MPCA RSB GB - · PDF fileGeneral The MPCA-RSB series air-cooled water chillers consists of 8 models covering capacities from 38,4 up to 165,3 kW. It is the end result of a

PACKAGED AIRCOOLED WATER CHILLERSCOOLING ONLYOUTDOOR INSTALLATION

Cooling Capacity: 38,4kW - 165,3 kWR407c – Scroll

FeaturesOptimized design for R407c refrigerant.Casing:Galvanized steel plate with polyesteric coating.

AssemblyFully bolted/welding free.

Compressor:Hermetically sealed scroll type.

Air heat exchanger:Cross fin coil.Internally grooved copper tubes and louvered aluminium fins.

Direct drive propeler fan:Low rpm, quiet operation.

Water heat exchanger:Shell and tube type.

Safety and functional devices:- High/low pressure switch.- Linear fan speed regulation according to coil temperature.- Differential water pressostat.- Evaporator low water temperature protection.- Electronic microprosessor control with digital display.- Phase sequence-phase failure-reverse phase and voltage

monitoring device.- High and low pressure manometers.

The Interklima MPCA - RSB mediumcapacity series are packaged air cooledwater chillers for cooling applications andoutdoor installation. They are available in 8models with nominal capacities rangingfrom 38,4 to 165,3 kW.

This series is ideal in combination withInterklima fan coils or air handling units forresidences, offices, hotels, hospitals,shopping malls, shops, restaurants, etc., orfor supplying chilled water for industrialapplications.

MPCA 010-013-015-019-023-029037-046RSB

NOMENCLATURE

1 RangeS-small M-mid L-large R-screw-series

2 Packaged Chiller Air-cooledPCA

3 Model numbers010-013-015-019-023-025-029-030-031-036-037-038-042-044-046-047

4 Cool / Heat ModelR-cooling only H-heat pump

5 Compressor typeS-scroll M-tandem scroll R-reciprocatingT-twin screw

6 Refrigerant typeA-R22 B-R407c

7 Electrical Characteristic-1 Single phase -Ommited Three phase

Interklima Hydronic systemsMPCA 010-046RSB ñ R407c/Scroll 3

1. Technical Description

2. Specifications

3. Capacity Tables

4. Water Pressure Drop Curves

5. Operation Range

6. Sound Data

7. Outlook Drawings

8. Refrigerant Circuit Diagrams

9. Wiring Diagrams

10. Installation

11. Guide Specifications

Contents

GeneralThe MPCA-RSB series air-cooled water chillers consists of 8models covering capacities from 38,4 up to 165,3 kW.It is the end result of a thorough study, and accurate design byexperienced Interklima research and development teams, todevelop a mid size chiller series with compact shape, highperformance, and reliability of the highest quality standards.This series meets the highest levels of aesthetic and technicalrequirements using the latest technological innovations includingenvironmentally friendly R407c refrigerant that is Chlorine-freeand has zero ozone depletion potential. MPCA-RSB units aretherefore ideal for installation in urban environments due to theirelegant design, selected materials and low operating sound levels.

CasingAll units use metal parts that are fabricated from heavy gaugegalvanized steel sheets, formed to ensure maximum rigidity thatguarantees and preserves the units operation during the years. Afterfabrication these are degreased, phosphatised, and electrostaticallypowder coated with an epoxy-polyester RAL 9002 coating of athickness of 60-70 Ì. This fully automatic process ensures superiorcorrosion resistance against the most aggressive ambientconditions. The treatment can successfully withstand a salt spraytest of 500 hours, according to ASTM B-117.All components are assembled together using bolts thus avoiding theneed for welding which may harm the galvanization of the steel, andensures that the whole assembly can fully withstand adverseweather conditions.The compact footprint of the unit arises from detailed study anddesign by our engineering teams and results in a machine, which fitseasily in restricted areas and is simple and easy to install andmaintain, and has been designed with special fittings for easytransport and lifting.Removable side panels with special locks are used to permit accessonly to authorized personnel to internal components of the unit forinspection and maintenance. Electrical and electronic equipment andcomponents for proper unit operation are located in a weather proof(IP 55) electrical panel with access via a special key.

CompressorAll units’ use low-noise, maintenance free, Hermetic Scrollcompressors with low vibration levels, specially optimized for usewith R407c refrigerant. They are equipped with a crankcaseelectrical heater for the oil, and are internally protected againstpotential overloading or electrical spikes.The compressors are mounted on special antivibration rubbermounts to eliminate vibration from the unit’s operation.

Air heat exchanger All air heat exchangers are manufactured from high qualityseamless inner grooved copper tubes according to ASTM B-280,having an outside diameter of 9,52 mm (3/8"). The fins aremanufactured from aluminium and form the secondary extendedheat transfer surface. The fins are continuous across the heatexchanger and are fabricated in high precision dedicated presslines. The fin surface is waffle formed, so as to increase the finrigidity, and have special louvers that help increase heat transfer.The combination of internally grooved Copper-tubing and louveredfins has resulted in a heat transfer performance 30% superior tothat of a conventional coil for this particular application. Theassembly of the finned pack is achieved by mechanical expansionof the tubes in such a way as to form a perfect mechanical bondwith the fins. For this purpose, the fin holes have a peripheralextrusion (collar) of adjustable height. This extrusion serves todefine the distance between fins (and consequently the total heattransfer surface) and to ensure perfect contact of the fins to thetubes.Alternative fin materials are available upon request such as epoxy– coated aluminium and or copper for applications in especiallyaggressive environments.

Water heat exchanger All units are equipped with a Shell and Tube water –directexpansion type evaporator that has two separate cooling circuits,one for each independent refrigerant circuit. The casing is of steeland the internal tubes are of copper. There is an air vent valve,drain valve, probes for water temperature sensors, differentialpressure switch and the whole heat exchanger is wrapped in aheavy insulation material appropriate for external installation.

Air heat exchanger fansAll unit fans are of the axial type, single phase, 6 poles, internallyprotected against potential overheating, silent and suitable foroutdoor installation. Due to the sophisticated aerodynamic designof the blades and inlet cones, as well as the perfect static anddynamic balancing, their operation is completely vibration-free. Thefan-motor assembly has a protective grid against accidentalcontact with moving parts, which is designed according to ISOregulations. Fan motors are of the external rotor type,aerodynamically shaped so as not to interfere with the airflow, andhave permanently lubricated bearings that do not require servicing.Continuous linear fan speed regulation control is achievedaccording to coil temperatures including fan silent mode operation.This standard feature for Interklima MPCA units saves energy andreduces sound levels dramatically, optimizing performance.

