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MSRA SERIES Modular Air Cooled Scroll Heat Pump Chiller SRA131 | SRA150 | SRA290 | SRA340 Nominal Capacity 64 to 3320 kW(R) Issue: 2.0 Date 07/08

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Page 1: MSRA SERIES

MSRA SERIESModular Air Cooled Scroll Heat Pump Chiller

SRA131 | SRA150 | SRA290 | SRA340

Nominal Capacity 64 to 3320 kW(R)

Issue: 2.0 Date 07/08

Page 2: MSRA SERIES

Contents

FEATURES

MV6 CONTROL

PHYSICAL DATA

UNIT CAPACITY

CHILLER SELECTION

ELECTRICAL DATA

WIRING DIAGRAM

PHYSICAL DIMENSION

PIPING SCHEMATIC

1

4

6

12

22

23

24

26

28

Page 3: MSRA SERIES

FeaturesMULTISTACK Air Cooled Chillers are designed and constructed under the modular technol-

ogy patent. A chiller bank consists of multiple individual chiller modules connected in paral-

lel to operate as a single machine, with cooling or heating capacity to match the load

demand by varying the number of operating modules. The chiller modules start from a

small half module, and expandable to fifteen full modules for SRA131 and SRA150 and ten

for SRA290 and SRA340, giving you full flexibility to increase the capacity as your needs

increase.

Each full module consists of two tandem scroll compressor sets (4 compressors), evaporator,

condenser, and sophisticated control and protection equipments. Each module operates as

a completely independent refrigeration circuit, and varying to the total load demand. The

controller will change the chiller’s capacity by either controlling the number of modules in

operation or by adjusting the capacity of the last start up compressor.

The compact size of each module means easy access via standard doorways and lifts. You no longer need special access

to install the chiller.

LOWER INSTALLATION COSTConnection of the modules has never been simpler – only two pipes

to connect then the communication connections and you’re in

business.

ADD-ON FLEXIBILITYEach module in the Multistack system delivers both, cooling and

heating. As many as 10 full modules can be connected together as a

chiller bank. Multistack chillers has inbuilt flexibility, which useful in

tenancy changes and strata title applications.

The Multistack Air Cooled lineup is available in cooling only or heat pump version for duel operation.

STRUCTURE

COMPACT AND SPACE-SAVING

1

Page 4: MSRA SERIES

SAFE AND RELIABLEEvery module works as an independent refrigeration circuit, with adjacent modules operating independently. In the

event of a malfunction in the system, the computer selects the next available standby module to provide back up. One

failed module will not disrupt the other chillers or system, giving you total piece of mind.

PEAK ECONOMY AT ALL LOADSAutomatic scheduling of the compressors allows the chiller to match the fluctuating cooling/heating loads and

conserve energy with each individual unit running at its peak efficiency. This is much more economical when

compared to a large single unit running at part load.

UNPARALLELED RELIABILITYEvery Multistack slave module is identical to each other, so in the event of a malfunction in the system, the computer

automatically selects the next available standby circuit to provide back up. For critical air conditioning and industrial

process cooling a Multistack modular Chiller inherently provides economical standby capacity and unparalleled

dependability.

HIGH EFFICIENCY, QUIET OPERATING SCROLL COMPRESSOROur compressors have a high coefficient of performance (COP) – (approximately 9% higher than that of a reciprocating

compressor), resulting in outstanding reliability due to fewer moving parts, lower starting toque, and tolerance for

flood-back and a rigid internal construction. All this is achieved through high volumetric efficiency, minimized pressure

losses due to the absence of valve plates, and reduced heat transfer loss due to better separation of suction and

discharge gases. In addition, scroll compressors produce less vibrations and quieter than that of its hermetic counter-

part (due to absence of dynamic suction and discharge valves and a much smoother compression process).

“GIVING YOU OUTSTANDING RELIABILITY & PERFORMANCE”

Page 5: MSRA SERIES

EXCLUSIVE DEFROSTING TECHNOLOGYThe chiller not only adapts to the heat pump cycle (which is specifically designed to improve heat pump operational

performance and obtaining a faster defrosting cycle), but also when an even amount frost build up is present; it will

thaw it completely in a very short time. Defrosting cycle is only carried out when the demand for defrosting is present

in each module, which means the modules that are frosted will defrost, while the others remain in operation, giving

you a reliable and fully uninterrupted system.

This excusive defrosting technology can ensure complete deforesting even in the harshest of environments, ensuring

you with excellent heating performance, and a comfortable environment all year round.

ENVIRONMENTALLY FRIENDLYMultistack Chillers are friendly to the environment, and currently running on the non-toxic R22 refrigerant (approved

under the Montral Protocol, and for sale until 2030) as standard, along with the R407c and R134a as optional. It is also

pleasing to the ears, running quietly even at 100% capacity.

