Planning Guide 54-80 kW

Planning Guide 54-80 kW

6 720 814 720-01.1I

6 72

0 81

7 05

2 (2

015/

06)

Table of Contents

Planning Guide 54-80 kW – 6 720 817 052 (2015/06)2

Table of Contents

1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Dimensioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 One heat pump, electrical boiler, no DHW from heat pump . . . . . 6

5 One heat pump, electrical boiler, DHW from one coil cylinder . . . 9

6 One heat pump, electrical boiler, DHW from two coil cylinders 12

7 One heat pump, electrical boiler, DHW from fresh water station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8 Two heat pumps, electrical boiler, no DHW from heat pump . . 18

9 Two heat pumps, electrical boiler, DHW from one coil cylinder 21

10 Two heat pumps, electrical boiler, DHW from two coil cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

11 Two heat pumps, electrical boiler, DHW from four coil cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

12 Two heat pumps, electrical boiler, DHW from fresh water station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

13 One heat pump, oil or gas boiler, no DHW from heat pump . . . 33

14 One heat pump, oil or gas boiler, DHW from one coil cylinder . 36

15 One heat pump, oil or gas boiler, DHW from two coil cylinders 39

16 One heat pump, oil or gas boiler, DHW from fresh water station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

17 Two heat pumps, oil or gas boiler, no DHW from heat pump . . 46

18 Two heat pumps, oil or gas boiler, DHW from one coil cylinder 49

19 Two heat pumps, oil or gas boiler, DHW from two coil cylinders 52

20 Two heat pumps, oil or gas boiler, DHW from four coil cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

21 Two heat pumps, oil or gas boiler, DHW from fresh water station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

22 One heat pump, district heating, no DHW from heat pump . . . . 61

23 One heat pump, district heating, DHW from one coil cylinder . . 64

24 One heat pump, district heating, DHW from two coil cylinders . 67

25 One heat pump, district heating, DHW from fresh water station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

26 Two heat pumps, district heating, no DHW from heat pump . . . 74

27 Two heat pumps, district heating, DHW from two coil cylinders 77

28 Two heat pumps, district heating, DHW from four coil cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

29 Two heat pumps, district heating, DHW from fresh water station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

30 Cascade, intermediate up to 5 heat pumps . . . . . . . . . . . . . . . . 87

31 Capacity chart 54 kW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89




Symbols

Planning Guide 54-80 kW – 6 720 817 052 (2015/06) 3

1 Symbols

Fig. 1

p••p

θ

Sym

bols according to ISO

/FDIS

14617This is a principal draw

ing

Vx

Shut-off valve

Non return valve, flow

direction >D

x

Adjusting valve

Vx

Vx

Control valve w

ith motor, arrow

sindicates regulating gates

Mx

Thermal valve

Gx

Thermom

eter

TxTem

perature sensor

Gx

Pressure gauge

Gx

Gx

Pressure sensor

Differential pressure sw

itch

Accum

ulator tankC

C

CW

Coil tank

Electrical boiler

EE

EM

Oil-fired boiler

Heat pum

p

Expansion vessel

Cx

Filter/Screen

Sx

Ex

Heat exchanger

Pum

pP

xVL

Air vent (autom

atical)

Sx

Filter valve

OW

Dom

estic hot vater

Inlet/ outlet

Duct (arrow

indicates flow direction)

Intersecting duct

T-branch

FxS

afety valve, outlet >

Denom

inationD

es.S

ymbol

Sym

bolD

es.D

enomination

Sym

bolD

es.D

enomination

6720817052-31.1I

Designations


2 Designations

Des. DenominationsSensorsT0 Flow temperature sensorTC2 Temperature sensor in buffer cylinderTL1 Outdoor temperature sensorTW1 DHW temperature sensorHeat pump When cascade, use Z1, Z2... as prefixTB0 Temperature sensor collector circuit inTB1 Temperature sensor collector circuit outTC0 Temperature sensor heat transfer fluid inTC1 Temperature sensor heat transfer outTC3 Temperature sensor heat transfer outPB3 Circulation pump collector circuitPC0 Circulation pump heat transfer fluidVW1 Three way valveFC1 Safety valveSC21 FilterHeating circuit When more than one heating circuit, use C1,

C2... as prefixPC1 Cirkulation pump heating circuitVC11-12 Shut-off valve PC1VC10 Three way valveVC13-14 Shut-off valvesSC11 FilterGC11- ThermometersHeating circuit primary

When cascade, use Z1, Z2... as prefix

DC21- Non return valvesVC21- Shut-off valvesCC1 Accumulator tankVA21- Draining valveCooling circuit When cascade, use Z1, Z2... as prefixFB31- Safety valveVB31-33 Filling unitVB34 Shut-off valve expansion vesselCB31 Expansion vessel deairingCB32 Expansion vesselGB31 Pressure gaugeSB31 FilterVB35 Shut-off valveDB31 Non return valveVL35 De-airing valveDHW primary When cascade, use Z1, Z2... as prefixCW1- Coil cylinder or accumulator cylinderVC41- Valves DHWVA41- Draining valveVL41- De-airing valveDHW When cascade, use Z1, Z2... as prefixFW41 Safety valveVW41- Valves DHWMW41 Thermal mixing valvePW2 Circulation pumpGW41- ThermometersDW41- Non return valves

Table 1

Additional heatEE Electrical boilerEM71 Oil or gas boilerFM71 Safety valveVL71 De-airing valveTC1 Temperature sensorVM71- Shut-off and balansing valvesVM0 Three way valveGM71- ThermometersPM1 Circulation pumpPM2 Circulation pumpDC11 Non return valveSafety circuitCC91- Expansion vesselFC91- Safety valveGC91- Pressure gaugeVL91- De-airing valveFilling unit system waterVW95- Shut-off valvesVL95- De-airing valves

Des. Denominations

Table 1

Dimensioning


3 Dimensioning

Fig. 2

Manifold cham

bers and outdoor piping1-4 m

anifold chambers w

ith maxim

um 10 boreholes/cham

berD

N 40-pipe, m

ax 25 m betw

een manifold cham

ber and borehole90 m

m P

E pipe for up to 6 boreholes betw

een manifold cham

ber and heat pump

110 mm

PE

Pipe for 7-10 boreholes betw

een manifold cham

ber and heat pump

HP

Manifold cham

ber

Max 10 boreholes,

Depth: 200 m

Manifold cham

ber

PE

Pipe 90/110 m

m

Manifold cham

ber

PE

pipe 90/110 mm

HP

HP

HP

Indoor piping

Stainless

Max flow

(l/s) with pressure drop:

Steel, 2 m

m100

150200 P

a/mD

N 40

0.70.9

1.0(0.65 m

/s)D

N 50

1.31.7

2.0(0.80 m

/s)D

N 65

2.63.3

3.8(0.93 m

/s)D

N 80

4.15.1

6.0(1.06 m

/s)D

N 100

8.210.2

12.0 (1.26 m

/s)D

N 125

14.518.1

21.1 (1.45 m

/s)V

alid for EG

30,5% och E

thanol 24,5%

CW

CC

CW

Piping for Central H

eating system

Steel pipe

Max flow

(l/s) with pressure drop:

Nom

. diameter

100150

200 Pa/m

DN

400.8

1.01.1

(0,75 m/s)

DN

501.5

1.82,1

(0,90 m/s)

DN

652.9

3.64,1

(1,06 m/s)

DN

804.4

5.46,3

(1,18 m/s)

DN

1008.8

10.812,5

(1,39 m/s)

DN

12515.3

18.821,8

(1,59 m/s)

DN

15025.0

30.835,6

(1,79 m/s)

System

for hot tap w

ater production

Central heating

system

Max 10 boreholes,

Depth: 200 m

Max 10 boreholes,

Depth: 200 m

PE

pipe 90/110 mm

One heat pump, electrical boiler, no DHW from heat pump


4 One heat pump, electrical boiler, no DHW from heat pump

Fig. 3



General specificationsOverwiewThis system solution is intended for properties with one heating circuit.Maximum system temperature requirement is 80/60 (80° flow, 60° return) at the DOT (Dimensioning Outdoor Temperature) for the region where the properties is. FunctionThe heat pump supplies the majority of the required heating. Heat production from heat pump The set point value for the flow is calculated from the outdoor temperature TL1 and the heat curve. Adjustments are made against the flow temperature T0. The curve is calculated automatically from the basic settings. The customer has the option of adapting the heat curve at different outdoor temperatures. In case of low heating system flow, start and stop of compressors are done against buffer temperature TC2 in case it shows a higher temperature than T0Exercise operationAll circulation pumps, and the 3-way valves, runs for one minute if they have not been used for 7 days.Summer/Winter modeWinter mode is activated either immediately when TL1 drops below set temperature (7°C), or after 6 hours below 15°C (both settings adjustable) Summer mode is activated when TL1 has been above 17°C for more than 3 hours (both settings adjustableFilling of the heating systemAfter filling of heating water is performed via VW96 which must comply with EN 1717. After filling in this fashion, minimizes the amount of gas introduced into the heating system since it is vented largely through VL91 during filling or immediately after. After filling more than twice a year is indicative of a too small expansion vessel or leakage. Refilling of water may be required more frequently for a certain time after commissioning.De-airing of heating systemThe type and positioning in the system of the buffer tank CC1 makes it function, together with the vent VL91, as a heating system vent.Dirt separator for the heating systemThe type and positioning in the system of the buffer tank CC1 makes it function also as a sediment separator. Gathered sediment can be flushed out via VA21. But when a heat pump is installed in an existing heating system, a magnetite filter is needed (SB11)Adjustment of heating system flowThe connecting mode according to this system solution works for any low-flow or high-flow system, but optimal function is obtained when the heating system nominal flow equals that of the heat pump. With the heat pump in continuous operation, the temperature difference TC3 – TC0 becomes the same as T0 – GC11. The flow can be adjusted primarily by adjusting the pressure height of the PC1 pumps respectively. However, a correct flow may have the consequence that only part of the heating system becomes hot. This means that the distribution valves of the heating system needs adjusting (radiators/floor heating).Flow temperature sensors T0, TC1 and C2.T0For steel pipes these sensors must be of immersion type. For copper pipe it can be a contact sensor.