Interklima Hydronic systemsMPCA 010-046RSB ñ R407c/Scroll4

Technical Description1.

Microprocessor controllerAll units are equipped with a sophisticated controller thatcombines intelligence with operating simplicity. The controllerconstantly monitors all machine parameters and preciselymanages among others: ñ Automatic compressor control function through return water

temperature.ñ Continuous fan speed control based on coil heat exchanger

temperature.ñ Hydraulic circuit pump control.ñ Compressor starting order control to reduce starting current.ñ Compressor operation control based on running time.ñ Compressor start up time delay function.ñ Compressor running time records.ñ Water pump running time records.ñ Over 150 programmable parameters.ñ Fan motor overload protection.ñ Auto diagnostic stop function due to low water circulation

high/low operating pressures, and compressor/pump thermaloverload.

ñ Auto diagnostic function and digital display of approximately30 possible error codes including thermistor faults.

ñ Digital displays of inlet / outlet water as well as coiltemperatures of each circuit.

ñ Remote on/ off switch.ñ Remote alarm indication capability.ñ Phase sequence - phase failure - reverse phase and voltage

monitoring.ñ Many optional control capabilities (listed in optional

accessories).

Refrigerant circuitAll units have two separate refrigerant circuits – one percompressor.Each circuit consists, depending on the size, of either a restrictoror thermal expansion valve. Other components fitted are a shut offvalve, solenoid valve (023-046), large capacity filter dryer with areplaceable core or fixed one depending on the size, sight glass(023-046), and high / low pressure manometers.Unit protection is provided by a high-pressure switch with manualreset, and a low-pressure switch with auto reset.

Optional accessories

Microprocessor controller optionsñ Remote keyboard.ñ Dynamic set point program via a 4-20ma proportional signal.ñ BMS module interface kit for Modbus connection.ñ Parallel chiller operation with standard controller for up to 2

units (4 compressors).ñ Microprocessor parameter reprogramming card.

Other unit accessories/optionñ Option of reciprocating,scroll, or tandem scroll compressor

based on specification.ñ R407c or R22 refrigerant.ñ Condenser fins made of copper or prepainted aluminum, and

Blygold treatment for corrosion protection.ñ Glycol application for low chilled water temperature down to

–5oC.ñ Pressure relief valve on compressor discharge.ñ A-meter, V-meter.ñ Hydraulic module without buffer tank.ñ Water heat exchanger antifreezing electrical heater.ñ Compressor noise reduction jacket.ñ Compressor chamber noise reduction kit.


2.Technical specifications


Type

Nominal cooling capacity

Construction

Compressor

Quantity

Capacity steps

Absorbed power

Nominal operating current

Maximum operating current

Condenser

Evaporator

Quantity

Water content

Max. Operating pressure

Connections

Nominal water flow

Water pressure drop

Minimum system water content

Fan

Quantity

Speed

Total air flow

Absorbed power



Electrical characteristics

Total absorbed power



Compressor carter

Power cables cross section per phase

Fuses

Voltage operating limits

Refrigerant circuit

Number of circuits

Expansion device

Refrigerant type

Noise level at 5m

Dimensions

Shipping weight

kW

RT

Btu/h

Material/Color

kW

A

A

l

Water side bar

Refrigerant side bar

l/h

kpa

l

rpm

m3/h

kW

A

A

kW

A

A

kW

mm2

A

V

dB(A)

Width mm

Length mm

Heigth mm

kg

MPCA-010

38.4

10.9

130.909

2

2

11.9

24.4

34

1

12.0

10

29

1 1/2"

6.605

22.0

230

2

800

16.750

1.2

5.4

6.0

13.1

29.8

40.0

0.07

16

3x50

2

52

1100

2362

1300

575

46.7

13.3

159.205

2

2

14.3

29.0

40

1

12.0

10

29

1 1/2"

8.032

32.2

280

2

800

16.750

1.2

5.4

6.0

15.5

34.4

46.0

0.14

16

3x50

2

53

1100

2362

1300

640

54.0

15.3

184.091

2

2

16.3

30.6

44

1

14.7

10

29

2 1/2"

9.288

29.1

324

2

800

15.320

1.2

5.4

6.0

17.5

36.0

50.0

0.14

16

3x63

2

53

1100

2362

1300

650

66.2

18.8

225.682

2

2

20.5

35.5

54

1

16.0

10

29

2 1/2"

11.386

36.5

397

3

800

24.200

1.8

8.1

9.0

22.3

43.6

63.0

0.14

25

3x63

2

55

1100

3168

1300

730

MPCA-013 MPCA-015 MPCA-019

Galvanized steel / Light grey-beige (RAL 9002)SCROLL

High capacity cross finned coil with internally grooved tubes and louver fins

Shell and Tube

Electric network 400 V/3Ph/50Hz

360-440V

Restrictor

R407c

2.1 MPCA 010-046RSB


Type

Nominal cooling capacity

Construction

Compressor

Quantity

Capacity steps

Absorbed power



Condenser

Evaporator

Quantity

Water content

Max. Operating pressure

Connections

Nominal water flow

Water pressure drop

Minimum system water content

Fan

Quantity

Speed

Total air flow

Absorbed power



Electrical characteristics

Total absorbed power



Compressor carter

Power cables cross section per phase

Fuses

Voltage operating limits

Refrigerant circuit

Number of circuits

Expansion device

Refrigerant type

Noise level at 5m

Dimensions

Shipping weight

kW

RT

Btu/h

Material/Color

kW

A

A

l

Water side bar

Refrigerant side bar

l/h

kpa

l

rpm

m3/h

kW

A

A

kW

A

A

kW

mm2

A

V

dB(A)

Width mm

Length mm

Heigth mm

kg

MPCA-023

80.9

23.0

275.795

2

2

24.6

43.4

64

1

18.5

10

29

2 1/2"

