MDP- PACKAGED UNITS - Calor Packaged manual_eng.pdf · Description of the MDP PACKAGED unit series...

Interklima S.A

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MDP- PACKAGED UNITS

INSTALLATION AND MAINTENANCE MANUAL

Interklima S.A

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Contents

Contents………………………………………………………………………………………. 2

1. Presentation…………………………………………………………………………. 3 2. Safety precautions…………………………………………………………………. 3 3. Description of the MDP range

3.1. General………………………………………………………………………. 4 3.2. Inspection upon receipt………………………………………………….. 5 3.3. Technical data table………………………………………………………. 6 3.4. Refrigerant charge………………………………………………………... 8

4. Dimensions………………………………………………………………….………. 9 5. Installation instructions

5.1. Handling and positioning……………………………………...…..…….. 14 5.2. Access…………………………………………………..…………...……… 16 5.3. Drain Pipe………………………………………………………………...…. 16 5.4. Electrical connection

5.4.1. Line connection …………………….…………….……………...…... 16 5.4.2. Control cable connection………………………………………...….. 17

Typical wiring diagrams…………………………………………….…………...……. 19 6. Automatic control

6.1. Control description………………………………………………...……… 22 6.2. User interface………………………………………………………...…….. 23

7. Operating instructions 7.1. Before start up……………………………………………………...……… 28 7.2. Starting and operating the unit…………………………...…………..… 28 7.3. To change set points………………………..………………………….... 29

8. Maintenance………………………………………………………………...………. 8.1 General………………………….…………………………………………..…… 30 8.2 Refrigeration circuit…………………………………………………………… 30 8.3 Condenser and evaporator coils …………………………………………… 30 8.4 Fans

8.4.1 Condenser fans …………………………………………………………. 30 8.4.2 Evaporator fans …………………………………………………………. 31

9. Trouble Shooting 9.1. Problems and corrective action in heating mode…………………… 32 9.2. Problems and corrective action in cooling mode…………………… 33 9.3. Table of alarms………………………………………………………….…. 35

Appendix 1……………………………………………………………………………… 36 Menu levels

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1.Presentation The scope of this manual is to provide the customer with all the necessary

instructions for the installation, start up, use and maintenance of the MDP series.

It is advisable to have the unit periodically inspected by one of the manufacturer’ s

service technicians to ensure the unit’s maximum life and reliability.

2. Safety precautions Please read carefully the following text before proceeding with the installation of the

unit.

Attention The installation and the maintenance of the unit must be carried out by competent

persons who have complete knowledge of the safety regulations valid in the place of

installation.

Attention

All electrical connections must be carried out in conformity with local regulations.

Attention Before attempting any electrical connections indicated on the electrical drawing first

make sure that the local electrical characteristics correspond to those indicated on

the unit’ s label.

Attention

The unit must be earthed in order to avoid any danger in case of insulation problems.

Attention The electric cables must never be in contact with any refrigeration lines or any

moving parts such as fans.

Attention Before carrying out the installation or any maintenance operation make sure that the

main power switch is turned off.

Danger Movement of the unit must be carried out using methods suitable for the unit’ s

weight.

Danger Unauthorized persons should never come into contact with the unit.

Danger Electrical parts should never be touched and any work on electrical parts should not

be carried out in the presence of water or humidity.

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Danger Any operation on any part of the unit that contains refrigerant under pressure should

be carried out only by authorized technicians.

Danger Do not touch the fins of the heat exchange coil since they are sharp and may cut

unprotected hands.

3. Description of the MDP PACKAGED unit series 3.1 General The MDP series of air-to-air packaged rooftop units (cooling only or heat pump

version) contains a wide range of units from 20 up to 240 KW.

The new series fulfils both aesthetically and technically the latest market need for

PACKAGED units . The compact appearance of the units is the result of detailed study and design at

Interklima. These units thus offer

• Reduced external dimensions

• Simple construction method providing easy installation and access for

maintenance

• Fittings to enable easy transport and on-site positioning

The equipment is completely factory assembled, tested and ready for installation

The units are constructed in two sections (evaporator – condenser) with a special

rigid steel frame and side panels

The frame is made of hot-dipped galvanized steel profiles externally powder coated

and enamel baked with RAL9002 at 50 – 70 micron

It incorporates a special EPDM. gasket that forms a thermal barrier, specially

developed and patented by Interklima .

. The side panels of the evaporator are of the double skin type with a rigid factory

injected polyurethane insulation of 40mm providing

• excellent thermal insulation

• sound reduction

• good mechanical strength

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The side panels of the condenser are of hot-dipped galvanized steel plate externally

powder coated. The evaporator fans are centrifugal with double width blades –

double inlet , forward curved . All fans are statically and dynamically balanced after

manufacture , thus eliminating any possibility of vibration .

.The 3-phase induction fan motors (380V/3ph/50Hz ) are of the totally enclosed fan-

cooled type (TEFC) with class F insulation and IP54 protection.

The filters are of the cassette type (50mm.), constructed with a Hot-dipped

galvanized steel frame . They are EU4 standard according to ASHRAE Std52-76

and are installed in the inlet .

The refrigeration circuit comprises of one , two or tandem scroll compressors . Each

refrigeration circuit has a thermal expansion valve, bi-flow filter drier, two way valves,

electromagnetic valve, and a four-way valve(if a Heat pump)

The electrical board is sealed (IP 55) and includes everything necessary for the

control and protection of the unit. Control of the unit is via microprocessor, details of

which are in section 6 below.

3.2 Inspection upon receipt Upon receipt of the units, you should check carefully that the items received

correspond to the delivery note.

Also check the unit to make sure that there is no damage due to transportation or

mishandling. In case that there are signs of damage to the unit, the forwarder must

be notified immediately by registered letter. All the necessary quality controls have

been incorporated into the manufacturing procedures thus ensuring that all units

leave the factory in perfect condition. No responsibility is assumed for any damages

that may subsequently occur, due to incorrect handling, storage or transportation of

the units.

