterinlet temperature 7°C

Wärmequelle

Wärmepumpe

WärmeabgabeZWT

Abb. Prinzip Grundwasser

0 5 10 15 20 25 30 35

10

20

30

40

50

60

70

[°C]

[°C]

R134a

Minimum groundwater inlet temperature 7°C

heat source inlet

fl ow

tem

pera

ture

52

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Installation

The TERRA Complete HGL heat pump must be in-stalled in a frost-protected room by an approved specialist firm. The room temperature must be between 5°C and 35°C.

For the requirements for the installation room, please observe EN 378 parts 1 and 2.

It is not permissible to install the equipment in wet rooms, or in dusty rooms or rooms where there is a risk of explosion.

In order to avoid structure-borne sound transmis-sions, the TERRA heat pump must be installed on a horizontal, level and weight-bearing surface (concrete plate or similar). In the case of floating screed, the screed and the impact sound insula-tion must be recessed around the heat pump to ensure low noise levels when the heat pump is operating (see adjacent illustration).

The relevant laws, regulations and standards must be observed, in particular EN 378 parts 1 and 2 as well as BGR 500.

To avoid noise transmission via the pipework, the flexible connection hoses supplied are used for the heat pump flow and return, HGL line and for the brine inlet and outlet. The connection hoses must not be bent.

The TERRA heat pump,must be put on the delivered noise insulation pad.When delivered, the pads are located on the machine.CAUTION:Do not confuse with packaging mate-rial.

A gap of 60 cm must be observed at the front and right-hand side of the heat pump (see diagram below).

TERRA SW 6-17 (C)(HGL)

TERRA SW 20-42 Twin (HGL)

TERRA SW 18H and 28H

min. 600mm620mm

min

. 600m

m760m

m

min. 600mm760mm

min

. 600

mm

760m

m

use fl exible connection hoses

noise insulation pad

12

34


53

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.2.1. Groundwater heatpump TERRA SW 6-17

TYP TERRA SW (C) (HGL)




Voltage 400V / 50 Hz

Heatpump in standard- or Complete HGL-version in the latest modern design with trendsetting technology. The hot gas charging technol-ogy means that higher temperatures can be achieved for the reservoir via the integrated ad-ditional hot gas heat exchanger and the charging valve, as well as the special control sequence.

The TERRA SW Complete HGL is also available in a version with process reversal. For cooling op-eration (reversible mode) a four-way changeover valve is integrated into the refrigerant circuit for a process changeover switch. This is actuated via NAVIGATOR® .


The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump

operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions, and a starting current limiter is integrated as standard..











54

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

T

T

P

T

M

T

M

TERRA

TP

T

T

T

T

A

B

HW

CW

HygienikTERRA SW

RE(A)OS

FS

Groundwatercircuit

SHE

HC(A)

Throttlevalve

0 5 10 15 20 25 30 35

20

30

40

50

60

10

[°C]

R410A

[°C]62

Flow

tem

pera

ture

h i l


18 20 25 30

20

[°C]

[°C]

15

7

18

Applicat ion range cool ing

heat source inlet

heat source inlet

fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

TERRA SW 8- 17 Complete HGL

scope of delivery refigerant circuit:Hermetic scroll compressorcopper soldered stainless steel plate heat exchanger as evaporatorcopper soldered stainless steel plate heat exchanger as condenserhot gas heat exchangerelectronic expansion valverefrigerant collector sensor for high and low pressure monitoring

scope of delivery in general:Navigator control with control panelintegrated A-Label charging pump with non return valveintegrated A-Label brine pumpbrine expansion tanksafety assembly group and filling set for the brine circuitnon-return valve5 fl exible connection hosesall necessary sensors

TERRA SW 6 - 17

scope of delivery refigerant circuit:Hermetic scroll compressorcopper soldered stainless steel plate heat exchanger as evaporatorcopper soldered stainless steel plate heat exchanger as condenserelectronic expansion valverefrigerant collector sensor for high and low pressure monitoring

scope of delivery in general:Navigator control with control panelnon-returnvalve4 flexible connection hoses all necessary sensors all necessary sensors

Applicat ion range heat ing

55

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

TERRA-ground water-heat pumps with R410A, technical Data acc. to EN 14511

Type TERRA SW Units 6 8 (C) (HGL) 10 (C) (HGL) 13 (C) (HGL) 17 (C) (HGL)

Heating capacity at W 10°C/W 35°C with safety heat exchanger kW 6,99 9,14 11,82 15,92 20,22

Heating capacity at W 10°C/W 35°C kW 7,11 9,80 12,90 17,52 21,50




Power consumption at W 10°C/W 35°C with safety heat exchanger kW 1,33 1,68 2,21 2,80 3,74

Power consumption at W 10°C/W 35°C kW 1,30 1,67 2,20 2,79 3,70




COP at W10/W35 with safety heat exchanger 5,25 5,44 5,34 5,70 5,40

COP at W 10°C/W 35°C 5,46 5,86 5,86 6,29 5,81


Cooling capacity at W 15°C/W 7°C kW - - 9,5 - 16,4

Cooling capacity at W 15°C/W 18°C kW - - 12,4 - 21,0

Power consumption at W 15°C/W 7°C kW - - 1,73 - 3,02

Power consumption at W 15°C/W 18°C kW - - 1,90 - 3,32

EER at W 15°C/W 7°C - - 5,5 - 5,4

EER at W 15°C/W 18°C - - 6,5 - 6,3

Size (H/W/D) mm 1330/620/760

Weight HGL/Basic kg 190/130 200/140 210/150 215/155 220/160

Heating water inlet and outlet R [A.G.] 1“ 1“ 1“ 1“ 1“

HGL connection R [A.G.] 1“ 1“ 1“ 1“ 1“

max supply temperature °C 62 62 62 62 62

Nominal heating water fl owrate ΔT 5 K m³/h 1,20 1,60 2,05 2,75 3,50

Pressure drop heating side kPa 7 8 9 10 13

Remaining pressure of loading pump kPa 61 54 50 35 52

Sound power/Sound pressure level in 5m dB (A) 44,5/25 46/27 47/28 49/30 51/32

56

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


Type TERRA SW Units 6 8 (C) (HGL) 10 (C) (HGL) 13 (C) (HGL) 17 (C) (HGL)

groundwater inlet/outlet R [A.G.] 1“ 1“ 1“ 1“ 1 1/4“

nominal gw volume circulated. GW ΔT 3 K m³/h 1,75 2,30 3,0 4.,05 5,1

pressure loss groundwater side kPa 15 15 16 13 21

size of the connecting pipes up to a length of 40 m

mm 32x2,0 40x2,3 40x2,3 40x2,3 50x2,9

refrigerant R410A R410A R410A R410A R410A

Filling quantity refrigerant kg 1,30 1,60 1,85 2,12 2,40

Filling quantity compressor oil lt. 0,70 1,20 1,20 1,20 1,90

electrical connection V/Hz 400/50 400/50 400/50 400/50 400/50

Operating current compresseor A 4,80 6,20 7,40 9,70 13,00

Starting current(with soft starter) A 12,00 15,50 18,50 24,25 32,50

Fuse main controll A 13 13 13 16 16

Fuse for controlling current A 13 13 13 13 13

Min size installation room1 m³ 2,95 3,63 4,20 4,82 5,45



Note:

At groundwater systems a safety heat exchanger set has to be installed obligatory!

Hint:For the dimensioning of the fuse to be connected in series in the primary circuit, the nominal current of the compressor and the on-site heat source pump as well as, if available, of the intermediate circuit pump must be added.Recommended circuit breaker types: three-pole circuit breaker type C, K

Note:

The extension set for groundwater pumps is available as accessory,and is neccessary to control the well pumpi

57

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.2.2. ground water heat pump TERRA SW Twin 20-42 (HGL) (P)

The TERRA SW Twin HGL is a heatpump with 2 hermetic scroll compressors in the latest modern design with trendsetting technology. The hot gas charging technology means that higher tempera-tures can be achieved for the reservoir via the integrated additional hot gas heat exchanger and the charging valve, as well as the special control sequence.

The TERRA SW Twin HGL is also available in a version with process reversal. For cooling op-eration (reversible mode) a four-way changeover valve is integrated into the refrigerant circuit for a process changeover switch. This is actuated via NAVIGATOR® .


The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions, and a starting current limiter is integrated as standard.1 Mixer/direct heating circuit can be operated using

NAVIGATOR ® as standard. For 2 additional heat-




for 3 mixer/direct heating circuits





TYPE TERRA SW Twin HGL

refrigerant R410A, FCKW-free

heating output 27 to 55 kW



58

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

TERRA SW 20-42 Twin HGL

scope of delivery refigerant circuit:2 Hermetic scroll compressorscopper soldered stainless steel plate heat ex-changer as evaporatorcopper soldered stainless steel plate heat ex-changer as condenserhot gas heat exchangerelectronic expansion valverefrigerant collector, sensor for high and low pressure monitoring


TERRA SW 20-42 Twin

scope of delivery refigerant circuit:2 Hermetic scroll compressorscopper soldered stainless steel plate heat ex-changer as evaporatorcopper soldered stainless steel plate heat ex-changer as condenserelectronic expansion valverefrigerant collector, sensor for high and low pressure monitoring


TT

P

T

M

T

T

TERRA

T

T

TM

A

B

P

T

T

T

HygienikTERRA SW Twin HGL

OS

HW

CW

RE (A)

HC (A)

Buffer

FS

Throttlevalve

0 5 10 15 20 25 30 35

20

30

40

50

60

10

[°C]

R410A

[°C]62

Flow

tem

pera

ture

heat source inlet temperature


18 20 25 30

20

[°C]

[°C]

15

7

18



fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

59

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s


Type TERRA SW Units20 Twin

Twin (HGL)26 Twin


Twin (HGL)42 Twin

Twin (HGL)/(P)

Heating capacity at W 10°C/W 35°C with safety heat exchanger

kW 24,55 31,05 41,66 49,08

Heating capacity at W 10°C/W 35°C kW 27,32 34,07 46,38 55,38




Power consumption at W 10°C/W 35°C with safety heat exchanger

kW 4,16 5,47 7,20 8,74

Power consumption at W 10°C/W 35°C kW 4,18 5,48 7,24 9,14




COP at W 10°C/W 35°C with safety heat exchanger

5,90 5,67 5,79 5,61

COP at W 10°C/W 35°C 6,53 6,40 6,41 6,06


Cooling capacity at W 15°C/W 7°C kW - 26,60 - 39,90

Cooling capacity at W 15°C/W 18°C kW - 35,20 - 56,80

Power consumption at W 15°C/W 7°C kW - 4,30 - 7,14

Power consumption atW 15°C/W 18°C kW - 4,72 - 7,44

Size (H/W/D) mm 1323/760/760

Weight Twin/Twin HGL kg 260/265 265/272 273/278 280/287

Heating water inlet and outlet R [A.G.] 6/4“ 6/4“ / 6/4“ 2“ 2“ / 2“

HGL connection R [A.G.] 1“ 1“ / 1“ 5/4" 5/4“ / 5/4“

max supply temperature °C 62 62 62 62

Nominal heating water fl owrate ΔT 5 K m³/h 4,7 6,1 8,1 9,7

Pressure drop heating side kPa 15 18 14 14

Remaining pressure of loading pump kPa 37,7 12 61,2 46,3

Sound power level db (A) 50,9 53 54,4 55,1

Sound pressure level in 5m db (A) 31,9 34 35,4 36,1

60

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


Type TERRA SW Units20 Twin

Twin (HGL)26 Twin


Twin (HGL)42 Twin

Twin (HGL) (P)

groundwater inlet/outlet R [A.G.] 6/4“ 6/4“ / 6/4“ 2“ 2“ / 2“

nominal gw volume circulated. GW m³/h 5,9 7,3 9,9 11,6

pressure loss groundwater side kPa 19 18 17 16


mm 50 x 2,9 63 x 3,6 63 x 3,6 63 x 3,6

refrigerant R410A R410A R410A R410A

Filling quantity refrigerant kg 6,50 7,10 8,20 9

Filling quantity compressor oil lt. 2,48 2,48 3,78 3,54

electrical connection V/Hz 400/50 400/50 400/50 400/50

Starting current(with soft starter) A 23,76 25,74 36,72 39,24

Fuse for controlling current A B13 B13 B13 B13

Min size installation room1 m³ 14,80 16,60 18,60 20,50



Note:



Note:


61

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.2.3. Groundwater heat pump TERRA SW 18H und 28 H

Heat pumps TERRA SW 18H and 28H operations where higher demand of domestic hot water is neede e.g. sports stadium, hotels, department complexes or for restorations, where higher flow temperatures are needed.


The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions, and a starting current limiter is integrated as standard.







TYP TERRA SW H

refrigerant R134a FCKW-free

heating output 25 and 39 kW


Voltage 400V/50Hz





62

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

TERRA SW 18H und 28H

cope of delivery refigerant circuit:suction gas cooled scroll compressorCopper soldered stainless steel plate heat ex-changer as condenserCopper soldered Stainless steel plate heat ex-changer as evaporatorElectronic expansion valveRefrigerant dryersensor for high and low pressure monitoring


T

T

T

M

T

M

TERRA

T

T

TERRA SW Hohne HGL-Technik

Hygienik

KW

RGAF

Wärmespeicher

VF

HK(A)

WW

Drossel-/Schrägsitzventil

0 5 10 15 20 25 30 35

10

20

30

40

50

60

70

[°C]

[°C]

R134a

Minimum groundwater inlet temperature 7°C

Applicat ion range heat ing

heat source inlet

fl ow

tem

pera

ture

63

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

TERRA-groundwater heat pumps with R134a, technical Data acc. to EN 14511


Heating capacity at W 10°C/W 35°C with safety heat exchanger

kW 22,19 33,05

Heating capacity at W 10°C/W 35°C kW 24,57 37,20








Power consumption at W 10°C/W 35°C with safety heat exchanger inkl. Pumpe

kW 4,42 6,93

Power consumption at W 10°C/W 35°C kW 4,61 7,11








COP at W 10°C/W 35°C with safety heat exchanger inkl. Pumpe

5,02 4,77

COP at W 10°C/W 35°C 5,33 5,23

Size (H/W/D) mm 1323/760/760

Weight kg 260 280

Heating water inlet and outlet R [A.G.] 5/4“ 6/4“

max supply temperature °C °C 65 65

Nominal heating water fl owrate ΔT 5 K m³/h 4,3 6,3

Pressure drop heating side kPa 14 19

Remaining pressure of loading pump kPa 39,42 17,13

Sound power/Sound pressure level in 5m dB (A) 58/39 60/41

64

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

TERRA-groundwater heat pumps with R134a, technical Data acc. to EN 14511

Type TERRA SW Units 18 H 28 H

groundwater inlet/outlet R [A.G.] 6/4“ 6/4“

nominal gw volume circulated. GW m³/h 5,1 7,5

pressure loss groundwater side kPa 20 25


mm 50x2,9 50x2,9

refrigerant R134a R134a

Filling quantity refrigerant kg 4,5 4,8

Filling quantity compressor oil lt. 4,0 4,14

electrical connection V/Hz 400/50 400/50

Starting current(with soft starter) A 16,34 24,04

Starting current(with soft starter) A 43 66

Fuse for controlling current A 13 13

Min size installation room1 m³ 18 19

1If the min size of the installation room is undercutted, it has the be carried out as an engine room referring to EN 378.

Note:



Note:


65

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.3. Air source heat pumps

General information

Air source heat pumps extract heat energy from surrounding air. Air from outside is sucked in by a fan passing over the evaporator inside the system. Its refrigerant heats up and simultaneously this flowing air is cooled by the extraction process. The increased energy potential is then passed to the hot water circuit.

To avoid freezing when heat is extracted from the air (and accumulated humidity), the evaporator is defrosted by a process-reversal system. This guarantees the heat pump‘s operation at outdoor temperatures as low as -20°C.

As the usable heat energy becomes less with fal-ling outdoor temperatures, the use of an air source heat pump combined with another heat source is recommended for reasons of efficiency. The most suggestive operation modes are monoenergetic and bivalent parallel.

Modulating heat pumps got the advantage that the performance of the pump is adjusted to the heating needs. A heating buffer isnt necessary anymore, because its directly injected in the hea-ting circuit..

Methods of installation air source heat pumps

In contrast with other heat sources, air heat-pumps can be installed both indoors and outdoors. If installed indoors, air source heat pumps require air ducts that have to be considered during the project planning phase of the building.

Air source heat pumps installed outdoors do not require air ducts. However, several measures have to be taken concerning the insulation of the plumbing in order to keep heat wastes as low as possible.

Decoupling from the building

To reduce vibration and noise in the building, the heat pump need to be decoupled from the buildung substance.Dont set the heat pump on light weigth boards/ground. on swimming concrete floor the concrete floor and the impact sound isolation should be leaved open.

The use of exhaust air from horse stables, cow sheds etc. is not recommended as the air may contain ammonia which could damage the evaporator.

Fig. Heat usage with an Air heat pump

12

34


66

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Air source heat pump for indoor installation

The heat pumps TERRA IL Complete (HGL) and TERRA CL Twin HGL are installed indoor. In this case, it is necessary to connect appropriate air ducts through which external air can be sucked in and the cooled-down air can be blown ou

Planning guidel ines

Installation site

The fl oor should be horizontal and even so that the heat pump can be level. The room should be frost and moisture-proof. In order to provide an easy access for maintenance purposes, the heat pump should have a minimum distance from the surrounding walls.

If a conventional heating system is loca-ted in the same room, a separate air duct should be installed for combustion air.

If the heat pump is to be installed in a living area, the installation of a sound-damping door should be considered. If the heat pump is located on an upper floor, a proper decoupling of oscillations

Air duct system

The size of the air ducts directly relate to the hea-ting energy required by the heat pump. In order that the heat pump can provide sufficient heating energy, there needs to be sufficient air flow.

The flow and return air has to be ducted to the outside to avoid an over-cooling of the room. Air flow resistance that might result from building up the air ducts should in any case be avoided. A maximum of two bends per duct should be adhe-red to in order to avoid pressure-drop.

Light shafts increase the pressure drop of the air ducting system. Therefore they should be sized appropriately by the owner of the building.

Air intake and outlet

In order to avoid airflow short-circuits, the air in-take and outlet should be located on two different sides of a building. This has to be ensured on-site. If this is not possible, the distance between air intake and outlet should be apart as far as possib-le. Ideally, intake and outlet should be separated on-site from each other. In any case it has to be ensured that the blown out air is separated from the fresh air taken in.

Instal lat ion opt ions

The TERRA IL Complete HGL and TERRA CL Twin HGL the air outlet is on the left or the right side possible. The hydraulic and electrical connections can be done on the left or right side.

Corner instal lat ion

The ideal position for the heat pump has proved to be in a corner. Wall openings can be prepared by the customer in advance. These openings must be insulated with closed pore insulating material (minimum thickness 50 mm).

67

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Sound

Sound power and sound pressure

Sound powerCalculated value, which results of the whole sound energy in all direction, independent from installation and distance.

Sound pressure:Meassured value, dependant on the local ins-tallation and defined distance e.g. in front of a window dependant on installation and distance.

Immission limit values for immission locaction outside of buildings

a) In industrial zones: whole day 70 dB(A)

b) In commercial zones: day 65 dB(A) night 50 dB(A)

c) In core zones, village area and mixed areas: day 60 dB(A) night 45 dB(A)

d) In general residential area and small residential estate area: day 55 dB(A) night 35 dB(A)

e) in residental area day 50 dB(A) night 35 dB(A)

f) in spa areas, hospitals, nursing home: day 45 dB(A) night 35 dB(A)

The sound immissions 0.5m meters away from the middle of the opended of the most in need of protection room have to be determined.

In need of protections rooms are (acc. to DIN 4109): • living and sleeping rooms• childrens rooms• office rooms• teaching rooms

Noise transmissions whithin buildings or impact sound transmissions for other rooms than the ins-tallation room:day 35 db(A)night 25 db(A)

Influence on sound transmissions

• Shadowing effects caused by massive barri-ers (buildings, walls)

• Reflections on hard surfaces( glas fronts, stone floors)

• Minimize with sound absorbing surface • Amplifying or lowering by wind/wind direc-

tions

For a technical sound-assessment of the place of installation, the expected sound pressure level at vulnerable areas must be estimated by calculati-on. These sound pressure levels can be calculated from the sound power level of the device, the setup situations (directional factor Q) and on the distance to the heat pump, using the following formula and description. The illustration shows a sound radiation in a quarter accoustic space.

68

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Hints:

• Heat pumps which are installed indoors, tend to be noticed more quiet

• As few as possible reflection surfaces• Keep distances to the neighbour or noise

sensitive spots as far as possible• Outdoor installed heat pumps should not ex-

haust to the neighbour or noise sensitive spots • Prevent directly exhaust to walls because the

sound reflections can raise the sound power

LAeq = Soundpressure level at listenerLWAeq = Soundpower level at sound sourceQ* = directional factorr = distance between listener and source

* The directional factor Q can be determined as shown in the following graphics.