13.915

28.2

485

3

800

23.090

1.8

8.1

9.0

26.4

51.5

73.0

0.14

35

3x80

2

56

1100

3168

1300

750

107.3

30.5

365.795

2

2

32.5

55.3

80

1

24.0

10

29

3"

18.456

59.7

644

4

800

29.530

2.4

10.8

12.0

34.9

66.1

92.0

0.2

50

3x100

2

67

1910

2600

1650

1.150

133.6

38.0

455.455

2

2

40.3

70.1

104

1

35.1

10

29

3"

22.979

35.2

802

6

800

41.860

3.5

16.2

18.0

43.8

86.3

122.0

0.2

70

3x160

2

68

1910

3406

1650

1.320

165.3

47.0

564

2

2

48.1

83.5

124

1

51.4

10

29

DN100

28.432

24.5

992

6

800

41.860

3.5

16.2

18.0

51.6

99.7

142.0

0.2

95

3x160

2

69

1910

3406

1650

1.410

MPCA-029 MPCA-037 MPCA-046

Galvanized steel / Light grey-beige (RAL 9002)SCROLL

High capacity cross finned coil with internally grooved tubes and louver fins

Shell and Tube

Electric network 400 V/3Ph/50Hz

360-440V

Thermal expansion valve

R407c

NOTESNominal conditions are asfollows

entering/leaving chilledwater temperature 12/7oC;ambient 35oC DB

electrical installationspecifications are purelyindicative and non-binding,all connections to thesystem and the electricalinstallation must be in fullaccordance with allapplicable national and localcodes.


Capacity tables3.

MPCA-010

MPCA-013

MPCA-015

MPCA-019

MPCA-023

MPCA-029

MPCA-037

MPCA-046

Water outlet ÆC

Coolingcapacity

kW

Absorbedpower

kW

CurrentA

Absorbedpower

kW

CurrentA

Coolingcapacity

kW

Absorbedpower

kW

CurrentA

Coolingcapacity

kW

Absorbedpower

kW

CurrentA

Coolingcapacity

kW

Absorbedpower

kW

25 30 35 40 45

CurrentA

Coolingcapacity

kW

5

7

10

5

7

10

5

7

10

5

7

10

5

7

10

5

7

10

5

7

10

5

7

10

40.3

43.7

49.1

48.8

52.7

59.0

56.6

61.0

68.1

69.5

75.0

83.7

84.7

91.4

102.1

112.8

121.7

136.1

142.3

153.9

172.7

173.7

187.9

210.9

9.4

9.4

9.4

11.4

11.4

11.3

12.9

12.8

12.8

16.3

16.3

16.4

19.4

19.5

19.7

25.9

25.9

26.0

32.4

32.6

32.9

38.6

38.8

39.2

21.8

21.8

21.8

25.9

25.9

25.9

26.5

26.5

26.4

30.3

30.4

30.5

37.2

37.1

37.0

46.7

46.8

47.0

60.3

60.5

60.8

70.5

70.8

71.3

37.8

41.0

46.2

46.0

49.7

55.7

53.3

57.5

64.4

65.4

70.6

79.0

79.9

86.2

96.4

106.1

114.7

128.4

132.8

143.9

161.7

163.4

176.9

198.8

10.6

10.5

10.5

12.8

12.8

12.7

14.5

14.5

14.4

18.2

18.2

18.3

21.8

21.8

21.8

28.9

29.0

29.2

36.0

36.1

36.4

42.9

43.1

43.4

22.9

22.9

22.9

27.3

27.3

27.3

28.4

28.3

28.3

32.7

32.7

32.8

40.0

40.0

40.0

50.6

50.7

50.9

64.7

64.8

65.1

76.4

76.6

77.0

35.4

38.4

43.3

43.1

46.7

52.4

50.0

54.0

60.5

61.3

66.2

74.2

74.9

80.9

90.7

99.1

107.3

120.5

123.2

133.6

150.5

152.4

165.3

186.2

12.0

11.9

11.9

14.3

14.3

14.3

16.4

16.3

16.3

20.5

20.5

20.5

24.6

24.6

24.5

32.4

32.5

32.7

40.2

40.3

40.5

48.0

48.1

48.3

24.4

24.4

24.4

29.0

29.0

29.0

30.6

30.5

30.5

35.5

35.5

35.6

43.4

43.4

43.4

55.2

55.3

55.5

70.0

70.1

70.3

83.3

83.5

83.9

33.0

35.9

40.5

40.2

43.5

48.9

46.5

50.3

56.5

57.0

61.7

69.2

69.8

75.5

84.7

91.8

99.6

112.1

113.3

123.2

139.2

140.6

152.9

172.8

13.6

13.5

13.5

16.1

16.1

16.1

18.4

18.4

18.4

23.1

23.1

23.1

27.9

27.8

27.7

36.3

36.5

36.7

45.1

45.2

45.3

53.8

53.9

54.1

26.1

26.1

26.1

31.0

31.0

30.9

33.1

33.1

33.0

38.8

38.8

38.9

47.3

47.3

47.4

60.7

60.8

61.0

76.4

76.5

76.6

91.6

91.7

92.0

30.6

33.3

37.7

37.2

40.4

45.5

43.0

46.6

52.4

52.6

57.0

64.1

64.6

69.9

78.6

84.2

91.6

103.5

103.4

112.6

127.6

127.7

139.5

158.5

15.4

15.4

15.3

18.0

18.0

18.1

20.6

20.7

20.7

26.0

26.0

26.1

31.5

31.5

31.4

40.9

41.0

41.2

50.9

50.9

50.9

60.4

60.5

60.6

28.3

28.3

28.2

33.3

33.3

33.3

36.0

36.0

36.0

42.6

42.7

42.8

51.9

51.9

52.0

67.2

67.2

67.4

84.1

84.1

84.2

101.2

101.3

101.5

Type

Ambient temperature oC

Cooling capacity table for MPCA 010-046RSB

NOTESBold values show nominal cooling capacities.Absorbed power and current refers to the compressor.Above figures are valid for water ¢t = 5oC.


90100

80

70

60

80 100x103706050

50

40

40

54 1010

15

15

20

20

I/h30

1

30kpa

PD

WF

2 3 4 5 6 7

Water pressure drop curves4.