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MDP Packaged Air Handling Units (Cooling + Heat pumps) Technical data table

Type MDP-20 MDP-30 MDP-42 MDP-48 MDP-58 MDP-66 kw 19,2 28,8 40,3 46,1 55,7 63,4 RT 5,5 8,2 11,5 13,1 15,8 18 Nominal Cooling Capacity R407c

BTU/H 65.455 98.182 137.455 157.091 189.818 216.000 kw 20 31 41 46 55 62 Nominal Heating Capacity R407c

kcal/h 17.338 26.419 35.501 39.629 47.059 53.664 kw 20 30 42 48 58 66 RT 5,7 8,5 11,9 13,6 16,5 18,8 Nominal cooling capacity R22

BTU/H 68.182 102.273 143.182 163.636 197.727 225.000 kw 21 32 43 48 57 65 Nominal heating capacity R22

kcal/h 18.060 27.520 36.980 41.280 49.020 55.900 Material Galvanized steel Construction Colour Light grey-beige (RAL 9002)

Insulation (evaporator side) 40 mm injected polyurethene-Double wall panels-Thermal barrier frames Compressor type SCROLL Quantity 1 1 1 2 2 2 Capacity steps 1 1 1 2 2 2 Absorbed power (cooling/heating) kw 4,7/4,8 8,7/8,8 10,2/10,3 12,1/12,2 14,4/14,6 16,4/16,6 Nominal operating current A 8,41/8,72 14,5/14,6 17,8/18,0 21,7/21,8 29,0/29,1 30,6/30,8 Maximum operating current Α 12,1 20 27 34 40 44 Carter resistance w 70 70 70 140 140 140 Electrical characteristics 400-3-50 Condenser High capacity cross finned coil with internally finned tubes and louver fins Condenser Fan Type Axial Quantity 1 1 1 2 2 2 Airflow m³/h 9.000 8.900 8.800 17.400 16.800 16.000 Speed RPM 830 830 830 820 820 820 Absorbed power kw 0,46 0,46 0,46 0,94 1 1 Nominal operating current Α 3 3 3 6 6 6 Maximum operating current Α 1 1 1 2 2 2 Electrical characteristics 240-1-50 Evaporator Type Cross finned coil -Copper tubes/Aluminium fins Fin distance mm (fins / 1") 2,5 (10)

Face area m² 0,412 0,67 0,865 1,014 1,248 1,404 Rows 4 4 4 4 4 4 Evaporator Fan Type Centrifugal double inlet , forward curved Size 2x9-9 2x9-9 2x10-10 2x12-12 2x12-12 2x12-12 Number of fans 1 1 1 1 1 1 Nominal airflow m³/h 5.800 7.700 9.100 11.250 12.800 12.800 Speed RPM 1.014 867 714 732 611 621

Absorbed power kw 0,47 0,92 1,35 1,47 1,53 1,87 Available external static pa 100 Type of drive Tapered bush pulleys + V belts Fan Motor type Squirrel cage TEFC , insulation class F , IP55 Installed power kw 1,1 1,5 1,5 2,2 2,2 3 Speed RPM 1.430 1.430 1.430 1.430 1.430 1.425 Nominal operating current Α 2,5 3,4 3,4 5 5 6,6 Electrical characteristics 400-3-50 Total absorbed power (cooling/heating) kw 6,3/6,4 10,7/10,8 12,2/12,3 15,2/15,3 17,6/17,8 20,4/20,6 Total Nominal operating current Α 13,9/6,2 20,4/11,0 23,4/14,4 32,0/12,8 40,0/20,1 42,6/13,4 Total Maximum operating current Α 18 26 33 45 51 57 Power cables cross section mm² 6 10 16 16 16 25 Fuses 3x25 3x32 3x40 3x50 3x63 3x63 Voltage operating limits V 350-450 V Refrigerant circuit Expansion device Thermal expansion valves Refrigerant type R22 or R407c Air Filters Media pleated EU4 50 mm or Aluminium mesh EU3 50 mm Noise level at 3 m dbA 57 59 59 62 62 62

1.304 1.304 1.610 1.916 1.916 1.916 1.996 1.996 2.149 2.149 2.149 2.149

Dimensions 1.424 1.424 1.424 1.424 1.730 1.730 Shipping weight kg 685 685 750 800 900 1.100

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MDP Packaged Air Handling Units (Cooling + Heat pumps) Technical data table

Type MDP-82 MDP-100 MDP-115 MDP-135 MDP-165 MDP-195 MDP-240 kw 78,7 96,0 110,4 129,6 158,4 187,2 230,4 RT 22,4 27,3 31,4 36,8 45,0 53,2 65,5 Nominal cooling capacity

R407C BTU/H 268.364 327.273 376.364 441.818 540.000 638.182 785.455 kw 77 95 109 127 156 188 242 Nominal heating capacity

R407C kcal/h 66.048 81.734 94.118 108.979 133.747 161.818 208.051 kw 82 100 115 135 165 195 240 RT 23,3 28,4 32,7 38,4 46,9 55,4 68,2

Nominal cooling capacity R22 BTU/H 279.545 340.909 392.045 460.227 562.500 664.773 818.182 kw 80 99 114 132 162 196 252

Nominal heating capacity R22 kcal/h 68.800 85.140 98.040 113.520 139.320 168.560 216.720 Material Galvanized steel

Construction Colour Light grey-beige (RAL 9002) Insulation (evaporator side) 40 mm injected polyurethene-Double wall panels-Thermal barrier frames Compressor type SCROLL Quantity 2 2 4 4 4 4 4 Capacity steps 2 2 4 4 4 4 4 Absorbed power (cooling/heating) kw 20,4/20,6 24,6/24,7 28,9/29,1 32,6/32,8 41,2/41,5 49,2/49,4 65,2/66,5 Nominal operating current A 35,6/35,8 43,6/44,0 58,0/58,2 61,2/61,5 71,2/71,4 86,8/87,4 111,2/112,3 Maximum operating current Α 54 64 80 88 108 128 160 Carter resistance w 140 140 280 280 280 280 280 Electrical characteristics 400-3-50 Condenser High capacity cross finned coil with internally finned tubes and louver fins Condenser Fan Type Axial Quantity 4 4 4 6 6 6 8 Airflow m³/h 32.000 32.000 31.000 48.000 52.000 52.000 70.000 Speed RPM 800 800 800 800 800 800 800 Absorbed power kw 2 2 2 3 3 3 4 Nominal operating current Α 12 12 12 18 18 18 24 Electrical characteristics 240-1-50 Evaporator Type Cross finned coil -Copper tubes/Aluminium fins Fin distance mm (fins / 1") 2,5 (10) Face area m² 1,716 2,232 2,604 2,883 3,249 3,591 3,759 Rows 4 4 4 4 4 4 6 Evaporator Fan Type Centrifugal double inlet , forward curved Size 2x15-15 2x18-18 2x18-18 2x18-18 2x500 2x500 2x500 Number of fans 1 1 1 1 1 1 1 1 Nominal airflow m³/h 15.500 15.500 19.400 22.340 26.200 30.000 34.000 38.000 Speed RPM 750 637 641 655 668 640 684 Absorbed power kw 2,93 2,69 3,3 5 6,2 6,55 8,5 Available external static pa 100 Type of drive Tapered bush pulleys + V belts Fan Motor type Squirrel cage TEFC , insulation class F , IP55 Installed power kw 3 4 4 5,5 7,5 9 11 Speed RPM 1.425 1.425 1.425 1430 1.450 1.450 1.450 Nominal operating current Α 6,6 9 9 11,4 15,4 18,5 22,5 Electrical characteristics 400-3-50 Total absorbed power (cooling/heating) kw 25,4/25,6 30,6/30,7 34,9/35,1 41,1/41,3 51,7/52,0 61,2/61,4 80,2/81,5 Total Nominal operating current Α 53,6/24,4 64,0/25,0 79,0/79,2 90,6/90,9 104,6/104,8 123,3/123,9 157,5/158,8 Total Maximum operating current Α 73 85 101 117 141 165 207 Power cables cross section mm² 25 35 50 70 95 120 150 Fuses 3x80 3x100 4x125 4x125 4x160 4x200 4x250 Voltage operating limits V 350-450 V Refrigerant circuit Expansion device Thermal expansion valves Refrigerant type R22 or R407c Air Filters Media pleated EU4 50 mm or Aluminium mesh EU3 50 mm Noise level at 3 m dbA 66 66 66 68 68 68 70