1 2 4 5 6 8 10 12 15 20 30

2 8 14 20 22 23,5 26 28 29,5 31,5 34 37,54 5 11 17 19 20,5 23 25 26,5 28,5 31 34,58 2 8 14 16 17,5 20 22 23,5 25,5 28 31,5

directionalfactor Q

distance to sound source [m]

Soundpressure level according the soundpower level of sound source LWAeq [dB(A)]

Table for flashover calculation

Type 1: free standing installation

Type 2: Next to a facade (or indoor installation)

Type 3: Next to a facade (or indoor installation) and additional refl exion surface

69

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.3.1. TERRA IL Complete (HGL)

The TERRA IL Complete HGL is a compact air source heat pump for indoor installation. As stan-dard heating, domestic hot water production and cooling can be done.The TERRA IL Complete (HGL) heat pump is hyd-raulic completed. Thereby and through the special hydrailic piping, a lot of on site installation is not necessary e.g. heating circuit pumps or mixing circuits.

The easy installation possibilities reduce the cost to a minimum.

A multitude of applied SRS-actions(sound reduc-tion system) ensures low sound levels.

The ingenious control program of the integrated microprocessor NAVIGATOR® is designed to work in tandem with the efficient heat pump, the entire heat pump system is actuated as required and is equipped with a variety of monitoring, safety and signal functions.

1 Mixer/direct heating circuit can be operated us-

ing NAVIGATOR® as standard. With extension boards up to 6 heating circuits can be controlled.

Type TERRA IL Complete (HGL)





Additional the NAVIGATOR® allows many possible applications as the connection to www.myidm.at for remote maintainance and control via smartphones, a PC or the integration of a photovoltaic system.

The NAVIGATOR® provides with the NAVIGATOR® Pro 2.0 the possibility for an ener-gy saving single room control with the heat pump.

The integrated heat quantity calculation gives information about the energy consumption, there-fore no heat count meters are necessary.

With the HGL version in cooling mode the waste heat is not discharged and used for domestic hot water production. Heat and Cold is produced in one step, thereby the efficiency is highly increa-sed.



70

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

scope of refi gerant circuit:suction gas cooled scroll compressorlargely dimensioned finned tube evaporatorspecial speed-controlled radial fancopper soldered stainless steel plate heat exchangerHGL-plate heat exchanger (only at HGL version)electronic expansion valvesintegrated changeover valve for defrosting andcooling

scope of delivery in general:Navigator control with control panelA-Label pumpsafety immersion heater 6 kWsafety groupflow control sensorheating circuit overflow valveexpanstion tank50 l heating bufferpriority valve (or HGL-valve)condensation run off tube3 pcs. flexible connection hosesstarting current limiterOptimum heat and noise insulated casing


T

T

T

FIL

T

T

T

M

T

B32

B61

B51

B41B41B4

42B4BB

1BBBB

22M2MM2MMM

B34B34

B33B33

M73M73

B14BB14

Hygienikunregulated heating circle

OS

HW

CW

RE (A)

HC (A)

FS

TERRA IL Complete

expansion vessel availableas accessory

Throttlevalve

0 5 10 15 20 25 30 35 40 45 504

6

8

10

12

14

16

18

20

[°C]

[°C]

R410A

flow

tem

per

atu

re

outside temperature

-20 -15 -10 -5 0 5 10 15 20 25 30 35

20

25

30

35

40

45

50

55

60

10

[°C]

[°C]

R410A

40 45

65

outside temperature

flow

tem

pera

ture

71

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Technical Data acc to EN14511 IL 7 IL 9 IL 11

Heating capacity at A 2°C/W 35°C kW 6,65 9,47 10,92


Heating capacity at A -7°C/W 35°C kW 5,12 7,42 9,18


Heating capacity at A -7°C/W 55°C kW 4,93 6,87 8,69

Power consumption at A 2°C/W 35°C kW 1,64 2,24 2,72


Power consumption at A -7°C/W 35°C kW 1,63 2,18 2,87


Power consumption at A -7°C/W 55°C kW 2,53 3,07 4,19

COP at A +2°C/W35°C 4,05 4,23 4,02

COP at A +7°C/W35°C 4,79 4,79 4,57

COP at A -7°C/W35°C 3,14 3,40 3,20

Technical Data acc to EN14511

Cooling capacity at A35°C/W18°C kW 8,27 11,61 15,17

Cooling capacity at A35°C/W7°C kW 6,44 8,53 10,96

Power consumption at A35°C/W18°C kW 2,28 3,20 4,19

Power consumption at A35°C/W7°C kW 2,28 2,98 4,13

EER at A35°C/W18°C 3,63 3,63 3,62

EER at A35°C/W7°C 2,82 2,87 2,65

Sound power outdoor (silent mode) dB(A) 54 (52) 60 (58) 64 (62)

Sound power indoor dB(A) 42 47 49

Sound pressure level in 5m dB(A) 35 41 45

Sound pressure level in 10m dB(A) 29 35 39

Size HxWxD mm 1830x910x780

Weight kg 310 315 317


72

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

IL 7 Complete IL 9 Complete IL 11 Complete

Maximum fl ow temperature °C 62 62 62

Nominal fl ow rate heating water (A7/W35 5KΔT) l/h 1450 1900 2400

Installed loading pump Yonos 25/7 Para 25/1-7 Para 25/1-7

Free residual pressure of the loading pump (nominal fl ow rate) kPa 25 35 20

Max. operating pressure heating side bar 3 3 3

Flow connection/tank connection heating R 1“ A.G. 1“ A.G. 1“ A.G.

Installed condensation run-off R Hose connector 35 mm

Installed fan Radial fan

Residual pressure at maximum speed Pa 155 100 40

Nominal air quantity m³/h 2,500 3,500 4,200

Refrigerant used R 410A R 410A R 410A

Filling level of refrigerant agent kg 6.4 6.5 6.7

Filling level of compressor oil(Ester oil, Emkarate RL 32-3MAF l 1.2 1.2 1.2

Compressor levels 1 1 1

Minimum size of installation location m³ 14.6 14.8 15.3

Electrical Connections

Electrical connection compressor/heating element V/Hz 3x400/50

Electrical connection controller V/Hz 1x230/50

Initial current (compressor and fan) A 17.6 20.6 26.35

Operating current compressor A 5.19 6.19 9.02

Operating current fan (electric capacity) A (W) 2.1 (327) 2.1 (327) 2.1 (327)

Fuse main current A C 13 C 13 C 13

Fuse control current A B 13 B 13 B 13

Fuse heating element A B/C 13 B/C 13 B/C 13

73

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Performance diagrams - heating output with various flow temperatures

Heating output with flow temperatures of 35 °C

02468

101214161820

-20 -15 -10 -5 0 5 10 15 20 25

IL 7

IL 9IL 11

W35 EN14511

{ {{

outside temperature [°C]

heatin

g c

apaci

ty [

kW]

bivalence point of the particular heatpump type

standard external temperature

service water required

buildingcharacteristic line

required heating capacity atstandard external temperatureincl. service water required

BivalenceIL 7 Complete

BivalenceIL 9 Complete

Bivalence IL 11 Complete

Example:Detached single-family house in Germany4 person-household

Domestic water requirements: 4 x 0.25 kW = 1 kWHeating output requirements 8 kWStandard outside temperature Germany: - 16 °COff-period factor: 1.1

Heating energy required:

(domestic water requirements + heating output requirements) x off-period factor = 9.9 kW

0

2

4

6

8

10

12

14

16

18

-10 -5 0 5 10 15 20 25

IL 7

IL 9

IL 11

W55 EN14511

Outside temperature [°C]

Hea

ting

capa

city

[kW

]

74

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s



02468

101214161820

-20 -15 -10 -5 0 5 10 15 20 25

IL 7IL 9

IL 11

W35 EN14511W35 EN14511


Hea

ting

capa

city

[kW

]

02468

101214161820

-20 -15 -10 -5 0 5 10 15 20 25

IL 7IL 9IL 11

W45 EN14511W45 EN14511


Hea

ting

capa

city

[kW

]

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Corner instal lat ion

Optimum results are achieved if the heat pump is installed in a corner! The wall openings can be implemented by the building contractor. The wall openings must be insulated with closed porous insulating material (density 50 mm).

In order to guarantee maintenance and operation of the heat pump, a minimum distance of 800 mm has to be observed on the front side (for opera-tion and maintenance).

Decoupl ing of bui ldings

In order to minimize oscillations and sounds in the building, heat pumps should be decoupled from the structure in so far as possible. The installation of heat pumps on ceilings or floors in lightweight construction should be principally avoided. In the case of floating floor screed the floor screed and impact sound insulation should be omitted around the heat pump (as shown in the illustration).

Abstände für Innenaufstellung einer TERRA IL Comple

12

34

1. concrete floor2. impact sound insulation3. floor screed4. cut

76

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

640

980

8

15

100

810

100

785

9

80

640

785

980

100100

810

815

980

Outlet opening to the right Outlet opening to the left

To facilitate accessibility the outlet opening on the right-hand side should be given preference!

The dimensions specified are clear dimensions. Ensure that the wall opening is 50 mm larger around the wall insulation.

When using a light well this must be at least as wide as the wall outlet opening. The depth must be at least 400 mm.

77

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Instal lat ion of air ducts

Option 1:

This method is equivalent to corner installation. This method can be used if corner installation is not possible due to space restrictions or if a gap needs to be bridged between the heat pump and outlet side.

Option 2:

This method is used if there are not two external walls available. Because a short circuit may oc-cur between the supply and exhaust side, on site have to be set a structural separation between inlet and outlet. This prevents a short circuit.

78

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

810

B

750

785

9

90

980

8

15

A

810

815

980

750

785

990

46

On-si te preparat ions of air ducts - Option 1

On-si te preparat ions of air ducts - Option 2

A depends on the air duct:Length duct: A 1,000 mm 1,150 mm 1,500 mm 1,650 mm

B depends on the air duct:Length duct: AB 1,000 mm 1,166 mm 1,500 mm 1,666 mm

79

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Instal lat ion of f lexible air hose

This variant is especially suitable to bypass windows resp. to compensate on-site inaccuracies, differ-ences in height and radius. The air hose is supplied in 3 different lengths and can be cut to length as needed!

80

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

815

980

810

f

min.120

720

720

min 120

720

810

f

815

980

720

outlet openeing right

outlet openeing left

The dimensions specified are clear dimensions. The wall opening must be enlarged around the wall insulation! The minimum width of the wall insulation must be 50 mm.

When using a light well this must be at least as wide as the wall outlet opening. The depth must be at least 400 mm.

81

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.3.2. TERRA CL Twin HGL

The TERRA CL Twin HGL is a compact air source heat pump for indoor installation.

The control is done via the in wall cabinet im-plemeneted NAVIGATOR®. As standard heating and domestic hot water production can be done The TERRA CL is also available in a version with process reversal, for cooling operation .

The TERRA CL heat pump is ideal for heating and cooling of one and two-family houses equipped with underfloor heating or industrial buildings.

The Twin-technologie works with one refrigerant circuit and realises a performance related stage control of both compressors. In the transitional season the heat pump can work in the most effici-ent one stage mode.

The hot gas charging technology means that higher temperatures can be achieved for the res-ervoir via the integrated additional hot gas heat exchanger and the charging valve. as well as the special control sequence.

The ingenious control program of the integrated microprocessor control NAVIGATOR® is designed to function with the efficient heat pump operation, the entire heat pump system is

actuated as required and is equipped with a vari-ety of monitoring, safety and reporting functions.







Additional the NAVIGATOR® allows many possible applications as the connection to www.myidm.at for remote maintainance and controlvia smartphones, a PC or the integration of a photovoltaic system.

For the heat counting flow count meters are available as accessories.

The NAVIGATOR® enables the solar loading with an additional solar control board.


TYPE TERRA CL Twin HGL

Refrigerant R407C, FCKW-free

Heating output 20 and 30 kW



82

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

T

T

T T

T

STP

WW

KW

TERRA CL 20-30 Twin HGL

TERRA CL 20-30 Twin HGL

scope of delivery refigerant circuit:

2 pc. suctions gas cooled scroll compressorsa multi row Al/Cu rib pipe evaporatorspeed regulated radial fanstainless steel plate heat exchangerHGL-plate heat exchanger and HGL-valvethermostatic expansion valverefrigerant heat exchangerintegrated changeover valve for defrosting and cooling

scope of delivery in general:

Navigator control in wall cabinet for wall moun-teningsensor packageA-Label- loading pump (loose included)flow control sensorcondensation run off try2 pc. starting current limiters3 pc.. flexible connection hosesOptimum heat and noise insulated casing

20

25

30

35

40

45

50

55

60

10

[°C]

R407C

0 5 10 15 20 25 30 35 40 45 50

4

6

8

10

12

14

16

18

20

2

[°C]

[°C]

R407C

0


outdoor temperature

fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

outdoor temperature

83

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

TERRA CL heat pump with refrigerant R407C, technical data acc to EN14511

Technical data Unit 20 HGL TWIN 30 HGL TWIN

Heating capacity at A2/W35 [kW] 20,14 29,00

Heating capacity at A7/W35 [kW] 23,78 33,30

Heating capacity at A-7/W35 [kW] 17,15 24,00

Heating capacity at A 7/W55 [kW] 23,20 30,10

Heating capacity at A-7/W55 [kW] 16,20 20,50

Power consumption at A2/W35 [kW] 5,52 8,17

Power consumption at A7/W35 [kW] 6,07 8,48

Power consumption at A-7/W35 [kW] 5,61 7,97

Power consumption at A 7/W55 [kW] 9,09 11,15

Power consumption at A-7/W55 [kW] 8,53 10,79

COP at A2/W35 3,65 3,55

COP at A7/W35 3,92 3,93

COP at A-7/W35 3,06 3,01

Cooling capacity at A 35/W 7 [kW] 16,80 24,40

Cooling capacity at A 35/W 18 [kW] 23,00 33,60

Power consumption at A 35/W 7 [kW] 7,60 11,00

Power consumption at A 35/W 18 [kW] 8,80 13,40

EER at A 35/W 7 2,21 2,22

EER at A 35/W18 2,61 2,50

Sound power level [dB(A)] 72 79

Sound pressure level in 5m [dB(A)] 53 60

Sound pressure level in 10m [dB(A)] 47 54

84

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Technical Data

Refi gerant amount [kg] 8,5 10,5

Weight [kg] 413 488

heating inlet/outlet R 5/4" AG R 6/4“ AG

max. fl ow temperature [°C] 55 55

max. operating pressure [bar] 3 3

Nominal heating water fl owrate (A7W35 at ΔT 5 K) [m³/h] 3,55 5,25

pressure loss heating side [kPa] 15 17

Remaining pressure of loading pump [kPa] 40 70

recommended heating immerser [kW] 9 9

condensation run off R 1“ AG R 1“ AG

nominal air quantity [m³/h] 7000 9500

electrical connection [V] 400V/50Hz

Operating current compresseor (Compressor + fan) [A] 19,2 26,4

Starting current(with soft starter) [A] 31,2 43,8

Fuse main controll [A] 20 32

Fuse for controlling current [A] 13 13

min size installation room [m³/h] 36,5 41,9

85

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

condensation run off

Air source heat pumps generate condensation during operation. With larger machines, up to 50l of water can be extracted from the ambient air per day. The condensation run-off should be conveyed into the waste water channel via a siphon using the appropriate pipe diameter for the machine.

To guarantee maintenance and operation of the heat pump, the following minimum distances must be observed:

min

d. 8

00 m

m

mind. 500 mm

disctances corner installation TERRA CL

86

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

sMaß

Typ a b c d e f g

20 1100 930 780 930 90 750 750

30 1200 1130 880 1130 90 750 750

meassurement in [mm]

The dimensions given are inner width Insulation thickness has to be added (min 50 mm)

The installation area should be level. Once the heat pump has been positioned at the specified distances, it should be levelled using its adjus-table feet.

Accessories

Pos. 341

Pos. 342 (343)

Pos. 345 (346)

Pos. 344

Fig.: overview accessories

The exhaust should preferably be located to the right hand side.

Onsite preparations TERRA CL 20 Twin HGL and 30 Twin HGL

a

bd

c

ee

fg

Fig.: Distances for corner installation, left side air outlet

a

b d

c

ee

f g

Fig.: Distances for corner installation, right side air outlet

87

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.3.3 TERRA ML 6-8 Complete in spl i t design

The equipment supplied with the TERRA ML Complete includes the outdoor and indoor unit.

As standard heating, domestic hot water produc-tion and cooling can be done.

The outdoor unit includes, except for the conden-ser, which is in the indoor unit located, all appre-ciable refrigerant circuit components. The indoor unit includes a Hygienik 300 ltr. with 25 l/min hot water station, an A-Label charging pump, and the NAVIGATOR® control.Through thte small space amount of the indoor unit it can be installed in a small installation room.

With latest Inverter Technology steplessly power adjustment is possible. The speed controlled com-pressor produces only the heat you need.In the transitional season the heat pump can work in the most efficient part load function.

The IDM patented ClC (Controlled Inverter Cooling)enhhances the lifetime of the inverter and reduces heating loss to a minimum.

external unit (inkl.

compressor)

TYPE TERRA ML 6-8 Complete


Heating output 6 to 8 kW modulating


Voltage 400V/50Hz

The outdoor unit can be established in great dis-tance, up to 30m in one direction, from the indoor unit.They are connected via refigerant connection pipes and are thereby frost proof.

The indoor unit sets the hydraulic connection for a direct heaating circuit. Additional components as a heating or cooling buffer or heating circuit mixer and pump are not necessary. The easy installation possibilities reduce the cost to a minimum.



Additional the NAVIGATOR® allows many possible applications as the connection to www.myidm.at for remote maintainance and control.via smartphones, a PC or the integration of a photovoltaic system.The NAVIGATOR® provides with the NAVIGATOR® Pro 2.0 the possibility for an ener-gy saving single room control with the heat pump.

For the heat counting flow count meters are available as accessories..

The NAVIGATOR® enables the solar loading with an additional solar control board in the 300L Hygienik. The heat transfer has to done via an external solar station.

indoor unit

(incl. Hygienik 300/25

and Navigator)

88

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

scope of delivery outdoor unit:modulating compressorInverter with patented CIC-Technologylargely dimensioned multi-row Al/Cu finned tube evaporator2 pc. electronic expansion valvesspecial speed-controlled axial fan with Flowgridintegrated changeover valve for defrosting and coolingcondensation run off with frost protection

scope of delivery indoor unit:Navigator control with control panel 300 l Hygienikbuffer for domestic hot water25 l/min hot water stationA-Label charging pumpcopper soldered plate heat exchangercopper soldered HGL-exchangersafety immersion heater 6 kWflow control sensorOptimum heat and noise insulated casing

T

P

T

T

M

T

T

rH%T

FIL

A

B

T

Indoor unit

OS

HW

CW

RE (A)

Outdoor unit Refrigerant pipes

A

B

FS

-20 -15 -10 -5 0 5 10 15 20 25 30 35

20

25

30

35

40

45

50

55

60

10

[°C]

[°C]

R410A

0 5 10 15 20 25 30 35 40 45 50

4

6

8

10

12

14

16

18

20

2

[°C]

[°C]

R410A

0

Heating Cool ing

outdoor temperatureoutdoor temperature

fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

89

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Technical data acc. to EN14511 [at nominal speed] TERRA ML 6-8 Complete

Heating capacity at A 2°C/W 35°C kW 5,50


Heating capacity at A -7°C/W 35°C kW 4,27


Heating capacity at A -7°C/W 35°C kW 3,55

Power consumption at A 2°C/W 35°C kW 1,59


Power consumption at A -7°C/W 35°C kW 1,74


Power consumption at A -7°C/W 55°C kW 2,67

COP at A +2°C/W35°C 3,47

COP at A +7°C/W35°C 4,40

COP at A -7°C/W35°C 2,46

Cooling capacity at A35°C/W18°C kW 7,10

Cooling capacity at A35°C/W7°C kW 5,50

Power consumption at A35°C/W18°C kW 1,77

Power consumption at A35°C/W7°C kW 1,82

EER at A35°C/W18°C 4,01

EER at A35°C/W7°C 3,02

Sound power level dB(A) 53

Schalldruckel in 5 m dB(A) 34

Schalldruckel in 10 m dB(A) 28

90

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Technical data TERRA ML 6-8 Complete

Max supply temperature °C 55

Nominal heating water fl owrate ΔT 5 K m³/h 1,30

Pressure drop heating side kPa 10

Remaining pressure of loading pump kPa 38

inlet/outlet heating side R 1" A.G.

hot/cold water R 3/4“ A.G.

inlet/outlet for bivalence for HW R 3/4“ A.G.

air amount outdoor unit m³/h 3.300

Weight outdoor unit kg 67

Weight InnenUnit kg 185

Refrigerant R 410A

Filling quantity refrigerant kg 3,5

Refrigerant line on the gas side mm 15,88 x 1,0

Refrigerant line liquid side mm 9,53 x 0,8

max. operating pressure heating side bar 3

Max. operating pressure service water side bar 6

min. size installation room m³ 8

Electrical connection outdoor unit V/Hz 230/50

Electrical connection immersion heater V/Hz 400/50

max. operating current compresseor A 19

Fuse external device (Type C) A 20

Fuse for controlling current (Type B) A 13

Fuse heating immerser (1-phase) (Type B/C) A 32

Fuse heating immerser (3-phase) (Type B/C) A 13

91

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

modulating heating output at flow temperatur of 35°C


Capacity diagram Terra SL 12

heat

ing

capa

city

[k

FT 35°CFT 45°CFT 55°C

0

1

2

3

4

5

6

7

8

-20 -15 -10 -5 0 5 10

VL 35°C

VL 45°C

VL 55°C


heat

ing

capa

city

[kW

]

heating output at nominal speed with various flow temperatures

6

8

10

12

14

c ap

acity

[kW

]

Heating output

MAX

NOMINAL

MIN

0

2

4

15 10 5 0 5 10 15 20 25

heat

ing

outdoor temperature [°C]

92

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Instal lat ion exter ior device

In installing the exterior device the following points must be observed:

– The maximum pipeline length between the exte-rior device and the inner unit must not exceed 30 m (in one direction). – The maximum difference in height between the

exterior device and the inner unit must not exceed 15 m (irrespective of whether the exterior device or the inner unit are at a higher position) – The installation location must be selected to en-

sure that no noise pollution occurs (do not install in the vicinity of bedrooms, observe distances to neighbors), hedges and bushes can have a noise-insulating effect. – It is necessary to ensure that a frost-proof con-

nection of the condensed water outlet is observed. – An unobstructed flow of inlet air and outlet air

must be possible (installation therefore at least 20 mm above the expected quantity of snow) – The inlet air must be free of impurities, e.g.

sand and aggressive substances, such as ammo-nia, sulfur, chlorine etc. – The exterior device must be installed on a load-

bearing stable construction.

