SPCA 001-010RSB

SPCA 001-010RSB 

PACKAGED AIR COOLED WATER CHILLER 

COOLING ONLY 

OUTDOOR INSTALLATION 

WITH BUILT IN HYDRAULIC MODULE 

Cooling Capacity: 5,8kW - 31,8kW 

R407c - Scroll 

The Interklima SPCA - RSB small capacity 

series are packaged air cooled water chillers 

for cooling applications and outdoor 

installation. They are available in 9 models 

with nominal capacities ranging from 5,8 to 

31,8 kW. 

This series is ideal in combination with 

Interklima fan coils or air handing units for 

residential and light commercial applications 

or for supplying chilled water for small 

industrial applications. 

Features 

Optimized design for R407c refrigerant. 

Casing: 

galvanized steel plate with polyesteric coating. 

Assembly 

fully bolted/welding free. 

Built in complete hydraulic module. 

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 

Plate heat exchanger. 

Safety and functional devices 

- high/low pressure switch. 

- linear fan speed regulation according to coil temperature. 

- differential water pressostat. 

- plate heat exchanger low temperature protection. 

- electronic microprosessor control with digital display.

NOMENCLATURE 

1 Range 

S-small M-mid L-large R-screw-series 

2 Packaged Chiller Air-cooled 

PCA 

3 Model number 

001-002-003-004-005-006-007-010 

4 Cool / Heat Model 

R-cooling only H-heat pump 

5 Compressor type 

S-scroll M-tandem scroll R-reciprocating 

T-twin screw 

6 Refrigerant type 

A-R22 B-R407c 

7 Electrical Characteristic 

-1 Single phase -Ommited Three phase

Contents 

1.Technical Description 

2. Specifications 

3. Capacity Tables 

4. Available External Water 

Pressure Curves 

5. Operation Range 

6. Sound Data 

7. Outlook Drawings 

8. Refrigerant Circuit Diagrams 

9. Wiring Diagrams 

10. Installation 

11. Guide Specifications 

Interklima Hydronic systems 

SPCA 001-010RSB ñ R407c/Scroll 3

1. Technical Description 

General 

The SPCA-RSB series air-cooled water chillers consists of 9 

models covering capacities from 5,8 up to 31,8kW. 

It is the end result of a thorough study, and accurate design by 

experienced Interklima research and development teams, to 

develop a small size chiller series with compact shape, high 

performance, and reliability of the highest quality standards. 

This series meets the highest levels of aesthetic and technical 

requirements using the latest technological innovations including 

environmentally friendly R407c refrigerant that is Chlorine-free 

and has zero ozone depletion potential. SPCA-RSB units are 

therefore ideal for installation in urban environments due to their 

elegant design, selected materials and low operating sound levels. 

Casing 

All units use metal parts fabricated from heavy gauge galvanized 

steel sheets, formed to ensure maximum rigidity that guarantees and 

preserves the units operation during the years. After fabrication metal 

parts are degreased, phosphatised, and electrostatically powder 

coated with an epoxy-polyester RAL 9002 coating of a thickness of 

60-70Ì. This fully automatic process ensures superior corrosion 

resistance against the most aggressive ambient conditions. The 

treatment can successfully withstand a salt spray test of 500 hours, 

according to ASTM B-117. 

All components are assembled together using bolts thus avoiding 

the need for welding which may harm the galvanization of the 

steel, and ensures that the whole assembly can fully withstand 

adverse weather conditions. 

The compact footprint of the unit arises from detailed study and 

design by our engineering teams and results in a machine, which 

fits easily in restricted areas and is simple and easy to install and 

maintain, and has been designed with special fittings for easy 

transport and lifting. 

Removable panels with special locks are used to permit access only 

to authorized personnel to internal components of the unit for 

inspection and maintenance. 

Compressor 

All units' use low-noise, maintenance free, Hermetic Scroll 

compressor with low vibration levels, specially optimized for use 

with R407c refrigerant, selected from world class suppliers. 

They are equipped with a crankcase electrical heater for the oil, 

and are internally protected against potential overloading or 

electrical spikes. 

The compressors are mounted on special antivibration rubber 

mounts to eliminate vibration from the unit's operation. 

Hydraulic kit 

All units are equipped, as standard, with a complete hydraulic kit 

comprising of a circulating pump, buffer and expansion tank, 

automatic fill and make up water valve with manometer, safety 

valve, airvent, water filter, differential water pressure switch, and 

evacuation valve. 

Condenser coil 

All unit air heat exchangers are manufactured from high quality inner 

grooved seamless copper tubes according to ASTM B-280, having 

an outside diameter of 9,52 mm (3/8"). The fins are manufactured 

from aluminium and form the secondary extended heat transfer 

surface. The fins are continuous across the heat exchanger and are 

fabricated in high precision dedicated press lines. The fin surface is 

waffle formed, so as to increase the fin rigidity, and have special 

louvers that help increase heat transfer. The combination of 

internally grooved Copper-tubing and louvered fins has resulted in a 

heat transfer performance 30% superior to that of a conventional 

coil for this particular application. The assembly of the finned pack 

is achieved by mechanical expansion of the tubes in such a way as 

to form a perfect mechanical bond with the fins. For this purpose, 

the fin holes have a peripheral extrusion (collar) of adjustable height. 

This extrusion serves to define the distance between fins (and 

consequently the total heat transfer surface) and to ensure perfect 

contact of the fins to the tubes. 

Alternative fin materials are available upon request such as epoxy 

- coated aluminium or copper for applications in especially 

aggressive environments. 