MPCA 010-046RSB

NOTESPD: pressure dropWF: water flow rate1. MPCA 010-013RSB2. MPCA 015RSB3. MPCA 019RSB4. MPCA 023RSB5. MPCA 029RSB6. MPCA 037RSB7. MPCA 046RSB

% ETHYLENE GLYCOL BY VOLUME

Freezing point

Output duty

Input pow er

Equivalent Flow rate

Equivalent Pressure drop

ETHYLENE GLYCOL CORRECTION FACTORSUNIT 10oC

kW

kW

L/H

kPa

-4

0,99

0,99

1,02

1,06

20

-9

0,98

0,98

1,04

1,12

30

-15

0,97

0,98

1,08

1,18

40

-23

0,96

0,97

1,13

1,25


Operation range5.

Sound data6.

45

-5

0

6 15

Outdoor Temperature ( CDB)O

Leaving water temperature(oC)

4

47

NOTESProtect the water circuit against freezing

- The accompanying operating limits are for general guidance only.It may be possible for certain units to operate outside the confinesof the graph. Please contact Interklima if further clarification isrequired.

- For operation with leaving water temperature below 6 oC it isrequired to confirm with Interklima at the time of order and theaddition of glycol into the system.

MPCA-010

MPCA-013

MPCA-015

MPCA-019

MPCA-023

MPCA-029

MPCA-037

MPCA-046

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

Power

Pressure @1 m

Pressure @10 m

dB(A)

74

66

46

75

67

47

75

67

47

77

69

49

78

70

50

89

81

61

90

82

62

91

83

63

63

78

70

50

78

70

50

78

70

50

79

71

51

79

71

51

80

72

52

81

73

53

81

73

53

125

70

62

42

70

62

42

70

62

42

72

64

44

73

65

45

83

75

55

84

76

56

85

77

57

250

71

63

43

72

64

44

72

64

44

72

64

44

72

64

44

79

71

51

80

72

52

81

73

53

500

71

63

43

72

64

44

72

64

44

73

65

45

73

65

45

79

71

51

79

71

51

81

73

53

1000

71

63

43

72

64

44

72

64

44

72

64

44

72

64

44

85

77

57

86

78

58

87

79

59

2000

64

56

36

65

57

37

65

57

37

66

58

38

65

57

37

79

71

51

80

72

52

81

73

53

4000

56

48

28

58

50

30

58

50

30

58

50

30

59

51

31

74

66

46

74

66

46

74

66

46

8000

47

39

19

49

41

21

49

41

21

50

42

22

50

42

22

66

58

38

67

59

39

66

58

38

Type Octave band center frequency (Hz)

C

B A

275175

11001260

1300

134

2362

1300

1594

TYPE A B CMPCA-010 1190 655 230MPCA-013 1190 655 230 MPCA-015 1030 390 230

275175

11001260

1300

134

1300

1100

3168

3168

AB

C

TYPE A B CMPCA-019 1190 1096 244MPCA-023 1380 840 244


Outlook drawings7.

7.1 MPCA 010-015RSB

7.2 MPCA 019-023RSB

275175

19102070

1650

134

244

265 11702600

1650

275175

19102070

1650

134

A

3406

C

1910

B

TYPE A B CMPCA-037 1530 608 244MPCA-046 2030 350 280


7.3 MPCA 029RSB

7.4 MPCA 037-046RSB

3

4

52

4

1 1

5

3

3

4

6

5.1

5.12

6

4

1 1

3


8.1 MPCA 010-019RSB

8.2 MPCA 023RSB

Refrigerant circuit diagrams8.

NOTES1. Compressor2. Shell and tube heat exchanger3. Condenser coil4. Filter dryer5. Expansion device (restrictor)5.1 Expansion device (Thermalexpansion valve)6. Solenoid valve


338

1 1

4

7

6

5.1

5.1

2

4

8

67

8.3 MPCA 029-046RSB

NOTES1. Compressor2. Shell and tube heat exchanger3. Condenser coil4. Filter dryer5. Expansion device (restrictor)5.1 Expansion device (Thermal expansion valve)6. Solenoid valve7. Sight glass8. Shut off valves


Wiring diagrams9.