In the case of an installation at locations which are susceptible to wind (e.g on the roof), the equipment has to be aligned in such a way so that the expected wind direction is normally in the inlet air direction of the exterior device.

The exterior device has to be installed on a firm ground in horizontal position. This can be achieved by an extra insulated concrete base or by wall consoles which are available as acces-sories. The load-bearing capacity must be suffi-ciently configured. The equipment must be fixed on four corners with four times M10 (3/8 inch) foundation screws with a length of 70 mm

Air source heat pumps generate condensed water when in operation, that can be up to 4 l within 2 minutes per defrosting cycle. Der Kondensatablauf ist frostsicher aus zu führen. Dies kann mit der als Zubehör erhältlichen Kondensatablaufwanne realisiert werden. The condensation run-off must be frost-proof. This can be realized using the condensate run-off collection pan which is available as accessory. The pan is heated and furthermore offers the pos-sibility of heating the front area of the condensa-tion run-off.

wind direction

wind direction

suction

exhaust

93

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Assembly of the condensation run-off collection pan

The condensation run-off collection pan is available as accessory. It contains an E-heating band as frost protection, a spiral tube for the condensation run-off and all small parts required for installation.

Besides that a 3 x 1.5 mm² supply cable for the E-heating band is required. This is also available as accessory.

First of all the condensation pipe has to be attached to the discharge nozzles on the bottom side of the condensate collection pan using the clamp provided. The E-heating band has to be in the condensation pipe.

Then pan can be mounted as shown on the following diagrams.

hex nut M10 DIN934 A2washer DIN125/A M10 A2

feet ML 6 - outdoor devicecondensate run-off tub

hanger bolt M10x120 concrete base

washer DIN125/A M10 A2

washer DIN125/A M10 A2

hex nut M10 DIN934 A2

For the electrical connection of the heating band the supply line which is available as accessory has to be laid to the exterior device. This has to be connected to the end of the heating cable using the clamp. The clamp can then be fixed to the exterior unit using the screws supplied.

~30 mm

hanger bolt engulf ca.40mm in concrete base

Outdoor device

Condensate flowtrough heated

75mm

Well/Pipe 300mm

Canalisation

Condensateflow

Concrete base

Pipe

min. 20 cm

80 c

m

Instal lat ion with wal l console

The wall console is available as accessory and can be used for the ML 6-8 Complete. It includes 4 aluminum profiles, 4 rubber buffers and small parts for installation. The installation materials for a wall mount are to be provided by the customer.

94

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Minimum distances to the exteriro device (in mm)

200

200

500

100

100

500200

500

Wall opening

The wall opening should be performed with a down-grade from the inside to the outside. In order to avoid damage, the wall opening should be cushioned on the inside or lined with a PVC pipe (see fig. to the right)

After completing the installation the wall opening must be sealed on site using a suitable sealing mass taking pertinent fire regulations into ac-count!

Instal lat ion refr igerant connect ion l ines

If the refrigerant connection piping is laid in the ground, it have to be done in a protective tube. This may be of a diameter of 150 mm for ex-ample, a PVC tube.

The refrigerant pipes in the house must not be laid under plaster.

electrical connection pipes

refrigerant connection pipes

95

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.3.3. TERRA ML 6-8, 8-13 and 11-18 Complete in spl i t design

The equipment supplied with the TERRA ML Complete includes the outdoor and indoor unit.


The outdoor unit includes, except for the con-denser, which is in the indoor unit located, all appreciable refrigerant circuit components. The indoor unit includes a Hygienik 300 ltr. with 25 l/min hot water station, an A-Label charging pump, and the NAVIGATOR® control.Through thte small space amount of the indoor unit it can be installed in a small installation room.



The outdoor unit can be established in great dis-tance, up to 30m in one direction, from the indoor unit.They are connected via refigerant connection pipes and are thereby frost proof.

The indoor unit sets the hydraulic connection for a direct heaating circuit. Additional components as a heating or cooling buffer or heating circuit mixer and pump are not necessary. The easy installation possibilities reduce the cost to a minimum.





The NAVIGATOR® enables the solar loading with an additional solar control board in the 300L Hygienik. The heat transfer has to done via an external solar station.

external unit

(incl. compressor)

internal unit

(incl. Hygienik 300/25

and Navigator)

TYPE TERRA ML Complete


Heating output 8 to 13 and 11-18 kW modulating



96

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


scope of delivery indoor unit:Navigator control with control panel 300 l Hygienikbuffer for domestic hot water25 l/min hot water stationA-Label charging pumpcopper soldered plate heat exchangercopper soldered HGL-exchangersafety immersion heater 6 kWflow control sensorOptimum heat and noise insulated casing

-20 -15 -10 -5 0 5 10 15 20 25 30 35

20

25

30

35

40

45

50

55

60

10

[°C]

[°C]

R410A

0 5 10 15 20 25 30 35 40 45 50

4

6

8

10

12

14

16

18

20

2

[°C]

[°C]

R410A

0

Heating Cool ing


fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

97

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.3.2. TERRA ML 8-13 and 11-18Complete HGL in spl i t design

The equipment supplied with the TERRA ML Complete HGL includes the outdoor and indoor unit..


The outdoor unit includes, except for the conden-ser, all appreciable refrigerant circuit components Inneneinheit liegt. Additional the indoor unit includes the controlled HGL techology and the NAVIGATOR®.



The outdoor unit can be established in great dis-tance, up to 30m in one direction, from the indoor unit. They are connected with the as accessory available refrigerant connection pipes. Thereby is no danger of frost for the outdoor unit or the connection pipes



1 Mixer/direct heating circuit can be operated us-

ing NAVIGATOR® as standard. With extension boards up to 6 heating circuits can be controlled.

Additional the NAVIGATOR® allows many possible applications as the connection to www.myidm.at for remote maintainance and control.via smartphones, a PC or the integration of a photovoltaic system.The NAVIGATOR® provides with the NAVIGATOR® Pro 2.0 the possibility for an ener-gy saving single room control with the heat pump.The outdoor unit of the TERRA ML Complete is factory-filled with refrigerant and tested for cor-rect functioning and sealing. At the commissio-ning the outdoor and indoor unit are refrigerating connected.



outdoor unit

(incl. compressor)

indoor unit

(incl. condensor, HGL-technology

and Navigator)

TYPE TERRA ML Complete HGL


Heating output 8 to 13 and 11-18 kW modulating



98

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


scope of delivery indoor unit:Navigator control with control panelA-Label charging pumpcopper soldered plate heat exchangercopper soldered HGL-exchangerHGL-valve for hot water productionsafety immersion heater 6 kWflow control sensorOptimum heat and noise insulated casing

-20 -15 -10 -5 0 5 10 15 20 25 30 35

20

25

30

35

40

45

50

55

60

10

[°C]

[°C]

R410A

0 5 10 15 20 25 30 35 40 45 50

4

6

8

10

12

14

16

18

20

2

[°C]

[°C]

R410A

0

Heating Cool ing


fl ow

tem

pera

ture

fl ow

tem

pera

ture

coo

ling

99

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Technical data acc. to EN14511 [at nominal speed] ML 8-13 ML 11-18

Heating capacity at A 2°C/W 35°C kW 8,24 11,48

Heating capacity at A 2°C/W 35°C (at MaxDrehzahl) kW 13,89 17,62


Heating capacity at A -7°C/W 35°C kW 6,30 9,90


Heating capacity at A -7°C/W 55°C kW 5,44 9,20

Power consumption at A 2°C/W 35°C kW 2,04 3,15

Power consumption at A 2°C/W 35°C (at MaxDrehzahl) kW 4,21 5,59


Power consumption at A -7°C/W 35°C kW 2,01 3,28


Power consumption at A -7°C/W 55°C kW 2,80 4,87

COP at A +2°C/W35°C 4,04 3,64

COP at A +7°C/W35°C 4,70 4,46

COP at A -7°C/W35°C 3,14 3,02

COP at A +2°C/W45°C 3,20 2,84

Leistungsdaten nach EN14511 [at Nenndrehzahl] ML 8-13 ML 11-18

Cooling capacity at A35°C/W18°C kW 9,88 12,15

Cooling capacity at A35°C/W7°C kW 7,57 9,54

Power consumption at A35°C/W18°C kW 2,29 3,02

Power consumption at A35°C/W7°C kW 2,26 3,17

EER at A35°C/W18°C 4,32 4,02

EER at A35°C/W7°C 3,35 3,01

Sound powerat A7/W55 dB(A) 60 64

Sound pressure level in 5m dB(A) 41 45

Sound pressure level in 10m dB(A) 35 39


100

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Technical Data ML 8-13 ML 11-18

Maximum fl ow temperature °C 60 60

Nominal fl ow, heating water (A7/W35 5KΔT) m³/h 1.84 2.50

Nominal fl ow, heating water (A7/W55 8KΔT) m³/h 1.00 1.40

Implemented loading pump Wilo Stratos Para 25/1-7 Wilo Stratos Para 25/1-8

Pressure loss, heating side kPa 49 54

Free residual pressure of the charging pump kPa 14 17

HGL-,Heating-fl ow and return connection R 1“ AG 1" AG

Condensate run-off R 1“ AG 1“ AG

Maximum heating side operation Pressure bar 3 3

Air volume at outdoor device m³/h 4,000 5,500

Outdoor device weight kg 218 224

Indoor unit weight kg 75 76

Coolant used R 410A R 410A

Coolant fi ll quantity * kg 6.1 6.2

Minimum size of installation location m³ 13.9 14.0

Filling level of compressor oil(Ester oil, Emkarate RL 32-3MAF) lt. 1.9 1.9

Cold piping, gas side mm 15.88 x 1.0 18.00 x 1.0

Cold piping, liquid side mm 12.00 x 1.0 12.00 x 1.0

Max. distance outdoor device - indoor unit m 30 30

Electrical connection compressor V/Hz 3~ 400/50 3~ 400/50

Electrical connection heating element V/Hz 3~ 400/50 3~ 400/50

Electrical connection control V/Hz 1~230/50 1~230/50

Maximum operating/starting current compressor A 15.8 17.8

Maximum operating current, heating element A 8.7 8.7

Control current fuse A B 13A B13A

Heating element fuse A B 13A B 13A

Supply outdoor device fuse A C 20A C 20A

Maximum operating current fan A 2.2 2.2

Maximum power uptake fan kW 0.36 0.36

Dimensions outdoor unit (H x W x D) mm 1005/1433/616

Dimensions indoor unit (H x W x D) mm 1237/610/353

101

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Power diagrams ML 8-13 Complete (HGL) in compliance with EN14511

Modulat ing heat ing range at f low temperatures of 35 °C

10

12

2

4

6

8

20 15 10 5 0 5 10 15 20

W35

W45

W55


heat

out

put [

kW]

10

12

14

16

18

0

2

4

6

8

20 15 10 5 0 5 10 15 20

NENN

MAX

MIN

heat

out

put [

kW]


Heating capaci t ies at nominal speed and various f low temperatures

102

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Power diagrams ML 11-18 Complete (HGL) in compliance with EN14511

Heating capaci t ies at nominal speed and various f low temperatures

Modulat ing heat ing range at f low temperatures of 35 °C

14

16

18

20

6

8

10

12

20 15 10 5 0 5 10 15 20

W35

W45

W55

heat

out

put [

kW]


14

16

18

20

22

24

NENN

MAX

0

2

4

6

8

10

12

20 15 10 5 0 5 10 15 20

MIN

heat

out

put [

kW]


103

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Example for bottom section

wind directio

wind direction

exha

ust

sucti

on

55 75 700

710

150 150

Concrete base

condensaterun off

Refrigerantconnections

Outdoor device instal lat ion

The outdoor device contains all the relevant cold circuit components apart from the condenser, such as the speed controlled sroll compressor, the finned evaporator with quiet running axial ventilator, the filter drier, the liquid collector and the electronic expansion valve.

The refrigeration lines between the outdoor de-vice and indoor unit must be fitted on site. Refrig-eration pipes are available as accessories. The heating gas and liquid pipes must be insulated separately.

Onsite preparat ions

Take the following points into account when in-stalling the outdoor device:

– The maximum pipe length between outdoor device and indoor unit may not be more than 30 meter (in the one direction). – The maximum height difference between out-

door device and indoor unit may not exceed 15 meter (irrespective of whether the outdoor device or indoor unit is higher) – The installation site must be selected such that

no noise interference can occur (do not install close to bedrooms, keep distance from neigh-bours), hedges and bushes can absorb noise. – A frost-proof connection of the condensation

run-off is required. – Unhindered air flow must be possible (install

at least 20 cm above the expected snow depth) – The minimum distances stated on

the following pages must be observed

The connecting pipes must be insulated in order to minimise losses through the earth.

– The inlet air must be free of impurities such as sand and caustic materials such as ammonia, sulphur, chlorine, etc. – The outdoor device must be installed on a rigid,

solid construction.When installing at windy locations (e.g. on a roof), the alignment of the machine must be selected such that the prevailing wind direction is normally facing the air inlet direction of the outdoor device.

Concrete Base

Type1

View from above

104

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

415

710

1290

150

200

Concrete base

condensaterun off

Refrigeraconnecti

585

68

829

400 2

24

41 Condensate run-offR1“ rear

Connectionsrefrigerant piping

electricalconnections 565

710

1440

150

200

200

200

100

Concrete base

condensaterun off

Refrigerantconnections

Instal lat ion locat ion

If the installation location is not protected from snowfall, it must be selected or designed such that the lower edge of the outdoor device is 20 cm above the expected snow level in any case..

The cold side connection isn’t placed exact in the middle of the outdoor device, but like in the picture above a bit offset!

On the air outlet exists an increased risk of frost. Rain pipes, water-carrying pipes or water-carrying containers must not be located next to the outlet side.

The condensation run-off must be frost-proof. The outdoor unit already includes a heated conden-sate run-off tray. This avoids frost. The condensate run-off also has to be heated, with the already mounted heating cable.

In coastal installation, a minimum distance of 5 km from the coast must be observed. If this safety distance is not observed, there could occur increased corrosion. These cases are excluded from the guarantee.

Type 2

Type 3

The outdoor device must always be installed on a solid surface in a horizontal position. This can be achieved with an extra concrete base. The base has to allow a condensate run-off and the con-nection for the refrigerant piping. For this reason there should be two gaps in the base.

The base must be sufficiently strong.

View from above

View from above

View from above

105

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Outdoor device

Well/Pipe 300mm

Canalisation

Condensate flowcompaning heating system

Concrete base

min. 200

800 m

m

Instal lat ion outdoor device on concrete base

By the outdoor device a mounting set is enclosed, wich you can find under the cover near the self-contained system. It exists of 4 rubber puffer and the included screw connections. The rubber puffers are placed under the base of the outdoor device, see picture belowe. The outdoor device must be fixed on concrete base like in the pictures.

Connect ion condensat ion run-of f

The enclosed corrugated hose (1,5 m) is found under cover of the self-contained system and must fixated with the enclosed pipe clamp on the con-densation run-off adapter. The heating tape which is already wired is placed in the condensation-tub and must only inserted through the discharge hose. The condensation bin and the run-off have to be checked for soiling regularly

Special measures must be taken for the condensation that occurs. It must be guaranteed in any case that it is properly carried away or drained. It must not be possible for ice to form

again..

Condensat ion run-of f

106

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

The minimum distances must be main-tained due to perform maintenance.

min. 400 mm

min. 600 mm

air outlet

air inlet

barrier

barr

ier

When installing the outdoor device, there must be special attention to avoid air flow short circuit. Note by assembly, that no air-bypass will deve-lop between duct inlet and duct oulet. So it‘s not allowed that the outdoor device is enclosed by 4 walls, so the duct inlet or the duct outlet must be independent.

Minimum distances Transpor t outdoor device

On the base of the outdoor device, two holes for transport are placed. So for example a 1“ metal tube can inserted trough this holes for transport.

To keep the connaction side free of particular average, take care that the outdoor device will beat off and lift only in horizontal position.

Don‘t use the connection side for carry handles!

View from above

107

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Connect ions internal uni tML 8-18 Complete

All hydraulic, refrigerant and electrical pipings are on the topausgeführt.

6,4

24 18

13,256,9

3,89,5 36,8

6,512

3,3

1

2

8

5

4

3

76

1 Liquid line refrigerant 9.53 mm2 Hot gas line refrigerant 15.88 mm3 Heating tank connection 1“ A.G.4 Heating flow connection 1“ A.G.5 Cold water connection 3/4“ A.G.6 Hot water connection 3/4“ A.G.7 Conduct 50mm for low-voltage cables (sen-sor and data line)8 Conduct 50mm for electric connecting cable with mains voltage

All connection of the internal unit are on top

1

4

2

3

5

6

7

Connect ions internal uni t ML Complete 8-18 HGL

1. Opening 50mm for low voltage cable (sensor and data cable)2. Opening 50mm for electric connection cable with mains voltage3. Opening for heating-flow 1“ O.T.4. Opening for HGL-flow 1“ O.T.5. Opening for heating-return 1“ O.T.6. Refrigerant liquid pipe (left hand side) Refrigerant hot gas pipe (left hand side)7. Main switch (left hand side)

Connections 1 and 5 are pre cut and have to be removed if needed and with added rubber grommets have to be attached

The refrigerant lines are only pos-sible to place on the left hand side. Hydraulic and electric connections could be placed on both sides!

108

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

sT

P

T

T

M

T

T

FIL

T

Indoor unit(incl. HGL-mixer, electrical heating immerser und loading pump)

OS

Outdoor unit(incl. compressor)

Refrigerant pipes

HW

CW

RE (A)

FS

T T

T

T

M T

T

T

T

M

HygienikIndoor unit(incl. HGL-mixer, electrical heating immerser und loading pump)

OS

HW

CW

separation plate

RE (A)

HC (A)

FS

Outdoor unit(incl. compressor)

Refrigerant pipes

Throttlevalve

TERRA ML 8-18 Complete heat pump with 300l internal uni t

For service water heating the priority valve is switched into the hygienic storage tank. The hy-gienic storage tank is loaded in priority load with speed-controlled high-efficiency loading pump at the set loading temperature.

In heating operation the priority valve is set to heating. By the inverter technology a provision of heating energy which is tuned to requirements is enabled.

The heating circuit is configured as direct circuit. In this case the loading pump takes over the func-tion of the heating pump and an additional heat-ing circuit is no longer required.

In cooling operation a room humidity sensor or a dew point sensor must be installed.

TERRA ML 8-18 Complete HGLheat pump with hygienik with separat ion plate

The Hygienik is used for service water storage and for buffering heating water. During the priority charging procedure, the top area of the storage tank is charged with the speed-controlled charging pump at the set HGL temperature.

During the heating operation of the heat pump, a proportion of the flow is always charged into the top storage tank area via the HGL exchanger and the HGL valve at the set HGL temperature.

This keeps the Hygienik at the right temperature whilst at the same time the lower storage tank area is better used as a buffer due to the higher temperature, this means:

– longer running times for the heat pump – longer deadtimes – more tapwater and higher tapwater tempera-

ture

109

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

5.4.5 TERRA AL Twin

TYPE TERRA AL Twin


Heating output 17, 24 and 32 kW


Voltage400 V/ 50 Hz

The TERRA AL Twin is a compact air source heat pump for outdoor installation.

The control is done via the in wall cabinet im-plemeneted NAVIGATOR®. As standard heating and domestic hot water productio can be done The TERRA AL Twin is also available in a version with process reversal, for cooling operation.

The TERRA AL Twin heat pump is ideal for heat-ing and cooling of one and two-family houses equipped with underfloor heating or industrial buildings.

The Twin-technologie works with one refrigerant circuit and realises a performance related stage control of both compressors. In the transitional season the heat pump can work in the most effici-ent one stage mode.


The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions.