Evaporator 

All units are equiped with a water - refrigerant Plate Heat 

Exchanger, selected from world class manufacturers. 

It is made of stainless steel plates (AISI 3161.4401) specially 

formed to achieved a large heat transfer surface and assembled 

by means of an automatic brazing proccess under vaccum. 

Condenser fans 

All unit fans are of the axial type, single phase, 6 poles, internally 

protected against potential overheating, silent and suitable for 

outdoor installation. Due to the sophisticated aerodynamic design 

of the blades and inlet cones, as well as the perfect static and 

dynamic balancing, their operation is completely vibration-free. The 

fan-motor assembly has a protective grid against accidental 

contact with moving parts, which is designed according to ISO 

regulations. Fan motors are of the external rotor type, 

aerodynamically shaped so as not to interfere with the airflow, and 

4 


SPCA 001-010RSB ñ R407c/Scroll

have permanently lubricated bearings that do not require servicing. 

Continuous linear fan speed regulation control is achieved 

according to coil temperatures including fan silent mode operation. 

This standard feature for Interklima SPCA units saves energy and 

reduces sound levels dramatically, optimizing capacity. 

Microprocessor controller 

All units are equipped with a sophisticated controller easily 

accessible from outside through a transparent plastic cover that 

combines intelligence with operating simplicity. The controller 

constantly monitors all machine parameters and precisely 

manages 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 start up time delay function. 

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 thermal 

overload. 

ñ Auto diagnostic function and digital display of approximately 

30 possible error codes including thermistor faults. 

ñ Digital displays of water inlet / outlet as well as coil 

temperatures. 

ñ Remote on/ off switch. 

ñ Remote alarm indication capability. 

ñ Many optional control capabilities (listed in optional 

accessories). 

Optional accessories 

Microprocessor controller options 

ñ 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 more than 2 units with optional 

controller. 

ñ Microprocessor parameter reprogramming card. 

Other unit accessories/option 

ñ R407c or R22 refrigerant. 

ñ Antifreeze protection. 

ñ Condenser fins made of copper or prepainted aluminum, or 

blygold treatment for corrosion protection. 

ñ Glycol application for chilled water temperature down to -5 o C. 

ñ Pressure relief valve on compressor discharge. 

ñ High / Low pressure manometers. 

ñ Phase sequence - phase failure - reverse phase and voltage 

monitoring device. 

ñ Compressor noise reduction jacket. 

ñ Compressor chamber noise reduction kit. 

ñ Other custom built options upon request. 

Refrigerant circuit 

All units have a single refrigerant circuit with one compressor.The 

circuit consists, depending on the size, of either a capillary or 

thermal expansion valve. Other components fitted are solenoid 

valve, and a large capacity filter dryer. 

Unit protection is provided by a high-pressure switch with manual 

reset, low-pressure protection is via a low-pressure switch. 



2. Technical specifications 

2.1 SPCA 001-010RSB 

Type 

Nominal cooling capacity 

Construction 

Compressor 

Quantity 

Absorbed power 

Nominal operating current 

Maximum operating current 

Air heat exchanger 


Quantity 

Water content 

Max. Operating pressure 

Connections 

Nominal water flow 

Water pressure drop 

Minimum system water content 

Maximum unit operating water pressure 

Fan 

Quantity 

Speed 

Total air flow 




Pump 



Available external water head 

Electrical characteristics 

Total absorbed power 



Compressor carter resistance power 

Power cables cross section 

Fuses 

Voltage operating limits 


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 

bar 

rpm 

m 3 /h 

kW 

A 

A 

kW 

A 

Kpa 

kW 

A 

A 

W 

mm 2 A 

V 

dB(A) 

Width mm 

Length mm 

Heigth mm 

kg 

SPCA-001-1 SPCA-002-1 SPCA-002 SPCA-003 SPCA-004 

5,8 

1,6 

19.773 

1 

2,00 

9,40 

14,80 

1 

0,57 

30 

30 

3/4" 

998 

26,5 

29 

3,0 

1 

920 

2.500 

0,12 

0,57 

0,63 

0,13 

0,58 

35,0 

2,3 

10,6 

16,0 

70 

4 

25 

1 

45 

474 

1022 

932 

100 

6,9 

2,0 

23.523 

1 

2,40 

11,10 

17,30 

1 

0,66 

30 

30 

3/4" 

1.187 

27,6 

35 

3,0 

6,9 

2,0 

23.523 

1 

2,32 

4,40 

5,60 

Brazed plate 

1 

0,66 

30 

30 

3/4" 

1.187 

27,6 

35 

3,0 

Axial type 

8,1 

2,3 

27.614 

Galvanized steel / Light grey-beige (RAL 9002) 

SCROLL 

1 

920 

2.350 

0,12 

0,57 

0,63 

0,13 

0,58 

32,0 

2,7 

12,3 

18,5 

70 

4 

25 

1 

45 

474 

1022 

932 

108 

1 

920 

2.350 

0,12 

0,57 

0,63 

0,13 

0,58 

32,0 

2,6 

5,6 

6,8 

70 

2,5 

3x16 

1 

Capillary tubes 

R407c 

46 

474 

1022 

932 

108 

1 

2,70 

5,00 

7,00 

1 

0,76 

30 

30 

1" 