H

T

PUM

P TH

ERM

AL

CP

N N

A AL AL

FROM POWER CIRCUIT

S4

4

S2S3123S1

S

ST5ID6

ST6ID7

TF1

TC2T

TF2

F1

TT

F2

C2

+S

GNDID10

NCID9

GNDTK2

AN212

SW

S S

ST3ID3 ID2

ST2 ST1ID1

S

HP1

LP1

HLH

NCNC

ENERGY 400

-

P2 P1 P1

9875 6

Ltc1,2

10

F

FLOW

SW

ITCH

ID11ID8

Off

ON

ST4ID4ID5

GNDALL12AC12AC12DC TK1

GND

LP2

TC1

LT

P2C1

4321

F1

24

LF

SF

33 34

VC

TRANSFORMER

12V

F2

F1FF

EMI FILTER

220V

REM

OTE

ON-O

FF

L1

L2

L3

N

CC2CC1C2

FM2

C1HP

2

CONTROL CIRCUIT

FM1

9.1 MPCA 010-015RSB

CC2CC1

Sv1 Sv2

N N

SV2SV1

T

F3

TF3

C3

FM3

N

H

T

PUM

P TH

ERM

AL

CP

N N

A AL AL

FROM POWER CIRCUIT

S4

4

S2S3

123

S1

S

ST5ID6

ST6ID7

TF1

TC2T

TF2

F1

TT

F2

C2

+S

GNDID10

NCID9

GNDTK2

AN212

SW

S S

ST3ID3 ID2

ST2 ST1ID1

S

HP1

LP1

HLH

NCNC

ENERGY 400

-

P2 P1 P1

9875 6

Ltc1,2

10

F

FLOW

SW

ITCH

ID11ID8

Off

ON

ST4ID4ID5

GNDALL12AC12AC12DC TK1

GND

LP2

TC1

LT

P2C1

4321

F1

24

LF

SF33 34

VC

TRANSFORMER

12V

F2

F1FF

EMI FILTER

220V

REM

OTE

ON-O

FF

L1

L2

L3

N

CC2CC1C2

FM2

C1

HP2

CONTROL CIRCUIT

FM1

9.2 MPCA 019-023RSB


N

FM1

T

F3

T

F4

C

LF1

C

FM2

N

FM4

C

LF2

C

FM3

F2

T

F1

T

C

H

P

T

ENER

GY 4

00

N

L3L2

L1

ALAL

NN

LP1

L

P1P2

L

S

4

SV1

SV1 SV2

SV2

F1

12V

F2 VC

CC1

P1

H

LP2

TC1

TC2

9 105 6 873 421

S4S1S2S3

S

12

SS

3

ON

FF2

EMI

F1 24

FILTER

3433

CONTROL

OFF

ST5ID6ID7

ST6ID8ID11

ID9NC

ID10GND

TK2GND

12DCALL

12AC12AC

_

24F1 CONTROL

33 34

FF1

EMI

FROM POWER CIRCUIT

+

S

12AC12AC

ALL12DC

GNDTK1

GNDID5

ST4ID4

ST3ID3

ST2ID2 ID1

ST1

220V F

SW

SF1 SF2

CC1

CC2

A

CONTROL CIRCUIT

CC2

HP1

HP2

H

P2

T

C2C1

T

Ltc1 Ltc2

REM

OTE

ON-O

FF

FILTER

9.3 MPCA 029RSB

F3

T

F1

T

T

F2F5

T

T

F4

T

F6N

FM6FM5FM4

LF2 NLF1

FM1 FM2 FM3

C

H

P

T

ENER

GY 4

00

N

L3L2

L1

ALAL

NN

LP1

L

P1P2

L

S

4

SV1

SV1 SV2

SV2

F1

12V

F2 VC

CC1

P1

H

LP2

TC1

TC2

9 105 6 873 421

S4S1S2S3

S

12

SS

3

ON

FF2

EMI

F1 24

FILTER

3433

CONTROL

OFF

ST5ID6ID7

ST6ID8ID11

ID9NC

ID10GND

TK2GND

12DCALL

12AC12AC

_

24F1 CONTROL

33 34

FF1

EMI

FROM POWER CIRCUIT

+

S

12AC12AC

ALL12DC

GNDTK1

GNDID5

ST4ID4

ST3ID3

ST2ID2 ID1

ST1

220V F

SW

SF1 SF2

CC1

CC2

A

CONTROL CIRCUIT

CC2

HP1

HP2

H

P2

T

C2C1

T

Ltc1 Ltc2

REM

OTE

ON-O

FF

FILTER

9.4 MPCA 037-046RSB

(OPT

IONA

L)CO

MM

AND

220

V FO

R AN

TI F

REEZ

E H

EATE

RS

220

V AC

HPC T

PUM

P CO

MM

AND

(220

V A

C)

PUM

P TH

ERM

AL P

ROTE

CTIO

N

P2 P2LC1F2 T HT C2 LP1 P1 HF OFF

ONSW 2SALAL 1 S SS 3 T4 F1 T T F3 T F4

CIRC

UIT

1 LI

QUI

D SO

LENO

ID V

ALVE

LOW

PRE

SSUR

E PR

ESSO

STAT

CIR

CUIT

2

HIG

H P

RESS

URE

PRES

SOST

AT C

IRCU

IT 2

LOW

PRE

SSUR

E PR

ESSO

STAT

CIR

CUIT

1

COM

PRES

SOR

2 TH

ERM

AL P

ROTE

CTIO

N

CIRC

UIT

2 CO

IL T

EMPE

RATU

RE S

ENSO

R (S

T6)

220

V FO

R T

HER

MAL

PRO

TECT

ION

COM

P. 1

ENTE

RING

WAT

ER T

EMP.

SENS

OR

(ST1

)

FAN

1 TH

ERM

AL P

ROTE

CTIO

N

T F5FA

N 5

THER

MAL

PRO

TECT

ION

T F6FA

N 6

THER

MAL

PRO

TECT

ION

FAN

3 TH

ERM

AL P

ROTE

CTIO

N

COM

PRES

SOR

1 TH

ERM

AL P

ROTE

CTIO

N

HIG

H P

RESS

URE

PRES

SOST

AT C

IRCU

IT 1

LEAV

ING

WAT

ER T

EMP.

SEN

SOR

(ST2

)

CIRC

UIT

1 CO

IL T

EMPE

RATU

RE S

ENSO

R (S

T3)

FAN

2 TH

ERM

AL P

ROTE

CTIO

N

DIFF

EREN

TIAL

WAT

ER P

RESS

URE

SWIT

CH

REM

OTE

SW

ITCH

ON-

OFF

ALAR

M S

IGNA

L (N

.O. C

ONT

ACT)

FAN

4 TH

ERM

AL P

ROTE

CTIO

N

220

V FO

R T

HER

MAL

PRO

TECT

ION

COM

P. 2

CIRC

UIT

2 LI

QUI

D SO

LENO

ID V

ALVE

CRAN

KCAS

E H

EATE

R CO

MPR

ESSO

R 1

CRAN

KCAS

E H

EATE

R CO

MPR

ESSO

R 2

C-P PUMP COMMAND (220 V AC)T-H PUMP THERMAL PROTECTION (DRY CONTACT)F-SW DIFF. WATER PRESSURE SWITCHON-OFF REMOTE ON-OFF SWITCH (DRY CONTACT)AL-AL ALARM SIGNAL (DRY CONTACT)

CH1

LTC1

SV1

SV1 SV2

CH2

A

LTC2

SV2

F1 CONTROL CIRCUIT BREAKERF2 LOW VOLTAGE (12 V) CIRCUIT BREAKERFF1 CIRCUIT 1 FANS CIRCUIT BREAKERFF2 CIRCUIT 2 FANS CIRCUIT BREAKERSF1,2 CONDENSER FANS SPEED CONTROLERSVC VOLTAGE SURVEYOR CC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORSV1 CIRCUIT 1 LIQUID LINE SOLENOID VALVESV2 CIRCUIT 2 LIQUID LINE SOLENOID VALVE TC1 COMPRESSOR 1 THERMAL PROTECTIONTC2 COMPRESSOR 2 THERMAL PROTECTIONTF CONDENSER FANS THERMAL PROTECTIONHP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2S1 ENTERING WATER TEMPERATURE SENSORS2 LEAVING WATER TEMPERATURE SENSORS3 CIRCUIT 1 COIL TEMPERATURE SENSORS4 CIRCUIT 2 COIL TEMPERATURE SENSORTR1 TRANSFORMER 220/12V AC