1.916 2.069 2.069 2.069 2.069 2.069 2.069 2.914 3.220 3.373 4.291 4.750 4.750 5.748

Dimensions 1.730 1.883 1.883 2.036 2.342 2.495 2.495 Shipping weight kg 1.370 1.600 1.915 2.230 2.470 2.770 3.100

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Notes 1. Validity of above capacities : Summer 27 °C db/19 °C wb on coil-35 °C ambient Winter 20 °C on coil-7 °C db/80% rh ambient 2. Limits of operation Ambient -10 °C - 45 °C. Nominal air flow +- 10% On coil db 0 °C - 35 °C 3. Given cables cross sections are only indicative. Always consult local regulations 4. Units are shipped factory wired, charged and run tested. 5. All units are microprocessor controlled. Optional connection interface for BMS via modbus protocol is available. 6. Leave at least 1,5 m of distance from condenser inlet(s) and 2 m above condenser fans discharge 7. Do not install ducts and/or air silencers on condenser fans discharge. 8. Options like mixing boxes, return fans, hot water or electric heating coils are not included in the standard version. Always consult the manufacturer for such options, including external static other than 100 pa 3.4 Refrigerant charge All units are factory charged with R22 or alternatively with other types of refrigerant.

The type and quantity of refrigerant charge is clearly marked on the technical

characteristics label on the unit. Quantities of refrigerant charge are given in the table

below.

MDP TYPE MDP-20 MDP-30 MDP-42 MDP-48 MDP-58 MDP-66

REFRIGERATION CIRCUITS NUMBER

1 1 1 2 2 2

R22 CHARGE gr PER CIRCUIT 9000 9000 10000 6500 7500 9000

MDP TYPE MDP-82 MDP-100 MDP-115 MDP-135 MDP-165 MDP-195

REFRIGERATION CIRCUITS NUMBER

2 2 2 2 2 2

R22 CHARGE gr PER CIRCUIT 11000 14000 20000 19000 25000 26000

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4. DIMENSIONS

MDP-020-40 mm

MDP-030 -40 mm

MDP-042-40 mm

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MDP-066-40 mm

MDP-058-40 mm

MDP-048-40 mm

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MDP-082-40 mm

MDP-100-40 mm

MDP-115-40 mm

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MDP-135-40 mm

MDP-165-40 mm

MDP-195-40 mm

MDP-240-40mm

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5. Installation instructions 5.1 Handling and positioning

Units should be handled with care during moving and positioning. Do not push the

unit on irregular ground. Use a forklift or a crane to place the unit in its final

installation position. The base of the unit is specially designed for forklift use. When

using a forklift always leave enough space between the unit and the forklift beam, as

shown in figure 1. Avoid abrupt forklift movements.

figure 1

To position the units by crane pass steel rods through the special holes which are in

the base. Attach belts and use a crane appropriate to the weight (see the technical

data table) and height of the unit.

Important information Before raising the equipment completely it is good practice to lift it slightly to check

the belt and steel bar positioning.

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Important All units of the MDP series are air cooled. Air circulation is therefore highly important

and should not be obstructed in any way. Any obstacles that interfere with the air flow

can dramatically decrease the unit performance, creating situations of unacceptably

high pressures, or even prevent the unit from functioning altogether..

Axial fans, as those installed on the MDP units are not suitable for high external

resistances to air flow. For this reason there must be no obstacles nearer to the unit

than the distance in figure 3.

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5.2 Access Access to the evaporator section is via doors while to the rest of the unit via

removable panels. The doors open in two directions with special chrome plated

fixings and handles. The doors can also be easily completely removed if required.

The removable panels open with special tools. The electrical panel can only be

opened by the use of a special key (provided with the unit).

5.3 Drain- pipe . The following system is proposed for the correct drainage of the unit in order that

condensation from the heat exchange coil does not remain inside the unit.

CONSTRUCTION DETAIL OF DRAIN PIPE

A> NEGATIVE PRESSURE OF COIL SECTIONB> A/2

5.4 Electrical connection 5.4.1 Line connection Before attempting any electrical connection to the unit, make sure that the local

electrical network characteristics ( i.e. voltage, number of phases and frequency )

match those of the unit, as indicated on the technical characteristics label.

To connect the power line do the following :

• First open the electric board of the unit, using the special tool supplied with the

unit.

• Make sure that the main switch of the unit is in the off position.

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• Pass the cable through one of the two plastic cable ports that are installed on the

machine.

• Connect the cable to the main switch terminals and make sure that the

connections are properly tightened. The connections for the cables are clearly

indicated on the unit’ s electrical board.

Important All electrical connections must be made according to the unit’s wiring diagram and

the applicable local regulations. Cable cross-sections indicated on the technical

characteristics table are only indicative. Local regulations should always be

consulted.

Important To ground the unit, use the appropriate terminal on the electrical panel.

Important Line voltage should be within +/- 10% of the voltage indicated. Tolerance of the

voltage between phases should be less than 3%.

5.4.2 Control cable connection The following options are available for remote control as standard:

• Installation of remote on-off switch.

• Installation of remote summer-winter switch ( for heat pump units).

• Installation of remote alarm.

A full remote control panel can be supplied as an option ,upon request. (see section

on automatic control).

To install the control cables, pass the cables inside the unit using the second plastic

gasket, as described above.

Carry out the connections as indicated on the wiring diagram.

Important Connections for remote on-off and summer-winter are voltage free. Never connect

any voltage to those terminals.

Important For connection of the remote error display(LED or Relay) connect 5 A 125VAC/230

VAC

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Important The units are factory programmed for summer-winter switching on the unit keyboard.

If external switching is required, parameter H27 has to be manually changed as

described in the section covering automatic control.

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Typical wiring diagrams

W1 VU W

SF

CSF

CH

CC1 R

VCS T

PE

380

-415V

/3F

/50Ç

zL1

L3

N

L2

FC

SM1

FSF

FCH

ALARM

E01:HIGH PRESSURE CIRCUIT 1E02:LOW PRESSURE CIRCUIT 1E03:THERMAL SWITCH PROTECTION COMP.1E04:COND. FANS 1,2 THERMAL PROTECTION

E41:SUPPLY FAN THERMAL PROTECTION

E07:PROBE ST3 FAULTE40:PROBE ST1 FAULT

E00:REMOTE OFF

MDP 22-42

1

SM1 GENERAL CIRCUIT BREAKERFC1 COMPRESSOR CIRCUIT BREAKERFSF SUPPLY FAN CIRCUIT BREAKERCC1 COMPRESSOR CONTACTORCSF SUPPLY FAN CONTACTORFCH CRANKCASE HEATER COMP. CIRCUIT BREAKERVC VOLTAGE SURVEYOR

PTOT HCM1

V1U1

CC

POWER CIRCUIT

AL

AR

M (

N.C

. C

ON

TA

CT

)

SE

NS

OR

ST

1

SE

NS

OR

ST

3

FA

N 1

TH

ER

MA

L P

RO

TE

CT

ION

CO

MP

. 1

TH

ER

MA

L P

RO

TE

CT

ION

HIG

H P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

1

LO

W P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

1

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.