Multistack Heat Pump Chiller

Other Heat Pump Chiller

3

Page 6: MSRA SERIES

Fault ReviewThe controller will record and display the last 60 faults that occurred, giving detailed information such as time, date,

location, cause, current status, as well as the performance data collected at the moment each fault occurred.

Compressor SequenceThe MV6 controller accumulates the running hours of each compressor and hence establishes working sequence. A

standby compressor with the least working hours will be activated during loading. The same goes for a compressor

with the most working hours will be stopped during unloading. This ensures each compressor in the system has an

even usage, which will save you time and money in the long run for maintenance.

MV6 ControlThe MV6 computer control monitors the chiller’s operation and schedules the on and off of each compressor and capacity control stages in respect to the change in load demand. The computer continuously and comprehensively monitors the total operation of all modules in the chiller bank. It will also shut down individual module or the entire bank in the event that a fault occurs. A maximum of 32 refrigeration circuits can be monitored at one time.

System data and Variables DisplayThe controller’s 5.7” touch panel can not only display

the chiller’s operation data but also provides you

with direct access to all of the chillers setting and

variables for total system control.

Chiller operation status

___chilled water temperature

___condenser water temperature

___% of chiller cooling capacity

___% demand loading

___load /unload time delay

___current fault number

___% of loading limitation

___lead compressor no.

Module operation status

___compressor suction pressure

___compressor discharge pressure

___evaporating temperature

___chilled water leaving temperature

___faults status

Chiller variables settings

____ password

____chilled water temperature

____lead compressor

____temperature integrating time

____economy offset

____load/unload time delay

____time and date

Chiller variables settings

____ password

____chilled water temperature

____lead compressor

____temperature integrating time

____economy offset

____load/unload time delay

____time and date

Page 7: MSRA SERIES

Load ProfileThe controller records all working hours of the chiller and compressor and records it accord-

ingly in 10% brackets from 0% - 100%, giving you detailed information for which percentage

the chiller is running mostly.

Remote Control & Monitoring (optional)MV6 is fitted with a RS485 serial port, which enables remote control monitoring.

(1) Connect it to a pc and install the software (Ms Windows based only) and away you go. Multistack’s RCM

software give you full access to the chillers controls and settings, with a maximum communication cable length of

1200m.

(2) The MV6 is opened to the ASCII agreement and communicates with bas.

(3) Connect it to an Ethernet-card and with an IP address you can access the chiller over the internet giving you

absolute flexibility.

1 Modular Series

2 Scroll Chiller

3 Cooling Type

A:Air Cooled

W:Water Cooled

4 Model Type

131 | 150

290 | 340

5 Chiller Type

C: Cooling Only

H: Heat Pump

6 The number of modules

MSRA 131 &150: 0.5-10

MSRA 290 &340: 1.0-10

7 Electrical Specifications

A:380-420V, 50Hz, 3 Phase

C:440-480V, 60Hz, 3Phase

7 Electrical Specifications

A:380-420V, 50Hz, 3 Phase

C:440-480V, 60Hz, 3Phase

8 Configuration

B: Back to Back (Standard)

E: End to End (Option) *For MSRA 131 & 150 only

9 Refrigerant

E:R134a

F:R22

R:R407c

PasswordA two level password protection is included (for both customer and service personnel) to

give you piece of mind. For example the service password will give you full access to settings

and variables, but the user password will only enable the user see but not change settings

and variables.

Standby ControlEach module can be set for three modes: auto/ off/independent operation via the slave

outstation card installed in the module. Default setting is “auto”, with “off” mode for when

maintenance is required and “independent” mode (where the module is controlled by its

own slave outstation card and operates independently from the controller), is usually for

commissioning or emergency operation.