Mixed circuitOverviewTwo heating circuits, one of which requires more heat, e.g. radiators and the 2:nd e.g. floor heating.

FunctionThe (optional) heating circuit with lower temperature demand is controlled through an accessory (Multi-regulator) to which an external sensor, a mixing valve and a circulation pump are connected.Mixed heating circuit C1When using C1, accessories are required, including Multi-regulator, sensor C1.T0 and circulation pump C1.PC1. The flow set point value is calculated from the outdoor temperature TL1 and the heat curve for C1 Adjustments are made against flow temperature C1.T0 by controlling C1.VC1 to open against the buffer CC1 during a temperature drop. C1.PC1 can be set to be active in winter mode only or permanently.

55 – 80 kW heat pumpOverwiewIn winter mode the respective Compressor in the heat pump (ER1, ER2) starts when T0 falls below the preset temperature by the current heat pump hysteresis, and stops when T0 rises above the preset temperatureby the current compressor hysteresis. Once stopped, the respective compressor is blocked from restarting for 3 minutes. The hysteresis is floating and individual for each compressor. This means that the starting order of the heat pumps changes; the one with the longest non operating time will start first and the one with the longest operating time will stop first.Pump control heat carrier pump PC0PC0 starts before start of the first compressor andruns for a while after the last compressor stops. PC0 is regulated to keep a constant temperature difference for TC3-TC0. PC2 can also be set to run at a fixed, preset speed. Pump control collector circuit pump PB3PC starts before the first compressor starts and runs for a while after the last compressor stops. PB3 is regulated against TB1. in order to keep a constant temperature difference TB0 - TB1 within the normal working interval. Outside normalcollector circuit temperatures, the temperature difference is adjusted to achieve optimal operation. Alternatively, a fixed speed can be set. PB3 brine pumpThe brine pump does not have to be a low energy pump according to ErP directive, but using a high energy pump for this high efficiency, twin compressor heat pump will significantly reduce system performance. In order to reach best performance and full operation range, PB3 must be a low energy, speed controlled pump, controlled by the heat pump controller via 0-10V.PC0 heating pumpAll pumps on the heating system must be low energy according to the ErP directive, in order to reach best performance, and full operation range. PC0 must be speed controlled by the heat pump controller via 0-10V.Cleaning of brine filter SB31As SB 31 is not a filter ball, but just a filter, cleaning it requires a filling bin, as the filter, and also piping at the same level needs to be drained. Follow instruction in heat pump installation manual.De-airing of collector circuitWhen ethanol is used as antifreeze it is important that there are no automatic venting devices in the collector circuit since these will tend to vent the ethanol over time. Instead, there is a 4.5 liter plastic vessel CB31 where air gathers and is vented manually via FB34. When glycol is used as antifreeze, automatic vents with microbubble separators are required instead of CB31, and FB31 must be installed directly on the pipe



3-step electric heaterOverviewAn electric heater, controlled in 3 power steps, either integrated in the heat pump or external, Is used as additional heat for both heating and potable hot water production.FunctionThe internal electric additional heat assists when the heat pump alone is unable to satisfy the heating demand. The electric additional heat can also supply hot potable water, and if necessary (DHW cylinder that stores potable water used), thermically disinfect the hot water heater on a regular basisControl of 3-step electrical heaterStep-up of the electric additional heat is performed with a degree minute calculator from the difference between actual value and set point value T0-3K. Step-down of the electric additional heat is performed with a degree minute calculator from the difference between actual value and set point value T0. The number of steps allowed for the electric additional heat can be set separately for heating and hot water.

One heat pump, electrical boiler, DHW from one coil cylinder


5 One heat pump, electrical boiler, DHW from one coil cylinder

Fig. 4




Mixed circuitOverviewTwo heating circuits, one of which requires more heat, e.g. radiators and the 2:nd e.g. floor heating.Function

The (optional) heating circuit with lower temperature demand is controlled through an accessory (Multi-regulator) to which an external sensor, a mixing valve and a circulation pump are connected.Mixed heating circuit C1When using C1, accessories are required, including Multi-regulator, sensor C1.T0 and circulation pump C1.PC1. The flow set point value is calculated from the outdoor temperature TL1 and the heat curve for C1 Adjustments are made against flow temperature C1.T0 by controlling C1.VC1 to open against the buffer CC1 during a temperature drop. C1.PC1 can be set to be active in winter mode only or permanently.





Fresh water tankOverviewThe property also requires a small to medium amount of potable hot water, which is supplied by fresh water cylinder(s).FunctionThe fresh water tank is heated by the heat pump, the 3-step electrical heater on the heat pump flow, or integrated electrical heater (backup function).Fresh water tank (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceed the stop limit. In hot water mode the compressor starts and the 3-way valve VW1 is put in hot water position. The heat pump normally charges the fresh water tank with both comperssors, until the end of the charging cycle, when the compressor with most running hours are stopped. But it is possible to make a setting to limit DHW charging to one compressor only, if the DHW cylinder is small compared to the heat pump power. The speed of PC0 is controlled during the charging to ensure high charging temperatures during the start of the charging, and high flow at the end of the charging cycle, to ensure that the buffer is charged all the way to the bottom.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water tank CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between GW41 and GW42 should be about 5K.Thermal mixing valve MW41This valve is only needed on direct customer request; there are no functional or legal requirements for it. Temperature limitation is handled by the stop level on the charging temperature from the heat pump and backup heater.

DHW dimensioning

1x 7521)

1) Coil cylinder

1x 7541) 1x 7561)

1x G2542)

2) Heat pump size

5 15 151x G2642) 5 15 151x G2722) 5 20 201x G2802) 5 20 20

Table 2 no. of apartments

One heat pump, electrical boiler, DHW from two coil cylinders


6 One heat pump, electrical boiler, DHW from two coil cylinders

Fig. 5





DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

1x G2542)

2) Heat pump size

30 40 401x G2642) 30 50 501x G2722) 30 55 551x G2802) 30 60 60


One heat pump, electrical boiler, DHW from fresh water station


7 One heat pump, electrical boiler, DHW from fresh water station

Fig. 6

Max

1 m

C1.TC

0θ

C1.V

C12 C

1.DC

11

C1.G

C11

C1.P

C1

C1.V

C11

VC

21

DC

23V

W2

VC

22

VW

1

CC

92FC

92V

L92

DC

22

CC

1

CW

1

VA

41

VA

21G

C11

DC

21

DC

41

VC

23VC

24

C1.V

C0

GC

41

VC

26V

C25

VW

97

θ TC2 C

C91

FC91

VL91

VW

98

SC

21θθ θ

θTC

0

PC

0

PB

3

TB0

TB1

VC

1θ

TC3

VW

96

VW

95

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35

EW

1 PW

1TW

4θ

DW

42V

W43

PW

2

IW1

OW

1

VW

44V

W45

VW

41

VW

42

DC

42

VW

3

TW5

θ

VC

41

FW41

θ

q

TW3

θ

TW2

GW

1

VW

46

DW

41

DC

43

TW6

θ

TW7

θ

FWS

TL1θ

θTW

1

θ

EE

1

TC1

FC1

VC

22V

C21

SC

11

VC

13V

C14




Fresh water stationOverviewThe property also requires a rather big amount of potable hot water, which is supplied by a fresh water station.FunctionThe fresh water station is heated by a buffer cylinder, that is, in turn, heated by the heat pump or the boiler.The return from the fresh water station is either sent back to the mentioned buffer, or to the heating buffer, de-pending on the return temperature.Therefore, the heating buffer must always be heated to a temperature around 40°C, also in summer. And therefore, all heating systems must be mixed.Heating buffer CW1 (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceeds the stop limit. In hot water mode the compressor starts and the 3-way valves VW1 and VW2 is put in hot water position.Fresh water stationThe fresh water station maintains the potable hot water temperature TW4 to a constant value by collecting heat from CW1 using PW1 at the needed speed. At sudden changes in potable hot water flow,The flow sensor GW1 can influence the speed of PW1 before there has been a change in TW4 temperature. The heating water return temperature from the fresh water station can either be high, when there is almost only circulation heating, then VW3 sends the water back to CW1, but when the potable hot water flow increases, the return temperature will drop, and VW3 will change to send the water to heating buffer CC1 for pre-heating.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water station and the buffer CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between TW4 and TW6/GW41 should be about 5K.

DHW dimensioning, Heat pump 54 kW




FWS 1001)

1) Fresh water station

FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders

45 -2x CW1 750 l and 1x CC1 750 l2) 55 -2x CW1 750 l and 2x CC1 750 l2) 65 -3x CW1 750 l and 2x CC1 750 l2) 70 -3x CW1 750 l and 3x CC1 750 l2) 80 -4x CW1 750 l and 3x CC1 750 l2) 85 -4x CW1 750 l and 4x CC1 750 l2) 95 95


FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders

50 -2x CW1 750 l and 1x CC1 750 l2) 60 -2x CW1 750 l and 2x CC1 750 l2) 70 -3x CW1 750 l and 2x CC1 750 l2) 80 -3x CW1 750 l and 3x CC1 750 l2) 85 -4x CW1 750 l and 3x CC1 750 l2) 95 954x CW1 750 l and 4x CC1 750 l2) 100 105


FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders

60 -2x CW1 750 l and 1x CC1 750 l2) 65 -2x CW1 750 l and 2x CC1 750 l2) 75 -3x CW1 750 l and 2x CC1 750 l2) 85 -3x CW1 750 l and 3x CC1 750 l2) 95 954x CW1 750 l and 3x CC1 750 l2) 100 1004x CW1 750 l and 4x CC1 750 l2) 100 115


FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



Two heat pumps, electrical boiler, no DHW from heat pump


8 Two heat pumps, electrical boiler, no DHW from heat pump

Fig. 7



General specificationsOverwiewThis system solution is intended for properties with one heating circuit.Maximum system temperature requirement is 80/60 (80° flow, 60° return) at the DOT (Dimensioning Outdoor Temperature) for the region where the properties is. FunctionThe heat pump supplies the majority of the required heating. Heat production from heat pump The set point value for the flow is calculated from the outdoor temperature TL1 and the heat curve. Adjustments are made against the flow temperature T0. The curve is calculated automatically from the basic settings. The customer has the option of adapting the heat curve at different outdoor temperatures. In case of low heating system flow, start and stop of compressors are done against buffer temperature TC2 in case it shows a higher temperature than T0Exercise operationAll circulation pumps, and the 3-way valves, runs for one minute if they have not been used for 7 days.Summer/Winter modeWinter mode is activated either immediately when TL1 drops below set temperature (7°C), or after 6 hours below 15°C (both settings adjustable) Summer mode is activated when TL1 has been above 17°C for more than 3 hours (both settings adjustableFilling of the heating systemAfter filling of heating water is performed via VW96 which must comply with EN 1717. After filling in this fashion, minimizes the amount of gas introduced into the heating system since it is vented largely through VL91 during filling or immediately after. After filling more than twice a year is indicative of a too small expansion vessel or leakage. Refilling of water may be required more frequently for a certain time after commissioning.De-airing of heating systemThe type and positioning in the system of the buffer tank CC1 makes it function, together with the vent VL91, as a heating system vent.Dirt separator for the heating systemThe type and positioning in the system of the buffer tank CC1 makes it function also as a sediment separator. Gathered sediment can be flushed out via VA21. But when a heat pump is installed in an existing heating system, a magnetite filter is needed (SB11)Adjustment of heating system flowThe connecting mode according to this system solution works for any low-flow or high-flow system. This way of connectiong the two heat pumps to the heating system gives a optimal range of system flow between the nominal flow of one heat pump to the total nominal flow of both heat pumps. With the heat pumps in continuous operation, the temperature difference T0 – GC11 should be in the range between TC3-TC0 and two times the difference TC3-TC0. The flow can be adjusted primarily by adjusting the pressure height of the PC1 pumps respectively. However, a correct flow may have the consequence that only part of the heating system becomes hot. This means that the distribution valves of the heating system needs adjusting (radiators/floor heating).Flow temperature sensors T0, TC1 and C2.T0For steel pipes these sensors must be of immersion type. For copper pipe it can be a contact sensor.



55 – 80 kW heat pumpsOverwiewIn winter mode one of the Compressors in the heat pump (ER1 or ER2) starts when T0 falls below the preset temperature by the current heat pump hysteresis. When one step in each working heat pump is started (If at least one compressor in a heat pump is in working order), the 2:nd compressor in each heat pump is allowed to start when T0 falls below the preset temperature by the current heat pump hysteresis. Once stopped, the respective compressor is blocked from restarting for 3 minutes. The hysteresis is floating and individual for each compressor. This means that the starting order of the heat pumps changes; the one with the longest non operating time will start first and the one with the longest operating time will stop first. But only when only one compressor in each heat pump is running, both compressors is allowed to be stopped in a heat pumpPump control heat carrier pump PC0PC0 starts before start of the first compressor andruns for a while after the last compressor stops. PC0 is regulated to keep a constant temperature difference for TC3-TC0. PC2 can also be set to run at a fixed, preset speed. Pump control collector circuit pump PB3PC starts before the first compressor starts and runs for a while after the last compressor stops. PB3 is regulated against TB1. in order to keep a constant temperature difference TB0 - TB1 within the normal working interval. Outside normalcollector circuit temperatures, the temperature difference is adjusted to achieve optimal operation. Alternatively, a fixed speed can be set. PB3 brine pumpThe brine pump does not have to be a low energy pump according to ErP directive, but using a high energy pump for this high efficiency, twin compressor heat pump will significantly reduce system performance. In order to reach best performance and full operation range, PB3 must be a low energy, speed controlled pump, controlled by the heat pump controller via 0-10V.PC0 heating pumpAll pumps on the heating system must be low energy according to the ErP directive, in order to reach best performance, and full operation range. PC0 must be speed controlled by the heat pump controller via 0-10V.Cleaning of brine filter SB31As SB 31 is not a filter ball, but just a filter, cleaning it requires a filling bin, as the filter, and also piping at the same level needs to be drained. Follow instruction in heat pump installation manual.De-airing of collector circuitWhen ethanol is used as antifreeze it is important that there are no automatic venting devices in the collector circuit since these will tend to vent the ethanol over time. Instead, there is a 4.5 liter plastic vessel CB31 where air gathers and is vented manually via FB34. When glycol is used as antifreeze, automatic vents with microbubble separators are required instead of CB31, and FB31 must be installed directly on the pipe



0-10V controlled (electric) heaterOverviewThe boiler is power controlled by a 0-10V power signal, and is used for additional heatingFunctionThe additional heat EM0 assists when the heat pump alone is unable to satisfy the heating demand Control of power controlled additional heat EM0Engaging of of the additional heat EM0 is performed with a degree minute calculator from the difference be-tween actual value and set point value T0 - 3K. When the number of degree minutes is fulfilled, the power control of EM0 begins which then regulates T0 to setpoint. Disengage of additional heat occurs when the control signal has reached 0 and the degree minute calculation of the difference between the T0 actual value and set point val-ue reaches the preset number of degree minutes.

Two heat pumps, electrical boiler, DHW from one coil cylinder


9 Two heat pumps, electrical boiler, DHW from one coil cylinder

Fig. 8






55 – 80 kW heat pumpsOverwiewIn winter mode one of the Compressors in the heat pump (ER1 or ER2) starts when T0 falls below the preset temperature by the current heat pump hysteresis. When one step in each working heat pump is started (If at least one compressor in a heat pump is in working order), the 2:nd compressor in each heat pump is allowed to start when T0 falls below the preset temperature by the current heat pump hysteresis. Once stopped, the respective compressor is blocked from restarting for 3 minutes. The hysteresis is floating and individual for each compressor. This means that the starting order of the heat pumps changes; the one with the longest non operating time will start first and the one with the longest operating time will stop first. But only when only one compressor in each heat pump is running, both compressors is allowed to be stopped in a heat pumpPump control heat carrier pump PC0PC0 starts before start of the first compressor andruns for a while after the last compressor stops. PC0 is regulated to keep a constant temperature difference for TC3-TC0. PC2 can also be set to run at a fixed, preset speed. Pump control collector circuit pump PB3PC starts before the first compressor starts and runs for a while after the last compressor stops. PB3 is regulated against TB1. in order to keep a constant temperature difference TB0 - TB1 within the normal working interval. Outside normalcollector circuit temperatures, the temperature difference is adjusted to achieve optimal operation. Alternatively, a fixed speed can be set. PB3 brine pumpThe brine pump does not have to be a low energy pump according to ErP directive, but using a high energy pump for this high efficiency, twin compressor heat pump will significantly reduce system performance. In order to reach best performance and full operation range, PB3 must be a low energy, speed controlled pump, controlled by the heat pump controller via 0-10V.PC0 heating pumpAll pumps on the heating system must be low energy according to the ErP directive, in order to reach best performance, and full operation range. PC0 must be speed controlled by the heat pump controller via 0-10V.Cleaning of brine filters Z1.SB31 and Z2.SB31As SB 31 is not a filter ball, but just a filter, cleaning it requires a filling bin, as the filter, and also piping at the same level needs to be drained. Follow instruction in heat pump installation manual.De-airing of collector circuitWhen ethanol is used as antifreeze it is important that there are no automatic venting devices in the collector circuit since these will tend to vent the ethanol over time. Instead, there is a 4.5 liter plastic vessel CB31 where air gathers and is vented manually via FB34. When glycol is used as antifreeze, automatic vents with microbubble separators are required instead of CB31, and FB31 must be installed directly on the pipe





DHW dimensioning

1x 7521)

1) Coil cylinder

1x 7541) 1x 7561)

1x G2542)

2) Heat pump size

5 15 151x G2642) 5 15 151x G2722) 5 20 201x G2802) 5 20 20


Two heat pumps, electrical boiler, DHW from two coil cylinders


10 Two heat pumps, electrical boiler, DHW from two coil cylinders

Fig. 9





DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

2x G2542)

2) Heat pump size

30 40 401x G254 + 1x G2642) 30 45 451x G254 + 1x G2722) 30 50 502x G2642) 30 50 501x G254 + 1x G2802) 30 50 501x G264 + 1x G2722) 30 55 552x G2722) 30 55 551x G264 + 1x G2802) 30 55 551x G272 + 1x G2802) 30 60 602x G2802) 30 60 60


Two heat pumps, electrical boiler, DHW from four coil cylinders


11 Two heat pumps, electrical boiler, DHW from four coil cylinders

Fig. 10





DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

2x G2542)

2) Heat pump size



Two heat pumps, electrical boiler, DHW from fresh water station


12 Two heat pumps, electrical boiler, DHW from fresh water station

Fig. 11




Fresh water stationOverviewThe property also requires a rather big amount of potable hot water, which is supplied by a fresh water station.FunctionThe fresh water station is heated by buffer cylinders, that is, in turn, heated by the heat pumps or the boiler.The return from the fresh water station is either sent back to the after heating buffer Z2.CW1, or to the pre-heating buffer Z1.CW1, de-pending on the return temperature.Heating buffer CW1 (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceeds the stop limit. In hot water mode the compressor starts and the 3-way valves VW1 and VW2 is put in hot water position.Fresh water stationThe fresh water station maintains the potable hot water temperature TW4 to a constant value by collecting heat from CW1 using PW1 at the needed speed. At sudden changes in potable hot water flow,The flow sensor GW1 can influ nce the speed of PW1 before there has been a change in TW4 temperature. The heating water return temperature from the fresh water station can either be high, when there is almost only circulation heating, then VW3 sends the water back to CW1, but when the potable hot water flow increases, the return temperature will drop, and VW3 will change to send the water to heating buffer CC1 for pre-heating.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water station and the buffer CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between TW4 and TW6/GW41 should be about 5K.