SS

13

HT

L1

L2

L3

NON-OFF REMOTE ON-OFF AL-AL ALARM SIGNAL(N.O. CONTACT)

MDP 22-42 R

LP

1

HP

1

2

F1 CONTROL CIRCUIT BREAKERF2 LOW VOLTAGE(12 V AC)CIRCUIT BREAKERSF FAN SPEED CONTROLVC VOLTAGE SURVEYORCC COMPRESSOR CONTACTORCSF SUPPLY FAN CONTACTORSV LIQUID LINE SOLENOID VALVEFM CONDENSER UNIT FANTH SUPPLY FAN THERMAL PROTECTION (PTO)TC COMPRESSOR THERMAL PROTECTIONTF COND.FAN THERMAL PROTECTIONHP HIGH PRESSURE PRESSOSTAT CIRCUIT LP1 LOW PRESSURE PRESSOSTAT CIRCUIT S1 SUPPLY FAN TEMPERATURE SENSORS3 COIL TEMPERATURE SENSORTR1 TRANSFORMER 220/12V AC

FROM POWER CIRCUIT

SV CH

SV

SO

LE

NO

ID L

IQU

IT V

ALV

E

Ltc

Off

ON

RE

MO

TE

ON

-OF

F

EMI FILTER

FF

FM

C

3433

SF CONTROL

LF

F1 24

N

F1

T

TH

TC

1

F1

N

CONTROL CIRCUIT

CSF

SU

PP

LY

FA

N T

HE

RM

AL

PR

OT

EC

TIO

N

SV

CC

TF

1

S3

SV

N

TR1 12V220V

ST1

ID1ID2

ST2

ID3

ST3

ID4

ST4

ID5

GND

TK1

GND

12DC

ALL

12AC

12AC

H

P1P1

L

C1

T

S1

H

NC

ID9NC

NC

12

AN2 GND

TK2

GND

ID10

ST6

ID7

T

ID11

ID8 ID6

ST5

CC

1 2 3 4 5 6 7 8 9 10

VC

AL

ENERGY 400

AL

F2

- S +

ON OFF SAL AL 1 S 3 T F1 C1T LH P1 P1 Ltc

RE

MO

TE

ON

-OF

F

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H1 H2 H3

K1

FH1

H4 H6H5

K2

FH2

H8H7 H9

K3

FH3

CM1

V1U1

CC1

W2U2 V2W1

CM2

CC2

CC2

VU W

SF

CSF

CH1 CH2

CC1

R

VCS T

PE

38

0-4

15

V/3

F/5

0Ç

z

L1

L3

N

L2

FC1 FC2

SM1

FSFFCH1

ALARM

E01:HIGH PRESSURE CIRCUIT 1E02:LOW PRESSURE CIRCUIT 1

E03:THERMAL SWITCH PROTECTION COMP.1

E04:COND. FANS 1,2 THERMAL PROTECTION


E21:HIGH PRESSURE CIRCUIT 2

E22:LOW PRESSURE CIRCUIT 2

E41:SUPPLY FAN THERMAL PROTECTION OR HEATERS SAFETY THERMOSTAT

E07:PROBE ST3 FAULT

E27:PROBE ST6 FAULT

E40:PROBE ST1 FAULT

E00:REMOTE OFF

MDP 48 -100 -3 STEP HEATERS

1

FCH2

POWER CIRCUIT

SM1 GENERAL CIRCUIT BREAKERFC1 COMPRESSOR 1 CIRCUIT BREAKERFC2 COMPRESSOR 2 CIRCUIT BREAKERFSF SUPPLY FAN CIRCUIT BREAKERFH1-3 HEATERS CIRCUIT BREAKERSCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORK1-3 HEATERS CONTACTORSCSF SUPPLY FAN CONTACTORFCH1 CRANKCASE HEATER COMP.1 CIRCUIT BREAKERFCH2 CRANKCASE HEATER COMP.2 CIRCUIT BREAKERVC VOLTAGE SURVEYOR

PTOT H

CH1 CH2

N N

STEP 3

TR112V220V

ST1

ID1ID2

ST2

ID3

ST3

ID4

ST4

ID5

GND

TK1

GND

12DC

ALL

12AC

12AC

H

P1P1

L

P2

H

P2

L

C1

T

S1

H

NC

ID9NC

NC

12

AN2 GND

TK2

GND

ID10

C2

ST6

ID7

T

ID11

ID8

T

ID6

ST5

S4

1 2 3 4 5 6 7 8 9 10

VC

AL

ENERGY 400

AL

F2

- S +

S W SAL AL 1 SS 3 4 T F1 C1F2T TL TH C2P1 P1 H P2 P2L Ltc2Ltc1

RE

MO

TE

SU

MM

ER

-WIN

TE

R

AL

AR

M (

N.C

. C

ON

TA

CT

)

SE

NS

OR

ST

1

SE

NS

OR

ST

4

SE

NS

OR

ST

3

FA

N 1

TH

ER

MA

L P

RO

TE

CT

ION

FA

N 2

TH

ER

MA

L P

RO

TE

CT

ION

CO

MP

. 1

TH

ER

MA

L P

RO

TE

CT

ION

CO

MP

. 2

TH

ER

MA

L P

RO

TE

CT

ION

HIG

H P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

1

LO

W P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

1

HIG

H P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

2

LO

W P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

2

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

2

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

1

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.1

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.2

S

4

SS

13

HT

L1

L2

L3

N ON-OFF REMOTE ON-OFFS-W REMOTE SUMMER-WINTERAL-AL ALARM SIGNAL(N.O. CONTACT)