1.393 

29,2 

41 

3,0 

1 

920 

4.000 

0,17 

0,80 

0,90 

0,13 

0,58 

30,0 

3,0 

6,4 

8,5 

70 

2,5 

3x16 

1 

48 

474 

1222 

982 

140 

12,2 

3,5 

41.591 

1 

4,02 

7,80 

11,00 

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

230 V/1 ph/50 Hz 400 V/3 ph/50 Hz 

220-240 V 

360-440 V 

1 

1,14 

30 

30 

1" 

2.098 

29,9 

61 

3,0 

2 

920 

4.600 

0,24 

1,14 

1,26 

0,25 

1,1 

42,0 

4,5 

10,0 

13,4 

70 

2,5 

3x16 

1 

48 

522 

1462 

1002 

180 

6 



Type 

Nominal cooling capacity 

Construction 

Compressor 

Quantity 




Air heat exchanger 


Quantity 

Water content 

Max. Operating pressure 

Connections 

Nominal water flow 

Water pressure drop 

Minimum system water content 

Maximum unit operating water pressure 

Fan 

Quantity 

Speed 

Total air flow 




Pump 



Available external water head 

Electrical characteristics 

Total absorbed power 



Compressor carter resistance power 

Power cables cross section 

Fuses 

Voltage operating limits 


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 

bar 

rpm 

m 3 /h 

kW 

A 

A 

kW 

A 

Kpa 

kW 

A 

A 

W 

mm 2 A 

V 

dB(A) 

Width mm 

Length mm 

Heigth mm 

kg 

SPCA-005 SPCA-006 SPCA-007 SPCA-010 

14,6 

4,14 

49.773 

1 

4,70 

8,30 

13,00 

1 

1,35 

30 

30 

1" 

2.511 

34,1 

73 

3,0 

2 

920 

6.200 

0,34 

1,60 

1,80 

0,30 

2,00 

130,0 

5,3 

11,9 

16,8 

70 

4 

3x25 

1 

Capillary tubes 

51 

522 

1612 

1002 

200 

18,5 

5,36 

63.068 

1 

6,00 

12,20 

17,00 

1 

1,40 

30 

30 

1 1/4" 

3.182 

34,6 

93 

3,0 

2 

920 

6.400 

0,34 

1,60 

1,80 

0,45 

2,70 

150,0 

6,8 

16,5 

21,5 

70 

6 

3x25 

22,4 

6,47 

76.364 

Galvanized steel / Light grey-beige (RAL 9002) 

SCROLL 

1 

7,20 

14,50 

20,00 

1 

1,70 

30 

30 

1 1/4" 

3.853 

45,4 

112 

3,0 

31,8 

9,010 

108.409 

1 

10,30 

17,80 

27,00 

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

Brazed plate 

1 

2,50 

30 

30 

1 1/4" 

5.470 

24,4 

159 

3,0 

1 

1 

1 

Expansion valve / Capillary tubes 

R407c 

52 

605 

1732 

1202 

270 

Axial type 

2 

920 

10.500 

0,74 

3,40 

3,80 

0,45 

2,70 

120,0 

400 V/3 ph/50 Hz 

360-440 V 

8,4 

20,6 

26,5 

70 

6 

3x32 

53 

800 

2020 

1202 

320 

2 

920 

11.000 

0,74 

3,40 

3,80 

0,55 

3,50 

165,0 

11,6 

24,7 

34,3 

70 

10 

3x40 

55 

800 

2020 

1202 

350 

NOTES 

Nominal conditions are as 

follows 

entering/leaving chilled 

water temperature 12/7oC; 

ambient 35oC DB 

electrical installation 

specifications are purely 

indicative and non-binding, 

all connections to the 

system and the electrical 

installation must be in full 

accordance with all 

applicable national and local 

codes. 