110

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

scope of delivery refigerant circuit:2 pc. suctions gas cooled scroll compressors2 pc. electronic expansion valveslargely dimensioned multi-row Al/Cu finned tube evaporatorspecial speed-controlled axial fancopper soldered stainless steel plate heat exchangerintegrated changeover valve for defrosting and cooling

-20 -15 -10 -5 0 5 10 15 20 25 30 35

20

25

30

35

40

45

50

55

60

10

[°C]

[°C]

R410A

40 45

65

outside temperature

flow

tem

pera

ture

0 5 10 15 20 25 30 35 40 45 50

4

6

8

10

12

14

16

18

20

2

[°C]

[°C]

R410A

0

outside temperature

flowt

empe

ratu

re

Cool ingHeating

scope of delivery in general:Navigator control in control cabinet sensor package2 pc. flexible connection hoses2 starting current limiters2 pc.compressor heating unitsflow control sensorcondensation run off try with frost protectionOptimum heat and noise insulated casingOptimal wärme- und schallisoliertes Gehäuse

T

T

P

T

M

T T

M

T T

T

FIL

B

A

HW

CW

HygienikTERRA AL Twin

RE

OS

FS

HC(A)

electrical cabinetThrottle

valve

111

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Technical Data Unit 17 Twin 24 Twin 32 Twin

Heating capacity at A 2/W 35 [kW] 17,24 23,68 31,56


Heating capacity at A -7/W 35 [kW] 14,58 20,13 26,88


Heating capacity at A -7/W 55 [kW] 13,30 18,75 24,24

Heating capacity at A 2/W 35( 1 Verdichter) [kW] 10,26 13,09 18,55

Heating capacity at A 7/W 35( 1 Verdichter) [kW] 12,18 15,14 20,52

Power consumption at A 2/W 35 [kW] 4,23 5,85 7,87


Power consumption at A -7/W 35 [kW] 4,31 5,94 8,02


Power consumption at A -7/W 55 [kW] 5,93 8,33 11,12

Power consumption at A 2/W 35(1 Verd.) [kW] 2,21 2,84 4,07

Power consumption at A 7/W 35(1 Verd.) [kW] 2,23 2,80 3,88

COP at A2/W35 4,08 4,05 4,01

COP at A7/W35 4,89 4,88 4,82

COP at A-7/W35 3,39 3,39 3,39

Cooling capacity at A 35/W 7 [kW] 17,61 24,32 30,94

Cooling capacity at A 35/W 18 [kW] 26,31 35,86 45,00



EER at A 35/W 7 2,93 3,03 2,88

EER at A 35/W 18 3,87 3,89 3,81Sound power dB(A) 66,9 69,5 75,8

Sound pressure level in 5 m dB(A) 47,9 50,5 56,8

Sound pressure level in 10 m dB(A) 41,9 44,5 50,8

Sound power 1-stage dB(A) 59,6 61,2 69,1

Sound pressure level in 5 m 1-stage dB(A) 40,6 42,2 50,1

Sound pressure level in 10 m 1-stage dB(A) 34,6 36,2 44,1

112

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Technical DataAL 17 Twin AL 24 Twin AL 32 Twin

Max supply temperature °C 62 62 62

Nominal fl ow rate heating water (A7/W35 5KΔT) m³/h 3,75 5,05 6,60

Nominal fl ow rate heating water (A7/W55 8KΔT) m³/h 2,15 2,80 3,85

Pressure loss condenser at nominal fl ow kPa 14,2 10,7 11,9

max. operating pressure heating side bar 3 3 3

fl ow and return connection R 5/4“ AG 6/4“ AG 6/4“ AG

Installed condensation outlet R 1“ AG

Installed fan Eulenfl ügel-Axialventilator

Nominal air quantity m³/h 7000 9000 11000

Power input fan W 250 270 520

Refrigerant R410A

Filling level of refrigerant agent kg 12,8 15,7 16,0

Filling level of refrigerant agent (process reversal) kg 12,8 14,6 14,8

Filling level of compressor oil (overall) lt 2,48 2,48 3,78

Compressor stages 2 2 2

Electrical data

electrical connections compressor/heating element/fan

V/Hz 400/50

electrical connection controller V/Hz 230/50

Initial current (compressor and fan) A 26,49 34,16 45,95

operating current compressor A 2x6,54 2x8,46 2x12,00

operating current fan A 1,45 1,45 1,45

Fuse main controll A C 20 C 25 C 32

Fuse controlling current A B 13 B 13 B 13

fuse heating element (up to 9 kW) A B 13 B 13 B 13

Size H/W/D mm 1199/1950/925 1399/1950/925 1399/1950/925

Weight [kg] 430 575 590

113

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

0

5

10

15

20

25

30

35

40

45

50

-20 -15 -10 -5 0 5 10 15 20

AL 17

AL 24

AL 32

W35 EN14511

{ {{


heatin

g c

apaci

ty [

kW]

bivalence point of the particular heatpump type

standard external temperature

domestic hot water requirement

buildingcharacteristic line

required heating capacity atstandard external temperatureincl. service water required

BivalenceAL 17 Twin

BivalenceAL 24 Twin

Bivalence AL 32 Twin

An air/water-heat pump should be dimensioned in such a way that the bivalence point lies between -3 and -10 °C. This guarantees that more than 90° of the annual heating requirement (Austria, Germany, Switzerland) will be covered by the heat pump.

In dimensioning the system the maximum heating output of the house including the water for domestic use is calculated.

The standard outside temperature is additionally required. This is determined by the geographical location and can be found on the IDM homepage and obtained from various institutions.

Example:Detached single-family house in Germany4 person-household

Domestic water requirements: 4 x 0.25 kW = 1 kWHeating load requirements 19.5 kWStandard external temperature Germany: - 16 °COff-period factor: 1.1

Heating energy required:

(domestic water requirements + heating load requirements) x off-period factor = 22.5 kW

114

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

0

50

10

15

20

25

30

35

40

45

50

-20 -15 -10 -5 0 5 10 15

AL 17

AL 24

AL 32

W35 EN14511


Heat

ing

capa

city [

kW]

0

5

10

15

20

25

30

35

40

45

-20 -10 0 10 20

AL 17

AL 24

AL 32

W45 EN14511


Heat

ing

capa

city

[kW

]



115

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Transpor t

If the heat pump has to be moved on site, there is the possibility to use a hand lift truck. The truck have to be applied on the compressor side.

During transport pay attention to the balance point

116

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

min.2000 mm

min. 200 mm min. 1000 mmmin. 600 mm

1950 mm

925 mm

condensation outlet

heating side and electrical connections

Space requirements

In order to guarantee maintenance and operation of the heat pump, following minimum distance has to be observed (for operation and maintenance).

The minimum distances must be respected, because of the case of maintainance and to prevent air-short-circuits.

View from above

117

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

min.2000 mm


min.2000 mm

min. 1000 mmmin. 600 mm

condensation outlet



condensation outlet

min.2000 mm

min. 600 mm

min.2000 mm

min. 1000 mm

min. 600 mm

min.2000 mm

min.2000 mm

Anschlüsse

Side by side it is possible to cascade up to 5 TERRA AL Twin heat pumps. The minimum distances must be respected, because of the case of maintainance and to prevent air-short-circuits.

Space requirements cascade

Type 1

Type 2

When positioning as shown in example two, there are only 2 heat pumps possible. The minimum distances must be respected, because of the case of maintainance and to prevent air-short-circuits.

View from above

View from above

118

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Foundation construct ion

The ground must be a firm and level surface. It is possible to install concrete bases or other good bearing components. The load capacity must be guaranteed.

The air source heat pump have to be positioned at least 20 cm higher the the surrounnding area.

If the base is lower than the expected snow level, the suction must be kept free of snow snowfall.

The maximum length of the hydraulic interconnections between Hygienik or heating buffer and heat pump must not exceed 35 m. Please note when planing the position of the concrete base

The condensation run off and the hydraulic and electric connections are located on the rear (air inlet) of the heat pump.

View from above

897

(925

)

1923 (1950)

378

71 134

630

210285

607

1778

hydraulic and electrical connections

condensation outlet

119

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

800

mm

min. 200 mm

heating side connections


Well/pipe 300 mm

electrical connections

Canalisation

concrete base

Special actions have to be set for the appearing condensate. As a result of a defrosting circle up to 15 lt. condensate within 2 minutes can occur. It must be ensured, that the condensate is discharged. The condensate outlet must be secured by the pre-mounted heating cable.

300

925

1950

200500

925

1950

200200

The ground must be a fi rm and level surface. It is possible to install con-crete bases or other good bearing components. The load capacity must be guaranteed.

condensat ion run-of f

Type 1

Possible ground plan of the concrete base

Type 2

120

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

121

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

The ingenious control program of the integrated microprocessor control NAVIGATOR® is de-signed to function with the efficient heat pump operation, the entire heat pump system is actu-ated as required and is equipped with a variety of monitoring, safety and reporting functions.







Up to 5 heat pumps in cascade can be controlled Thereby an overall heating output of 300 kW is possible




5.4.6. TERRA AL 60 Max

The TERRA AL Max is a compact air source heat pump for outdoor installation.

The control is done via the in wall cabinet im-plemeneted NAVIGATOR®. As standard heating and domestic hot water production and cooling can be done.

The heat pump is ideal for monovalent heating and cooling of bigger sites with low temperature heating systems, under-floor, ceiling or wall heat-ing or low temperature radiators

The TERRA AL 60 Max works with two compres-sors and two refrigerant circuits Thereby realises a performance related stage control of both com-pressors. During one refrigerant circuit work in heating mode the second can do the defrosting. Additional the two separate refrigerant circuits ensure highest operation reliability.A multitude of applied SRS-actions(sound reduction system) ensures low sound levels.

The special compressors work with an in between refrigerant injection. Thereby inlet flow tempera-tures of 62°C can be reached at deep outdoor temperatures (up to -20°C).

TYPE TERRA AL 60 Max


Heating output 58 kW



122

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

scope of delivery refigerant circuit:2 pc. suctions gas cooled scroll compressors2 pc. electronic expansion valves2 pc. largely dimensioned multi-row Al/Cu finned tube evaporatorspecial speed-controlled axial fancopper soldered stainless steel plate heat exchangerintegrated changeover valve for defrosting and cooling

0 5 10 15 20 25 30 35 40 45 50

4

6

8

10

12

14

16

18

20

2

[°C]

[°C]

R410A

0-20 -15 -10 -5 0 5 10 15 20 25 30 35

20

25

30

35

40

45

50

55

60

10

[°C]

[°C]

R410A

40 45

65

Heating Cool ing

fl ow

tem

pera

ture

outdoor temperatue outdoor temperature

fl ow

tem

pera

ture

scope of delivery in general:Navigator control in control cabinet sensor package2 starting current limiters2 pc.compressor heating unitsflow control sensorcondensation run off try with frost protectionOptimum heat and noise insulated casing

T

T

T

B53

M43

M33

T

M

T

PT

FIL

T T

M

T

A

B

HygienikTERRA AL Max

HW

CW

RE (A)

HC (A)

FS

BufferHygienik

internal

electrical cabinetOS

Throttle valve

123

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Technical data Unit AL 60 Max

Heating capacity at A 2/W 35 [kW] 58,25


Heating capacity at A -7/W 35 [kW] 48,49


Heating capacity at A -7/W 55 [kW] 43,20

Heating capacity at A 2/W 35 (1 compressor) [kW] 29,03

Heating capacity at A 7/W 35 (1 ompressor) [kW] 37,27

Power consumption at A 2/W 35 [kW] 16,55


Power consumption at A -7/W 35 [kW] 16,84


Power consumption at A -7/W 55 [kW] 21,82

Power consumption at A 2/W 35 (1 compressor) [kW] 8,29

Power consumption at A 7/W 35 (1 compressor) [kW] 8,45

COP at A2/W35 3,52

COP at A7/W35 4,43

COP at A-7/W35 2,88

COP at A2/W35( 1 Verdichter) 3,50

COP at A7/W35( 1 Verdichter) 4,41

Cooling capacity at A35/W18 [kW] 70,52

Cooling capacity at A35/W7 [kW] 49,20

Cooling capacity at A35/W18 (1 Verdichter) [kW] 35,05

Leeistungsaufnahme at A35/W18 [kW] 21,31

Power consumption at A35/W7 [kW] 20,85

Power consumption at A35/W18 (1 Verdichter) [kW] 10,65

EER at A35/W18 3,31

EER at A35/W7 2,36

EER at A35/W18 (1 Verdichter) 3,29

Sound data TERRA AL 60 Max Normal operation Night operation

Sound power full load dB(A) 79,9 78,1

Sound pressure level in 5 m (an Fassade) dB(A) 60,9 59,1

Sound pressure level in 10 m (an Fassade) dB(A) 54,9 53,1

Sound power partial load dB(A) 76,9 75,1

Sound pressure level in 5 m 1-stufi g (an Fassade) dB(A) 57,9 56,1

Sound pressure level in 10 m 1-stufi g (an Fassade) dB(A) 51,9 50,1

124

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

AL 60 Max

Maximum fl ow temperature °C 62

Nominal fl ow rate heating water (A7/W35 5KΔT m³/h 12.90

Nominal fl ow rate heating water (A7/W55 8KΔT) m³/h 6.90

Pressure loss condenser at nominal fl ow kPa 6.0

max. operating pressure heating side bar 3

fl ow and return connection R 2“ AG

Installed condensation outlet R 1“ AG

Installed fan owl wing - axial fan

Nominal air quantity m³/h 2 x 11,000

Power input fan W 200

Refrigerant used R410A

Compressor stages 2

Filling level of compressor oil lt 2 x 3.3

Filling level of refrigerant agent kg 2 x 14.8

Filling level of compressor oil lt 2 x 3.3

Electrical data

electrical connections compressor/heating element/fan V/Hz 3+N 400/50

electrical connection controller A 1x230/50

Initial current (compressor and fan) A 99.51

operating current compressor A 2 x 21.61

operating current fan A 2 x 1.45

Power uptake fans (overall) W 2 x 620

fuse main current A C 50

fuse control current A B 13

fuse heating element (up to 9 kW) A B 13

125

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Heat output at di f ferent f low temperatures and ful l power (2-stages)

Heat output at di f ferent f low temperatures and par t ial load (1-stage)

0

10

20

30

40

50

60

70

80

90

100

20 15 10 5 0 5 10 15 20

W35

W45

W55

W62


heat

out

put [

kW]

0

10

20

30

40

50

60

70

80

90

100

20 15 10 5 0 5 10 15 20

W35

W45

W55

W62

heat

out

put [

kW]

outdoor temperature [°C]126

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Instal lat ion instruct ions

The TERRA AL 60 Max is only designed for exte-rior installation. Special actions has to be set for frost protections.

Despite the possibility of speed reduction, the heat pump should not be positioned adjacent to a living room or bedroom. The relevant installation guidelines conforming to EN 378, for example, must be observed.

Onsite preparat ion

Foundation:The foundation should be level and stable. A base can be provided by the customer or a paving slab can be laid on a gravel base. The air source heat pump should be positioned slightly higher than the immediate site profile.

Space requirements:The heat pump must be positioned so that there is sufficient space for air intake and air outlet (see minimum distances for exterior installation). It should not be possible for the inlet and exhaust air openings to become blocked by snow, leaves, etc. Installation in wall niches is to be avoided.

Inlet air:The inlet air must be free of impurities such as sand and caustic materials such as ammonia, sulphur, chlorine, etc.

Condensat ion run-of f

Air source heat pumps generate condensed wa-ter when in operation. Per defrosting cycle, i.e. within 2 minutes up to 15 lt. of condensate can accumulate. The condensation outlet should be conveyed into the waste water channel by using the appropriate pipe diameter for the machine.

The condensate must be able to run of also at temperatures below 0 °C. The easiest way to guarantee is by using the mounted heating cable, aktivated by the Navigator control.

Heating connect ions

The heating connections must be installed with the flexible hoses which are available as accessories.

In general, all lines outdoors should be kept as short as possible. All pipes and wall openings must be professionally heat-insulated and frost-protected during installation.

127

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Platc ing the heat pump on s i teWhen the heat pump is loacated on its fi nal site, the crate can be removed. The standing feet are turned upwards, and

the pallet is removed. Subsequently, the heat pump must be leveled.

During transport pay attention to the focus! On the heatpump you find stickers marking the focus.

Space requirementsIn order to guarantee maintenance and operation of the heat pump, following minimum distance has to be observed

(for operation and maintenance).

min.2000 mm


3272 mm

895 mm

condensation outlet

heating side and electri-cal connections

The minimum distances must be respected, because of the case of maintainance and to prevent air-short-circuits.

Transpor t

When placing the heat-pump on site, the transportation crate must not be removed. The heat pump can be placed by forklift or crane to the concrete base. When the heat pump is located on its final site, the crate may be removed.

balance point

128

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s


min.2000 mm

min. 1000 mm


min.2000 mm

min. 800 mm

min.2000 mm

min. 1000 mm

min. 800 mm

min.2000 mm

min.2000 mm

connections

view from above

View from above

Side by side it is possible to cascade up to 5 TERRA AL 60 Max heat pumps.

When positioning as shown in example two, there are only 2 heat pumps possible. The minimum distances must be respected, because of the case of maintainance and to prevent air-short-circuits.

Space requirements cascade

Type 1

Type 2

129

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at p

um

p ty

pe

s

Foundation construct ion

The ground must be a fi rm and level surface. It is possible to install concrete bases or other good bearing components. The load capacity must be guaranteed.The air source heat pump have to be positioned at least 20 cm higher the the surrounnding area.

If the base is lower than the expected snow level, the suction must be kept free of snow snowfall.

The maximum length of the hydraulic interconnections between Hygienik or heating buf-fer and heat pump must not exceed 35 m. Please note when planing the position of the concrete base.

The condensation run off and the hydraulic and electric connections are located on the rear (air inlet) of the heat pump.

3060

89

108

720

285 210

149

115

1354 606

55

1530 1530

View from above

air outlet(fan)

2 x condensate run off

hydraulic and electrical connections

air inlet(evaporator)

air outlet(fan)

height adjustablebase feet (6 pcs.)

130

1

2

3

4

5

6

7

8

9

10

11



5. HEAT PUMP TYPES

Heat pump manual

He

at

pu

mp

ty

pe

s

Special actions have to be set for the appearing condensate. As a result of a defrosting circle up to 15 lt. condensate within 2 minutes can occur on every evaporator unit. It must be ensured, that the condensate is discharged. The condensate outlet must be secured by the pre-mounted heating cable.

The ground must be a fi rm and level surface. It is possible to install concrete bases or other good bearing components. The load capacity must be guaranteed.

Condensat ioin run-of f

Possible ground plan of the concrete base

800

mm

min. 200 mm

heating side connectio


Well/pipe 300 mm

electrical connections

Canalisation

concrete base

concrete base

925

3260

200200

13301330

200

131

1

2

3

4

5

6

7

8

9

10

11


(C) IDM ENERGIESYSTEME GMBHheat pump manual

He

at ex

tractio

n sy

stem

s

6.1. Horizontal heat exchanger

Depending on implementation type, standard deli-very contents include plastic pipe, connection unit with manifold with shut-off valve on each circuit of the flow and return, a safety valve, manometer, two thermometers, expansion tank, strainer and a brine circulating pump.

All plastic pipes with a diameter of ø25x2,3 mm should be laid in a depth of 1,2 m at a length of 100 m. Depending on the power of the heat pump, several circuits may be necessary.

Heat extraction differs according to the soil qua-lity. Heat extraction decreases as soil gets drier and vice versa. 1 kW heating power requires 30 - 40 m2 of ground.

Individual constructions types of houses and buildings together with heat pump installation locations influence the length of pipes between the manifold, ground loop and heat pump.

Connection pipe and brine therefore have to be provided on site. The brine has to be pre-mixed for an operation temperature of -15°C. The anti-freeze quantity should form approximately 30% of the mix.

As the pressure drops in the pipes increase with decreasing temperature and with higher concen-tration of glycol, the appropriate mixing ratio should be complied to.

Fig.: Heat extraction using horizontal ground loop 0

1,2

1

1,4

1,6

1,8

2

10 20 30 40 50 [Vol.%]

Concentration of the brine portion

Pressure drop at -5°C

Pressure drop at 0°C

Rela

tive

pres

sure

dro

p

Fig.: Relative pressure drop

132


1

2

3

4

5

6

7

8

9

10

11




heat pump manual

He

at

extr

act

ion

sy

ste

ms


1. Pipes should be laid several months before the next heating period. Sufficient lead time has to be considered.

2. Moist and loamy soil is best suited heat gain.

3. Rainwater should not be channelled through drainages as it is required for soil regenerati-on.

4. Ground loop has to be covered with sand to avoid damage.

5. Once sand has been poured, a warning tape sould be laid 0,5 m above the pipe to avoid later damage.

6. A layout plan should be drawn up.

7. In case of ground loop systems, the covering surface must not be sealed (eg. tarmac).

8. Deep-rooted plants should be avoided.

9. In order to avoid water condensation and ice formation, the brine-pipe inside the house should be coated with a damp-proof insulati-on.

10.The brine-pump and the brine-expansion tank have to be placed on the brine inlet side of the heat-pump („warm side“).

11.The expansion tank in the brine circuit should be installed overhead the brine circuit.

12.Only IDM anti-freeze should be used.

133

1

2

3

4

5

6

7

8

9

10

11




heat pump manual

He

at ex

tractio

n sy

stem

s

Technical data

60

190

1 1/4”

connection pipe to the heatpump on site

PE-plastic pipe Ø 25

manifold length L

connection set

Important note:

TERRA SW 6-17 HGL Complete got the brine connection set integrated in the heat pump!