TC

2LP

2

LP

1

HP

2

HP

1

2

F1 CONTROL CIRCUIT BREAKERF2 LOW VOLTAGE(12 V AC)CIRCUIT BREAKERSF1,2 FANS 1,2, SPEED CONTROLSF3,4 FANS 3,4, SPEED CONTROLVC VOLTAGE SURVEYORCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORCSF SUPPLY FAN CONTACTOR4V1 CIRCUIT 1 4-WAY REVERSING VALVE4V2 CIRCUIT 2 4-WAY REVERSING VALVESV1 CIRCUIT 1 LIQUID LINE SOLENOID VALVESV2 CIRCUIT 2 LIQUID LINE SOLENOID VALVEFM1,2 CONDENSER UNIT FAN 1,2FM3,4 CONDENSER UNIT FAN 3,4TH SUPPLY FAN THERMAL PROTECTION (PTO)TSAF HEATERS SAFETY THERMOSTATTC1 COMPRESSOR 1 THERMAL PROTECTIONTC2 COMPRESSOR 2 THERMAL PROTECTIONTF1,2 COND.FANS 1,2 THERMAL PROTECTIONHP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2S1 SUPPLY FAN TEMPERATURE SENSORS3 CIRCUIT 1 COIL TEMPERATURE SENSORS4 CIRCUIT 2 COIL TEMPERATURE SENSORTR1 TRANSFORMER 220/12V AC

FROM POWER CIRCUIT

SV1 CH1

SV1 SV2

CIR

CU

IT 1

LIQ

UID

SO

LEN

OID

VA

LVE

Ltc1,2

Off

ON

RE

MO

TE

ON

-OF

F

EMI FILTER

FF1

FM2

C2

3433

SF1 CONTROL

LF1

F1 24

N

F4

T

TF

1

TC

1

F1

SV2 CH2 N

CONTROL CIRCUIT

CSF

SU

PP

LY

FA

N T

HE

RM

AL

PR

OT

EC

TIO

N

TF

4

SV1

CC1

SV2

CC

1

CC

2

CC2

C1

FM1

W

S

SU

MM

ER

-WIN

TE

RR

EM

OT

E

OFFON

RE

MO

TE

ON

-OF

F

C3

FM3

C4

FM4

F1

LF2

24

N

SF1 CONTROL

33 34

EMI FILTER

FF2

TF

2T

F3

T F3 T F4

FA

N 3

TH

ER

MA

L P

RO

TE

CT

ION

FA

N 4

TH

ER

MA

L P

RO

TE

CT

ION

SV1 SV2

4V

1

4V

2

N N

S3

4V1 4V2

CIR

CU

IT 1

RE

VE

RS

ING

VA

LVE

CIR

CU

IT 2

RE

VE

RS

ING

VA

LVE

CIR

CU

IT 2

LIQ

UID

SO

LEN

OID

VA

LVE

TH

NN

4V1 4V2

Interklima S.A

21

CM3

V3U3

CC3

W4U4 V4W3

CM4

CC4

CC2

VU W

SF

CSF

CH1 CH2

CC1

R

VCS T

PE

L1

L3

N

L2

FC3 FC4

SM1

FSFFCH1

ALARM

E01:HIGH PRESSURE CIRCUIT 1E02:LOW PRESSURE CIRCUIT 1


E04:COND. FANS 1,2 THERMAL PROTECTION


E21:HIGH PRESSURE CIRCUIT 2

E22:LOW PRESSURE CIRCUIT 2

E41:SUPPLY FAN THERMAL PROTECTION OR HEATERS SAFETY THERMOSTAT

E07:PROBE ST3 FAULT

E27:PROBE ST6 FAULT

E40:PROBE ST1 FAULT

E00:REMOTE OFF

MDP 115-165 H -3 STEP HEATERS

FCH2

POWER CIRCUIT

SM1 GENERAL CIRCUIT BREAKERFC1 COMPRESSOR 1 CIRCUIT BREAKERFC2 COMPRESSOR 2 CIRCUIT BREAKERFC3 COMPRESSOR 3 CIRCUIT BREAKERFC4 COMPRESSOR 4 CIRCUIT BREAKERFSF SUPPLY FAN CIRCUIT BREAKERFH1-3 HEATERS CIRCUIT BREAKERSCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORCC3 COMPRESSOR 3 CONTACTORCC4 COMPRESSOR 4 CONTACTORK1-3 HEATERS CONTACTORSCSF SUPPLY FAN CONTACTORFCH1-4 CRANKCASE HEATERS COMP.1-4 CIRCUIT BREAKERSVC VOLTAGE SURVEYOR

PTOT H

CH1 CH2

N N

STEP 3

H1 H2 H3

K1

FH1

H4 H6H5

K2

FH2

H8H7 H9

K3

FH3

CH3

N

CH3

CC3

FCH3

CH4

N

CH4

CC4

FCH4

CM1

U1 V1 W1

CM2

W2U2 V2

FC1

CC1 CC2

FC2

STEP 1 STEP 2 STEP 3

TR1 12V220V

ST1

ID1ID2

ST2

ID3

ST3

ID4

ST4

ID5

GND

TK1

GND

12DC

ALL

12AC

12AC

H

P1P1

L

P2

H

P2

L

C1

T

S1

H

NC

ID9NC

NC

12

AN2 GND

TK2

GND

ID10

C2

ST6

ID7

T

ID11

ID8

T

ID6

ST5

S4

1 2 3 4 5 6 7 8 9 10

Z Y

ON-OFF: REMOTE ON-OFFS-W : REMOTE SUMMER-WINTERAL-AL : ALARM SIGNAL(N.O. CONTACT)Ζ-Υ : THERMOSTAT FOR HEATERS OPERATION

FA

N 1

TH

ER

MA

L P

RO

TE

CT

ION

FA

N 2

TH

ER

MA

L P

RO

TE

CT

ION

CO

MP

. 1

TH

ER

MA

L P

RO

TE

CT

ION

CO

MP

. 2

TH

ER

MA

L P

RO

TE

CT

ION

HIG

H P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

1

LO

W P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

1

HIG

H P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

2

LO

W P

RE

SS

UR

E P

RE

SS

OS

TA

T C

IRC

UIT

2

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

2

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

1

S

4

SS

13

WS

L1

L2

L3

N

MDP 115 H-3 STEP HEATERS

TC

2LP

2

LP

1

HP

2

HP

1

F1 CONTROL CIRCUIT BREAKERF2 LOW VOLTAGE(12 V AC)CIRCUIT BREAKERSF1,2 FANS 1,2,3,4 SPEED CONTROLVC VOLTAGE SURVEYORCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORCC3 COMPRESSOR 3 CONTACTORCC4 COMPRESSOR 4 CONTACTORK1 HEATERS STEP 1 CONTACTORK2 HEATERS STEP 2 CONTACTORK3 HEATERS STEP 3 CONTACTORCSF SUPPLY FAN COMMAND CONTACTORSV1 CIRCUIT 1 LIQUID LINE SOLENOID VALVESV2 CIRCUIT 2 LIQUID LINE SOLENOID VALVE4V1 CIRCUIT 1 4-WAY VALVE4V2 CIRCUIT 2 4-WAY VALVEFM1,2 CONDENSER UNIT FANS 1,2FM3.4 CONDENSER UNIT FANS 3.4TC1 COMPRESSOR 1 THERMAL PROTECTIONTC2 COMPRESSOR 2 THERMAL PROTECTIONTC3 COMPRESSOR 3 THERMAL PROTECTIONTC4 COMPRESSOR 4 THERMAL PROTECTIONTF1,2,3,4 COND.FANS 1-4 THERMAL PROTECTIONHP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2S1 SUPPLY FAN TEMPERATURE SENSORS3 CIRCUIT 1 COIL TEMPERATURE SENSORS4 CIRCUIT 2 COIL TEMPERATURE SENSORTR1 TRANSFORMER 220/12V AC