SPCA 001-010RSB ñ R407c/Scroll 

8 

3. Capacity tables 

SPCA-001-1 

SPCA-002-1 

SPCA-002 







Water 

outlet ÆC 

Cooling 

capacity 

kW 

Absorbed 

power 

kW 

Current 

A 

Absorbed 

power 

kW 

Current 

A 

Cooling 

capacity 

kW 

Absorbed 

power 

kW 

Current 

A 

Cooling 

capacity 

kW 

Absorbed 

power 

kW 

Current 

A 

Cooling 

capacity 

kW 

Absorbed 

power 

kW 

25 30 35 40 45 

Current 

A 

Cooling 

capacity 

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 

5 

7 

10 

6.1 

6.7 

7.5 

7.3 

8.0 

8.9 

7.2 

7.9 

8.8 

8.5 

9.2 

10.4 

12.8 

14.0 

15.7 

15.4 

16.7 

18.7 

19.3 

21.0 

23.6 

23.5 

25.4 

28.4 

33.4 

36.1 

40.4 

1.6 

1.6 

1.6 

1.9 

1.9 

1.8 

1.8 

1.8 

1.8 

2.1 

2.1 

2.1 

3.2 

3.2 

3.2 

3.7 

3.7 

3.7 

4.7 

4.7 

4.7 

5.7 

5.7 

5.7 

8.1 

8.1 

8.2 

7.5 

7.5 

7.4 

8.9 

8.8 

8.7 

3.8 

3.7 

3.7 

4.3 

4.3 

4.3 

6.9 

6.9 

6.9 

6.9 

6.9 

7.0 

10.9 

10.9 

10.9 

13.0 

13.0 

13.0 

15.1 

15.2 

15.2 

5.8 

6.2 

7.0 

6.9 

7.5 

8.4 

6.8 

7.4 

8.3 

8.0 

8.7 

9.8 

12.1 

13.1 

14.8 

14.5 

15.6 

17.5 

18.2 

19.7 

22.2 

22.1 

23.9 

26.8 

31.5 

34.0 

38.1 

1.8 

1.8 

1.8 

2.1 

2.1 

2.1 

2.1 

2.0 

2.0 

2.4 

2.4 

2.4 

3.6 

3.6 

3.6 

4.1 

4.1 

4.1 

5.3 

5.3 

5.3 

6.4 

6.4 

6.4 

9.1 

9.1 

9.1 

8.4 

8.3 

8.2 

9.9 

9.9 

9.8 

4.1 

4.0 

4.0 

4.7 

4.6 

4.6 

7.3 

7.3 

7.3 

7.6 

7.6 

7.6 

11.5 

11.5 

11.5 

13.7 

13.7 

13.6 

16.3 

16.3 

16.4 

5.4 

5.8 

6.6 

6.4 

6.9 

7.8 

6.3 

6.9 

7.8 

7.4 

8.1 

9.2 

11.2 

12.2 

13.9 

13.5 

14.6 

16.4 

17.0 

18.5 

20.8 

20.7 

22.4 

25.2 

29.5 

31.8 

35.7 

2.0 

2.0 

2.0 

2.4 

2.4 

2.3 

2.3 

2.3 

2.3 

2.7 

2.7 

2.7 

4.0 

4.0 

4.0 

4.7 

4.7 

4.7 

6.0 

6.0 

5.9 

7.2 

7.2 

7.2 

10.2 

10.3 

10.3 

9.4 

9.4 

9.2 

11.1 

11.1 

10.9 

4.4 

4.4 

4.4 

5.1 

5.0 

5.0 

7.7 

7.8 

7.8 

8.3 

8.3 

8.3 

12.2 

12.2 

12.2 

14.5 

14.5 

14.5 

17.7 

17.8 

17.8 

4.9 

5.4 

6.1 

5.9 

6.4 

7.2 

5.8 

6.4 

7.2 

6.9 

7.5 

8.5 

10.4 

11.3 

12.9 

12.5 

13.6 

15.2 

15.8 

17.2 

19.5 

19.3 

20.9 

23.5 

27.4 

29.6 

33.3 

2.3 

2.3 

2.3 

2.7 

2.7 

2.7 

2.7 

2.6 

2.6 

3.1 

3.1 

3.1 

4.5 

4.5 

4.5 

5.2 

5.2 

5.2 

6.8 

6.8 

6.7 

8.0 

8.0 

8.1 

11.5 

11.5 

11.6 

10.6 

10.6 

10.4 

12.6 

12.5 

12.4 

4.8 

4.8 

4.8 

5.5 

5.5 

5.5 

8.3 

8.3 

8.3 

9.2 

9.2 

9.2 

13.1 

13.1 

13.1 

15.5 

15.5 

15.5 

19.4 

19.4 

19.4 

4.5 

4.9 

5.5 

5.3 

5.8 

6.6 

5.3 

5.8 

6.6 

6.3 

6.8 

7.8 

9.5 

10.4 

11.8 

11.5 

12.5 

14.1 

14.7 

16.0 

18.1 

17.9 

19.4 

21.9 

25.3 

27.4 

30.8 

2.6 

2.6 

2.6 

3.1 

3.1 

3.0 

3.0 

3.0 

3.0 

3.5 

3.5 

3.5 

5.0 

5.0 

5.0 

5.9 

5.9 

5.9 

7.7 

7.7 

7.7 

9.0 

9.0 

9.0 

13.0 

13.0 

13.0 

12.1 

12.0 

11.9 

14.3 

14.2 

14.1 

5.3 

5.3 

5.3 

6.1 

6.1 

6.0 

8.9 

8.9 

9.0 

10.2 

10.2 

10.2 

14.1 

14.1 

14.1 

16.6 

16.6 

16.6 

21.3 

21.3 

21.4 

Type 

Ambient temperature o C 

Cooling capacity table for SPCA 001-010RSB 

NOTES 

Bold values show nominal cooling capacities 

Absorbed power and current refers to the compressor 

Above figures are valid for water ¢t = 5 o C

4. Available external water pressure curves 


PD 

90 

80 

70 

60 

kpa 

50 

40 

004 

30 

20 

10 

001 

003 

002 

0 0 500 1.000 1.500 2.000 2.500 3.000 3.500 WF 

l/h 

PD 

kpa 

360 

340 

320 

300 

280 

260 

240 

220 

010 

200 

180 

160 

007 

140 

006 

120 

100 

80 

005 

60 

40 

20 

0 0 500 1,000 1,500 2.000 2.500 3.000 3.500 4.000 4.500 5.000 5.500 6.000 WF 

l/h 

NOTES 

PD: pressure drop 

WF: water flow rate 

1. SPCA 001-002RSB 

2. SPCA 003RSB 




6. SPCA 007-010RSB 

ETHYLENE GLYCOL CORRECTION FACTORS 

% ETHYLENE GLYCOL BY VOLUME 

Freezing point 

o C 

Output duty 

kW 

Input power 

kW 

Equivalent Flow rate 

L/H 

Equivalent Pressure drop kPa 

UNIT 10 

-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 



5. Operation range 

O 

Outdoor Temperature ( CDB) 

47 

45 

NOTES 

Protect the water circuit against freezing 

4 

0 

-5 

6 15 

Leaving water 

temperature( o C) 

- The accompanying operating limits are for general guidance only. 

It may be possible for certain units to operate outside the confines 

of the graph. Please contact Interklima if further clarification is 

required. 