DHW dimensioning, Heat pumps 2x 54 kW




FWS 1001) FWS 2001)

1x CW1 750 l and 1x CC1 750 l2) 85 -2x CW1 750 l and 1x CC1 750 l2) 95 952x CW1 750 l and 2x CC1 750 l2) 100 1053x CW1 750 l and 2x CC1 750 l2) 100 1153x CW1 750 l and 3x CC1 750 l2) 100 1204x CW1 750 l and 3x CC1 750 l2) 100 1304x CW1 750 l and 4x CC1 750 l2) 100 145


1) Fresh water station2) No. of cylinders

FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders

100 1002x CW1 750 l and 1x CC1 750 l2) 100 1102x CW1 750 l and 2x CC1 750 l2) 100 1203x CW1 750 l and 2x CC1 750 l2) 100 1303x CW1 750 l and 3x CC1 750 l2) 100 1404x CW1 750 l and 3x CC1 750 l2) 100 1504x CW1 750 l and 4x CC1 750 l2) 100 165


FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



One heat pump, oil or gas boiler, no DHW from heat pump


13 One heat pump, oil or gas boiler, no DHW from heat pump

Fig. 12

VC21

CC

91FC

91

θ TL1

CC

1

SC21

VL91

VA21

GC

91C

2.VC10

C2.T0θ

C2.VC

12

C2.D

C11

C2.G

C11

C1.PC

1

C2.PC

1

C1.D

C11

C1.VC

12

C1.VC

13

C1.VC

11

C2.VC

13

C2.VC

11

C1.G

C11

C2C1

FC1

CB32

GB31

FB32VB31VB32VB33

FB31C

B31

θθ θ

θTC

0

PC0

PB3

TB0TB1

θTC

3

SB31

VB35

θTC

2

PC1

VC12

VC13

VC11

GC

11

θ

TC1

θ

EM71

FM71

VM71

VM72

VM74

PM1VM

73

VM0

T0

GM

72

DC

11

VM76

PM2VM

75SB11

VC14



Mixed additional heatOverviewMixed additional heat (oil or gas boiler) that can be started and stopped by a signal from the heat pump and is used as additional heat for both heating and potable hot water production.FunctionThe additional heat EM0 assists when the heat pump alone is unable to satisfy the heating demand or when the additional heat is cheaper than heat produced by the heat pump (Hybrid function)Control of mixed additional heat EM0Engaging of of the mixed additional heat EM0 is performed with a degree minute calculator from the difference between actual value and set point value T0 - 3K. When the number of degree minutes is fulfilled, the system re-ceives starting permission and the boiler circulation begins. When the temperature sensor TC1 confirms that the working temperature has been reached, the mixing valve control of VM0 begins which then regulates T0 to setpoint. Disconnection occurs when the mixing valve has closed and the degree minute calculation of the difference between the T0 actual value and set point value reaches the preset number of degree minutes. PM1 (& PM2) boiler pump controlThe boiler pump(s) is started at the same time as the start signal to the boiler EM0, and keeps running until 2 minutes after the start signal to EM0 has been removed.Heating buffer CW1 (potable hot water production)CW1 can also be heated by the boiler, via the thermal valve VM1, that start to open toward CW1 at 60°CAdjusting of mixed additional heat EM0The internal temperature regulation of the additional heat should be set about 10K above the maximal heating system temperature (the highest flow temperature of the heat curve). The start signal from the heat pump is connected in such a way that the additional heat cannot be started in the absence of this signal, but without the security function, requiring manual acknowledgement, going off. The boiler alarm should not be connected to the heat pump; if the additional heat is not hot within a reasonable amount of time an alarm is received through the temperature sensor TC1.Condensing boiler with low temp returnIf a condensing boiler with a 2:nd return is used, PM2 should be installed toghether with VM75, VM76 and DM71. It will supply the boiler with lower return temperature for the condensing part of the boiler. VM76 to be adjusted accoring to boiler requrement for minimum flow to this return (normally around 10% of nominal total flow).

One heat pump, oil or gas boiler, DHW from one coil cylinder


14 One heat pump, oil or gas boiler, DHW from one coil cylinder

Fig. 13

VC

21

CC

91FC

91

θ TL1

CC

1

SC

21

VC

23

VL91

VA

21

PC

1V

C12

VC

13

VC

11

GC

11

GC

91VW

1

C2.V

C10

C2.T0θ

C2.V

C12

C2.D

C11

C2.G

C11

C1.P

C1

C2.P

C1

C1.D

C11

C1.V

C12

C1.V

C13

C1.V

C11

C2.V

C13

C2.V

C11

C1.G

C11

GC

11

FW41

DW

41

VW

42

VW

43P

W2

IW1

GW

42

OW

1

GW

41

VW

44

VW

41

MW

41θ

VL95

VW

96

VW

97

CW

1

VA

41V

W45

C2C1

θ

TC1

VW

95

θθ θ

θ

FC1

TC0

PC

0

PB

3

TB0

TB1

θTC

3

θ

EM

71FM

71V

M71

VM

72

VM

74P

M1VM

73

VM

0

T0

GM

72

θTC

2

DC

11

VM

76P

M2VM

75S

B11

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35

VC

22

VC

24




Fresh water tankOverviewThe property also requires a small to medium amount of potable hot water, which is supplied by fresh water cylinder(s).FunctionThe fresh water tank is heated by the heat pump, the 3-step electrical heater on the heat pump flow, or integrated electrical heater (backup function).Fresh water tank (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceed the stop limit. In hot water mode the compressor starts and the 3-way valve VW1 is put in hot water position. The heat pump normally charges the fresh water tank with both comperssors, until the end of the charging cycle, when the compressor with most running hours are stopped. But it is possible to make a setting to limit DHW charging to one compressor only, if the DHW cylinder is small compared to the heat pump power. The speed of PC0 is

controlled during the charging to ensure high charging temperatures during the start of the charging, and high flow at the end of the charging cycle, to ensure that the buffer is charged all the way to the bottom.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water tank CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between GW41 and GW42 should be about 5K.Thermal mixing valve MW41This valve is only needed on direct customer request; there are no functional or legal requirements for it. Temperature limitation is handled by the stop level on the charging temperature from the heat pump and backup heater.

DHW dimensioning

1x 7521)

1) Coil cylinder

1x 7541) 1x 7561)

1x G2542)

2) Heat pump size

5 15 151x G2642) 5 15 151x G2722) 5 20 201x G2802) 5 20 20


One heat pump, oil or gas boiler, DHW from two coil cylinders


15 One heat pump, oil or gas boiler, DHW from two coil cylinders

Fig. 14

VC

21

CC

91FC91

θ TL1

CC

1

SC

21

VL91

VA

21

GC

91

VW

1

VC

10C

2.TC1

θ

C2.V

C12 C

2.DC

11

C2.G

C11

C1.P

C1

C2.P

C1

C1.D

C11

C1.V

C12

C1.V

C11

C1.V

C11

C2.V

C13

C2.V

C11

C1.G

C11

C2C1

θθ θ

θ

FC1

TC0

PC

0

PB

3

TB0

TB1

θTC

3

PC

1V

C12

VC

13

VC

11

GC

11

θ

TC1

θ

EM

71FM

71V

M71

VM

72

VM

74P

M1VM

73

VM

0

T0

GM

72

DC

11

VM

76P

M2VM

75S

B11

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35

θTC

2

VC

23

VC

41

VC

42

Z2.V

A41

FW41

DW

42

VW

42

VW

43P

W2

GW

42

OW

1

VW

44

VW

45

GW

41V

W97

VL95

VW

96V

W95

θ

IW1

VW

41

Z1.V

A41

Z2.CW

1Z1.C

W1

Z2.TW1

MW

41θ

Z1.VL41

Z1.VC

23

θ Z1.TW1

DW

41




Fresh water tankOverviewThe property also requires a small to medium amount of potable hot water, which is supplied by fresh water cylinder(s).FunctionThe fresh water tank is heated by the heat pump, the 3-step electrical heater on the heat pump flow, or integrated electrical heater (backup function).Fresh water tank (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceed the stop limit. In hot water mode the compressor starts and the 3-way valve VW1 is put in hot water position. The heat pump normally charges the fresh water tank with both comperssors, until the end of the charging cycle, when the compressor with most running hours are stopped. But it is possible to make a setting to limit DHW charging to one compressor only, if the DHW cylinder is small compared to the heat pump power. The speed of PC0 is

controlled during the charging to ensure high charging temperatures during the start of the charging, and high flow at the end of the charging cycle, to ensure that the buffer is charged all the way to the bottom.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water tank CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between GW41 and GW42 should be about 5K.Thermal mixing valve MW41This valve is only needed on direct customer request; there are no functional or legal requirements for it. Temperature limitation is handled by the stop level on the charging temperature from the heat pump and backup heater.

DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

1x G2542)

2) Heat pump size

30 40 401x G2642) 30 50 501x G2722) 30 55 551x G2802) 30 60 60


One heat pump, oil or gas boiler, DHW from fresh water station


16 One heat pump, oil or gas boiler, DHW from fresh water station

Fig. 15

θ

θ

θ

Max

1 m

θ

θ

EW

1 PW

1TW

4θ

θ

θ T0

EM

1

VM

0

VM

74V

M73

VM

72

C1.TC

0θ

C1.V

C12 C

1.DC

11

GC

11

C1.P

C1

C1.V

C13

C1.V

C11

DW

42V

W43

PW

2

IW1

OW

1

VW

44V

W45

VW

41

VW

42

VC

21

TW1

SC

1

DC

23

VW

2

VC

22

VW

1

CC

92FC

92V

L92

DC

22

CC

1

CW

1

VA

41

VA

21G

C12

DC

21

DC

42

DC

41

VW

3

TW5

θ

VC

23

VC

24

VC

41

C1.V

C0

GC

42

VC

27

FW41

VC

26

VC

25

VW

96

θ TC2

CC

91FC

91V

L91

VW

95

FC1

TC0

PC

0

PB

3TB

0

TB1

VC

1

TC3

θ

q

TW3

θ

TW2

GW

1

VW

46

θ TC1

VW

96

VW

95

VM

1

DC

43

DC

42

VC

26

PM

1

SB

11

VM

76P

M2

VM

75

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35D

W41

DC

43

TL1θ

TW6

θ

TW7

θ

FWS







Mixed additional heatOverview

Mixed additional heat (oil or gas boiler) that can be started and stopped by a signal from the heat pump and is used as additional heat for both

heating and potable hot water production.Function



The additional heat EM0 assists when the heat pump alone is unable to satisfy the heating demand or when the additional heat is cheaper than heat produced by the heat pump (Hybrid function)Control of mixed additional heat EM0Engaging of of the mixed additional heat EM0 is performed with a degree minute calculator from the difference between actual value and set point value T0 - 3K. When the number of degree minutes is fulfilled, the system re-ceives starting permission and the boiler circulation begins. When the temperature sensor TC1 confirms that the working temperature has been reached, the mixing valve control of VM0 begins which then regulates T0 to setpoint. Disconnection occurs when the mixing valve has closed and the degree minute calculation of the difference between the T0 actual value and set point value reaches the preset number of degree minutes. PM1 (& PM2) boiler pump controlThe boiler pump(s) is started at the same time as the start signal to the boiler EM0, and keeps running until 2 minutes after the start signal to EM0 has been removed.Heating buffer CW1 (potable hot water production)CW1 can also be heated by the boiler, via the thermal valve VM1, that start to open toward CW1 at 60°CAdjusting of mixed additional heat EM0The internal temperature regulation of the additional heat should be set about 10K above the maximal heating system temperature (the highest flow temperature of the heat curve). The start signal from the heat pump is connected in such a way that the additional heat cannot be started in the absence of this signal, but without the security function, requiring manual acknowledgement, going off. The boiler alarm should not be connected to the heat pump; if the additional heat is not hot within a reasonable amount of time an alarm is received through the temperature sensor TC1.Condensing boiler with low temp returnIf a condensing boiler with a 2:nd return is used, PM2 should be installed toghether with VM75, VM76 and DM71. It will supply the boiler with lower return temperature for the condensing part of the boiler. VM76 to be adjusted accoring to boiler requrement for minimum flow to this return (normally around 10% of nominal total flow).

Fresh water stationOverviewThe property also requires a rather big amount of potable hot water, which is supplied by a fresh water station.FunctionThe fresh water station is heated by a buffer cylinder, that is, in turn, heated by the heat pump or the boiler.The return from the fresh water station is either sent back to the mentioned buffer, or to the heating buffer, de-pending on the return temperature.Therefore, the heating buffer must always be heated to a temperature around 40°C, also in summer. And therefore, all heating systems must be mixed.Heating buffer CW1 (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceeds the stop limit. In hot water mode the compressor starts and the 3-way valves VW1 and VW2 is put in hot water position.Fresh water stationThe fresh water station maintains the potable hot water temperature TW4 to a constant value by collecting heat from CW1 using PW1 at the needed speed. At sudden changes in potable hot water flow,The flow sensor GW1 can influ nce the speed of PW1 before there has been a change in TW4 temperature. The heating water return temperature from

the fresh water station can either be high, when there is almost only circulation heating, then VW3 sends the water back to CW1, but when the potable hot water flow increases, the return temperature will drop, and VW3 will change to send the water to heating buffer CC1 for pre-heating.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water station and the buffer CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between TW4 and TW6/GW41 should be about 5K.




FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders






FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



Two heat pumps, oil or gas boiler, no DHW from heat pump


17 Two heat pumps, oil or gas boiler, no DHW from heat pump

Fig. 16

Z1.VB

32

CC

1

VA

21

Z2.VB

31

Z2.VC

22

Z2.SC

1

Z2.VC

21

Z2.VB

32

Z2.DB

31

Z2.DC

21

Z1.VC

22

θ TL1

Z1.DC

21

CC

91FC

91

VL91

GC

91

Z1.SB

31

Z1.DB

31

Z1.SC

1

Z1

θ

PC

0

PB

3

θθ

TB0

TB1

θ

Z1.FC1

TC0

θTC

3

Z2

θθ θ

θ

Z2.FC1

TC0

PC

0

PB

3

TB0

TB1

θTC

3

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31Z2.S

B31

θTC

2

PC

1V

C12

VC

13 VC

11

GC

11

θ

TC1

θ

EM

71FM

71V

M71

VM

72

VM

74P

M1VM

73

VM

0

T0

GM

72

DC

11

VM

76P

M2VM

75S

B11

VC

14

Z1.SB

31

Z1.VC

21

Two heat pumps, oil or gas boiler, DHW from one coil cylinder


18 Two heat pumps, oil or gas boiler, DHW from one coil cylinder

Fig. 17

Z1.VB

32

CC

1

VA

21

Z2.VB

31

Z2.VC

22

Z2.SC

1

Z2.VC

21

Z2.VB

32

Z2.DB

31

Z2.DC

21

Z1.VC

22

θ TL1

Z1.DC

21

CC

91FC

91

VL91

GC

91

Z1.VB

31

Z1.DB

31

Z1.SC

1

Z1

θ

PC

0

PB

3

θθ

TB0

TB1

θ

Z1.FC1

TC0

θTC

3

Z2

θθ θ

θ

Z2.FC1

TC0

PC

0

PB

3

TB0

TB1

θTC

3

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31Z2.S

B31

θTC

2

PC

1V

C12

VC

13

VC

11

GC

11

θ

TC1

θ

EM

71FM

71V

M71

VM

72

VM

74P

M1VM

73

VM

0

T0

GM

72

DC

11

VM

76P

M2VM

75S

B11

Z1.VW

1

FW41

DW

42

VW

42

VW

43P

W2

GW

42

OW

1

VW

44V

W45

GW

41V

W97

VL95

VW

96

VW

95

IW1

VW

41

VA

41

CW

1

MW

41θ

Z1.VC

23

θ TW1

Z1.SB

31

Z1.VC

23

Z1.VC

24

Z1.VC

21

DW

41




DHW dimensioning

1x 7521)

1) Coil cylinder

1x 7541) 1x 7561)

1x G2542)

2) Heat pump size

5 15 151x G2642) 5 15 151x G2722) 5 20 201x G2802) 5 20 20


Two heat pumps, oil or gas boiler, DHW from two coil cylinders


19 Two heat pumps, oil or gas boiler, DHW from two coil cylinders

Fig. 18

CC

1

VA

21

Z2.VC

22

Z2.SC

1

Z2.VC

21

Z2.DC

21

Z1.VC

22

θ TL1

Z1.DC

21

PC

1V

C12

VC

11

GC

11

SC

11

VC

13V

C14

Z2.VW

1

CC

91FC

91

VL91

GC

91

Z2

θθ θ

θ

Z2.FC1

TC0

PC

0

PB

3

TB0

TB1

θTC

3

Z1.DB

31

Z1.SC

1

Max

1 m

Z1.VW

1

Z1

θ

PC

0

θθ

TB0

TB1

θ

Z1.FC1

TC0

θTC

3

Z1.VB

32

Z2.VB

32

Z2.DB

31

PB

3

Z1.VB

31

Z2.VB

31

FB32

CB

32G

B31

Z2.SB

31

VB

31V

B32

VB

33

FB31

CB

31

θ

TC1

θ

EM

71FM

71

VM

71

VM

72

VM

74P

M1VM

73

VM

0

GM

72

DC

11

VM

76P

M2VM

75

T0θ

TC2

Z2.VC

23

Z1.VC

23

Z2.V

A41

FW41

DW

42

VW

42

VW

43P

W2

GW

42

OW

1

VW

44

VW

45

GW

41V

W97

VL95

VW

96V

W95

θ

IW1

VW

41

Z1.V

A41

Z2.CW

1Z1.C

W1

Z2.TW1

MW

41θ

Z1.VL41

VW

46

θ Z1.TW1

Z1.SB

31

Z1.VC

21

DW

41Z1.V

C24

Z2.VC

24




DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

2x G2542)