4V1CH1

4V1 4V2

CIR

CU

IT 1

RE

VE

RS

ING

VA

LV

E

CIR

CU

IT 2

RE

VE

RS

ING

VA

LV

E

Ltc1,2,3,4

Off

ON

RE

MO

TE

ON

-OF

F

EMI FILTER

CC3 CC4

LF2

F1 24

SF2 CONTROL

33 34

N2

EMI FILTER

FF2

C1

FM1

C3

FM3

C4

FM4

T

TC

3

C3

TC

4

T

C4

S

W

S3

NN

sv1 sv2

C3T T C4

CO

MP

. 4

TH

ER

MA

L P

RO

TE

CT

ION

CO

MP

. 3

TH

ER

MA

L P

RO

TE

CT

ION

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.1

Ltc1 Ltc3

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.3

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.2

Ltc2

22

0 V

FO

R E

LE

CR

ON

IC T

HE

RM

AL

PR

OT

EC

TIO

N C

OM

P.4

Ltc4

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

2

CR

AN

CA

SE

HE

AT

ER

CO

MP

RE

SS

OR

3

CH2CH3

WSALALOFFON

CC

2

4V1 4V2

D

Y

Z

T

Saf

T

TH

T/S

AF

T H T SAFZ Y

TH

ER

MO

ST

AT

FO

R H

EA

TE

RS

OP

ER

AT

ION

RE

MO

TE

SU

MM

ER

-WIN

TE

R

SU

PP

LY

FA

N T

HE

RM

AL

PR

OT

EC

TIO

N

HE

AT

ER

S S

AF

ET

Y T

HE

RM

OS

TA

T

TSV2SV1

SV1 SV2

CIR

CU

IT 1

LIQ

UIT

SO

LE

NO

ID

CIR

CU

IT 2

LIQ

UIT

SO

LE

NO

ID

VC

AL

ENERGY 400

AL

F2

- S +

ON OFF SAL AL 1 SS 3 4 T F1 C1F2T TL TH C2P1 P1 H P2 P2L

RE

MO

TE

ON

-OF

F

AL

AR

M (

N.C

. C

ON

TA

CT

)

SE

NS

OR

ST

1

SE

NS

OR

ST

4

SE

NS

OR

ST

3

FF1

FM2

C2

3433

SF1 CONTROL

LF1

F1 24

N1

F4

T

TF

1

TC

1

F1

T F3 T F4

FA

N 4

TH

ER

MA

L P

RO

TE

CT

ION

FA

N 3

TH

ER

MA

L P

RO

TE

CT

ION

4V2CH2 N

CONTROL CIRCUIT

CSF

TF

2T

F3

TF

4

SV1

CC2

SV2

DDDD

CC

1

CC

3

CC

4

K1

K2

K3

CC1

Interklima S.A

22

6. Automatic control. 6.1 Control description All units are equipped with electronic programmable microprocessor control. This control

ensures complete management of all the functions of the unit and also ensures protection of

all the unit ‘s basic components as well as full diagnostics so that all possible malfunctions

become immediately obvious to the user. The most important features are listed below.

• Fully automatic functioning of the unit by means of compressor control via a special

algorithm, using air return temperature as the controlled variable.

• Full featured protection by controlling high and low pressure, heat exchanger

protection against freeze up and water flow detection.

• Sophisticated defrost control using time and temperature.

• Linear fan speed regulation according to coil temperature or pressure, including fan

silent mode operation.

• Possibility for remote on-off

• Possibility for remote summer-winter

• Possibility for remote display alarm

All above options are provided as standard. There are further features of the electronic control

that can be supplied upon request. Below is a list of these options.

• Full featured remote keyboard, that can be easily connected to the unit by means

of a special connector (supplied with the keyboard) and a 3 wire cable having a

minimum wire cross-section of 0,5 mm. The maximum Cable length is 100m.

See user interface section for connection details.

• Connection to building management systems via modbus. As this involves a

slightly different type of control it should be made known to the factory together

with the order.

Dynamic mode set point. It is possible to program the unit so as to enable the dynamic set

point feature. This can be programmed to operate either via a 4-20 mA proportional signal

according to user setting or by means of an outdoor sensor. The special algorithm built into

the control adjusts the unit set point according to the external request.

The unit control has more than 150 programmable parameters. All units are factory

programmed and ready for operation. In case of accidental erasure of the unit ‘s program for

any reason, it can be easily reprogrammed by means of a special copy card that is connected

to the control board. All parameters are instantly uploaded to the control from the copy card. Caution This operation must be carried out only by technical service authorized by the manufacturer.

Interklima S.A

23

<IMG INFO>

6.2 User interface

The interface on the front panel of the instrument can be used to carry out

all the operations necessary for the use of the instrument, and in particular

to:

• Set operating mode

• Respond to alarm situations

• Check the state of resources

Front panel of the instrument

The instrument can function without the aid of a keyboard

Keys

Selects operating mode:

If the heating mode is enabled, each time the key is pressed the following

sequence occurs:

Stand-by -! cooling ! heating ! stand-by

if heating mode is not enabled:

Stand-by ! cooling ! stand-by

In menu mode, this key acts as a SCROLL UP or UP key (increasing

value).

Resets alarm, and turns the instrument on and off.

Press once to reset all manually reset alarms not currently active; all the alarm

events per hour will also be reset even if the alarms are not active.

Keyboard

Mode

On-off –

Alarms reset

Interklima S.A

24

IMG INFO

Hold down the key for 2 seconds to turn the instrument from on to off or vice

versa. When it is off, only the decimal point remains on the display. In menu

mode this key acts as a SCROLL DOWN or DOWN key (decreasing value).

Pressing the “mode” and “on-off” keys at the same time:

If you press both keys at the same time and then release within 2 seconds, you

will move one level deeper in the display menu.

If you press both keys for more than 2 seconds you will move one level up.

If you are currently viewing the lowest level in the menu and you press both

keys and release within 2 seconds, you will go up one level.

Display

The device can communicate information of all kinds on its status,

configuration, and alarms through a display and a number of leds on its front

panel.

Display

Normal display shows:

• regulation temperature in tenths of degrees celsius or fahrenheit

• the alarm code, if at least one alarm is active. If multiple alarms are

active, the one with greater priority will be displayed, according to the Table of

Alarms.

• If temperature control is not analogue and depends on the status of a digital

input (ST1 or ST2 configured as digital inputs), the “On” or “Off” label

will be displayed, depending on whenther temperature control is active

or not.

• When in menu mode, the display depends on the current position;

labels and codes are used to help the user identify the current

function.

Led

Led 1 compressor 1.