- For operation with leaving water temperature below 6 o C it is 

required to confirm with Interklima at the time of order and the 

addition of glycol into the system. 

6. Sound data 

Type 

Octave band center frequency (Hz) 

SPCA - 001 

SPCA - 002 







Power 

Pressure @1 m 

Pressure @10 m 

Power 

Pressure @1 m 


Power 

Pressure @1 m 


Power 

Pressure @1 m 


Power 

Pressure @1 m 


Power 

Pressure @1 m 


Power 

Pressure @1 m 


Power 

Pressure @1 m 


dB(A) 

66 

58 

39 

67 

59 

39 

68 

60 

40 

70 

62 

42 

71 

64 

44 

74 

66 

46 

75 

67 

47 

77 

69 

49 

63 

49 

41 

21 

49 

41 

21 

51 

43 

23 

52 

44 

24 

54 

46 

26 

54 

46 

26 

54 

46 

26 

54 

46 

26 

125 

55 

47 

27 

55 

47 

27 

56 

48 

28 

58 

50 

30 

59 

51 

31 

59 

51 

31 

60 

52 

32 

60 

52 

32 

250 

56 

48 

28 

56 

48 

28 

57 

49 

29 

59 

51 

31 

60 

52 

32 

61 

53 

33 

60 

52 

32 

61 

53 

33 

500 

58 

50 

30 

58 

50 

30 

59 

51 

31 

61 

53 

33 

61 

53 

33 

69 

61 

41 

69 

61 

41 

70 

62 

42 

1000 

62 

54 

34 

62 

56 

36 

64 

56 

36 

65 

57 

37 

67 

59 

39 

68 

60 

40 

68 

60 

40 

69 

61 

41 

2000 

59 

51 

31 

61 

55 

35 

62 

54 

34 

63 

55 

35 

64 

56 

36 

67 

59 

39 

70 

62 

42 

73 

65 

45 

4000 

54 

46 

26 

58 

53 

33 

58 

50 

30 

58 

50 

30 

65 

57 

37 

63 

55 

35 

65 

57 

37 

70 

62 

42 

8000 

49 

41 

21 

48 

42 

22 

49 

41 

21 

50 

42 

22 

53 

45 

25 

50 

42 

22 

50 

42 

22 

57 

49 

29 

10 



7. Outlook drawings 

7.1 SPCA 001-002RSB 

474 

460 

1022 

1008 

932 

450 

7.2 SPCA 003RSB 

474 

460 

49 

1000 

1222 

1208 

981 

450 


522 

508 

51 

1200 

1462 

1448 

1002 

500 

1440 


522 1612 

508 

1598 

1002 

500 

1590 



0 m m 

1 

m a x . 

w 

r e 

c 

s 

f 

o 

R 

De pt h 

E i s c 

n 

h r 

a 

u b 

Mulfingen 

Germany 

t ie 

f e 

m a 

x 

. 

1 

0 m m 

0 m m 

1 

m a x . 

w 

r e 

c 

s 

f 

o 

R 

De pt h 

E i s c 

n 

h r 

a 

u b 

Mulfingen 

Germany 

t ie 

f e 

m a 

x 

. 