FM1 CONDENSER FAN 1FM2 CONDENSER FAN 3FM3 CONDENSER FAN 3FM4 CONDENSER FAN 4FM5 CONDENSER FAN 5FM6 CONDENSER FAN 6Sª1 GENERAL CIRCUIT BREAKERCª1 COMPRESSOR 1Cª2 COMPRESSOR 2FC1 COMPRESSOR 1 CIRCUIT BREAKERFC2 COMPRESSOR 2 CIRCUIT BREAKERFCH COMPRESSORS CRANKCASE HEATERS CIRCUIT BREAKERCH1 CRANKCASE HEATER COMPRESSOR 1CH2 CRANKCASE HEATER COMPRESSOR 2LTC1 220 V FOR COMP. 1 THERMAL PROTECTIONLTC2 220 V FOR COMP. 2 THERMAL PROTECTION

TC P H

220

V AC SW ON OF

FF AL AL

ALARMLEGEND

FIELD CONNECTIONS

E00: REMOTE ON/OFF IN OFF POSITIONE01: HIGH PRESSURE CIRCUIT 1 E02: LOW PRESSURE CIRCUIT 1∂03: THERMAL PROTECTION COMP.1E04: THERMAL PROTECTION SWITCH COND.FANS E06: PROBE S2 FAULT (WATER OUTLET) E07: PROBE S3 FAULT (COIL 1)∂23: THERMAL PROTECTION SWITCH COMPRESSOR 2E21: HIGH PRESSURE CIRCUIT 2 E22: LOW PRESSURE CIRCUIT 2E27: PROBE S6 FAULT (COIL 2)E40: PROBE S1 FAULT (WATER INLET)E41: DIFFERENTIAL WATER PRESSURE SWITCH


NN

W1 V1 U1 U2 V2 W2

CH1 CH2

POWER CIRCUITL1

SM1

L2

L3

Mp

PE FC1

CC1 CC2

FC2

CM1 CM2

FCH1 FCH2

CC1 CC2

CH1 CH2

VC

9.5 MPCA 010-046RSB

10.2 Centre of gravity

ªPCA 010-015RSB

550820


Installation10.

The MPCA-RSB unit should be installed in a location that meetsthe following requirements:1. The foundation is strong enough to support the weight of the

unit, and the floor is flat to prevent vibration and noisegeneration.

2. The space around the unit is adequate for servicing and theminimum space air inlet and air outlet is available. If severalunits are being installed side by side in parallel, the minimumservice space between them must be taken into account.

3. There is no danger of fire due to leakage of inflammable gas.4. Ensure that water cannot cause any damage to the location in

case it drips out the unit.

5. Make sure that the air inlet and outlet of the unit are notpositioned towards the main wind direction. Frontal wind shalldisturb the operation of the unit. If necessary, use awindscreen to block the wind.

6. In heavy snowfall areas, select an installation site where snowshall not affect operation of the unit.

7. Make sure that the unit can be fixed directly on concrete.8. In order to avoid the transmission of vibration from the

operating unit to its carrying structure, the use of antivibrationmaterial to install under the supports of the unit isrecommended. It is suggested to install a rubber pad betweenthe points of support and the base of the unit, or springantivibration mounts under each point of support of the unit.

10.1 Selection of location - service space

2000mm

1000mm

4000mm

500mm

2000mm


ªPCA 019-023RSB

5501100

ªPCA 029RSB

9551200

ªPCA 037-046RSB

9551350


3

1 2 6

14

13

7

15

5

5

11

12

5

8

8

5

109

1621

3

4

4

7

55

MPCA

Example with one central pump

ñ All field connections must be carried out by a licensed technicianand must comply with the applicable local and national codes

ñ Evaporator water connections should be made in accordancewith the unit outlook respecting the water inlet – and outlets

ñ Water piping to be arranged so that the circulating pumpdischarges directly into the evaporator

ñ Install a flow switch or water differential pressostat (standardcomponent) in the water outlet piping to prevent the unit fromoperating at a water flow, which is too low. A terminal is providedin the switch box for the electrical connection of the flow switchin the control circuit.

ñ To avoid erosion, it is recommended to install a filter in thewater inlet pipe.

ñ It is essential to install a thermometer in the water inlet/ outletpipe to check temperatures.

ñ Provide heat insulation with suitable vapour barrier around thechilled water piping to prevent condensation and capacity loss.

ñ Provide drain connections at all low points of the system topermit complete drainage for maintenance and/ or shutdown.

ñ Air vents should be provided at all high points in the systemlocated where they are easily accessible for servicing. Thewater inlet pipe is specially designed to obtain a complete airpurge of the evaporator.

ñ Install an expansion tank on the suction side of the water pumpso that the water pressure on the pump suction shall be positive.

ñ To avoid frequent on/off operation of the compressor, aminimum water volume is required in the system (table 10.4).

ñ To assure proper operation of the unit, the water flow throughthe evaporator must be within the specified limits in (table10.4).

10.3 Recomendations concerning the hydraulic circuit


3

1 25 6

5

14

13

7

15

1112

88

5

10916

21

3

4

4

75 5

5 5

56,1

6,1

6,1

5

5

55

5

5

5

MPCA

Example with internal loop pump and external zone pumps

NOTES1. Flexible2. Thermometer3. Manometer4. Air vent5. Shut off valve6. Pump (primary circuit)6.1 Pump (secondary circuit)7. Water filter8. Drainage9. Flow switch (optional)10. Balancing valve11. Buffer tank12. Electric resistance13. Automatic make up water valve14. Expansion membrane15. Check valve16. Safety valve


3,5-4 bar

17-19 bar

4-5 bar

21-23 bar

5,5-6 bar

24-26 bar

low pressure

high pressure

Minimum(outdoor temp. 15ÔCDB) (leaving water temp 6ÔC)

Nominal(outdoor temp. 35 CDB)

(leaving water temp, 7ÔC)

Maximum(outdoor temp. 38ÔCDB)

(leaving water temp, 25ÔC)

Cooling mode(region)

To ensure proper operation of the unit, a minimum water volumeis required in the system and the water flow must be within theoperation range as specified in the table.