2) Heat pump size



Two heat pumps, oil or gas boiler, DHW from four coil cylinders


20 Two heat pumps, oil or gas boiler, DHW from four coil cylinders

Fig. 19

CC

1

VA

21

Z2.VC

22

Z2.SC

1

Z2.VC

21

Z2.DC

21

Z1.VC

22

Z1.SC

1

Max

1 m

Z1.DC

21

Z1.VW

1

PC

0

PC

0

Z2.VW

1

CC

91FC

91

VL91

GC

91

Z2.VC

23

Z1.VC

23

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

θθ θ

θTC

0

PB

3

TB0

TB1

θTC

3

SB

31

θθ θ

θTC

0

PB

3

TB0

TB1

θTC

3

Z2.VB

32

Z2.DB

31

Z1.DB

31

FC1

Z1.VB

31

Z2.VB

31

Z1

Z2

Z2.V

A41

FW41

DW

42

VW

42VW

43P

W2

GW

42

OW

1

VW

44

VW

45

GW

41

Z2.V

A42

Z1.TW

1θ

IW1

VW

41

Z1.V

A42

θ

Z1.V

A41

Z2.CW

1Z2.C

W2

Z1.CW

1Z1.C

W2

Z2.V

C41

Z2.V

C42

Z1.V

C41

Z1.V

C42

Z2.TW1

MW

41θ

Z2.VL42

Z2.VL41

Z1.VL42

Z2Z1

VW

46

Z1.VC

23

VW

97V

L95V

W96

VW

95

θ TL1

PC

1V

C12

VC

11

GC

11

SC

11

VC

13V

C14

θ

TC1

θ

EM

71FM

71

VM

71

VM

72

VM

74P

M1VM

73

VM

0

GM

72

DC

11

VM

76P

M2VM

75

T0θ

TC2

FC1

θTC

1

θTC

1

DW

41



General specificationsOverwiewThis system solution is intended for properties with one heating circuit.Maximum system temperature requirement is 80/60 (80° flow, 60° return) at the DOT (Dimensioning Outdoor Temperature) for the region where the properties is. FunctionThe heat pump supplies the majority of the required heating. Heat production from heat pump The set point value for the flow is calculated from the outdoor temperature TL1 and the heat curve. Adjustments are made against the flow temperature T0. The curve is calculated automatically from the basic settings. The customer has the option of adapting the heat curve at different outdoor temperatures. In case of low heating system flow, start and stop of compressors are done against buffer temperature TC2 in case it shows a higher temperature than T0Exercise operationAll circulation pumps, and the 3-way valves, runs for one minute if they have not been used for 7 days.Summer/Winter modeWinter mode is activated either immediately when TL1 drops below set temperature (7°C), or after 6 hours below 15°C (both settings adjustable) Summer mode is activated when TL1 has been above 17°C for more than 3 hours (both settings adjustableFilling of the heating systemAfter filling of heating water is performed via VW96 which must comply with EN 1717. After filling in this fashion, minimizes the amount of gas introduced into the heating system since it is vented largely through VL91 during filling or immediately after. After filling more than twice a year is indicative of a too small expansion vessel or leakage. Refilling of water may be required more frequently for a certain time after commissioning.De-airing of heating systemThe type and positioning in the system of the buffer tank CC1 makes it function, together with the vent VL91, as a heating system vent.Dirt separator for the heating systemThe type and positioning in the system of the buffer tank CC1 makes it function also as a sediment separator. Gathered sediment can be flushed out via VA21. But when a heat pump is installed in an existing heating system, a magnetite filter is needed (SB11)Adjustment of heating system flowThe connecting mode according to this system solution works for any low-flow or high-flow system. This way of connecting the two heat pumps to the heating system gives a optimal range of system flow between the nominal flow of one heat pump to the total nominal flow of both heat pumps. With the heat pumps in continuous operation, the temperature difference T0 – GC11 should be in the range between TC3-TC0 and two times the difference TC3-TC0. The flow can be adjusted primarily by adjusting the pressure height of the PC1 pumps respectively. However, a correct flow may have the consequence that only part of the heating system becomes hot. This means that the distribution valves of the heating system needs adjusting (radiators/floor heating).Flow temperature sensors T0, TC1 and C2.T0For steel pipes these sensors must be of immersion type. For copper pipe it can be a contact sensor.







DHW dimensioning

4x 7521)

1) Coil cylinder

4x 7541) 4x 7561)

2x G2542)

2) Heat pump size



Two heat pumps, oil or gas boiler, DHW from fresh water station


21 Two heat pumps, oil or gas boiler, DHW from fresh water station

Fig. 20

6720817052-18.2I



General specificationsOverwiewThis system solution is intended for properties with one heating circuit.Maximum system temperature requirement is 80/60 (80° flow, 60° return) at the DOT (Dimensioning Outdoor Temperature) for the region where the properties is. FunctionThe heat pump supplies the majority of the required heating. Heat production from heat pump The set point value for the flow is calculated from the outdoor temperature TL1 and the heat curve. Adjustments are made against the flow temperature T0. The curve is calculated automatically from the basic settings. The customer has the option of adapting the heat curve at different outdoor temperatures. In case of low heating system flow, start and stop of compressors are done against buffer temperature TC2 in case it shows a higher temperature than T0Exercise operationAll circulation pumps, and the 3-way valves, runs for one minute if they have not been used for 7 days.Summer/Winter modeWinter mode is activated either immediately when TL1 drops below set temperature (7°C), or after 6 hours below 15°C (both settings adjustable) Summer mode is activated when TL1 has been above 17°C for more than 3 hours (both settings adjustableFilling of the heating systemAfter filling of heating water is performed via VW96 which must comply with EN 1717. After filling in this fashion, minimizes the amount of gas introduced into the heating system since it is vented largely through VL91 during filling or immediately after. After filling more than twice a year is indicative of a too small expansion vessel or leakage. Refilling of water may be required more frequently for a certain time after commissioning.De-airing of heating systemThe type and positioning in the system of the buffer tank CC1 makes it function, together with the vent VL91, as a heating system vent.Dirt separator for the heating systemThe type and positioning in the system of the buffer tank CC1 makes it function also as a sediment separator. Gathered sediment can be flushed out via VA21. But when a heat pump is installed in an existing heating system, a magnetite filter is needed (SB11)Adjustment of heating system flowThe connecting mode according to this system solution works for any low-flow or high-flow system, but optimal function is obtained when the heating system nominal flow of one to the combined nominal flow of both heat pumps. With the heat pump in continuous operation, the temperature difference TC3 – TC0 becomes up to two times T0 – GC11. The flow can be adjusted primarily by adjusting the pressure height of the PC1 pumps respectively. However, a correct flow may have the consequence that only part of the heating system becomes hot. This means that the distribution valves of the heating system needs adjusting (radiators/floor heating).Flow temperature sensors T0, TC1 and C2.T0For steel pipes these sensors must be of immersion type. For copper pipe it can be a contact sensor.






Fresh water stationOverviewThe property also requires a rather big amount of potable hot water, which is supplied by a fresh water station.FunctionThe fresh water station is heated by buffer cylinders, that is, in turn, heated by the heat pumps or the boiler.The return from the fresh water station is either sent back to the after heating buffer Z2.CW1, or to the pre-heating buffer Z1.CW1, de-pending on the return temperature.Heating buffer CW1 (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceeds the stop limit. In hot water mode the compressor starts and the 3-way valves VW1 and VW2 is put in hot water position.Fresh water stationThe fresh water station maintains the potable hot water temperature TW4 to a constant value by collecting heat from CW1 using PW1 at the needed speed. At sudden changes in potable hot water flow,The flow sensor GW1 can influ nce the speed of PW1 before there has been a change in TW4 temperature. The heating water return temperature from the fresh water station can either be high, when there is almost only circulation heating, then VW3 sends the water back to Z2.CW1, but when the potable hot water flow increases, the return temperature will drop, and VW3 will change to send the water to after-heating buffer Z1.CW1 for pre-heating.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water station and the buffer CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between TW4 and TW6/GW41 should be about 5K.





FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders

85 -2x CW1 750 l and 1x CC1 750 l2) 95 -2x CW1 750 l and 2x CC1 750 l2) 100 1053x CW1 750 l and 2x CC1 750 l2) 100 1153x CW1 750 l and 3x CC1 750 l2) 100 1204x CW1 750 l and 3x CC1 750 l2) 100 1304x CW1 750 l and 4x CC1 750 l2) 100 145


FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



One heat pump, district heating, no DHW from heat pump


22 One heat pump, district heating, no DHW from heat pump

θ

θθ

T0

VC

2

EC

1

VC

24

PC

1D

C11

VC

12

VC

13

VC

11

GC

11

CC

91FC

91

CC

1

VL91

VA

21

VW

2 EW

1

TW2

DW

42 VW

42

VW

43P

W2

IW1

GW

42O

W1

VW

44V

W45

VW

41

TL1

VC

14 SC

11

θTC

2

VC

23

SC

21

PC

0

θθ θ

θ

FC1

TC0

PB

3

TB0

TB1

θTC

3

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35

DW

41



Fig. 21







District heatingOverviewPrimary valves for district heating water are controlled by the heat pump controller and an accessory module and is used as additional heat for both heating and potable hot water production.FunctionDistrict heating via VM0 assists when the heat pump alone is unable to satisfy the heating demand or when the additional heat is cheaper than heat produced by the heat pump (Hybrid function). District heating via VW2 as-sists when CW1, which is heataed the heat pump, is unable to reach set DHW temperature or when the addition-al heat is cheaper than heat produced by the heat pump (Hybrid function).Control of district heating for additional heatActivation of additional heat via VM0 is performed with a degree minute calculator from the difference between actual value and set point value T0 - 3K. When the number of degree minutes is fulfilled, the additional heat re-ceives starting permission, and the mixing valve control of VM0 begins, which then regulates T0 to set point. Dis-connection occurs when VM0 has closed and the degree minute calculation of the difference between the T0 ac-tual value and set point value reaches the preset number of degree minutes, and hybrid function for district heat-ing is not active.Control of district heating hybrid functionIf the calculated current energy cost for producing heat with the heat pump is higher than the current cost for dis-trict heating, the district heating valves then activates to regulate T0 to its set point, and the heat pump shuts down. When the cost of district heating increases above the price for energy produced by the heat pump, the heat pump restart, and the district heating valve close.Heating potable hot water production with district heatingIf the potable hot water temperature at TW2 drops below set point, the district heating valve VW2 immediately acti-vates, and start regulating TW2 to set point by opening VW2. This function is controlled by the accessory module RC-Multi.

One heat pump, district heating, DHW from one coil cylinder


23 One heat pump, district heating, DHW from one coil cylinder

Fig. 22

θ

θ

θ

θ

T0V

C2

EC

1

VC

24

VC

23

VC

22

VW

1

PC

1D

C11

VC

12

VC

13

VC

11

GC

11

VC

21

CC

91FC

91

CC

1

VL91

VA

21

SC

21

VW

2 EW

1

CW

1

TW1

TW2

VW

97

FW41

GW

41

DW

42 VW

42

VW

43P

W2

IW1

GW

42O

W1

VW

44V

W45

VW

41

VA

41

GW

43

VL95

VW

96V

W95

TL1

EW

2

EC

2V

C14 S

C11

PC

0

Max

1 m

θθ θ

θ

FC1

TC0

PB

3

TB0

TB1

θTC

3

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35

θTC

2

DW

41




Fresh water tankOverviewThe property also requires a small to medium amount of potable hot water, which is supplied by fresh water cylinder(s).FunctionThe fresh water tank is heated by the heat pump, the 3-step electrical heater on the heat pump flow, or integrated electrical heater (backup function).Fresh water tank (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceed the stop limit. In hot water mode the compressor starts and the 3-way valve VW1 is put in hot water position. The heat pump normally charges the fresh water tank with both comperssors, until the end of the charging cycle, when the compressor with most running hours are stopped. But it is possible to make a setting to limit DHW charging to one compressor only, if the DHW cylinder is small compared to the heat pump power. The speed of PC0 is controlled during the charging to ensure high charging temperatures during the start of the charging, and high flow at the end of the charging cycle, to ensure that the buffer is charged all the way to the bottom.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water tank CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between GW41 and GW42 should be about 5K.