Type FKS 3 4 5 6 7A

Number of circuits 3 4 5 6 7

Total pipe length [m] 300 400 500 600 700

Surface demand [m2] 240 320 400 480 560

Connection pipe ø [mm] 32 40 40 40 50

Manifold length, L 180 240 300 360 420

Brine mixture (liters)2 105 140 175 210 245

Type FKS 8 12 15 18

Number of circuits 8 12 15 18

Total pipe length [m] 800 1.200 1.500 1.800

Surface demand [m2] 640 960 1.200 1.440

Connection pipe ø [mm] 50 63 63 75

Manifold length, L 480 660 900 1080

Brine mixture (liters)2 280 420 525 630

1 Pump models: xx/xx = Wilo Top S

2 Brine-mixture for PE-plastic piping ø25 x 2,3 mm (30% anti-freeze), without content inside of the collection pipes

Laying distance: ca. 80 cm

Laying depth: 110 – 120 cm

PE plastic pipe Ø 25 x 2.3 mm in rings each of 100 m; connection unit with manifold with shut-off valve for each circuit in the flow and return lines, safety valve, pressure gauge, 2 thermometers, expansion vessel, dirt trap and brine circulating pump

134

1

2

3

4

5

6

7

8

9

10

11




heat pump manual

He

at

extr

act

ion

sy

ste

ms

6.2. Borehole heat exchanger

A plastic pipe probe is inserted inside 150 mm borehole and is back-fi lled. The depth of the bore-hole usually is maximal 100 m. If required, more boreholes can be drilled. Depending on the soil quality, a heat pump can provide 1 kW heat per 15 - 20 m depth.

Delivery contents include a single or dual U-probe with probe-head, installed and fi lled.

The probes are fi llled with water after installation. The water is replaced by the brine-mixture before activation.

The connection set includes brine pump (confi gu-red for maximal pipe length between heat pump and manifold of 15 m), safety valve, manometer, two thermometers, strainer and expansion tank.

The confi guration of the manifold depends on the type of the probe. Delivery includes fl ow and re-turn manifold with sluice gate, screwing joints for probe pipe, spigot for fi lling and discharging and a clamping console.

When using more than six single-U-probes or more than four dual-U-probes, two manifolds must be used.


1. Boreholes should be located a minimum of 5 m apart from each other.

2. The borehole depth depends on heating capa-city, not heat pump‘s performance.

3. Considering a simple planning, 50 W/m should not be exceeded.

4. Moist and loamy soil or rock are best suited for heat gain.

5. To avoid water condensation and ice formati-on, the brine pipe inside the house has to be coated with damp-proof insulation.

6. The brine-pump and the brine-expansion tank have to be placed on the side of the heat pump („warm side“).

7. The expansion tank in the brine circuit has to be attached upwardly in relation to the brine-circuit.

8. Only IDM anti-freeze should be used.

Note:

In the TERRA SW 8-17Complete HGL the brine con-nection set is already included in the heat pump

Fig.: Heat gain using borehole heat exchange

135

1

2

3

4

5

6

7

8

9

10

11




heat pump manual

He

at ex

tractio

n sy

stem

s

6.3. Ground water systems

Heat source systems for water source heat pumps are usually implemented as wells. They comprise the following parts:

Well catchment area / bog tube

Water extraction can result in the well‘s environ-ment being washed out. The material is not only sucked upwards, it can also form deposits. A well catchment area is necessary to absorb this fine grained material and to ensure smooth transport of groundwater over prolonged periods. As a result, the groundwater pump doesn‘t have to be dismantled for maintenance purposes.

Well plug

This is a less pervious soil to prevent pollutants from advancing into the well. The coat forms a funnel-shaped ending around the well.

Well ventilation / well coverage

Every well has to be equipped with a well ventila-tion. The vent has to be provided with a 1 mm fine grained grid to prevent insects from invading. The shrouding has to be shaped with a slope to the exterior to prevent surface water from soaking in. A sealing has to be attached to the cap to prevent pollutants and insects from entering.

A heat pump requires between 150 - 180 litres of water per hour to provide 1kW of heatin power.

The following should to be provided on-site: water conduit to the heat pump, well pump (groundwa-ter), base valve, filter, water meter (if prescribed), sluice gate and throttle valve.

Ventilation

Well catchmentarea

Filter tube

Compact tube

Well plug

GWL

Ground level

Fig.: Gaining heat using groundwater

136

1

2

3

4

5

6

7

8

9

10

11




heat pump manual

He

at

extr

act

ion

sy

ste

ms


1. The groundwater in the supply pipe to the heat pump must only cool down slightly and the supply pipe has to be laid frost-proofed.

2. In case of an inapplicable water quality and for the avoidance of frost damages, a safety heat exchanger has to be installed.

3. If there is a higher amount of solid stuff in the well (sand, mud) a setting basin has to be crea-ted, to prevent a congestion of the savety heat exchanger.

4. From the extracting well to the heat pump an additional safety pipe for the electrical wiring of the well pump is necessary.

5. the well cover has to be done light and air proof, to prevent alga an sludge formation.

6. After finishing the well should be flushed for 48h

Information about the safety heat exchanger

To prevent corrosion and frost damage to the plate heat exchanger in the heat pump, IDM-Energiesysteme offers the possibility of a safety heat exchanger. This means that the ground water circuit of the heat pump is uncoupled via a safety heat exchanger through a brine circuit. Possible damage in the ground water circuit or in the safety heat exchanger therefore does not cause any subsequent damage to the heat pump.

In the safety brine circuit a antifreeze compound mixture with 25% Propylenglykol has to be used.Its only the from the IDM Energiesysteme appro-ved antifreeze compound allowed.R

ca.1

,3m

ca.0,6m

min

0,

5mm

in

0,5m

T

T

m³/h

SAFETY heat -exchanger set

flow meter

Brine intermediatecircuit

water flow meter(if required for the government),

else insert adapter pipes out of stainless /galvanized steel,plastic or

throttle valve

bypass pipe forflushing the well

filter: mesh width min 0,4mm max 0,6mm

ground water flow directionmin. 15 m

dry well suction-/extraction well

comprising:Stainless steel plate exchanger (copper soldered), expansion vessel, safety valve, circulating pump inclu-ding the necessary antifreeze for the intermediate circuit

Fig.: Schematic structure of a water source heat pump with a safety heat exchanger

137

1

2

3

4

5

6

7

8

9

10

11



Co

ntro

l

7.1. Navigator control

The NAVIGATOR ® control is a fully automated control unit, which has been developed especially for use with IDM heat pumps.

The NAVIGATOR ® control can be used for fully automatic control of up to seven heating and cool-ing circuits.

The control unit will operate properly if the work of the heating installer and the electrician is carried out neatly and the unit is correctly commissioned by a trained service technician.

Funct ional descr ipt ion

Heat pump types

The Navigator control is used to completely manage air, brine and water heat pumps. The dynamically structured control menu displays the parameters relevant for the machine type, accord-ing to the configuration.

Version with or without HGL-Technique

The heat pumps can be provided either with or without HGL. The HGL version contains an addi-tional HGL heat exchanger. While the heat pump is operating in heating mode, part of the flow is routed to the HGL exchanger via a distribution valve, so that it is regulated at the adjustable HGL temperature.

System operat ing modes

The system operating modes define which pro-gram the heat pump should carry out.

Off

The system only performs the antifreeze function. All other functions are deactivated.

Automatic

Tap water specifications and heating and cooling circuits are administered according to set heating times.

Hot water

The system only processes tap water during the priority charging periods and in response to external demand.

138

7. HEAT PUMP CONTROL

1

2

3

4

5

6

7

8

9

10

11



7.STEUERUNG/REGELUNG

Heat pump manual

Co

ntr

ol

One-time hot water charging

The Hygienik unit is heated once when the switch-on conditions are fulfilled.

Heat pump operat ing modes

Heat ing mode

Im Heizbetrieb bewirtschaftet die Wärmepumpe Puffer und andere Verbraucher nach den jeweils eingestellten Kriterien. Besteht eine Anforderung, werden alle benötigten Ventile (erzeugerseitig) in Stellung Heizen gebracht und der Verdichter eingeschalten.

Cool ing mode

Depending on the hydraulic system and the heat pump version, the cooling mode can be designed with a process inverter or direct cooling; or switch-able with direct cooling and/or process inverter..

Not available

Cooling is not available, or has been deactivated.

Passive

Passive cooling takes place with ground water or brine from deep boreholes, in which case the cooling is provided by the heat source via a cool-ing heat exchanger.

Active

The machine has a process inverter (P) and the cooling function is employed. When cooling is demanded, the heat pump operates in an inverted process and a cold reservoir is administered.

Passive + Active

It is possible to provide both passive cooling using the cooling heat exchanger and active cooling using the heat pump in an inverted process.

System cooling

Der Kühlkreislauf wird auf der Wärmequellen-seite der Wärmepumpe eingebunden. Damit ist entweder Passivkühlung oder aktive Kühlung mti der Wärmepumpe möglich. Die Abwärme kann dabei für die Warmwassererwärumg bzw. Warm-wasserbewirtschaftung genutzt, oder ins Erdreich zur Regeneration abgeführt werden.

Prior i ty mode

In the priority mode, the reservoir charging is car-ried out preferentially. In heat pumps with HGL technology, the HGL valve is opened completely, so that the whole flow passes via the HGL ex-changer.

In Basic heat pumps, a three-way valve serves to redirect the HP flow to the upper part of the reservoir.

In any type of priority charging, the speed of the charging pump is reduced in order to achieve the priority temperature set-point.

Defrost ing

The defrosting function is an operating mode with the Terra CL air heat pump, during which icing produced by condensate (generated during heat removal) is eliminated.

Defrosting is fully automatic and is regulated in line with demand through permanent measure-ments by the intake and evaporator sensors. To defrost, the internal four-way valve in the cool-ing circuit is switched, so that the evaporator is heated.

139

1

2

3

4

5

6

7

8

9

10

11



7. STEUERUNG/REGELUNG

Heat pump manual

Co

ntro

l

Heating and cool ing system

Über das Heiz- und Kühlsystem können die jewei-ligen Heizkreise konfiguriert werden.

None

The heating circuit is not activated

Uncontrolled

The heating circuit is designed as a pump heating circuit. The heat flow temperature is regulated by switching the heat pump on and off. By definition, this leads to considerable temperature fluctuations in the heating circuit.

Controlled

The heating circuit operates as a mixer heating circuit

Constant

The mixer heating circuit is operated with a fixed temperature for heating and cooling within the specified heating and cooling tolerances.

The constant temperature for the respective heat-ing/cooling circuit is set using the parameters “Heating flow” and “Cooling flow”.

Temperature difference controlled

The heating circuit is working as temperature dif-ference controll (hysteresis,threshold, maximum value configureable)

Heating and cooling circuit functions

Each heating and cooling circuit can be config-ured to heat, cool or both. Since only one switch-ing valve can be used to switch between heating and cooling for the heating part, the system pip-ing must be carefully planned. Heating circuit A is the heating circuit which handles the switching of the cooling valve on the heating side.

Automatic

The heating circuit can both heat and cool. If heat-ing circuit A has been configured as an automatic heating circuit, the switching of the cooling valve on the heating side is handled by this circuit. For heating circuits B-G, the display states “As heating circuit A” instead of “Automatic“.

Heating only

This heating circuit is hydraulically speaking only suitable for heating. No cooling demand is gener-ated from this heating circuit.

Cooling only

The selected circuit is only designed for cooling. This circuit does not generate any demand for heating.

Heating c ircui ts

Room temperature normal heating

Specifies the required room temperature for nor-mal operation.

Room temperature ECO heating

Specifies the required room temperature for ECO operation. This temperature applies to the ECO operating mode.

140

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

Heating limit

If the registered outside temperature exceeds this value, the heating operation is disabled. Heating is not enabled again until the value is 1K less than the heating limit.

Heating flow

Specifies the flow temperature set-point in a con-stant heating circuit.

Cool ing c ircui ts

Room temperature normal cooling

Specifies the required room temperature for nor-mal (cooling) operation.

Room temperature ECO cooling

Specifies the required room temperature for ECO operation. This temperature applies to the ECO operating mode and outside the set times.

Cooling limit

If the registered outside temperature exceeds this value, cooling operation is enabled for the individual circuits.

Heating and cool ing operat ing modes

Off

The heating circuit is not in operation, except for defrosting purposes.

Timer program

The heating and cooling circuits are operated according to the specified weekly program. In the ECO mode, the constant circuit is switched off. An uncontrolled circuit without room units also switches off in the ECO mode. For cooling operations, all heating circuits are switched off in the ECO mode.

Normal

The heating circuit is always operated at the specified nominal temperature. It is only switched off according to the specified criteria.

ECO

In the ECO mode, the heating circuit pump is switched off until the low temperature set-point is reached.

If there is a switch from normal operation to reduced operation during heating or cooling op-erations, the unit first switches to rapid reduced operation. The heating circuit pump switches off for at least 10 minutes or until the low temperature set-point + 1K is reached.

Manual heating

An outdoor temperature of 7°C is accepted for the respective circuit.

Manual cooling

the individual circuits are operated with the pre-seted cooling temperature indepent of the heat and cooling limit

To prevent structural damage, the customer must ensure that dew-point monitoring is carried out, particularly for wall or floor heating, by a room humidity sensor in com-bination with a room unit or by a dew-point monitor with switching converter.

141

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntro

l

Heating cur ve

The steepness of the heating characteristic curve indicates the relationship between the outside temperature and the required flow temperature.

The greater the steepness of the characteristic curve, the higher the flow temperature for the heating depending on the outside temperature and the heating and cooling limits.

The max. flow temperature and the min. flow tem-perature give rise to an upwards and downwards temperature limit.

Room inf luence on heat ing and cool ing c ircui ts

A room sensor or a room thermostat can be con-nected for each heating circuit. If a room unit (room sensor) is installed, the flow temperature can be corrected according to the room influ-ence. If the Navigator is set to an operating mode which uses a timer program, the operating mode of the heating circuits can also be switched.

Flow

tem

pera

ture

Outdoor temperature

Flow temperature

Flow

tem

pera

ture

Flow temperature

Gradient of characteristic line

Outdoor temperature

In cooling operation, when using a room humidity sen-sor in combination with the room unit, the hand wheel on the room unit must be in the centre position and it must not be adjusted! Adjusting this will lead to a false dew-point for the respective heating circuit!

142

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

Floor screed heat ing

The floor screed heating program can be used to dry new floor screed under controlled conditions. According to DIN EN 1264-4, the program may not be used on cement screed until 21 days after installation. On anhydride or calcium sulphate screed, the program may be used 7 days after installation at the earliest.

To heat the screed, the heating circuit must be set as floor heating circuit.

When heating floor screed, the heating circuit as-signed to the task will start at the lowest possible temperature. The flow temperature set-point will be increased by the specified temperature incre-ment every x days. Once the maximum tempera-ture setting has been reached and the screed time at temperature has passed, the flow temperature will be reduced by the specified temperature increment every x days, until the minimum screed temperature is reached again.

In the event of a power cut, the floor screed heat-ing program will restart from the point where it was interrupted.

During the floor screed drying, ensure sufficient ventilation in the rooms.

Avoid supply air in this case.

With the floor screed heating program, the floor screed is not required to have reached the moisture content required for floor laying!

To prevent overload on the ground collector array or on the depth probe by the extraordinary load, a second heat generator must be used for the floor screed heating (e.g. elec-tric heating element).

143

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntro

l

Hot Water

Hot water provis ion

In fresh water mode, the hot water is heated using a plate heat exchanger. When the hot water tap is turned on, the pump switches on. Hot water flows from the highest section of the reservoir via a plate exchanger to the lower section. The temperature of this water is measured using a fast-acting sensor on the plate exchanger outlet and the speed of the plate exchanger pump is subsequently controlled.

As soon as the withdrawal of hot water stops, the plate exchanger pump is stopped by the flow switch in the cold water supply.

Variable input as prior i ty requirement

The digital input (variable input) can be config-ured as an input for priority charging with the Navigator control. If there is an input signal, hot water charging is generated independent of the priority time program. The hot water charging stops again when the external contact on the vari-able input opens again.

Hot water c irculat ion

A hot water circulating pump can be activated using the Navigator control.

For hot water circulation, the circulation times specified in the time program can be adjusted. Outside the circulation times, the circulating pump switches on when a flow rate (e.g. by turning on a hot water tap) is detected for >1 and < 3 sec. When the adjustable runtime elapses, the circulating pump is disabled for the adjustable pause time.

1. To make the most of the reservoir capacity, the desired hot water tap temperature should be set to between 45 and 48 degrees Celsius.

2. The plate heat exchanger must be regularly cleaned and de-calcified

144

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

Bivalent operat ion

With the control, a second heat generator can be activated. The activation of the second heat generator depends on the respective bivalence strategy setting and the type of operating mode - either dependant on the outside temperature (alternative) or dependant on outside tempera-ture and flow temperature (parallel, parallel/alternative):

Operating modes:

– “Not available“: No 2nd heat generator – “Heating“: The 2nd heat generator is only available for heating.

– “Hygienik“: The 2nd generator is only available for the heating of fresh water (heating the Hygienik).

– “Heating+Hygienik“: The 2nd heat generator can be used for both heating and for fresh water heating.

Bivalence strategy:

– “Parallel“: If the outside temperature falls below the bivalence point 1, the switching algorithm for the external stage is initiated.

– =”Alternative“: If the outside temperature falls below the bivalence point 1, the external stage is activated when heat is required and the com-pressor stages are disabled.

– “Parallel/alternative“: If the outside temperature falls below the bivalence point 1, the switching algorithm for the external stage is initiated. If the external temperature falls below the biva-lence point 2, the external stage is activated when heat is required and the compressor stages are disabled.

Solar control

WIth the navigator control in two differnt ways the solar control can be realized.

Solar control solar coi l heat exchanger

WIth the navigator control a solar control with solar coil heat exchanger can be done.(without additional solar control board)

solar control plate heat exchanger

As accessories available additional solar plate, which is connected through CAN-BUS with the navigator control, the navigator cantrol can do a solar control.

145

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntro

l

Special funct ions

External demand

External selection can be carried out using a floating contact. In addition, external switching between heating and cooling can be performed using a floating contact.

Uti l i ty blocking

The blocking times can be programmed on the control. These blocking times relate to the energy supply of the responsible utility company. During the blocking times, the heat pump is not selected. The heating circuit pumps continue to operate. Using a floating contact, it is also possible to block the heat pump with a ripple signal.

fan speed control

To decrease the noise level, it is possible to reduce the speed of the evaporator fan. In the day program “fan speed reduction”, these times can, for instance, be set to night-time. If the noise level does not matter, we recommend leaving the speed at the normal setting.

Siphon heat ing

If the customer uses siphon heating, it can be managed using the Navigator control. A separate port is available on the Navigator control for this purpose.

Systemfrostschutz TERRA AL

The heat pump Terra AL is equipped with an antifreeze function for the outside unit.. If the out-side temperature falls below the frost protection temperature and the flow temperature of the heatpump becomes lower than the minimum tempera-ture, the antifreeze function is activated.

Measuring the heat quant i ty

The Navigator 1.0 control can be used to measure the heat quantity. This requires the installation of a flow meter in the heat pump flow. The flow me-ter and the flow and return flow temperatures are used by the control to calculate the heat quantity.Heat pumps with the Navigator 1.7 heat quan-tity measuring is done via the refrigerant side compressor characteristics map,therefore no flow meters are necessary.

Modbus TCP IP

The modbus TCP IP communicationis with all heat pumps with Navigator control possible.

146

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

EIB/KNX Modul

The EIB/KNX Modul which is available as an accessory, the heat pump is EIB/KNX capable, so the heat pump can communicate with EIB/KNX equipment.

Remote Control

With the IDM navigotor - remote control program heat pumps can over a lokal network or internet with a pc controlled or monitored

Apps for IOS and Android

With the apps for IOS and Android a remote control/maintance can be done on the navigator control

SD card funct ions

Program updates can be carried out using the SD card. When a program update is carried out, all parameters are retained.

On the NAVIGATOR® control, all the relevant input and output statuses and values are stored on the SD card every 15 seconds.

147

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntro

l

7.2.Smar t Grid Al l heat pumps with Navigator are Smar t Grid ready

7.2.1 Photovol taic ExtensionOwn consumption PV current

Description

The heat pump (Navigator control) communicates via a signal with the inverter (3) of the PV-Sytem. If solar current is available, the heat pump is us-ing this solar current (optionally in conjunction with power from the electric supply company) to execute the tap water preparation and to raising of the heating buffer and floor heating setpoint..

Calculation own consumption

The electric meter (1) measures the total quan-tity of the produced PV-current. Not used electric power will be feed into the public electricity grid. A separate bidirectional counter (2) collect this energy spill-over. The outcome of the difference between produced and the surplus of solar power is the own consumption.

148

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

For using PV current following signals from the PV inverter resp. from an energy consumption controller can be used for communication with the Navigator control:

– Level switch (potentialfree contact)

– S0-connection

– 0-10V signal

– Communication with Solar-Log

–

Communicat ion with non modulat ing heat pumps

At all non modulating heat pumps the potential-free contact (level switch), the S0-connection, the 0-10V signal and the Ethernet communication with Solar-Log can be used for the operation of the heat pump with PV-current. At Twin heat pumps the switching on and off of the compres-sor stages occurs via the stored characteristic diagram of the power consumption of the com-pressors.