1 

0 m m 

519 


1754 

1740 

50 

1202 

605 

40 

1732 

7.6 SPCA 007-010RSB 

2042 

2028 

137 

1202 

800 

40 2020 

12 



8. Refrigerant circuit diagrams 

8.1 SPCA 001-005RSB 

3 

4 

2 

1 

5.1 


3 3 

4 

2 

1 

6 

5.2 

NOTES 

1. Compressor 

2. Plate heat exchanger 

3. Condenser coil 

4. Filter dryer 

5.1 Capillary 

5.2 Thermal expansion valve 

6. Solenoid valve 



9. Wiring diagrams 

9.1 SPCA 001-002RSB-1 

SM1 

ALARM OUTPUT 

grd 

grd 

grd 

L 

N 

PE 

AL 

AL 

12AC ALL GND GND 

12AC 12DC TK1 ID5 

ST4 

ID4 

S3 

ST3 

ID3 

S2 

ST2 

ID2 

S1 

ST1 

ID1 

F 2A 

ON 

F 

L 

H 

ENERGY 210 

CC 

CC 

12V 

12V 

TR 

Off 

S P P 

220V 

CM 

C 

CH 

N 

EMI 

FILTER 

Cf1 C 

C1 

FM1 

CC 

C 

PM 

4 

A 

F 

P 

V 

9.2 SPCA 002-003RSB 

SM1 

ALARM OUTPUT 

grd 

grd 

grd 

L1 

L2 

L3 

N 

PE 

VC 

AL 

F 2A 

AL 



ENERGY 210 

ST4 

ID4 

ON 

S3 

ST3 

ID3 

F 

S2 

ST2 

ID2 

L 

S1 

ST1 

ID1 

H 

CC 

CC 

12V 

12V 

TR 

Off 

S P P 

220V 

CM 

CH 

N 

VC 

EMI 

FILTER 

Cf1 C 

C1 

FM1 

CC 

C 

PM 

4 

A 

F 

P 

V 

9.3 SPCA 004-005RSB 

SM1 

ALARM OUTPUT 

grd 

grd 

grd 

L1 

L2 

L3 

N 

PE 

VC 

AL 

F 2A 

AL 



ENERGY 210 

ST4 

ID4 

ON 

S3 

ST3 

ID3 

F 

S2 

ST2 

ID2 

L 

S1 

ST1 

ID1 

H 

CC 

CP 

CC 

12V 

12V 

TR 

Off 

S P P 

220V 

CM 

PM 

CH 

N 

VC 

EMI 

FILTER 

Cf2 C 

C2 

FM2 

C1 

Cf1 

C 

FM1 

CC 

C 

CP 

4 

A 

F 

P 

V 

14 




SM1 

ALARM OUTPUT 

T 

grd 

grd 

grd 

L1 

L2 

L3 

N 

PE 

VC 

AL 

F 2A 

AL 



ENERGY 210 

C 

ST4 

ID4 

ON 

S3 

ST3 

ID3 

F 

S2 

ST2 

ID2 

L 

S1 

ST1 

ID1 

H 

CC 

CP 

CC 

12V 

12V 

TR 

Off 

S P P 

220V 

CM 

PM 

CH 

N 

VC 

EMI 

FILTER 

CC 

SV 

Cf2 C 

C2 C1 

FM2 

Cf1 C 

FM1 

F 

CC 

C 

P 

CP 

4 

V 

A 


SM1 

ALARM OUTPUT 

T 

grd 

grd 

grd 

L1 

L2 

L3 

N 

PE 

CC 

VC 

CP 

CC 

12V 

AL 

F 2A 

12V 

TR 

220V 

CF 22 33 

34 

FAN SPEED 

CONTROLLER 

24 F1 

AL 



ENERGY 210 

C 

ST4 

ID4 

ON 

Off 

S3 

ST3 

ID3 

F 

S2 

ST2 

ID2 

L 

S1 

ST1 

ID1 

H 

S P P 

CM 

PM 

CH 

N 

VC 

EMI 

FILTER 

CC 

SV 

Cf2 C 

C2 

FM2 

Cf1 C 

C1 

FM1 

F 

C 

P 

CP 

4 

V 

A 

LEGEND 

SM1 GENERAL CIRCUIT BREAKER 

CC COMPRESSOR CONTACTOR 

CH COMPRESSOR CRANKCASE HEATER 

TR TRANSFORMER 220/2x12VAC 

HP HIGH PRESSURE PRESSOSTAT 

LP LOW PRESSURE PRESSOSTAT 

F CONTROL CIRCUIT BREAKER (2A) 

C1,2 COND, FANS 1, 2 CAPACITORS 

FS WATER DIFFERENTIAL PRESSOSTAT 

TC COMPRESSOR THERMAL PROTECTION 

S1 ENTERING WATER SENSOR 

S2 LEAVING WATER SENSOR 

S3 CONDENSER COIL TEMPERATURE SENSOR 

A COMMAND 220VAC FOR ELECTRICAL HEATERS 

(OPTIONAL) 

CP PUMP CONTACTOR 

PM PUMP 

CM COMPRESSOR 

VC VOLTAGE SURVEYOR (OPTIONAL) 

SV LIQUID SOLENOID VALVE 

ALARM 

E00: 

E01: 

E02: 

E03: 

E05: 

E06: 

E07: 

E41: 

REMOTE ON/OFF IN POSITION OFF 

HIGH PRESSURE 

LOW PRESSURE 

COMPRESSOR THERMAL PROTECTION* 

(*ONLY FOR SPCA 006-010RSB) 

ANTIFREEZE 

PROBE ST2 FAULT 

PROBE ST3 FAULT 

WATER DIFFERENTIAL PRESSOSTAT 

FIELD CONNECTIONS 

ON OFF AL AL 

ON -OFF REMOTE SWITCH 

(DRY CONTACT) 

AL-AL ALARM 12 V AC 



10.Installation 

10.1 Selection of location - service space 

The SPCA-RSB unit should be installed in a location that meets the 

following requirements: 

1. The foundation is strong enough to support the weight of the unit, 

and the floor is flat to prevent vibration and noise generation. 

2. The space around the unit is adequate for servicing and the 

minimum space for air inlet and air outlet is available. If several 

units are being installed side by side in parallel, the minimum 

service 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 not 

positioned towards the main wind direction. Frontal wind will 

disturb the operation of the unit. If necessary, use a 

windscreen to block the wind. 

6. In heavy snowfall areas, select an installation site where snow 

will not affect operation of the unit. 

7. Make sure that the unit mounting base 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 antivibration 

material to install under the supports of the unit is 

recommended. It is suggested to install a rubber pad between 

the points of support and the base of the unit, or spring 

antivibration mounts under each point of support of the unit. 

400mm 

500mm 

500mm 

(1500mm for 

006-010 models) 

800mm 

500mm 

10.2 Centre of gravity 

SPCA 001-002RSB 

SPCA 003RSB 

420 

420 

175 390 

175 

490 



420 

420 

200 

570 

200 620 

16 




SPCA 007-010RSB 

590 

590 

250 650 

350 750 

10.3 Recomendations concerning the hydraulic circuit 

ñ All units are equipped with a complete hydraulic kit as shown 

in the figure below. 

ñ All field connections must be carried out by a licensed 

technician and must comply with the applicable local and 

national codes. 

ñ Evaporator water connections should be made in accordance 

with the unit outlook respecting the water inlet and outlets. 

ñ Connect a fresh water line to the water make up connection. 

The units are equipped with a automatic make up valve to 

facilitate water make up. 

ñ It is advisable to connect flexible water inlet and outlet tubes 

to avoid vibration transmission. 

ñ The unit is operating in closed circuit. Avoid frequent 

unnecessary water evacuation. 

ñ It is essential to install a thermometer in the water inlet/outlet 

pipe to check temperatures. 