Thermal mixing valve MW41This valve is only needed on direct customer request; there are no functional or legal requirements for it. Temperature limitation is handled by the stop level on the charging temperature from the heat pump and backup heater.

DHW dimensioning

1x 7521)

1) Coil cylinder

1x 7541) 1x 7561)

1x G2542)

2) Heat pump size

5 15 151x G2642) 5 15 151x G2722) 5 20 201x G2802) 5 20 20


One heat pump, district heating, DHW from two coil cylinders


24 One heat pump, district heating, DHW from two coil cylinders

Fig. 23

θ

θ

θ

θ

T0

VC

2E

C1

VC

24

VC

23

VC

22

VW

1

PC

1D

C11

VC

12

VC

13

VC

11

GC

11

VC

21

CC

91FC

91

CC

1

VL91

VA

21

SC

21

VW

2 EW

1

CW

1

TW1

TW2

VW

97

FW41

GW

41VW

45

VW

42

VW

43P

W2

IW1

GW

42O

W1

VW

44

DW

43

VW

41

VA

41

GW

43

VL95

VW

96V

W95

TL1

EW

2

EC

2V

C14 S

C11

PC

0

Max

1 m

θθ θ

θ

FC1

TC0

PB

3

TB0

TB1

θTC

3

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

SB

31

VB

35

θTC

2

CW

2

VA

42

VW

48D

W44

DW

41V

W47

DW

42V

W46

VC

42

VC

41

FC92






DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

1x G2542)

2) Heat pump size

30 40 401x G2642) 30 50 501x G2722) 30 55 551x G2802) 30 60 60


One heat pump, district heating, DHW from fresh water station


25 One heat pump, district heating, DHW from fresh water station

Fig. 24

θθ

θ TW1

VL92C

W1

VA

41D

C23 V

C24

VW

96

SC

1

VW

1

VC

21

CC

1

θ

T0V

C2

EC

1P

C1

DC

11

VC

12

VC

13

VC

11

GC

11

CC

91FC

91V

L91

VA

21

VW

2

EW

1

TW8D

W42

VW

43P

W2

IW1

OW

1

VW

44V

W45

VW

41

TL1

EW

2

EC

2V

C14 S

C11

VB

35

Max

1 m

θ

PC

0

PB

3

θθ

TB0

TB1

θ

FC1

TC0

θTC

3

FB32

CB

32G

B31

SB

31

VB

31V

B32

VB

33

FB31

CB

31

θ TC2

VW

1

DC

24

DW

41

EW

1 PC

4TW

4θ

VW

42

DC

42

VW

3

TW5

θ

VC

41θ

q

TW3

θ

TW2

GW

1

VW

46D

C43

FWS

VC

23

VC

22

DC

21

DC

22

VC

25

VC

26

GC

41

FW41

θ TW6

θTW

7




Fresh water stationOverviewThe property also requires a rather big amount of potable hot water, which is supplied by a fresh water station.FunctionThe fresh water station is heated by a buffer cylinder, that is, in turn, heated by the heat pump or the district heating.The return from the fresh water station is either sent back to the mentioned buffer, or to the heating buffer, de-pending on the return temperature.Therefore, the heating buffer must always be heated to a temperature around 40°C, also in summer. And therefore, all heating systems must be mixed.Heating buffer CW1 (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceeds the stop limit. In hot water mode the compressor starts and the 3-way valves VW1 and VW2 is put in hot water position.Fresh water stationThe fresh water station maintains the potable hot water temperature TW4 to a constant value by collecting heat from CW1 using PW1 at the needed speed. At sudden changes in potable hot water flow,The flow sensor GW1 can influ nce the speed of PW1 before there has been a change in TW4 temperature. The heating water return temperature from the fresh water station can either be high, when there is almost only circulation heating, then VW3 sends the water back to CW1, but when the potable hot water flow increases, the return temperature will drop,

and VW3 will change to send the water to heating buffer CC1 for pre-heating.Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water station and the buffer CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between TW4 and TW6/GW41 should be about 5K.




FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders






FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



Two heat pumps, district heating, no DHW from heat pump


26 Two heat pumps, district heating, no DHW from heat pump

Fig. 25

VW

2

EW

2

EW

1

θT0θV

C2

EC

1

CC

91FC

91V

L91

VA

21

EC

2

CC

1

Z2.DC

21

Z1.DC

21

PC

1D

C11

VC

12

VC

13

VC

11

GC

11V

C14 S

C11

TW2

DW

42 VW

42

VW

43P

W2

IW1

GW

43O

W1

VW

44V

W45

VW

41

θ TL1

θTC

2

DW

41

Z1.VB

32 Z2.SC

1

Z1.SC

1

Z2.VB

32

Z2.DB

31

Z1.DB

31

Z1

θ

PC

0

PB

3

Z2

θθ θ

θ

Z2.FC1

TC0

PC

0

PB

3

TB0

TB1

VC

1θ

TC3

θθ

TB0

TB1

θ

Z1.FC1

TC0

VC

1θ

TC3

Z1.VB

31

Z2.V

B31

FB32 C

B32 G

B31

Z2.SB

31

VB

31V

B32

VB

33

FB31

CB

31

Z1.SB

31

Z1.VC

22

Z1.VC

21

Z2.VC

22

Z2.VC

21

Two heat pumps, district heating, DHW from two coil cylinders


27 Two heat pumps, district heating, DHW from two coil cylinders

Fig. 26

VW

2

EW

2

EW

1

Z1.CW

1

θ Z1.TW1

θ

Z1.VC

22

GW

42

Z1.VC

21

Z1.VA

41

GW

44

Z2.CW

1

θ GW

41

Z2.VA

41

Z2.VC

22Z2.V

C21

Z1.VL41

Z2.TW1

T0θV

C2

EC

1

CC

91FC

91V

L91

VA

21

EC

2

Z1.VB

32

Z1.VW

1

Z2.VW

1

CC

1

Z2.DC

21

Z1.DC

21

PC

1D

C11

VC

12

VC

13

VC

11

GC

11V

C14 S

C11

VW

97

VL95

VW

96V

W95

FW41

TW2

DW

42 VW

42

VW

43P

W2

IW1

GW

43O

W1

VW

44V

W45

VW

41

θ TL1

θTC

2

DW

41

Z2.SC

1

Z1.SC

1

Z2.VB

32

Z2.DB

31

Z1.DB

31

Max

1 mZ1

θ

PC

0

PB

3

Z2

θθ θ

θ

Z2.FC1

TC0

PC

0

PB

3

TB0

TB1

VC

1θ

TC3

θθ

TB0

TB1

θ

Z1.FC1

TC0

VC

1θ

TC3

Z1.VB

31

Z2.V

B31

FB32 C

B32 G

B31

Z2.SB

31

VB

31V

B32

VB

33

FB31

CB

31

Z1.SB

31

Z1.VC

22

Z2.VC

21

Z2.VC

22

Z1.VC

21






DHW dimensioning

2x 7521)

1) Coil cylinder

2x 7541) 2x 7561)

2x G2542)

2) Heat pump size



Two heat pumps, district heating, DHW from four coil cylinders


28 Two heat pumps, district heating, DHW from four coil cylinders

Fig. 27

VW

2

EW

2

EW

1

Z1.CW

1

θ Z1.TW1

θ

Z1.VC

24

GW

42

Z1.VC

23

Z1.VA

41

GW

44

Z2.CW

2

θ GW

41

Z2.VA

42

Z2.VC

24Z2.V

C23

Z1.VL41

Z2.TW1

T0θV

C2

EC

1

CC

91FC

91V

L91

VA

21

EC

2

Z1.VB

32

Z1.VW

1

Z2.VW

1

CC

1

Z2.DC

21

Z2.VC

21

Z1.DC

21

PC

1D

C11

VC

12

VC

13

VC

11

GC

11V

C14 S

C11

VW

97

VL95

VW

96V

W95

FW41

TW2

DW

42 VW

42

VW

43P

W2

IW1

GW

43O

W1

VW

44V

W45

VW

41

θ TL1

θTC

2

DW

41

Z2.SC

1

Z1.SC

1

Z2.VB

32

Z2.DB

31

Z1.DB

31

Max

1 mZ1

θ

PC

0

PB

3

Z2

θ

θ

θ

Z2.FC1

TC0

PC

0

TB1

θTC

3

θθ

TB0

TB1

θ

Z1.FC1

TC0

θTC

3

FB32

CB

32G

B31

VB

31V

B32

VB

33

FB31

CB

31

Z2.CW

1

Z2.VA

41Z1.V

A42

Z1.VL42

Z1.CW

2

Z2.VL41

Z2.VA

41Z2.V

A42

Z1.VA

42Z1.V

A41

Z2.SB

31 θ

PB

3

TB0

Z2.VB

31

Z1.VB

31

Z1.SB

31






DHW dimensioning

4x 7521)

1) Coil cylinder

4x 7541) 4x 7561)

2x G2542)