Communicat ion with modulat ing heat pumps

At all modulating heat pumps the S0-connection, the 0-10V signal and the Ethernet communication with Solar-Log can be used for the modulating operation of the heat pumps with the actual pow-er of the PV system.

149

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntro

l

7.3 NAVIGATOR® Pro 2.0

The NAVIGATOR® Pro 2.0 is a building energy manager which communicates whith the IDM single room control, the IDM heat pump and the internet (myIDM). The communication between the NAVIGATOR® Pro 2.0 and the zone modules, as well with the wired room sensors is done via a bus system. For the connection to the internet (myIDM) and the communication with the the heat pump an ethernet connection (network cable) with the router/switch is necessary.

ZONE 618°C

ZONE 524°C

ZONE 222,5°C

ZONE 121°C

ZONE 421°CZONE 3

22,5°C

single room- and heat pump control with• 4x9 rooms/zones with a time program• 3 comfort stages Eco, Normal, Comfort with temperature-tolerance bands• remote control via smart phone/tablet APP• weather forecast-supported control• heating and cooling• learning system to optimize the energy usage.

High comfort - low power consumption:• Weather: outdoor temperature (actual) and so-

lar radiation (forecast) infl uence the control of the zones: Thereby the NAVIGATOR® prevents an overheating at sunshine and a cooling at overclouding.Building: NAVIGATOR® Pro 2.0 learns the curve of every room and adjust the heat pump running times to this. The room has to the right time the optimum temperature.

Green electricity: • The NAVIGATOR® Pro 2.0 uses the optimum

power rate - from the grid or from the PV- oder von der PV-Anlage - according to the sun-forecast.

• Usage: The NAVIGATOR® Pro 2.0 recognizes changes in the usage and adjust itself to this - e.g. more people are in the room and thereby the room heats up faster.

150

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

Components s ingle room temperature control

Zone module

The zone module controls the actuators based on the heating and cooling requirement from the room sensors and according to the settings from the Navigator Pro 2.0. Actuators with 230V can be connected directly to the zone module. Actu-ators with 24V need a transformer on site. The zone module should be placed near the heating circuit distributor of the radiant panel heating.

When the zone modul is installed in a plant room or distributor cabinet, the wiring of the actuators and the wiring of the tethered room sensors must be done to the zone modul.

Please note following directives for positioning the zone module:

– Position the zone module (if possible) directly inside the heating circuit distributor

– Make sure that the cover of the zone module can be removed easily

– Make sure that the plugs and the electrical connections on the zone module are easily accessible

The mounting position of the zone module is ar-bitrary.

Dimensions:

350 x 110 x 60 mm (L x H x D)

151

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntro

l

Room sensors

The usage of tethered room sensors or wireless room sensors is possible. For cooling mode room sensors with temperature and humidity capturing are available/necessary. The Navigator Pro 2.0 can be used as room sensor for temperature and humidity capturing also. At usage of wireless room sensors, the wireless gateway sensor, which is connected via a bus cable to the zone module, can be used as room sensor for temperature and humidity capturing also.

Make sure that the room sensors are not mounted above heat sources, that they are not subjected to direct sunlight or other influences, which con-tain that the temperature inside the sensor has a deviation to the average room temperature. Position the room sensors are appr. 1,5m above the finished floors.

Wireless-Gateway

The wireless room sensors are for surface mounted installation. Therefore always a wireless gateway sensor is necessary, which is connected to the zone module via a modbus cable. The other wire-less room sensors communicate with the wireless gateway sensor.

During mounting of the room sensor connect first the mounting plate with screws and anchor at the wall. Therefore make sure that the orientation („UP“) of the mounting plate is correct, then insert the batteries (2x AA) and mount the room sensor on the mounting plate.

Navigator Pro 2.0 - Control uni t with touch display

With the Navigator Pro 2.0 a control of the heating system via touchdisplay is possible. For communication a bus connection from the Navi-gator Pro 2.0 to the zone module and an Ethernet connection to a router, switch or the heat pump is necessary. It is possible to use the Navigator Pro 2.0 as room sensor for temperature and humidity, the sensor is inside the device.

Before mounting a modbus cable and a Ethernet cable must be laid to the desired position in the room resp. to the socket cavity.

Raumsensor

NAVIGATOR® Pro 2.0 Touch display

Temperature sensor

152

1

2

3

4

5

6

7

8

9

10

11




Heat pump manual

Co

ntr

ol

7.4. Smar t Web - remote control/remote obser vat ion/remote maintainance

myIDM- connect ion of the heatpump with the internet

With the Smartphone App for IDM Navigator controller, heatpumps which are connected with the internet, can be operated and monitored by smartphone.

Therefor is in addition to an internet connec-tion, the download of the Apps from the App Store respectively Play Store a registration at www.myidm.at.

The integration of the heat pump into the network occured over the socket LAN X33 on the Naviga-tor main board by a network cable. This cable must be supplied on site.

To allow an access to the heat pump via the Navigator Apps for Smartphones, the local IP, the subnetmask and the standardgateway must be registered in the Navigator controller or with DHCP directly transfered to the heat pump.

myIDMComplete

By closing a maintenance contract with the corre-sponding service technician the full functionality can be used. Then the service partner gets notice/errors via sms or email.

153

1

2

3

4

5

6

7

8

9

10

11


(C) IDM ENERGIESYSTEME GMBHheat pump manual

IDM

-Hy

gie

nik

Fresh water technology

The IDM Hygienik is a water heating unit based on fresh water technology.

The heating water inside of the buffer tank is heated by an external heating appliance (heat pump, biomass, oil, gas) on demand. The water is heated in a flow path inside of a large scale countercurrent plate heat exchanger which is heated by the heat pump‘s primary circuit.

1...speed control UVR 61-3 HEP (accessory)2...A-Label pump3...Plate heat exchanger4...flow switch5...flange for solar heat exchanger

Based on the principle of instant hot water deli-vered on demand, bacteria development is avo-ided. Two hose connections and a shut-off valve are supplied for simple de-scaling.

The Hygienik is available in two versions:

– With separation or buffer plate (the upper area serves for domestic water heating, the lower area serves as a storage or buffer tank) – Without a separation (buffer) plate (for

domestic hot water or for use as a storage tank)

If desired, the buffer tank can be pre-installed with a separation plate for maintaining temperature levels especially combined with the TERRA-HGL heat pump.

1

2

3

4

5

Freshhot water

Cold waterHeating

Fig.: Heating water with the Hygienik

154

8. IDM HYGIENIK

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

There are hot water stations available with the following drawing capacities:

– 25 litre/min – 35 litre/min – 50 litre/min – 70 litre/min

„Single drawing amount“

This is the total amount of hot water that can be drawn at one time at a temperature of 45°C from the Hygienik tank if the whole tank is heated to a temperature of 60°C down to the bottom without re-heating.

„NL“

According to DIN 4708, „NL“ refers to the performance coefficient for how many standard-apartments (according to DIN 4708, part 2) can be supplied under standardised conditions with the Hygienik.

„Hot water demand“

Hot water demand should be determined according to DIN 4708, part 2 or according to the „Sander Method“. Based on these, the appropriately sized Hygienik should be selected from the following table:

Water quality requirements hot water station

critical values and hints Page 28

Dimensioning hint

The Hygienik is available in various combina-tions depending on the size of the buffer tank and plate heat exchanger. The following guideli-nes should be noted:

„Buffer size“

Depending on requirements, several tanks can be combined.

„Drawing capacity“ of the plate heat exchanger

The drawing capacity is defined as maximum quantity of water that can be heated from 10°C up to 50°C by the plate heat exchanger at a sto-rage temperature of 55°C.

The choice of correctly sized plate heat ex-changer depends on the number of apartments and their sanitary equipment. Dimensions are in accordance with DIN 4708, part 2.

Capacity Intended purpose

500 litre for a single family home, eventually with solar for heating hot water

825 litre for a dual family house, or

920 litre

for solar system with partial solar-driven room heating, orfor a wood heating plant with a single family house

1.500 litre for multiple family houses

2.000 litre for solar and biomass heating plants with higher storage capacities

With the analyses of the ground-water the testing institute should be informed to test the solids which are important for the usa-ge of heat exchangers

155

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Instal lat ion s i te

The Hygienik tank should be installed in a frost-proof room by a certified company. Regulations, directives and standards concerning heat pipes and installations for drinkable water have to be considered.For easy access to the connectors, at least 50 cm should be kept free to the front and on one side (see illustration). The following table inclu-des further details about different sizes of buffer tanks

Hot water circulation

If longer pipe is required for hot water, a circu-lation pump is necessary to keep up the water temperature so that hot water is instantly availa-ble. According to DVGW sheet, no. 551, a hot water circulation pipe to protect against legio-nella is prescribed if the pipe‘s capacity is larger than 3 litres.

Higher c irculat ion temperatures (with heat pump faci l i t ies)

According to DVGW sheet no. 551, the tempera-tures of the hot water in the circulation pipe should be periodically increased up to 60°C if the pipe‘s capacity is larger than 3 litres. There are two ways to achieve this:

a) Installing trace heating around the hot water pipe thus making circulation pipes and pump needless.

b) Heating the circulating water with a continuous-fl ow water heater (activated by an automatic timer and thermostat).

T

cold water

electricalheating

Timer clock

Circulation pump

A> 500 mm

Fig.: Hygienik tank - dimensions for installation

Storage capacity litres Diameter A

500 l 850 mm

825 l and 1000 l 1000 mm

1500 l 1150 mm

2000 l 1300 mm

Positioning the hot water sta-tions decentralised and near the water drawing units (eg. in the apartments) rduces the contents of the water pipe to less than 3 litres.

156

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

HygienikTechdata

300/25 500/25 500/35 825/25 825/35 1000/25 1000/35

Storage capacity Liter 300 500 500 825 825 920 920

Size (inc insulation) mm 1800x600x866

Ø850x1850

Ø850x1850

Ø1000x1950

Ø1000x1950

Ø1000x2150

Ø1000x2150

Tank diameter mm 600 Ø650 Ø650 Ø790 Ø790 Ø790 Ø790

Topple measure mm 1750 1800 1800 1910 1910 2080 2080

Weight kg 171 100 105 115 120 125 130

Max single draw of hot water at 45°C*

Liter 200 480 480 820 820 900 900

Drawing capaciy lt./min

25 25 35 25 35 25 35

NL at 52°C storage temperature

1 3 5 4 7 5 8


1 4 6 5 8 6 10


2 5 8 6 10 8 12

Max no apartments** 2 2 3 4 7 6 10

Max no hotel rooms** - - - - - 5 8

Max no showers in sport facilities

- - - - - 4 6

* if the whole tank is pre-heated to 60°C!** at a storage temperature of 70°C

Pressure drop drinking water side: approx 0,3 bar

Max operating pressure:

- heating water side: 4 bar- hot water side: 6 bar

Max operating temperature: 90°C

8.1. Hygienik

157

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

HygienikTechdata

1000/50 1500/25 1500/35 1500/50 1500/70

Storage capacity Liter 920 1500 1500 1500 1500

Size (inc insulation) mm Ø1000x2150

Ø1150x2350

Ø1150x2350

Ø1150x2350

Ø1150x2350

Tank diameter mm Ø790 Ø950 Ø950 Ø950 Ø950

Topple measure mm 2080 2320 2320 2320 2320

Weight kg 135 160 165 170 175


Liter 900 1400 1400 1400 1400


50 25 35 50 70


12 5 10 13 15


15 6 12 15 20


18 8 15 20 30

Max no apartments** 18 6 12 20 30

Max no hotel rooms** 15 6 10 15 25


10 5 7 12 18

References to apartments, hotel rooms and sport facilities are for guideline purposes only. For exact sizing purposes, you should contact your heating designer. Guidelines have been drawn up on the assumption that:

Apartments:Each apartment has a bath

Drawing amount per tap: 10 l/min at 45°C

Factor for simultaneously drawing from multiple taps based on Recknagl-Sprenger handbook

Hotel rooms:50% rooms have bath; 50% have showers

Drawing amount per bath -10 l/min at 45°C; drawing amount per shower - 8 l/min at 42°C

Factor for simultaneously drawing from multiple taps: 1,5 times recommended in Recknagl-Sprenger handbook for domestic buildings

Sport facilities:Drawing volume per shower - 8 l/min at 42°CFactor for simultaneity - 0.9

158

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

HygienikTechdata

2000/25 2000/35 2000/50 2000/70

Storage capacity Liter 2000 2000 2000 2000

Size (inc insulation) mm Ø1300x2450 Ø1300x2450 Ø1300x2450 Ø1300x2450

Tank diameter mm Ø1100 Ø1100 Ø1100 Ø1100

Topple measure mm 2440 2440 2440 2440

Weight kg 200 205 210 215


Liter 1800 1800 1800 1800


25 35 50 70


5 9 13 15


6 12 15 20


8 15 20 30

Max no apartments** 7 14 22 33

Max no hotel rooms** 6 10 18 28


5 7 12 18

* if the whole tank is pre-heated to 60°C!** at a storage temperature of 70°C

In large buidling, storage capacity can be increased by additional buffer tanks. If greater drawing capacity is required, multiple Hygieniks can be used.

Freshhot water

Cold water

TERRA

Fig.: Cascading multiple Hygieniks

159

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Hygienik 300l

17

0

40

0

13

05

12

40

12

701

73

0

598

17

71

500

20

50

20

50

13

51

45

0

78

0

17

09

00

3

1

4

8

5 2

9

6

7

Pos. connection Dimension

1 Hot water station forward flow R 1“ IG

2 Hot water station return flow R 1“ IG

3 Sleeve for circulation lance R 1“ IG

4 Forward flow heat pump R 1“ IG

5 Return flow heat pump/bivalence (Solar,...), connection for the expansion tank R 1“ IG

6 Forward flow bivalence (Solar,...) R 1“ AG

7 Return flow heat pump/bivalence (Solar,...) R 1“ AG

8 Sleeve for temperature sensor di=15mm

9 Vent cock R 1/2“ IG

160

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

245

35

1720

800

650

1565

475

680

880

1550

475

210

680

1545

280

50

600

500

210

1550

290

550

280

12

11

10

8

1[O]

4[O]

5[V]

3[V]

2[V]

9[V]

16[V]

7[V]

613[O]

14[O]

15[O]

Hygienik 500 with/without layer -separat ion plate



2 Sleeve R 1 ½“ IG

3 Sleeve for electr. immersion heater R 2“ IG

4 Hot water station reverse flow R 1“ AG

5 Heating reverse flow R 1“ IG

6 Air bleed valve R ½“ IG

7 Sleeve for HW circulation system R 1“ IG

8 Immersion sleeve for temp. sensor di=12mm


9 Heat generator forward flow R 1 ½“ IG



12 Filling and emptying valve R ½“ IG

13 HGL line forward flow R 1 ½“ IG

14 Heat pump forward flow R 1 ½“ IG

15 Heat pump reverse flow R 1 ½“ IG

16 Sleeve for electr. immersion heater R 2“ IG

[V] Sleeve closed ex factory [O] Sleeve open ex factory

161

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

35

245

320

250

1150

850

350

150

790

1565

250

500

70085

0

1400

480

780 92

011

25

650

1590

280

70

1200

1011

1[O]

4[O]

17[V]

16[V]

19[V]

7[V]

613[O]

1780

- H

ygie

nik

1000

l16

30 -

Hyg

ieni

k 82

5l

1780

- H

ygie

nik

1000

l16

30 -

Hyg

ieni

k 82

5l

2035

- H

ygie

nik

1000

l18

35 -

Hyg

ieni

k 82

5l

14[O]

15[O]

18[V]

9

12

8

2[V]

5[V]

3[V]



2 Electr. immersion heater(hot water) R 2“ IG

3 Electr. immersion heater (heating) R 2“ IG

4 Hot water station reverse flow R 1“ AG

5 Heating reverse flow R 1 ½“ IG


7 Sleeve for HW circulation system R 1“ IG







13 HGL line forward flow R 1 ½“ IG


15 Heat pump reverse flow R 1 ½“ IG

16 Heating forward flow R 1 ½“ IG



19 Electr. immersion heater R 2“ IG


Hygienik800 and 1000 with/without layer -separat ion plate

162

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Maße A B C D E F G H I J K

Hygienik 1500 2220 1600 1180 950 300 305 1270 1700 1900 1180 300

Hygienik 2000 2300 1700 1400 1045 400 300 1270 1800 1850 1400 400


Hygienik 1500 and 2000 with/without layer -separat ion plate


9 *Immersion sleeve for temp. sensor R ½“ IG



12 Hot water station reverse flow R 1 ¼“ IG


14 HGL line forward flow R 2“ IG


16 Heat pump reverse flow R 2“ IG



1 Sleeve for immersion heater (water) R 2“ IG

2 Heating forward flow R 1 ½“ IG

3 Sleeve for immersion heater R 2“ IG

4 Heating reverse flow R 2“ IG


6 HW circulation system R 1“ IG

7 *Immersion sleeve for thermometer R ½“ IG

8 Hot water station forward flow R 1 ¼“ AG

*Immersion sleve di = 12mm

163

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Hot water c irculat ion

In the case of long hot water lines or larger sys-tems, a hot water circulation is necessary so that the hot water line is always kept warm and hot water is always available during tapping.

A hot water circulation is also stipulated in ac-cordance with DVGW Worksheet No. 551 for protection against Legionella development in the pipe with line contents of more than 3 liters.

The Navigator control from IDM has got a special hot water circulation activation:

With the Navigator controller it´s possible to con-trol the circulation pump, if the digital output on the main board is not needed for sum malfunction.

The circulation works in two modes:

1. During an active time program, the circula-tion pump operates with the adjusted run time (FW041) and pause time (FW042).

2. Outside the time program, the circulation pump operates, if on the flow switch (fresh water line) a flow > 1sec. and < 3sec. for a run time is detected (FW041). After this, the circulation pump will be blocked for the period of the pause time (FW042).

Hot water c irculat ion for a breath- respon-sive c irculat ion pump operat ion

If a larger capacity for the hot water circulation is rapidly required, the circulation line in front of the plate exchanger is integrated in the cold water line. However, in order to prevent the storage vessel from being completely mixed through the small heat dissipation at the same time, the circu-lation pump may only be switched on as required and must not operate permanently.

164

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Hot water c irculat ion for smal ler hotwater networks

e.g. for one or two-family residences

A circulation exchanger lance is screwed (R 1“), into the Hygienik storage vessel onto which the circulation line is connected.

In this way, the heat for the hot water circulation is gently removed from the storage vessel without thelatter being mixed completely.

Transfer capacity:approx. 1 kW at 60 °C storage temperature

Hot water c irculat ion for large hot water networks

In the case of large systems, the hot water net-work must permanently be kept at the temperature and circulated through. However, the capacity of the plate heat exchanger and the primary pump is much too big for the circulation line, and the storage vessel would always be mixed through. Here we recommend providing your own small plate heat exchanger with an pump in the upper storage area for the circulation.

165

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Hot water c irculat ion with higher c irculat i -on temperatures

In case of long hot water lines or bigger systems, a hot water circulation line is necessary, thereby the hot water line always keeped warm and in case of taping immediately warm water is required. According to DVGW Worksheet No. 551, to pro-tect against legionella in the pipes, it´s necessary to use a hot water circulation when the volume of the pipes are higher then 3 liter.

The necessary temperature can be reached by reheating with a small electrical flow heater (con-trolled via a clock timer and a thermostat)..

T

hot water

cold water

electricalheating

Timer clock

Circulation pump

166

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

8.2. Heat ing buf fer tank

General

Irregularly drawings result in irregularly running times of the heatpump, as cause of this the seasonal performance factor goes down, buffer tanks counteract this. buffer tanks decouple the circulatory between the tanks and the heating circuits. With that you guarantee a balanced working and enable so an increase of the seasonal performance factor.

Connect ion dimensions

Descr ipt ion

– Max. operating pressure: 4 bar – Max. Temperature: 90°C

Heating buf fer tank 1000 l

When using the reservoirs as cold reservoirs, the soft foam insulation is not suitable! The reservoirs must be insulated using suitable cold insulation by the customer in this case!

1

5

2

3

150

4

790

650

250 45

010

5014

0015

65 1780

1000

760

1270

1780 20

35

250

35


1 vent cock 1/2“

2 immersion sleeve for sensors (3x) di=12mm

3 Thermometer 1/2“

4 Muffl e (9x) 2“

5 drain valve 1/2“

167

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Heating buf fer tank 1500l

2

5

3

4

1

5

7

6

6

950

1100

850

300

150

1520 17

0019

50

850

300

1000

1400

1950

2255

2220

Pos. Connection Dimension

1 vent cock 1/2“

2 Muffl e (6x) 2 1/2“

3 immersion sleeve for sensors (3x) 1/2“


5 Muffl e (2x) 1 1/2“

6 Muffl e (2x) 2“


Meassurements in mm. All muffles are conducted with inside thread.

168

1

2

3

4

5

6

7

8

9

10

11



8. IDM HYGIENIK

heat pump manual

IDM

-Hy

gie

nik

Heating buf fer tank 2000l

2

3

4

1

5

6

150 35

0

1100

1000

5

400

1150

1700 19

00 2000

300

1000

2000 23

40

2300

Pos. Connection Dimension

1 vent cock 1/2“

2 Muffl e (6x) 2 1/2“


4 immersion sleeve for sensors (3x) 1/2“

5 Muffl e (2x) 2“


Meassurements in mm. All muffles are conducted with inside thread.