• ON if compressor 1 is active

• OFF if compressor 1 is not active

• Rapid BLINK if safety timing is in progress

• Slow BLINK if compressor is currently set to defrost

Power step 2 led

mode – onoff

keys

Combination

Interklima S.A

25

<IMG INFO>

• ON if power step 2 is active

• OFF if power step 2 is not active


• Slow BLINK if step 2 is currently defrosting

Power step 3 led




• Slow BLINK if step 3 is defrosting

Power step 4 led




• Slow BLINK if step 4 is defrosting

Electrical heater/boiler led

• ON if at least one internal anti-freeze electrical heater or boiler is

enabled

• OFF if both are off

Heating Led

• ON if the device is in heating mode.

Cooling Led

• ON if the controller is in cooling mode

If neither the HEATING led nor the COOLING led are on, the controller is in

STAND-BY mode.

When it is off, only the decimal point appears on the display.

Wall-mounted keyboard

The remote keyboard on the display is an exact copy of the information

displayed on the instrument, with the same leds;

Interklima S.A

26

Remote keyboard

Α. 0: Standby 1: On

Economy mode

Night Purging

Β.

Fan Cool

Heat Auto D. THERMOSTAT

The knob is used to set a deviation from the set point(according to the heat/ cool mode in use); the deviation is algebraically added to the active set point ; the maximum value (from halfway point to each of the limit switches) is factory-set (+/- 5˚C).

Remote keyboard

<IMG INFO> 282,8 148,35 0

Interklima S.A

27

Ε. Status LED:

This LED indicates the operation mode • GREEN: cooling mode • RED: heating mode • NOT LIT: standby

This LED indicates the state of the evaporation fan: • NOT LIT: fan OFF • GREEN: fan operating correctly • GREEN BLINKING: dirty filters • RED BLINKING: clogged filters • RED: alarm condition- one or more of the alarms

specified in the diagnostic chapter are present

The connection is illustrated below:

PCB CONTROL BOARD BACK VIEW OF REMOTE CONTROL

S + -

S + -

24

25 26

Interklima S.A

28

7. Operation instructions 7.1 Before start up

Before start-up of the unit ensure that everyone involved has fully understood the

safety instructions which are contained in this manual

Before undertaking whatever type of electrical connection make sure that the local

electrical network characteristics (voltage, phases, frequency) are the same with that

written on the technical characteristics table.

Connect the cable to the connection points on the central cut-off switch and ensure

that they are tight. The phase connections and the neutral are clearly marked on the

unit’s electrical board and on the electrical diagram which is located on the inside of

the electrical board access door

Connect the Remote Control wires in accordance with the unit’s electrical diagram

Set the central cut-off switch (SM1) in the “ON” position

Check that the warning light VC is lit, if not change the phase connection.

Set the switch FH1-FCH2-FCH3-FCH4 in the “ON” position for 24 hours in order to

pre-heat the oil in the compressors. Immediately after this period you are ready to

start the unit.

7.2 Starting and operating the unit

Put all the switches on the electrical board in the :ON: position

Immediately you will see that a red light lights up on the Control

To start the unit press and hold down the key for 2 seconds to turn the unit from

“OFF” to “ON” and vice versa. When the unit is “OFF” the control displays a red dot

or E00 if there is a remote on-off contact and it is in the “OFF” position. When the unit

is “ON” the display shows the return water temperature.

If you have a heat pump model you can select cooling or heating mode by means of

the key . Pressing this key you will cycle through stand by – cooling – heating –

Interklima S.A

29

stand by modes. When the unit is set for cooling operation the LED below the symbol

is lit on the screen, and when in heating mode the LED below symbol is lit.

7.3 To change set points To change set points press hold down both keys. When the screen displays “Set”,

repeat to enter the next level. By scrolling up and down the levels “Coo” and “Hea”

appear in sequence. To change the cooling set point, when the display is “Coo”,

press again momentarily and simultaneously both keys to enter the next level. The

factory setting (16ºC) appears on the screen. To change scroll up or down.

When you have the desired value on screen press and hold down both keys for 2

seconds to accept and return to the previous level. Scroll until the label “Hea”

appears on screen and repeat the above procedure to change the heating set point.

When finished return to the first level by pressing and holding down both keys for 2

seconds.

To display other useful temperatures of the system, go to level 1 as described and

scroll down until the label “tp” is displayed on the screen. Repeat the procedure to

step one level down. Scrolling down you will see the labels t02,t03,t06. When the

screen display t02 go to the next level to see the value of return air temperature.

Repeat the same procedure for t03 and t06 to see the coil temperature.

Interklima S.A

30

8. Maintenance 8.1 General Any maintenance or service operation on the units should be carried out by

authorized and competent technical personnel.

In case of repeated energisation of one or more safety devices and alarms it is

necessary to analyze the problem in depth, find the cause for it and eliminate it.

8.2 Refrigeration circuit The simple and robust construction of the refrigerant circuit prevents the majority of

possible problems, as this is the most delicate part of the unit. It is, therefore, not

necessary to execute any preventive maintenance action on the unit, as long as it is

properly operating, without any indications of malfunctions.

We, nevertheless, suggest some preventive maintenance actions, so as to ensure

that the unit continues to perform at all times at a high level.

These actions are of a routine character:

• Check the various operating and safety set points of the unit to verify that they

have the correct values.

• Check all electric and control voltage to verify that they have the correct values.

• Check the water flow, and the water filter.

• Check all the temperatures of the system and verify that they are within normal

limits.

8.3 Condenser and evaporator coils The coils do not require special maintenance. Regular cleaning only of the fins with

low pressure water spray and an appropriate cleaning agent is necessary. A regular

check of the drainage channel for possible clogging should also be undertaken.

8.4 Fans

8.4.1 Condenser fans The condenser fans areaxial The bearings are permanently sealed and

therefore do not require maintenance

Interklima S.A

31

8.4.2 Evaporator fans The evaporator fans are twin centrifugal type. Their bearings are sealed and

do not require maintenance. The belts which join the motor to the fan require regular

checking as to their wear and their tensioning. For their tensioning the motor is

positioned on a special base so that by releasing the nut(as shown in the

photograph) they can be correctly tensioned

In order to calculate the length of the belt of a unit you can use the formula

below:-

L= 2E+1,57(D1+D2)

where: L = the length of the belt in mm

E = the distance between the motor and fan shafts

D1 = the diameter of the fan pulley

D2 = the diameter of the motor pulley

Interklima S.A

32

9. Trouble shooting 9.1 Problems and corrective action in heating mode

No. Problem Probable cause Symptoms Corrective action

A Temperature of air outlet

lower than expected

A1.

Load very high

A1.1

Temperature of air outlet

lower than expected

Return the load to within

allowed operating limits

A2

Very low outside

temperature

See A1.1 Await return of outside

temperature to within operating

limits

A3.

Dirty coil fins

See A1.1 Clean coil

A4.

Coil fins obstructed

See A1.1 Move away obstruction

A5

The fans turn in the wrong

direction(only for 3 phase

fans)

See A1.1 Change the supply cable phase

connections

A6.