ñ Provide heat insulation with suitable vapour barrier around the 

chilled water piping to prevent condensation and capacity loss. 

ñ Provide drain connections at all low points of the system to 

permit complete drainage for maintenance and/ or shutdown. 

ñ Air vents should be provided at all high points in the system 

located where they are easily accessible for servicing. The 

water inlet pipe is specially designed to obtain a complete air 

purge of the evaporator. 

ñ To avoid frequent on/off operation of the compressor, a 

minimum water volume is required in the system (table 10.4) 

ñ To assure proper operation of the unit, the water quality through 

the evaporator must be within the specified limits in (table 10.4). 

NOTES 

1. Pump 

2. Plate heat exchanger 

3. Automatic make up water 

valve with manometer 

4. Buffer tank (water accumulation) 

5. Expansion tank 

6. Airvent 

7. Pressure relief valve 

8. Differential water pressure switch 

9. Water filter 



10.4 Watercharge, flow and quality 

To ensure proper operation of the unit, a minimum water volume 

is required in the system and the water flow must be within the 

operation range as specified in the table. 

SPCA-001-1RSB 

SPCA-002-1RSB 

SPCA-002RSB 






SPCA-010RSB 

Minim um 

water 

volume (l) 

29 

35 

35 

41 

61 

73 

93 

112 

159 

Minim um 

water flow 

(l/h) 

948 

1127 

1127 

1324 

1993 

2386 

3023 

3660 

5196 

Nominal 

water flow 

(l/h) 

997 

1187 

1187 

1393 

2098 

2511 

3182 

3853 

5469 

Maxim um 

water flow 

(l/h) 

1097 

1305 

1305 

1533 

2308 

2762 

3500 

4238 

6017 

Be sure the water quality is in accordance with the specifications 

below 

NOTES 

The above tables are purely 

indicative and non binding 

Items 

Items to be controlled: 

PH AT 25 Ô C 

∂lectrical conduct (mS/m) at 25 Ô C 

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 

Circulating 

water 20C 

Evaporator water 

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 

- 

Supply water 

6.8 - 8.0 

below 30 

below 200 

below 50 

below 50 

below 70 

below 50 

below 30 

below 0.3 

below 0.1 


below 0.1 

below 0.3 

below 4.0 

- 

Circulating 

water 20C-60C 

7.0 - 8.0 

below 30 

below 30 

below 30 

below 50 

below 70 

below 50 

below 30 

Heated water 

below 1.0 

below 1.0 


below 0.1 

below 0.1 

below 0.4 

- 

Supply water 

7.0 - 8.0 

below 30 

below 30 

below 30 

below 50 

below 70 

below 50 

below 30 

below 0.3 

below 1.0 


below 0.1 

below 0.3 

below 4.0 

- 

Tendency 

if out of criteria 

corrosion + scale 


corrosion 

corrosion 

scale 

scale 

scale 

scale 


corrosion 

corrosion 

corrosion 

corrosion 

corrosion 


10.5 Operating pressure of the refrigerant 

circuit. 

It is important to check the high and low pressure of the 

refrigerant circuit to ensure the proper operation of the unit and 

to guarantee that the rated output will be obtained. 

Attention: 

The pressures measured will vary between 

a maximum and minimum value, depending on the 

water and ambient temperatures at the moment 

of measurement. 

Cooling mode 

(region) 

low pressure 

high pressure 

Minim um 

(outdoor temp. 15 Ô Nominal 

CDB) 

(leaving water temp 6 Ô (outdoor temp. 35 Ô Maximum 

CDB) 

C) (leaving water temp, 7 Ô (outdoor temp. 38 Ô CDB) 

C) (leaving water temp, 25 Ô C) 

3,5-4 bar 

17-19 bar 

4-5 bar 

21-23 bar 

5,5-6 bar 

24-26 bar 

18 



10.6 Digital controler 

User interface SPCA 001-010RSB 

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

operations connected to the use of the instrument, and in 

particular to: 

Set operating mode 

Check the state of resources 

Respond to alarm situations 

10.6.1 Keys 

1 2 

Front panel of the instrument 

Selects operating mode: (Heating /Defrost 

refers only to SPCA Heat pump series) 

If the heating mode is enabled, each time the 

key is pressed the following sequence occurs: 

Stand-by cooling heating stand by 

If cooling mode is enabled: 

heating stand by cooling heating stand by 

In menu mode, this key acts as a SCROLL UP 

or UP key (increasing value). 

Resets alarms, and turns the instrument on 

and off. Press once to reset all manually reset 

alarms not currently active. 

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. 

10.6.2 Displays 

10.6.2.1 Display 

Normal display shows: 

ñ Regulation temperature in tenths of degrees 

celsius with a decimal point, or in degrees 

fahrenheit without a decimal point. 

ñ 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. 

ñ 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 

whether temperature control is active or not. 

ñ When in menu mode, the display depends on the 

current position; labels and codes are used to 

help the user identify the current function. 

ñ Decimal point: when displaying hours of operation, 

indicates that the value must be multiplied x 100. 