169

1

2

3

4

5

6

7

8

9

10

11


heat pump manual

Co

mm

ission

ing

9. COMMISSIONING


9.1.Requirements for the installation location

Both standard prEN378-3:2007(D) and BGR500, part2, chapter 2.35 apply to the plant room re-quirements.

The following points have to be considered:

9.2. EMC - electromagnetic compatibility

Power supplying mains and sensor or databus wires have to be installed separately. A miminum distance of 2 cm has to be observed. In case of using cable ducts, a separating-bar has to be considered.

If necessary, sensors can be extended with a shielded wire. The shield has to be grounded in the control panel, and non-corrosive clean con-tacts have to be ensured. Ideally, the shielding is soldered.

The heating-control‘s power supply (heat pump panel, EVA solar panel) has to be an independent power circuit. No other device (eg. fluorescent tube or any other jamming source) must be con-nected.

The outdoor sensor should not be mounted in the vicinity of transmitting or receiving devices (eg. garage door opener, amateur radio, radio-controlled burglar systems).

! All TERRA (HGL) heat pumps should be installed in a frost-proof room by an IDM-trained installer.

! In case of a fl oating fl oor screed the screed and the sound damping around the heat-pump have to be omitted.

! Room temperature should be between 5 and 35°C.

! The plant room should be kept clean. It has to be ensured that neither dirt, dust nor other pollutants can get into the plant room.

! Heat pumps should not be installed in wet rooms or in potentially dust or explosion-endangered rooms.

! The plant room must be free from aggressive gases. A complying ventilation has to be provided.

! Gas from refrigerants in plant rooms must not escape into vicinal rooms, stair rooms, courtyards, walks or into the drainage system of the building. The gas has to be channelled off safely.

! In case of danger, the plant room has to be evacuated immediately.

! For powering off the cooling facility, a remote power-off switch has to be installed nearby the door of the plant room.

! In case a natural ventilation is not possible, a mechanical ventilation has to be provided. A mechanical ventilation has to be equipped with an independent emergency control outside of the machine room near the door.

170

9. COMMISSIONING

1

2

3

4

5

6

7

8

9

10

11



9. COMMISSIONING

heat pump manual

Co

mm

issi

on

ing

9.3. Heating water quality

For filling heating systems, a number of guidelines should be adhered to, including the following:

– European standard EN 12828 – ÖNORM H 5195 – VDI Guideline No 2034-1

Special attention should be payed to water hard-ness. 1° dH correlates in practise with separated 17 mg/l. In a heating system with a capacity of approximately 1.500 litre water (buffer tank), this results in more than 20°dH or 510 gramm. This is more than 0,5 kg scale deposit.

As lime sets easiest at the hottest and most strait points, heat exchangers for solar systems and other devices are mostly affected. Moreover, heat exchangers for heating water (especially internal firebox boilers and solar systems) and the hot gas exchanger in the TERRA heat pump can very easily calcify if the hardness of the heating water is high.

To avoid damage from calcification, the heating water quality has to be improved (softening, desalting) if the hardness of the water is more than 14°dH or if the concentration of calcium-hydrogen-carbonate is more than 2,5 mol/m3.

Permeation of oxygen into the heating system should be avoided. In case of diffusion-leaking plastic pipes inside of floor heatings or in case of open heating systems, corrosion can occur on steel components when using steel pipes, radia-tors or buffer tanks.

Corrosive substances can gather in heat ex-changers and cause power loss or failure. There-fore, open heating systems or steel pipe combined with non-diffusion proofed plastic pipe for floor heatings should be avoided.

It should be ensured that the pH-value of the hea-ting water is between 8 and 9,5.

171

1

2

3

4

5

6

7

8

9

10

11



9. COMMISSIONING

heat pump manual

Co

mm

ission

ing

9.4. Installation of air and dirt separator

As heating water quality does not always conform to standards, limescale (if the hardness of filled water is too high) or rosty mud (if pH-value is too low and oxygen concentration is too high) can occur in parts of the system.In order to avoid deposits and occlusions in the heat pump, the following aspects should be con-sidered

9.5 Tips for s tar tup

! If the overall hardness of the fi lled water is more than 14°dH, it should be softened. The pH-value should be between 8 and 9,5.

! An air separator should be installed into the fl ow pipe.

! A suitable mud separator should be installed into the heat pump‘s return pipe.

! Use of oxygen leak-proofed pipe for fl oor heatings should be ensured.

1. Prior to heat pump activa-tion by an IDM certifi ed customer service, full sys-tem and control briefi ng should be conducted.

2. The briefi ng of the comple-te heating system (dimensi-oning) has to be done by the responsible plumber.

3. The customer should take resonsability for obtaining a detailed explanation of the heating control from the end user manual and reference handbook.

4. In direct evaporation sys-tems, the service techni-cian should be trained in refrigeration technologies and must have undertaken an appropriate IDM trai-ning.

172

1

2

3

4

5

6

7

8

9

10

11



9. COMMISSIONING

heat pump manual

Co

mm

issi

on

ing

9.6. Scope of work at s tar t up

In the commissioning costs included:

Check of the system (hydraulic pipework and electrical connection of the IDM components, check of the series connected fuses, system pressure, expansion vessel), checking and adjusting of the expansion valve. Meassure-ments: evaporation, condensation, suction gas, hot gas temperature, line voltage, current consumption, heat source flow, inlet and outlet temperature heating side. Meassuring of the brine inlet and outlet, groundwater inlet and outlet, air inlet and outlet temperature depending on the type of the heat pump.

Hint for statutory inspection of the heat pump acc. to EU- guideline 842/2006, Checking and setting of the control, checking the controler outlets and the connected equipment via relay test function, instruction for the operator, creation of a commissioning log and documentation for the completion message

Additional for brine heat pumps: measurement of the antifreeze concentration in the brine circuit,checking system pressure and expansion vessel on brine side.

Additional for groundwater heat pumps: Adjusting of the groundwater flow switch

Additional for air split heat pumps TERRACheck air inlet and outlet(channels, hoses), condensation run off and if appliceable run off heating

Additional for air heat pumps TERRA ML:soldering the refrigerant connection pipes (not the installation) ,leakage test, evacuating the heat pump, Check air inlet and outlet, ondensation run off and if appliceable run off heating

173

1

2

3

4

5

6

7

8

9

10

11



9. COMMISSIONING

heat pump manual

Co

mm

ission

ing

Not included in the scope of services for commissioning :

are steps such as filling and/or venting of heating circuits, filling and/or venting of brine circuits with antifreeze mixture (brine plants, solar plants), fitting of temperature sensors, laying and/or clamping of electrical or sensor lines, etc. If an additional call-out is required for the commissioning work (e.g. because the system is not complete or the customer is not present for instruction) this will also be billed. A commissioning request form is available on our website www.idm-energie.at as a download.

Not included services in the scope for commissioning are billed based on effort. Services corresponding to higher level controls (e.g. building control systems) are not inclued in the scope of commissioning and billed based on effort.For the testing of this functions the attendence of the responsible technician is mandatory.

With the commissioning of the heat pump system IDM doesnt take on responsibility for a correct planning, dimensioning and completion of the whole system.

174

1

2

3

4

5

6

7

8

9

10

11


(C) IDM ENERGIESYSTEME GMBH heat pump manual

Ma

inte

na

nce

10.3. Maintenance check l is t

Following points have to be observed

– check clamps on the electric – Is soft starter set to starting current – minimum stop and run time of compressor set

to 8-10 minutes – pressure in heating circuit (expansion vessel

filled) – pressure in brine circuit (expansion vessel

filled) – meassure Antifreeze concentration – check heating water quality – Das Verhältnis operating hours/turn on impulse

should be around 1:1 to 1:3 – control of heal system (leaks)

– check condensation run off – check error protokoll on the heat pump control

10.1. Maintenance periods

One and three years after initial activation, maintenance should be carried out by a service technician. The signed work record preserves any claims under the system guarantee.

Maintenance work is carried out according to to IDM‘s maintenance plan and EN 378-4:2003.

According to EU-standard 842/2006, an annual check for heat pumps with more than 3 kg refrige-rant is prescribed.

10.2. Ser vice and maintenance of the TERRA IL Complete, TERRA CL, TERRA AL Twin and TERRA ML Complete

At the beginning of the heating season the safety-guards have to be removed both on the side of the air intake and outlet (TERRA IL and CL). Leafs and vermins have to be cleared away and the drainage has to be examined for blockages

Ensure fi n grid is not damaged during cleaning!

An industrial vacuum cleaner may be used for cleaning.

175

10. MAINTENANCE

1

2

3

4

5

6

7

8

9

10

11



10. WARTUNG

heat pump manual

Ma

inte

na

nce

The table below does not include solutions for control panels that have been incorrectly pro-grammed.

To avoid damage to components, the heat pump is equipped with several protective functions. If the heat pump is not working properly, please refer to the table below:

? Is an error message being shown on the display?

Yes|IIIII||V

No

Possible causes Measure

The minimum idle period to the next permitted heat pump start has not yet elapsed

• Wait 15 minutes.• Switch the unit off and on.

Heating mode: heating circuit minimum idle period not elapsed yet Wait 15 minutes.

domestic hot water mode: no time program set set time program

10.4 FAQs for Navigator -Control

Symptom cause remedy

Temperature values are not correct & fl uctuate signifi cantly

EMC infl uence (potential) on sensor lead

Check that the sensor leads are not parallel to the current-carrying leads

No display on control panel No voltage Check fuses and power supply (main control switch)

Check connection to control panel

Time is always wrong The battery in the control is not working

Change the battery

Contact your service technician.

The text is not displayed in the correct language

Incomplete language changeover

Reset by pressing the "F2“ or „ on/off button

176

1

2

3

4

5

6

7

8

9

10

11



10. WARTUNG

heat pump manual

Ma

inte

na

nce

?Is an error message being shown on the display?

Yes

No||||||||||||||||||||||||||||||||||||||IIIIIIIIIIIIIII||V

error cause remedy

Heat pump fl ow maximum temperature(Error 020)

Switch point is set too low Please contact your service technician.

Boiler temperature in the control is set too high

adjust heating curvePlease contact your service technician.

Flow rate too low meassure temperature difference, check pump

Sensor value is not correct Check sensor value (measure resistance).

gravity circulation caused by high temperature (solar , Feststoffkessel)

install a non-return valve

Heat pump fl ow minimum temperature(Error 021)

Switch point is set too high Please contact your service technician.

Sensor value is not correct Check sensor value (measure resistance).

heating buffer too cold heat up the buffer tank with an imersion heating or second heating system( via relaistest)

Low pressure error(Error 022/023)

Air in the brine circuit Ventilate the brine circuitNote: the expansion tank also has to be fi lled.

No or insuffi cient fl ow rate on the brine side

Check that the brine pump is working.Check that all shut-off values are open.Check antifreeze concentration. Check difference in the brine circuit.Please contact your service technician

Temperature of heat source too cold Check entry and exit temperature of heat source.

Is the fl ow rate correct?

Check if the fi lter is not dirty.

air evaporator freezed Please contact your service technician

air fan broken check electrial connections.Please contact your service technician

(Error 221/231) The low pressure switch shutted the heatpump down (<3x/24h)

second compressor - refrigerant circuitPlease contact your service technician

High pressure error(Error 024/025)

No or insuffi cient fl ow rate on the heating side

Check if the charge pump is working. Check if the circuit is not restricted (zone valves). Check the difference between the fl ow and return.Air in the heating system - ventilate and check the unit pressure on the heating side.

maximum temperature limit set to high Please contact your service technician.

Error 241/251) the high pressure switch shutted the heatpump down (<3x/24h).

second compressor - refrigerant circuit Please contact your service technician

Current monitoring(Error 026/27)

No or insuffi cient fl ow rate on the heat source side

Check that the heat source pump is working.Check that all shut-off valves are open.Check if the fi lter is not dirty

fl ow switch broken CheckPlease contact your service technician

177

1

2

3

4

5

6

7

8

9

10

11



10. WARTUNG

heat pump manual

Ma

inte

na

nce

...Fortsetzung „FAQs Navigator“No||||||||||||||||||||||||||||||||II|II||||ll||V

error cause remedy

Initial current limiter (Error 028/029)(Error 074/075) atTWIN

Meaning of the LED on the initial current limiter (number fl ashing):1. Overload2. Excess temperature3. Stage inverter4. Stage failure - motor not connected5. Stage asymmetry6. Short-circuited thyristor

Please contact your service technician or electrician.

Check fuses in fuse box.

Motor protection heat source pump Error 30/31)

pump broken Please contact your service technician.

pump dirty or stucked Please contact your service technician.

Maximum defrost time exceeded (Error 32)

defrost time set to low increase defrost time - Standard 15min.Please contact your service technician.

Condenser temperature below minimum (Error 33)

Insuffi cient fl ow rate control pump.

Heat reservoir too cold Please contact your service technician.

Fan error (Error 34) Fuse defective Change fuse.

Stage failure Please contact your service technician bzw. electrician.

Fan blocked Check if it runs smoothly.

E-heating element overheating (Error 036)

Insuffi cient fl ow rate Check fl ow rate.

Resistance measurement of heating element.

Check STB - manual

Loading pump(Error 37)

loading pump error contact check loading pump

Hotgas(Error 042/043)

Hot gas temperature to high/nearly reaching kondensation temperature

Please contact your service technician.

Dew-point monitor (Error 050)

fl ow temperature too low Increase fl ow temperature.

178

1

2

3

4

5

6

7

8

9

10

11



10. WARTUNG

heat pump manual

Ma

inte

na

nce

No||||||||||||||||||||||||||||||||||||||||||||I||V

error cause remedy

Heat source temperature (Error 060/061)

No or insuffi cient fl ow rate on the heat source side

Check that the brine pump is working.Check that all shut-off valves are open.Check antifreeze concentration.Check difference in the brine circuit.Please contact your service technician or heating installer.

Ground water temperature too cold

Check ground water entry and exit temperatureCheck fl ow rateCheck that the fi lter is not dirty.

minimum temperature to high Please contact your service technician

sensor value wrong Check sensor value (measure resistance)try another sensor

Limited use, heat pump Change to alternative operation.

Winding protection (Error 62/63) Limited use, heat pump Change to alternative operation. Please contact your service technician.

compressor overloaded let compressor cool downPlease contact your service technician.

EIB/KNX(Error 070)

No EIB/KNX installed or wrong programmed.

Connect EIB/KNX with connection cable RJ45 with navigator main plate Program the EIB/KNX with ETS Software(ETS project on our homepage)

soft starter(Error 074/75)

soft starter failure (LED fl ashes)

Collector max Temperature (Error 280)

the collector max temp exceeded (170°C)

Error will be reseted after temp undercut

Hygenic max temperature (Error 281)

the hygenic max temp exceeded (80°C)


Buffer max temperature (Error 282) the buffer max temp exceeded (80°C)


heating source max temperature (Error 283)

heating source max temp exceeded (20°C)


Solar modul not installed(Error 284)

Solar settings confi gurated. CAN Bus connection doesnt work

CAN Bus Kabel (Steckverbindung) kontrollieren ggf. CAN Bus Kabel tauschen.

operation limit reached (TERRA CL) (Error 200)

usage out of operation limits alternative operation

sensor

(Error 100-199)

Sensor disrupted or defective Check resistance value and replace sensor if necessaryPlease contact your service technician

the messages 997 and 999 are event messages which are displayed in the failure log.

Dont mix it up with Error Message !!!

997 ... reboot

999 ... failure receipted

179

1

2

3

4

5

6

7

8

9

10

11


(C) IDM ENERGIESYSTEME GMBHTechnical handbook

Glo

ssary

Dimension drawing TERRA SW HGL 8 - 17 Complete HGL & TERRA SW Twin 20-42 HGL

On the rear of the heat pump is a sticker with the connection description!

TERRA SW 20-26 Twin HGL TERRA SW 35-42 Twin HGLTERRA SW 26 u. 42 Twin HGL P

Legend:1 Main current connection2 Cable bushing (3x)3 HGL-Connection4 Heating circuit inlet fl ow5 Heating circuit return fl ow6 Brine outlet7 Brine inlet

76

9

213

,5

519

1

61,5

12,

5 207 244

301

19,6

110

0,5

85

150 150

12,

5 244

110

0,5

85

150 150

19,6

301

72

6 2

56,5

207

161

,5

519

112

2,5 1

323

12,

5

760

1

2

4

5

6

7

3

3

1

2

4

7

6

5

109

5,5

60

61

7,5

203 1

16

230

93

637

,5

760

20

1132

0

620

TERRA SW 8-17 C HGL:

TERRA SW Twin 20-42 HGL:

Legend:1 Main current connection2 Cable bushing (3x)3 HGL-Connection4 Heating circuit inlet fl ow5 Heating circuit return fl ow6 Brine outlet7 Brine inlet

180

11. GLOSSARY

1

2

3

4

5

6

7

8

9

10

11



11. GLOSSARY

Technical handbook

Glo

ssa

ry

Dimension drawing TERRA SW 6-17 & TERRA SW Twin 20-42

TERRA SW 6-17 :


TERRA SW 20-26 Twin

1

2

4

3 5

6

TERRA SW 35-42 Twin

476

1

92

203 132,5

157

4

76

620

1333

760

1

6

5

4

3

2

112

2,5 1

323

12,

5

760

TERRA SW Twin 20-42:

Legend:1 Main current connection2 Cable bushing (3x)3 Heating circuit inlet fl ow4 Heating circuit return fl ow5 Brine outlet6 Brine inlet


181

1

2

3

4

5

6

7

8

9

10

11


(C) IDM ENERGIESYSTEME GMBHTechnical handbook

Glo

ssary

85

150 150

476

519

3

34,5

487

,5

12,

5

366 244

110

0,5

85

150 150

444

,5

12,

5

313

110

0,5

244

334

,5

519

519

1

2

4

5

6

3

112

2,5 1

323

12,

5

760

760

TERRA SW 18 H TERRA SW 28 H

760

Dimension drawing TERRA SW 18H und 28H



182

1

2

3

4

5

6

7

8

9

10

11



11. GLOSSARY

Technical handbook

Glo

ssa

ry

182

9

910

119

4 5

70

60 625

75,5

975

8

05

713

780

26

Ausblas

Draufsicht

Front

Ansaug

Dimension drawing TERRA IL 7-11 Complete (HGL)

183



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

160

100

7x9

0 =

630

90 1

2 345678

1 2 345678

1 2 345678

Cable ducts TERRA IL Complete HGL

1 HGL-flow for fresh water heating (flex. connection hose)2 Heatpump flow (flex. connection hose)3 HGL-return (only for HGL-usage in cooling mode)4 Condensate and overpressure overflow5 Heat pump return only in cooling mode (flex. connection hose)6 Heat pump return (flex. connection hose)7 Main current8 Sensor and control lines

Cable ducts TERRA IL Complete

1 Flow fresh water heating (flex. connection hose)2 Heatpump flow (flex. connection hose)3 not used

4 Condensate and overpressure overflow5 Heat pump return only in cooling mode (flex. connection hose)6 Heat pump return (flex. connection hose)7 Main current8 Sensor and control lines

184



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

TERRA CL Twin HGLTyp b h t a d e f g i j k l m20 1200 1735 880 740 965 820 1135 675 540 400 260 125 12530 1300 1935 980 740 1165 920 1235 675 540 400 260 125 125

all measures in [mm]

d

fb

ha

lk

ji g a

d

et

m

*

Dimension drawing TERRA CL Twin 20 HGL & 30

Conduit bushings in TERRA CL HGL:

1 ... HGL flow (flex. connection hose)2 ... Heating flow (flex. connection hose)3 ... Sensor and control lines4 ... Heating return5 ... Condensation run-off

185



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

600

330

370

25

175 175

950

600

180

0

ca.7

5

180

0 19

,5

865

LeftFront

Indoor uni t TERRA ML 6-8 Complete Outdoor uni t TERRA ML 6-8 Complete

600

865

Above Above

186



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

600

865

Above

Indoor uni t TERRA ML 8-13 & 11-18 Complete

Outdoor uni t TERRA ML 8-13 & 11-18 Complete (HGL)

Indoor uni t TERRA ML 8-13 & 11-18 Complete (HGL)

600

180

0

ca.7

5

180

0 19

,5

865

LeftFront

Side view

Above

572

1237

140

37

10

5139

041

1

350

572

30

8

35

0

1237

127 73

73

330

711

Front Left Rechts

Above

Front

1005

960

1433

400

616

1416

538

187



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

1950

(1923)

925

(897)

1199

1950

(1923)

925

(897)

1399

600

560

180

TERRA AL 24 and 32 Twin

control cabinet for AL 17 bis 32

TERRA AL 17 Twin

188



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

536

3272

143

9

895

back side

Front view Side view

TERRA AL 60 Max

600

560

180

control cabinet TERRA AL 60 Max

189



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

11.1. Safety heat exchanger for ground water heat pumps

A

B C

D

1

2

3

4

KFE tap

Intermediate circuit flow

Brine intermediate circuitGround watercircuit

Ground water flow

Ground water return flow

Immersion sleeve for ground water flowtemperature

Plug cock

Intermediate circuit pump

KFE tap Plug cock

Intermediate circuitreturn flow

Description:Copper soldered stainless steel heat exchanger as safety heat exchanger for groundwater systems.The hydraulic connection see following sketch.