2) Heat pump size



Two heat pumps, district heating, DHW from fresh water station


29 Two heat pumps, district heating, DHW from fresh water station

Fig. 28

θθ

Z1.TW1

Z1.VL92C

W1

Z1.VA

41

Z1.VC

24 VW

96

θ Z2.TW1 Z2.V

L92CW

2

Z2.VA

41

Z2.VC

23

Z2.SC

1

Z2.DC

21

Z1.SC

1

Z1.DC

21

Z1.VW

1Z1.V

C23

CC

1

θ

T0

VC

2E

C1

PC

1D

C11

VC

12

VC

13

VC

11

GC

11

CC

91FC

91V

L91

VA

21

VW

2

EW

1

TW8D

W42 V

W42

VW

43P

W2

IW1

OW

1

VW

44V

W45

VW

41

TL1

EW

2

EC

2V

C14 S

C11

Z2.VW

1

Z1.VB

35

Z2.VB

35

Z2.DB

31

Z1.DB

31 Z1.VC

22

Max

1 m

Z1.DC

21

Z1

θ

PC

0

PB

3

Z2

θθ θ

θ

FC1

TC0

PC

0

PB

3

TB0

TB1

VC

1θ

TC3

θθ

TB0

TB1

θ

FC1

TC0

VC

1θ

TC3

Z1.VC

23

Z2.VC

24

Z2.VC

23

Z1.VC

24

Z1.VC

23

Z1.VB

36

Z2.V

B36

FB32 C

B32 G

B31

SB

31

VB

31V

B32

VB

33

FB31

CB

31

θ TC2

EW

1 PC

4TW

4θ

VW

42

DC

42

VW

3

TW5

θ

VC

41θ

q

TW3

θ

TW2

GW

1

VW

46D

C43

FWS

Z2.V

C24

Z2.DC

23

Z2.DC

42

θθ TW

6

θTW

7

Z2.VW

2

Z1.VW

2

DW

41




Fresh water stationOverviewThe property also requires a rather big amount of potable hot water, which is supplied by a fresh water station.FunctionThe fresh water station is heated by buffer cylinders, that is, in turn, heated by the heat pumps or district heating.The return from the fresh water station is either sent back to the after heating buffer CW1, or to the pre-heating buffer CW2, de-pending on the return temperature.Heating buffer CW1 (potable hot water production)The heat pump should be set to use a local hot water sensor. Hot water mode is activated when TW1 drops below the start temperature. Hot water mode ceases when TW1 and TC0 exceeds the stop limit. In hot water mode the compressor starts and the 3-way valves VW1 and VW2 is put in hot water position.Fresh water stationThe fresh water station maintains the potable hot water temperature TW4 to a constant value by collecting heat from CW1 using PW1 at the needed speed. At sudden changes in potable hot water flow,The flow sensor GW1 can influ nce the speed of PW1 before there has been a change in TW4 temperature. The heating water return temperature from the fresh water station can either be high, when there is almost only circulation heating, then VW3 sends the water back to Z2.CW1, but when the potable hot water flow increases, the return temperature will drop, and VW3 will change to send the water to pre-heating buffer Z1.CW1 for pre-heating.

Flow in the hot potable water circulationIn order to maintain the dimensioned capacity of the fresh water station and the buffer CW1, it is important that the flow in the hot water circulation is not too high That the maximum return of the heat pump is exceeded. The temperature difference between TW4 and TW6/GW41 should be about 5K.




FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders

85 -2x CW1 750 l and 1x CC1 750 l2) 95 952x CW1 750 l and 2x CC1 750 l2) 100 1053x CW1 750 l and 2x CC1 750 l2) 100 1153x CW1 750 l and 3x CC1 750 l2) 100 1204x CW1 750 l and 3x CC1 750 l2) 100 1304x CW1 750 l and 4x CC1 750 l2) 100 145


FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders






FWS 1001)


FWS 2001)

1x CW1 750 l and 1x CC1 750 l2)

2) No. of cylinders



Cascade, intermediate up to 5 heat pumps


30 Cascade, intermediate up to 5 heat pumps

Fig. 29

Z1.SC

1

Z1.VC

21

Z1.DC

21

PC

0FC

1

θ TL1

CC

2

PC

1V

C12

VC

11

GC

11

SC

11

VC

13V

C14

CC

91FC

91

θ

VL91

TC2

GC

91

θθ θ

θTC

0

PB

3

TB0

TB1

θTC

3Z1

θθ θ

θTC

0

TB0

TB1

θTC

3Z5

θθ θ

θTC

0

TB0

TB1

θTC

3Z4

θθ θ

θTC

0

TB0

TB1

θTC

3Z3

θθ θ

θTC

0

TB0

TB1

θTC

3Z2

CB

32G

B31

FB32

VB

31V

B32

VB

33

FB31

CB

31

Z1.SB

31

Z1.VB

32

Z1.DB

31

PB

3

Z2.VB

32

Z2.DB

31

PB

3

Z3.VB

32

Z3.DB

31

PB

3

Z4.VB

32

Z4.DB

31

PB

3

Z5.VB

32

Z5.DB

31

CC

1

VA

21

Z2.SC

1

PC

0

Z4.SC

1

PC

0

Z5.SC

1

PC

0

Z3.SC

1

PC

0

Z2.DC

21

FC1

Z3.DC

21

FC1

Z4.DC

21

FC1

Z5.DC

21

FC1

Z2.VC

21Z3.V

C21

Z4.VC

21Z5.V

C21

θT0

Z2.SB

31Z3.S

B31

Z4.SB

31Z5.S

B31

Z1.VB

31Z2.V

B31

Z3.VB

31Z4.V

B31

Z5.VB

31

VL92

6720817052-32 .2I

Cascade, intermediate up to 5 heat pumps


General specificationsOverwiewThis system solution is intended for properties with one heating circuit. Maximum system temperature require-ment is 80/60 (80° flow, 60° return) at the DOT (Dimensioning Outdoor Temperature) for the region where the properties is. The heat pumps are connected in two groups, for uneven numbers of heat pumps, the group to the right should have the highest number of heat pumps. The buffer cylinders are connected in parallel using the buffer cascade kit.Heat production from heat pump The set point value for the flow is calculated from the outdoor temperature TL1 and the heat curve. Adjustments are made against the flow temperature T0. The curve is calculated automatically from the basic settings. The customer has the option of adapting the heat curve at different outdoor temperatures. In case of low heating sys-tem flow, start and stop of compressors are done against buffer temperature TC2 in case it shows a higher tem-perature than T0De-airing of heating systemThe type and positioning in the system of the buffer tank CC1 and CC2 makes it function, together with the vent VL91, and VL92 as a heating system vent. In a system of this size, it is worth having an active expansion vessel system with de-airing function.Dirt separator for the heating systemThe type and positioning in the system of the buffer tank s CC1 and CC2 makes them function also as a sediment separator, but only giving full protection for the right heat pump group. Gathered sediment can be flushed out via VA21. But when a heat pump is installed in an existing heating system, a magnetite filter that also gathers non magnetic sediment is needed (SC11)Adjustment of heating system flowThe connecting mode according to this system solution works for any low-flow or high-flow system. This way of connecting the two heat pump groups to the heating system gives an optimal range of system flow between the nominal flow of one heat pump group to the total nominal flow of both heat pump groups. With the heat pumps in continuous operation, the temperature difference T0 – GC11 should be in the range between TC3-TC0 and two times the difference TC3-TC0. The flow can be adjusted primarily by adjusting the pressure height of the PC1 pumps respectively. However, a correct flow may have the consequence that only part of the heating system be-comes hot. This means that the distribution valves of the heating system needs adjusting (radiators/floor heating).Capacity controlIn winter mode one of the Compressors in the heat pump (ER1 to ER5) starts when T0 falls below the preset temperature by the current heat pump hysteresis. When one step in each working* heat pump is started, the 2:nd compressor in each heat pump is allowed to start when T0 falls below the preset temperature by the cur-rent heat pump hysteresis. *If at least one compressor in a heat pump is in working order. Once stopped, the respective compressor is blocked from restarting for 3 minutes. The hysteresis is floating and individual for each compressor. This means that the starting order of the heat pumps changes; the one with the longest non operating time will start first and the one with the longest operating time will stop first. But only when only one compressor in each heat pump is running, both compressors is allowed to be stopped in a heat pumpPotable hot water productionIn winter mode one of the Compressors in the heat pump (ER1 to ER5) starts when T0 falls below the preset temperature by the current heat pump hysteresis. When one step in each working* heat pump is started, the 2:nd compressor in each heat pump is allowed to start when T0 falls below the preset temperature by the cur-rent heat pump hysteresis. *If at least one compressor in a heat pump is in working order. Once

stopped, the respective compressor is blocked from restarting for 3 minutes. The hysteresis is floating and individual for each compressor. This means that the starting order of the heat pumps changes; the one with the longest non operating time will start first and the one with the longest operating time will stop first. But only when only one compressor in each heat pump is running, both compressors is allowed to be stopped in a heat pumpAdditional heatAdditional heat can be connected before the PC1 pumps, to be started by the heat pump control when the heat pumps alone can’t manage heating.

Capacity chart 54 kW


31 Capacity chart 54 kW

Fig. 30

54 kWFlow

temperature (°C

)

Flow rates of w

ater and brine were adjusted in the operating

condition 0/35, 0/45 to get ∆T=5°C and ∆ T=3°C

, for 0/55 and 0/65 to get ∆T=8°C and ∆T=3°C. C

irculation pumps are not included.

Values can differ ±5%

.

100,0

Heating output

80,0

35

60,0

Power (kW)

4555

40,0

P

65Supplied pow

er

20,0

0,00 1

50

5-

Temperature from

bore hole (°C)

6720817052-27.1I




Fig. 31

64 kWFlow

temperature (°C

)

Flow rates of w


condition 0/35, 0/45 to get ∆T=5°C and ∆T=3°C




.

100,0

Heating output

80,0

35

60,0

Power (kW)

4555

40,0

P

65Supplied pow

er

20,0

0,001

50

5-

Temperature from

bore hole (°C)

6720817052-27.1I




Fig. 32

72 kWFlow

temperature (°C

)

Flow rates of w


condition 0/35, 0/45 to get ∆T=5°C and ∆T=3°C




.

100,0

Heating output

80,0

35

60,0

Power (kW)

4555

40,0

P

65Supplied pow

er

20,0

0,001

50

5-

Temperature from

bore hole (°C)

6720817052-27.1I

6720817052-29.1I




Fig. 33

80 kWFlow

rates of water and brine w

ere adjusted in the operating condition 0/35, 0/45 to get ∆T=5°C

and ∆ T=3°C, for 0/55 and

0/65 to get ∆ T=8°C and ∆T=3°C. C



.

Flow tem

perature (°C)

100,0

80,0

35

Heating output

60,0

Power (kW)

4555

40,0

P

65Supplied pow

er

20,0

0,00 1

50

5-

Temperature from

bore hole (°C)

6720817052-30.1I

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Planning Guide 54-80 kW

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Transcript of Planning Guide 54-80 kW