It is important to check the high and low pressure of therefrigerant circuit to ensure the proper operation of the unitand to guarantee that the rated output shall be obtained.

Attention:The pressures measured shall vary between a maximum andminimum value, depending on the water and ambienttemperatures at the moment of measurement.

10.4 Watercharge, flow and quality

10.5 Operating pressure of the refrigerant circuit

230

280

324

397

485

644

802

992

MPCA-010RSB

MPCA-013RSB

MPCA-015RSB

MPCA-019RSB

MPCA-023RSB

MPCA-029RSB

MPCA-037RSB

MPCA-046RSB

Minimumwater

volume (l)

3137

3815

4412

5409

6610

8766

10915

13505

Minimumwater flow

(l/h)

6605

8032

9288

11386

13915

18456

22979

28432

Nominalwater flow

(l/h)

8256

10041

11610

14233

17394

23070

28724

35540

Maximumwater flow

(l/h)

Items to be controlled:

PH AT 25ÔC

∂lectrical conduct (mS/m) at 25ÔC

Chloride ion (mg CI-/I)

Sulfate ion (mg SO 2/4/I

M-alkalinity (ph 4.8) (mg SO3/I)

Total hardness (mg CaCO3/I )

Calcium hardness (mg CaCO3/I)

Silica ion (mg SiO2/I

Items to be referred to:

Iron (mg Fe/I)

Copper (mg Cu/I)

Sulfide ion (mg S2-/I)

Amonium ion (mg NH+4/I

Remaining chloride (mg CI/I)

Free carbide (mg SO2/I)

Stability index

6.8 - 8.0

below 30

below 50

below 50

below 50

below 70

below 50

below 30

below 1.0

below 1.0

Not detectable

below 0.3

below 0.25

below 0.4

-

6.8 - 8.0

below 30

below 200

below 50

below 50

below 70

below 50

below 30

below 0.3

below 0.1

Not detectable

below 0.1

below 0.3

below 4.0

-

7.0 - 8.0

below 30

below 30

below 30

below 50

below 70

below 50

below 30

below 1.0

below 1.0

Not detectable

below 0.1

below 0.1

below 0.4

-

7.0 - 8.0

below 30

below 30

below 30

below 50

below 70

below 50

below 30

below 0.3

below 1.0

Not detectable

below 0.1

below 0.3

below 4.0

-

ItemsCirculatingwater 20C Supply water Circulating

water 20C-60C Supply water

Tendencyif out of criteria

Evaporator water Heated water

corrosion + scale

corrosion + scale

corrosion

corrosion

scale

scale

scale

scale

corrosion + scale

corrosion

corrosion

corrosion

corrosion

corrosion

corrosion + scale

Be sure the water quality is in accordance with the specificationsbelow

NOTESThe above tables are purelyindicative and non-binding

User interface MPCA 010-046RSBThe interface on the front panel can be used to carry out all theoperations connected to the use of the instrument, and inparticular to:

Set operating mode Check the state of resourcesRespond to alarm situations

10.6.1 KeysSelects operating mode (Heating/defrost refersonly to MPCA-H series):

If the heating mode is enabled, each time thekey is pressed the following sequence occurs:Stand-by Cooling Heating Stand by

If cooling mode is enabled:Heating Stand-by Cooling Heating Stand byIn menu mode, this key acts as a SCROLL UPor UP key (increasing value).

Resets alarms, and turns the instrument onand off. Press once to reset all manually resetalarms not currently active.

Hold down the key for 2 seconds to turn theinstrument from on to off or vice versa. When it isoff, only the decimal point remains on the display.In menu mode this key acts as a SCROLL DOWNor DOWN key (decreasing value).

Pressing the “mode” and “on-off” keys at thesame time.

If you press both keys at the same time andthen release within 2 seconds, you shall moveone level deeper in the display menu. If you press both keys for more than 2 secondsyou shall move one level up.If you are currently viewing the lowest level inthe menu and you press both keys and releasewithin 2 seconds, you shall go up one level.

10.6.2.2 LedLed 1 compressor 1.ON if compressor 1 is activeOFF if compressor 1 is offRapid BLINK if safety timing is in progressSlow BLINK if compressor is currently set to defrost (heatpump version)

Led 2 compressor 1.ON if power step 2 is activeOFF if power step 2 is not activeRapid BLINK if safety timing is in progresslow BLINK if step 2 is currently defrosting

Led 3 compressor 2.ON if power step 3 is active (compressor 2).OFF if power step 3 is not activeRapid BLINK if safety timing is in progressSlow BLINK if step 3 is defrosting

Led 4 compressor 2.ON if power step 4 is activeOFF if power step 4 is not activeRapid BLINK if safety timing is in progressSlow BLINK if step 4 is defrosting

10.6.2 Displays10.6.2.1 DisplayNormal display shows:

ñ Regulation temperature in tenths of degreescelsius with a decimal point, or in degreesfahrenheit without a decimal point.

ñ The alarm code, if at least one alarm is active. Ifmultiple alarms are active, the one with greaterpriority shall be displayed, according to the Tableof Alarms.

ñ If temperature control is not analogue anddepends on the status of a digital input (ST1 orST2 configured as digital inputs), the “On” or“Off” label shall be displayed, depending onwhether temperature control is active or not.

ñ When in menu mode, the display depends on thecurrent position; labels and codes are used tohelp the user identify the current function.

ñ Decimal point: when displaying hours of operation,indicates that the value must be multiplied x 100.

10.6 Digital controler

Front panel of the instrument

1 2

3 4



24

S + -

S + -

26

25

PCB CONTROL BOARD

BACK VIEW REMOTE

The remote keyboard on the display is an exact copy of theinformation displayed on the instrument, with the same leds;

Connection with the controller is illustrated below:

It performs exactly the same functions as those described in thedisplay section.The only difference is in use of the UP and DOWNkeys (to increase and decrease value), which are separate fromthe MODE and ON/OFF keys.