10.6.2.2 Led 

Led 1 compressor 1(step 1) 

ON if compressor 1 is active 

OFF if compressor 1 is off 

Rapid BLINK if safety timing is in progress 

Slow BLINK if compressor is currently set to defrost (heat 

pump version) 

Power step 2 led 

Not used 

Defrost led (heat pump version) 

ON if defrosting is in progress 

OFF if defrosting is disabled or has been completed 

BLINK if timing is in progress (defrost interval) 

Electrical heater/boiler led 

ON if the internal anti-freeze electrical heater or boiler is on 

OFF 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 led 

ON if the controller is in cooling mode 

If neither the HEATING led nor the COOLING led is on, the 

controller is in STAND-BY mode 



10.7 Remote keyboard 

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

information displayed on the instrument, with the same leds; 

Connection with the controller is illustrated below: 

Connection 

Remote keyboard 

25 

24 

26 

Blue 

Red 

Black 

Back side 

It performs exactly the same functions as those described in the 

display section.The only difference is in use of the UP and DOWN 

keys (to increase and decrease value), which are separate from 

the MODE and ON/OFF keys. 

Conn. A 

Conn. B 

20 



11.Guide specifications 


The supply, transport to jobsite, installation, commissioning and 

start up of an air cooled water chiller with the following technical 

characteristics. 

The unit shall be factory assembled, charged with R407C 

refrigerant and factory tested. 

The capacity of the unit shall be no less than: kW 

Ambient air temperature (DB) 

Entering water temperature 

Leaving water temperature 

ÆC 

ÆC 

ÆC 

The unit shall operate unhindered within 6 to 15ÆC water outlet 

temperature, 3.5 to 7ÆC water temperature difference and 5 up to 

45ÆC ambient air temperature. 

The structural requirements shall be the following: 

UNIT HOUSING 

The unit housing shall be fabricated from heavy gauge galvanized 

steel sheets, formed to ensure maximum rigidity that shall 

guarantee and preserve the unit operation during the years. All 

metal parts after fabrication shall be degreased phosphatized, and 

electrostatically powder coated with epoxy- polyester RAL 9002 

coating of a thickness of 60 - 70 Ì. The corrosion resistance 

treatment must successfully withstand a salt spray test of 500 

hours, according to ASTM B- 117. All components shall be 

assembled exclusively together using bolts, without welding. The 

unit shall have removable access panels, designed in such a 

manner as to permit easy access to internal compartments only 

by authorized personnel. 

COMPRESSOR 

Shall be of the hermetic scroll type, with low noise and vibration 

levels, specially optimized for use with R407c refrigerant. It shall 

be equipped with a crank case electrical heater, to separate 

refrigerant and oil when the unit is not operating. It shall also 

include internal protection against overloading or electrical spikes. 

The compressor shall be mounted on special anti vibration rubber 

mounts to absorb and eliminate any vibration that can be 

generated from the unit base. 

HYDRAULIC KIT 

The unit shall be equipped with a complete hydraulic kit, 

comprising of a circulating pump, buffer and expansion tank, 

automatic fill / make up water valve with manometer, safety valve, 

air vent, water filter and differential water pressure switch. 

AIR HEAT EXCHANGER 

The air hear exchanger shall be manufactured from seamless 

copper tubes having an outside diameter of 9.52mm (3/8'') of high 

quality according to ASTM B 280. The tubes shall be internally 

grooved to achieve optimized heat transfer between refrigerant and 

tube. The fins shall be manufactured from aluminium. The fins shall 

be continuous across the heat exchanger and the fin surface shall 

be waffle formed and louvered so as to increase the fin rigidity and 

heat transfer. The combination of internally grooved copper tubing 

and louvered fins must result in a heat transfer performance 30% 

superior to that of a conventional coil. 

The assembly of the finned pack shall be achieved by mechanical 

expansion in such a way as to form a perfect mechanical bond 

with the fins. For this purpose, the fin holes shall have a peripheral 

extrusion (collar). 

WATER HEAT EXCHANGER 

The water heat exchanger shall be of the plate heat exchanger 

type, selected from world-class manufacturers and made of 

stainless steel plates (AISI 3161.4401) specially formed to 

achieve optimized heat transfer. The plates shall be assembled by 

means of an automatic brazing process, under vaccum. 

CONDENSER FANS 

The unit shall be equipped with axial type fans, single phase, and 

6 poles, internally protected against potential overheating, 

noiseless and suitable for outdoor installation. The design of the 

blades and inlet cones shall be aerodynamic, and the fan motor 

assembly shall be perfectly statically and dinamically balanced 

allowing a completely vibration free operation. The fan motor 

assembly shall have a protective grid against accidental contact 

with moving parts according to ISO. The fan motor shall be of the 

external rotor type with permanently lubricated bearings that do 

not require servicing. The motor shall be aerodynamically shaped 

so as not to interfere with the airflow. The unit shall be equipped 

with a continuous linear fan speed regulation control according to 

coil temperature. 

CONTROL SYSTEM WITH MICROPROCESSOR CONTROLLER 

The control system shall possess a sophisticated controller that 

shall constantly monitor all machine parameters and particullarly 

manage 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 start up time delay 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. 

ñ Remote on / off selection. 

ñ Various other optional control capabilities (listed in options). 

REFRIGERANT CIRCUIT 

The unit shall have a single refrigerant circuit with one 

compressor. The circuit shall consist of a filter dryer, expansion 

device, solenoid valve, high and low pressure switch with manual 

reset. 

NOTE 

The consultant may if required add the below mentioned optional 

accessories / 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 Plate 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 High / low pressure manometers. 

ñ Phase sequence phase failure - reverse phase and voltage 

monitoring device. 

22 



Engineering Data 2006 

Products are manufactured in ISO 9001:2000 

certified 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 units comply with the European regulations that 

guarantee the safety of the product 

Specifications subject to change without notice 

INTERKLIMA PRODUCTS ARE DISTRIBUTED BY: 

EGB-B-3-1-05/06

SPCA 001-010RSB

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