The set consists of:

Copper soldered stainless steel heat exchangerArmafl ex InsulationWall holderConnection set for safety heat exchanger 1“ incl. pumpAll necessary connection fi ttings

Safety heat exchanger

Primary circuit Ground water

Secondary circuit Brine intermediate circuit = Antifreeze with 25% Polypropylenglykol

1

2

3

4

Primary circuit Secondary circuit

190



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

Safety heat exchanger TERRA SW 6-17

Dimension „A“ mm Dimension „B“ mm Dimension „C“ mm Dimension „D“ mm50 466 190 174

SW 6 SW 8 SW 10 SW 13 SW 17

Flow intermediate circuit m³/h 1,7 2,3 3,0 4,0 5,1

Pressure loss intermediate circuit kPa 8 7 10 18 17

Flow ground water side m³/h 1,6 2,1 2,8 3,8 4,7

Pressure loss ground water side kPa 8 6 10 18 17

Connection intermediate circuit 1“ 1“ 1“ 1“ 1“

Connection ground water side 1“ 1“ 1“ 1“ 1“

Safety heat exchanger TERRA SW 20-42 Twin HGL, 18 H u. 28 H

Item no. Dimension „A“ mm Dimension „B“ mm Dimension „C“ mm Dimension „D“ mm

191431 - 191432191422 - 191423191416, 191432

509250

466519466

190190190

174252174

SW 20 Twin

HGLSW 26 Twin

HGLSW 35 Twin

HGLSW 42 Twin

HGL SW 18 H SW 28 H

Flow intermediate circuit m³/h 6,3 7,8 10,6 12,4 5,4 8,0

Pressure loss intermediate circuitkPa 18 14 20 27 19 22

Flow ground water side m³/h 5,9 7,3 9,9 11,6 5,1 7,5

Pressure loss ground water side kPa 19 18 17 16 20 25

Connection intermediate circuit 6/4“ 6/4“ 2“ 2“ 1“ 6/4“

Connection ground water side 6/4“ 6/4“ 2“ 2“ 1“ 6/4“

191



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

11.2. Heat exchanger for cool ing

Dim. "A" [mm] 50 92

Dim. "B" [mm] 466 519

Dim. "C" [mm] 190 190

Dim. "D" [mm] 174 252

Connector 1/2 5/4" outer thread 2" outer thread

Connector 3/4 1" outer thread 2" outer thread

Dimensioning reference for boreholes: example brineBrine side (primary)

D

C

A

B

1

2

3

4

Cooling circuit (secondary)Medium Propylenglycol-

water mixture 30%Heating water

Inlet temperature (1)

+16°C

(3) Outlet temperature

+18°C

Outlet temperature (2)

+20°C

(4) Inlet temperature

+22°C

Transfer capacity

For brine oper. 16°C inlet temp. 6 kW 10 kW 14 kW 18 kW 22 kW 26 kW

Volume fl ow brine side l/h 1450 2500 3600 4700 5700 6500

Pressure drop brine side kPa 10 10 13 15 17 17

Volume fl ow heating side l/h 1350 2150 2900 4000 4700 5700

Pressure drop heating side kPa 7 7 9 10 11 10

For groundwater 15°C inlet temp. 7,5 kW 12 kW 16,5 kW 21 kW 28 kW 30 kW

Volume fl ow groundwater side l/h 1850 2950 4050 5150 6850 7350

Pressure drop groundwater side kPa 11 13 14 16 22 18

Volume fl ow heating side l/h 1600 2550 3550 4500 6000 6400

Pressure drop heating side kPa 10 11 12 13 16 12

For brine oper. 16°C inlet temp. 35 kW 50 kW 70 kW 95 kW 100 kW -

Volume fl ow brine side l/h 9000 12200 17000 21200 24400 -

Pressure drop brine side kPa 30 27 28 30 28 -

Volume fl ow heating side l/h 7500 9600 13400 18200 19200 -

Pressure drop heating side kPa 20 22 24 30 23 -

For groundwater 15°C inlet temp. 40 kW 60 kW 80 kW 100 kW 120 kW -

Volume fl ow groundwater side l/h 9800 12900 17200 21500 25800 -

Pressure drop groundwater side kPa 32 30 29 31 31 -

Volume fl ow heating side l/h 8600 11500 15300 19100 22900 -

Pressure drop heating side kPa 26 32 31 33 33 -

Delivery contents: copper-soldered stainless plate heat exchanger, insulated with Armaflex, incl. clamps for wall-mounting

192



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

11.3 Glossar y

A

Absorber

Absorbers are units for transferring solar energy to convector fluids inside of pipes. In practice absorbers are dark coloured plates that pass the heat energy on to the pipes on the rear side of the plate.

Air flow short-circuit

Air flow short-circuits occur when larger amounts of blown-out air get into the intake of the heat pump.

Airborne sound

Airborne sound are waves of energy that travel through the air.

B

Bivalent operation

Providing heat energy with two different heating appliances is called tandem/bivalent operation. Tandem/bivalent operation mode is the opposite of monovalent.

bivalence point

The bivalence point is, where the heat pump cant manage the heating load alone anymore.

The bivalence point is the p

Borehole

A borehole is a unit that is inserted vertically into the soil. The borehole serves for extraction of heat

from the soil. Boreholes work upon the fact that the soil‘s temperature is almost constant from a depth larger than 10 m.

Boundary temperature

The boundary temperature is a limit that serves as a reference size for lower deviations or over-ridings.

Brine

Brine is a mixture of water and an anti-freeze that is used as a heat carrier in heat pumps. The amount of the anti-freeze depends on the heat pump‘s source. Very low temperatures down to -10°C are possible with ground loop collectors. To avoid freezing of the evaporator, the anti-freeze has to be added in sufficient concentration.

C

CFC

CFC is the abbreviation for ChloroFluoroCarbon. These are climate-damaging gases that are banned because they harm the protecting ozone layer of the earth‘s atmosphere.

Circulation pipe; secondary return

Circulation pipes are part of sanitary facilities and provide circulation of heated water between a buffer tank and a tap.

Circulation enables supply of instant hot water. Circulation pipes ensures the avoidance of Legi-onella.

Clocking; short cycling

Clocking is the effect of to many startups and po-wer-downs of heat pumps. They lead to frequent changes of the operation state and influence the

193



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

efficiency and the lifetime of a heat pump.

Collector

A collector is a device for collecting energy.

Compressor

A compressor serves for compressing and circu-lating gases.

Condenser

A condenser is a device, which disposes the heat of vaporous refridgerants.Condensation is the process of a gas changing its aggregate state from gas to liquid.

Condensing temperature

The condensing temperature is the point where gases change to fluid state.

Condensation; condensation water

Condensation water arises from the condensation process and occurs when water dissolves in a gas (eg. air) due to a decrease of temperature or pressure.

Cooling capacity

The cooling capacity is the performance of a heat pump working in process-reversal operation mode. This is the performance that can be provi-ded for cooling a building.

COP

COP is the abbreviation of „Coefficient Of Perfor-mance“. COP describes the ratio of the provided heating power and the amount of electrical ener-gy that a heat pump consumes for providing that heating power. For heat pumps COP lies within the range of 3 to 6 and depends on the operating point of the heat pump.

„COP“ serves as a denotation in formulas as well.

D

Defrosting

Defrosting is the process that removes icing resul-ting from heat extraction in the form of condensa-tion water. Icing occurs in heat pumps at in the evaporator (eg. air to water heat pumps).

E

Efficiency

The efficiency reflects the ratio of gained energy (Pout = gain) and spent energy (Pin = effort).

Energy carrier

Energy carriers are substances that can provide energy. Basically, there are fossil and regenerati-ve energy carriers.

For instance, oil, gas and carbon are fossile substances. Water power, solar power, wind energy and terrestrial heat belong to the family of regenerative energy carriers.

Energy demand

The energy demand quantifies the amount of a requested power.

Concerning heat pumps, there has to be distingu-ished between:

– heating energy demand – energy demand for heating water – energy demand for special uses

194



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

EnEV

EnEV is the abbreviation of the german word „Ener-gieEinsparVerordnung“, a legal ordinance describing how to reduce consumption of energy for heating buildings. The EnEV is valid since 1. February 2002.

Enthalpy

The word enthalpy is derived from the greek word ‚enthalpein‘ (warming up). The enthalpy is a mea-sure for the energy of a thermodynamic system and represents the heat content of a energy carri-er. The symbol for enthalpy is ‚H‘ which stands for ‚heat‘. The unit for enthalpy is ‚Joule‘, J.

The specific enthalpy relates to special substances and their amount and has the unit kJ/kg.

EVR

EVR stands for the German expression „Elektroni-sche Verdampfungs Regelung“.

The EVR technology provides an improved align-ment of the refrigerant‘s flow through the ground loop and therefore results in better evaporation and in better COP.

Exhaust air

Exhaust air is the air conducted out of a room. Ventilation of exhaust air can be performed either through the ceiling or directly at the heat source.

Expansion tank

Fluids expand or shrink when they are heated or cooled. Expansion tanks absorb this growth or decrease in volume (eg. heating water).

Expansion valve

An expansion valve is able to control the speed and the pressure of a flowing substance. Larger openings give a slower flow rate and vice versa.

With heat pumps, expansion valves facilitate the drop of the pressure so that heat can be absorbed in the evaporator.

F

Filter

Filters are devices that can dissolve unwanted components.

In heat pumps, filters are used to protect pumps or ventilation systems from pollutants.

Floor heating

Floor heating is a system that heats over a larger area. Floor heating consists of loops of pipe laid in screed.

Floor heating provides a consistent heat. Because of its relatively low temperature it prevents air flows that might in their turn raise dust.

Flow temperature

The flow temperature is the temperature of a heat transporting medium that is channelled to a heat emitting system.

G

Geothermal probe

A geothermal probe is an element which is vertically installed in the ground, and extracts the heat from there. Probes are using the circumstnances that the ground temperature at a depth of about 10m is nearly constant.

195



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

Ground loop

A ground loop system consists of a series of pipe installed under the surface of the ground. Ground loops extract the soil‘s heat. Heat is transported by the brine which is a mixture of water and anti-freeze.

H

Heat carrier

Heat carriers transport heat inside of circuits from a location with higher thermal levels to locations with lower thermal levels.

Heat demand

The heat demand is the amount of energy requi-red to keep up the thermal level of a medium such as air or water.

In order to determine the heat demand for hea-ting rooms, the standard EN 12831 should be adhered to.

Heat pump

A heat pump is a system that extracts heating energy from earth, water or air and delivers this energy to a heat emitting system.

Heat source

A heat source is a medium that provides suffi cient thermal energy to enable heating.

Heating energy demand

The heating energy demand quantifies the amount of required heating power. The symbol is: Qg.

Heating power

Heating power is the amount of energy required to sustain the thermal level of a heating medium.

It therefore depends on the environmental tempe-rature which in turn has a decreasing temperature gradient from the heating element to the environ-ment. The use of appropriate insulation means that the slope of the temperature gradient can be kept low thus reducing the required heating power.

HGL, HGL technology

HGL is the abbreviation of „Heiß-Gas-Ladetech-nik“ or „Hot Gas Loading“ technology.

The basis for the usage of the HGL-principle is the fact that 15% of the evaporated refrigerant is available as hot gas. This gas is channelled to a second separate heat exchanger and is available for usage at higher temperatures.

High pressure switch

A high pressure switch sends a signal if a specified pressure is exceeded. The signal can subsequently be processed by a control.

I

Impact Sound

Impact sound is the sound which spreads in a solid state. this form of sound are energy pakets which spread in the solid state as osciallations or vibrations.Impact sound is experienced by humans at deep frequencies.( e.g. earth-quakes, vibrations and so on)

L

Lock waits; power blocks

Lock waits (power blocks) are time frames in which energy providers can disconnect the elec-trical supply.

196



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

Lock waits are the result of peak demands for energy.

Low pressure switch

A low pressure switch is a component that sends a signal when a specified pressure is underrun. The signal can subsequently be processed by a control.

Low temperature heating appliance

Low temperature heating systems emit heat at low temperatures. Such systems include wall, ceiling and underfloor heating systems.

Low temperature heating systems are optimally suited for heat pumps as high COPs can be achieved at very low flow temperatures. Energy savings of 2,5% per one degree of flow tempera-ture are possible.

M

Machine room

If the min size of the installation room is under-cutted, it has the be carried out as an engine room referring to EN 378. A machine room is fully enclosed rom or container with a mechanical ventilation, which is only accessable for authorized people and is used for the placement of parts or the whole cooling unit. The machine room can contain additional parts, if the requirements for the placement with the requirements for the safety of the cooling unit are compatible

Mechanical vibration

Mechanical vibrations are waves of energy that travel through solid objects in the form of waves or shocks.

Mechanical vibrations can be sensed by indivi-duals especially at low frequencies (eg. earth quakes, vibrations).

Minimum operation time

The minimum operation time is the minimal dura-tion a device operates.

Minimum idle time

The minimum idle time is the minimal duration a device does not operate.

Monoenergetic

Monoenergetic means that a heat pump is sup-ported by an electrical resistance in cases of peak power demands (i.e. submersion tube heater).

Monovalent

Monovalent means that heat pumps meet the an-nual heating and cooling demands alone.

N

„NL“

According to DIN 4708, „NL“ denotes the per-formance coefficient for how many standard-flats (according to DIN 4708, part 2) can be supplied under standardised conditions with the Hygienik.

Nominal outdoor temperature

Lowest mean-value of two days of the air tem-perature at a location that is reached or fallen below 10 times in 20 years (values see ÖNORM M7500, part 4). [Source: ÖNORM].

Symbol: tne

197



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

O

Overall energy demand

The overall energy demand is the sum of:

– heating energy demand – energy demand for heating water – energy demand for special uses

P

Plate heat exchanger

A plate heat exchanger consists of several stain-less plates that are soldered to a unit. Heat is transferred from one fluid (water) to the other (re-frigerant) by thermal transfer through the stainless steel plate without the fluids or gases coming into contact with each other. This happens according to the counter-flow principle.

Power blocks

Power blocks (lock waits) are time frames in which energy providers can disconnect the electrical supply.

Power blocks are the result of peak demands for energy.

Power consumption

Power consumption is the electrical power requi-red by a system for operation.

Pressure drop

Pressure drops are caused by friction of fluids or gases inside of pipe and fittings. The primary cause for friction is surface roughness through which these fluids or gases run.

Borehole pipe

A borehole pipe is a unit that is put vertically into the soil and serves for extracting heat from the soil.

R

Refrigeration capacity

Refrigerating capacity is heat flow taken from a heat source by the heat pump. Actual refrigerating capacity is the heating power less the electrical energy consumed by the heat pump.

Refrigeration medium, refrigerant

Refrigerant is used in the heat pump‘s cirular flow. It transfers heat from the heat source to the heating system.

It is a particular fluid that evaporates at very low temperatures, thus changing its aggregate state from liquid to gas. As a result of compression, the gas temperature increases. When the heat is extracted, the gas cools down which turns it back from gas to liquid state.

Return temperature

The return temperature is the temperature of the water that flows from the heat emitting system (eg. radiator) into the heating system (eg. heat pump, oil-fired boiler).

S

Scroll compressor

A scroll compressor is a device for compressing gases. Scroll compressors differ from piston com-pressors. The run more smoothly as they have no masses that cause vibrations.

A scroll compressor contains a circular helix which moves excentrically inside a stationery

198



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

helix. The space between where the two helixes meet becomes more narrow. This compresses and heats up the gas (refrigerant). The gas gets into the centre of the compression chamber from where it can finally escape under high pressure.

Seasonal performance factor (SPF)

The seasonal performance factor describes the ratio of the amount of the heating power submit-ted by the heat pump over a whole year and the amount of electrical energy consumed for provi-ding the heating power during that period.

The seasonal performance factor therefore reflects the rate of use of the heat pump equipment.

Sound

Sound is energy in the form of waves caused by changes of pressure and density.

Sound can occur as airborne sound or as mecha-nical vibration.

Sound pressure

„Sound pressure“ describes the pressure varia-tions that occur during transmission of acoustic signals through gases (usually air).

However, for the human eardrum the overall pres-sure is relevant which in its turn is the sum of the static air pressure and the sound pressure.

The physical symbol for sound pressure is „p“, the physical unit is „Pascal“ - abbreviation „Pa“.

Sound pressure level

The sound pressure level is defined by the ratio of a given sound pressure and a reference sound pressure. This pseudo-unit is expressed in „deci-bel“ - abbreviation „dB“.

Source temperature

The source temperature is the temperature of a medium that is used for heat extraction by a heat pump.

Spread angle

The spread angle is the temperature difference between inlet and return flow.

on the heating source side at brine/groundwater heatpump should the temperature spread angle be between 3k and 4k.on the heating side are 5k common.

Starting current

A starting current is the electrical current required for starting up a device. The starting current usually is much higher than the operating current. Its multiple energy is needed for putting a system into its proper operation state.

199



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

Standard Description

EN 15450 Design of heat pump heating systems

DIN 4708-1 Central heat-water-installation; terms and calculation-basis

DIN 4708-2 Central heat-water-installation; rules for the determination of the water-heat-demand in dwelling-houses

ÖNORM M 7755-2 Electrically driven heat pumps - special requirements for heat pumps with respect to the use of ground water, surface water or earth

VDI 4640 Thermal use of the underground - Ground source heat pump systems

EN 378-3 Refrigerating systems and heat pumps. Safety and environmental requirements. Part 3: Installation site and personal protection

EN 378-4 Refrigerating systems and heat pumps. Safety and environmental requirements. Part 4: Operation, maintenance, repair and recovery

ÖWAV Regelblatt 207 Systems for utilising geothermal energy

DIN 8901 Refrigerating systems and heat pumps - Protection of soil, ground and surface water- safety requirements and environmental requirements and testing

DIN 4140-2 Insulation work on operational equipment in the industry and in building services - implementation of heat/cold insulation

ÖNORM B 2602 Water resources development - wells - planning, construction and operation

ÖWAV-Arbeitsbehelf Nr. 3 Water-supply aspects for proposing ground water pump systems

DIN 18005 Noise abatement in town planning, calculation method

VDI 2058, Blatt 2, 1988 06 Assessment of noise with regard to the risk of hearing damages

VDI 2058, Blatt 3, 1988 06 Assessment of noise in the working area with regard to specifi c operations

EN 12828 Heating systems in buildings- planning/installation of hot water heating systems

ÖNORM H 5195-1 Prevention of corrosion damage and calcareous deposit formation in closed hot water heating systems with operating temperatures of up to 100 °C

ÖNORM H 5195-2 Frost protection in heating systems and other systems with heat carriers

EN 12831 Heating systems in buildings- Method for calculation of the design heat load

SIA 381/2 Climate data on recommendation 381/1

SIA 384.201 Heating systems in buildings- Method for calculation of the design heat load

DIN EN 12831Beiblatt 1

Heating systems in buildings- Heating systems in buildings- Method for calculation of the design heat load and National Annex NA

ÖNORM H 7500 Heating systems in buildings- Method for calculation of the design heat load

DIN 4030 Assessment of water, soil and gases for their aggressiveness to concrete

VDI 2067-12 Economic effi ciency of building installations - Effective energy requirements for heating service water

EN 255 Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors

EN 14511 Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling

EN 61000 Electromagnetic compatibility

DIN EN 1264-4 Water based surface embedded heating and cooling systems- Part 4: Installation

200



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

201



11. GLOSSARY

Technical handbook

Glo

ssary

1

2

3

4

5

6

7

8

9

10

11

202



11. GLOSSARY

Technical handbook

Glo

ssa

ry

1

2

3

4

5

6

7

8

9

10

11

203

1

2

3

4

5

6

7

8

9

10

11



11. GLOSSARY

Technical handbook

Glo

ssa

ry

204

1

2

3

4

5

6

7

8

9

10

11



11. GLOSSARY

Technical handbook

Glo

ssa

ry

204

DIE IDM-ZENTRALE IN MATREI IN OSTTIROL

IDM ENERGIESYSTEME GMBH Seblas 16 – 18, A-9971 Matrei in Ost t iro lTe lefon +43(0)4875.6172 - 0 Te lefax +43(0)4875.6172 - 85 E-mail [email protected]

w w w. i d m - e n e r g i e . c o m

IDM- IDM-Ser vice COMMISSIONING – MAINTENANCE – SERVICE-ON-SITE Our Service-technicians help you on site. Your regional contacts you can fi nd on our website www.idm-energie.com.

IDM-Akademie KNOW-HOW FOR SALES AND TECHNOLOGYLook for seminars on our websi te: www.idm-energie.com We are looking forward to your par t ic ipat ion.

DIE ENERGIEFAMILIE

We take care of your wellbeing. Leading technology from IDM. Know-how fom installers.

YOUR IDM SALESPARTNER

HEAT PUMP MANUAL - Dunster · HEAT PUMP MANUAL 2014 DIE FAMI HEAT PUMPS FOR YOUR WELLBEING. 1 2 3 4...

Documents

Transcript of HEAT PUMP MANUAL - Dunster · HEAT PUMP MANUAL 2014 DIE FAMI HEAT PUMPS FOR YOUR WELLBEING. 1 2 3 4...