10.7 Remote keyboardDefrost led (heat pump version)ON if defrosting is in progressOFF if defrosting is disabled or has been completedBLINK if timing is in progress (defrost interval)

Electrical heater/boiler ledON if the internal anti-freeze electrical heater or boiler is onOFF if the internal anti-freeze electrical heater or boiler is off

Heating led (heat pump version)ON if the device is in heating mode

Cooling ledON if the controller is in cooling mode

If neither the HEATING led nor the COOLING led is on, thecontroller is in STAND-BY mode

Guide specifications


The supply, transport to jobsite, installation, commissioning andstart up of an air cooled water chiller with the following technicalcharacteristics.The unit shall be factory assembled, charged with R407crefrigerant and factory tested.The capacity of the unit shall be no less than: kW

Ambient air temperature (DB) ÆCEntering water temperature ÆCLeaving water temperature ÆC

The unit shall operate unhindered within 6 to 15ÆC water outlettemperature, 3.5 to 7ÆC water temperature difference and 5 up to45ÆC ambient air temperature.The structural requirements shall be the following:

UNIT HOUSINGThe unit housing shall be fabricated from heavy gauge galvanizedsteel sheets, formed to ensure maximum rigidity that shallguarantee and preserve the unit operation during the years. Allmetal parts after fabrication shall be degreased phosphatized, andelectrostatically powder coated with epoxy- polyester RAL 9002coating of a thickness of 60-70 m. The corrosion resistancetreatment must successfully withstand a salt spray test of 500hours, according to ASTM B- 117. All components shall beassembled exclusively together using bolts, without welding. Theunit shall have removable access panels, designed in such amanner as to permit easy access to internal compartments onlyby authorized personnel. Electrical and electronic equipment andcomponents for proper unit operation shall be located in a weatherproof (IP 55) electrical panel with access via a special key.

COMPRESSORShall be of the hermetically sealed scroll type, with low noise andvibration levels, specially optimized for use with R407c refrigerant.They shall be equipped with a crank case electrical heater, toseparate refrigerant and oil when the unit is not operating. Theyshall also include internal protection against overloading orelectrical spikes.The compressor shall be mounted on special anti vibration rubbermounts to absorb and eliminate any vibration that can begenerated from the unit base.

AIR HEAT EXCHANGERThe air hear exchangers shall be manufactured from seamlesscopper tubes and an outside diameter of 9.52mm (3/8'') of high

quality according to ASTM B 280. The tubes shall be internallygrooved to achieve optimized heat transfer between refrigerantand tube. The fins shall be manufactured from aluminium. The finsshall be continuous across the heat exchanger and the fin surfaceshall be waffle formed and louvered so as to increase the finrigidity and heat transfer. The combination of internally groovedcopper tubing and louvered fins must result in a heat transferperformance 30% superior to that of a conventional coil.The assembly of the finned pack shall be achieved by mechanicalexpansion in such a way as to form a perfect mechanical bondwith the fins. For this purpose, the fin holes shall have a peripheralextrusion (collar).

WATER HEAT EXCHANGERAll units shall be equipped with a Shell and Tube water –directexpansion type evaporator that has two separate cooling circuits,one for each independent refrigerant circuit. The casing shall be ofsteel and the internal tubes of copper. There shall be an air ventvalve, drain valve, probes for water temperature sensors,differential pressure switch and the whole heat exchanger shall bewrapped in a heavy insulation material appropriate for externalinstallation.

AIR HEAT EXCHANGER FANS The unit shall be equipped with axial type fans, single phase, and6 poles, internally protected against potential overheating,noiseless and suitable for outdoor installation. The design of theblades and inlet cones shall be aerodynamic, and the fan motorassembly shall be perfectly statically and dynamically balancedallowing a completely vibration free operation. The fan motorassembly shall have a protective grid against accidental contactwith moving parts according to ISO. The fan motor shall be of theexternal rotor type with permanently lubricated bearings that donot require servicing. The motor shall be aerodynamically shapedso as not to interfere with the airflow. The unit shall be equippedwith a continuous linear fan speed regulation control according tocoil temperature.

CONTROL SYSTEM WITH MICROPROCESSOR CONTROLLER The control system shall possess a sophisticated controller thatshall constantly monitor all machine parameters and particularlymanage among others: ñ Automatic compressor control function through return water

temperature.ñ Continuous fan speed control based on coil heat exchanger

temperature.

11.

MPCA 010-046RSB

ñ Hydraulic circuit pump control.ñ Compressor start up time control function.ñ Compressor running time records.ñ Over 150 programmable parameters. ñ Fan motors overload protection.ñ Auto diagnostic stop function due to low water circulation,

high / low operating pressures and compressor thermal overload.

ñ Auto diagnostic function and digital display of approximately 30 possible error codes including thermistor faults.

ñ Digital displays of inlet/outlet as well as condensing temperatures of each circuit.

ñ Phase sequence phase failure - reverse phase and voltage monitoring device.

ñ Remote cool/ heat and on / off selection.ñ Various other optional control capabilities (listed in options).

REFRIGERANT CIRCUITThe unit shall have two refrigerant circuits one per compressor.The circuits depanding the size shall consist of a filter dryer withreplacable core, expansion device, solenoid valve, sight glass,shut off valves, high pressure switch with manual reset and a lowpressure switch with auto reset.

NOTEThe consultant may if required add the below mentioned optionalaccessories / functions.ñ Remote keyboard.ñ Dynamic set point program via a 4 20 mA proportional signal.ñ BMS module interface kit for modbus connection.ñ Parallel chiller operation with more than 2 units with optional

controller. ñ Microprocessor parameters reprogramming card.ñ Condenser fins made of prepainted aluminum or copper, and

blygold treatment for additional corrosion protection.ñ Shell and tube exchanger-freezing protection for low chilled

water temperature controlled by microprocessor.ñ Glycol for low chilled water temperatures.ñ Pressure relief valve on compressor discharge.ñ Hydraulic module without buffer tank.ñ Compressor chamber noise reduction.ñ Compressor noise reduction jacket.


Products are manufactured in ISO 9001:2000certified factories. ISO 9001:2000 pertains to quality

assurance regarding design, development,manufacturing and installation of products

as well as to services related to the product.

INTERKLIMA PRODUCTS ARE DISTRIBUTED BY:

EG

B-B

-3-1

-05/

06

Specifications subject to change without notice

Interklima units comply with the European regulations thatguarantee the safety of the product

Engineering Data 2006

Documents

MPCA RSB GB - · PDF fileGeneral The MPCA-RSB series air-cooled water chillers consists of 8 models covering capacities from 38,4 up to 165,3 kW. It is the end result of a