Lack of cooling fluid

See A1.1

Low evaporation pressure.

Many bubbles in the fluid

indicator

Check for leaks and refill with

cooling fluid to the correct level

B Cut off due to High

pressure pressostat

alarm (manual reset)

B1

Water temperature setting

is high

B1.1

The compressor stops and

display shows alarm code

E01- compressor 1

E21 – compressor 2

Reset to correct value

B2

Blocked heat exchanger,

low water supply

B2.1

High difference between

water inlet and exit

temperatures

See C1.1

Clean heat exchanger and

water filter and check water

pump

C The unit does not

operate and displays

error code E07

C1

Sensor ST3(coil circuit1)

short-circuited or cut cable

C1.1


error display E07

Check sensor and connection.

Possible replacement

D The unit does not


error code E41

D1 Overheating of the outlet

fan or of the heating element

D1.1 the compressor on the

refrigeration circuit stops. On the screen appears the message ALARM CODE :

E41

check the fan and the heating element

E The unit does not


error code E03

E1

Thermal protection switch

for compressor 1

E1.1


error display E03

Check load and cooling fluid

level

F The unit does not


error code E13

F1


for compressor 2

F1.1


error display E13


level

G The unit does not


error code E04

G1

Fan1 thermal protection

switch

G1.1

Fan thermal alarm E04

Check fan

H The unit does not

t d di l

H1 H1.1 Check fan

Interklima S.A

33


error code E24


switch


I The unit does not work

and displays error code

E00

I1

Remote “ON_OFF” in OFF

position

I1.1

Unit stops operating and

displays error message

E00

Switch off the remote “on-OFF”

J The unit does not

operate and there is no

error display even if the

main power switch is in

the “ON” position

J01

The fuse is in the “OFF”

position

J1

No display on the screen

Check the control circuit . Put

the fuse in the “ON” position

J2

The 3 faces line voltage

monitors has cut down the

circuit

J2.1

No display shows

Check the electric supply is at

the correct machine operating

level and the phase installation

9.2 Problems and corrective action in cooling mode No Problem Probable cause Symptoms Corrective action A Temperature of

AIRoutlet higher than

expected

A2

Very high load

A2.1

Temperature of AIR outlet

higher than expected

Return the load within allowed

operating limits

A3

Very high outside

temperature

See A2.1 Await return of outside

temperature within operating

limits

A4.

Dirty coil fins

See A2.1 Clean coil

A5.

Coil fins obstructed

See A2.1 Move away obstruction

A6

The fans turn in the wrong

direction(only 3 phase

fans)

See A2.1 Change the supply cable phase

connections

A7.


See A2.1

Low evaporation pressure.

Many bubbles in the fluid

indicator



B Cut off due to High

pressure pressostat

alarm (manual reset)

B1

One or more fans does not

operate

B1.1



E01- compressor 1

E21 – compressor 2

Check the thermal of the fan.

Bushel or change the fan

B2 See B1.1 Decrease the outside

Interklima S.A

34

Very high outside

temperature

temperature and manually reset

the unit

B3

Recycle hot air to the coil

B3.1

Air temperature to the coil

higher than the appropriate

Change the position of the unit,

move away any obstruction and

manually reset the unit

B4

See A4

See B1.1 Clean coil and manually reset

the unit

B5

See a5

See B1.1 Move away any obstruction and

manually reset operate the unit

B6

Very high load

B6.1

Outlet water temperature

Return the load within allowed

operating limits and manually

reset the unit

C Cut-off by low pressure

pressostat

C1.


C1.1



E02 compressor 1

E22– compressor 2



C2

Low water supply

See C1.1 Check the water flow from the

diagram, clean water filter and

check the hydraulic circuit.

C3

Dirty exchanger’s coil

See C1.1 Clean the coil

C4

Blocked refrigerant filter

See C1.1 Change the filter of refrigerant

circuits

C5

Low condensing pressure

See C1.1 Check the fans

D

The unit does not


error code E07

D1

Sensor ST3(coil circuit1)

short-circuited or cut cable

D1.1


error display E07

Check sensor and connection.

Possible replacement

E The unit does not


error code E40

E1 Sensor ST1(otlet fan)

short-circuited or contact broken

E1.1 the compressor on the


E41

check the connection and the sensor for possible replacement

F The unit does not


error code E41

F1 Overheating of the outlet

fan or of the heating element

F1.1 the compressor on the


E41

check the fan and heating element

G The unit does not


error code E03

G1


for compressor 1

G1.1


error display E03


level

H The unit does not


error code E13

H 1


for compressor 2

H1.1


error display E13


level

Interklima S.A

35

I The unit does not


error code E04

I1


switch

I1.1


Check fan

J The unit does not


error code E24

J1


switch

J1


Check fan

K The unit does not


error code E00

Remote “ON_OFF” in OFF

position

Unit stops operating and

displays error message

E00

Remote “ON_OFF” in “ON”

position

L The unit does not

operate and there is no

error display even if the

main power switch is in

the “ON” position

The circuit breaker is in the

“OFF” position

No display on the screen Check the control circuit . Put

the circuit breaker in the “ON”

position

9.3 Table of alarms

CODE

MESSAGE

E00 Remote on-off E01 High pressure circuit 1 E02 Low pressure circuit 1 E03 Thermal switch protection compressor 1 E04 Thermal switch protection condenser fan circuit 1 E05 Anti-freeze circuit 1 E07 Probe ST3 fault E13 Thermal switch protection compressor 2 E21 High pressure circuit 2 E22 Low pressure circuit 2 E23 Thermal switch protection condenser fan circuit2 E24 Thermal switch protection condenser fan circuit 2 E25 Anti-freeze circuit 2 E31 High pressure circuit 2 on analog input E32 Low pressure circuit 2 on analog input E40 Probe ST1 fault E41 Thermal switch protection supply fan or resistance

safety thermostat

Interklima S.A

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Appendix 1 Menu Levels

Interklima S.A

37

Control probe Current alarm

Set point:

Analogue Inp.:

Alarms:

Digital input:

Op. hours:

Password:

Parameters:

Label cooling set:

Label heating set:

Input code.: -

Current alarms Code:

Input code: -

Value heating set

Value cooling set

Configuration par.:

Compressor par.:

Fan control par.:

Alarms par.:

Pump par.:

Antifreeze par.:

Defrost par.:

Par. index -

Para

Number of hours

Para

Para

Para

Para

Para

Para

Comp. hours: -

Password value

Status of digital

Val. analogue

Par. index -

Par. index -

Par. index -

Par. index -

Par. index -

Par. index -

Pump hours: Number of hours

Expansion par.: Par. index. .. Para

MDP- PACKAGED UNITS - Calor Packaged manual_eng.pdf · Description of the MDP PACKAGED unit series...

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Transcript of MDP- PACKAGED UNITS - Calor Packaged manual_eng.pdf · Description of the MDP PACKAGED unit series...