Model Number Designation

M SR A 131 C - 5 A B F

1 2 3 54 76 8 9

5

Page 8: MSRA SERIES

R22 – MSRA131 | MSRA150�

Model� 131H� 131C� 150H� 150C�

Cooling�Nominal�Cooling�Capacity�(kW)� 129� 148�

Compressor�Power�Input�(kW)� 42.0� 46.5�

Heating�Nominal�Heating�Capacity�(kW)� 135� �� 156� ��

Compressor�Power�Input�(kW)� 41.5� �� 45.8� ��

Compressor�

Type� Hermetic�Scroll�

Number� 4�

Power� 380�420V�/�50Hz�/�3�Phase�

Start�Up�Current�A� 130� 145�

Max.�Running�Current�A� 21.1� 24.8�

Refrigerant�Type� R22�

Charge�(kg)� 29� 27.4� 32� 29�

Evaporator�

Type� Brazed�Plate�Heat�Exchanger�

Water�Flow�Rate�(L/s)� 6.2� 7.1�

Water�Pressure�Drop�(kPa)� 52�

Fouling�Factor�(m2k/kW)� 0.086�

Max�Working�Pressure�Water�(kPa)� 2.0�

Condenser�

Type� Coil�

Type�of�Fan� Axial�Fan�

No.�of�Fan� 4�

Fan�Power�Input�(kW)� 1.1�x�4�

Air�Flow�Rate�(m3/h)� 56000� 60000�

Water�Connection� 6”�

Dimension�(L�x�W�x�H)�mm� 1800�x�1800�x�2050�

Operation�Weight�(kg)� 1500� 1460� 1520� 1480�

Shipping�Weight�(kg)� 1600� 1560� 1620� 1580�

Cooling: Ambient 35ºC Heating: Ambient 7ºC DB / 6ºC WB

Chilled Water Entering Temp. 12ºC Hot Water Entering Temp 40ºC

Chilled Water Leaving Temp. 7ºC Hot Water Leaving Temp. 45ºC

Nominal Values based on:

Note: Minimum Chilled Water Flow Rate per module: Nominal Water Flow Rate less 10%

Contact nearest authorised agent if lower flow rate is required.

Physical Data Per Module Model

Cooling

Heating

Compressor

Refrigerant

Evaporator

Condenser

131H 131C 150H 150C

Issue: 2.0 Date 07/08

2000

Control Stages 0-50-100

27 26

0.018

Page 9: MSRA SERIES

R22 – MSRA290 | MSRA340

Cooling: Ambient 35ºC Heating: Ambient 7ºC DB / 6ºC WB

Chilled Water Entering Temp. 12ºC Hot Water Entering Temp 40ºC

Chilled Water Leaving Temp. 7ºC Hot Water Leaving Temp. 45ºC

Nominal Values based on:

Note: Minimum Chilled Water Flow Rate per module: Nominal Water Flow Rate less 10%

Contact nearest authorised agent if lower flow rate is required.

Model� 290H� 290C� 340H� 340C�

Cooling�Nominal�Cooling�Capacity�(kW)� 288� 332�

Compressor�Power�Input�(kW)� 94.0� 99.2�

Heating�Nominal�Heating�Capacity�(kW)� 302� �� 346� ��

Compressor�Power�Input�(kW)� 92.4� �� 97.6� ��

Compressor�

Type� Hermetic�Scroll�

Number� 4�

Power� 380�420V�/�50Hz�/�3�Phase�

Start�Up�Current�A� 250� 270�

Max.�Running�Current�A� 46� 49.2�

Refrigerant�Type� R22�

Charge�(kg)� 81.8� 64.0� 92.0� 72.0�

Evaporator�

Type� Brazed�Plate�Heat�Exchanger�

Water�Flow�Rate�(L/s)� 13.8� 15.9�

Water�Pressure�Drop�(kPa)� 55�

Fouling�Factor�(m2k/kW)� 0.086�

Max�Working�Pressure�Water�(kPa)� 2.0�

Condenser�

Type� Coil�

Type�of�Fan� Axial�Fan�

No.�of�Fan� 4�

Fan�Power�Input�(kW)� 2.2�x�4�

Air�Flow�Rate�(m3/h)� 120000� 128000�

Water�Connection� 8”�

Dimension�(L�x�W�x�H)�mm� 2300�x�2200�x�2240�

Operation�Weight�(kg)� 2540� 2450� 2550� 2460�

Shipping�Weight�(kg)� 2650� 2560� 2660� 2570�

Model

Cooling

Heating

Compressor

Refrigerant

Evaporator

Condenser

290H 290C 340H 340C

7

Issue: 2.0 Date 07/08

2000

Control Stages 0-50-100

88 72 90 74

0.018

Page 10: MSRA SERIES

R407c – MSRA131 | MSRA150

Cooling: Ambient 35ºC Heating: Ambient 7ºC DB / 6ºC WB

Chilled Water Entering Temp. 12ºC Hot Water Entering Temp 40ºC

Chilled Water Leaving Temp. 7ºC Hot Water Leaving Temp. 45ºC

Nominal Values based on:

Note: Minimum Chilled Water Flow Rate per module: Nominal Water Flow Rate less 10%

Contact nearest authorised agent if lower flow rate is required.

Model� 131H� 131C� 150H� 150C�

Cooling�Nominal�Cooling�Capacity�(kW)� 125� 143�

Compressor�Power�Input�(kW)� 42.8� 46.0�

Heating�Nominal�Heating�Capacity�(kW)� 130� �� 149� ��

Compressor�Power�Input�(kW)� 42.6� �� 45.4� ��

Compressor�

Type� Hermetic�Scroll�

Number� 4�

Power� 380�420V�/�50Hz�/�3�Phase�

Start�Up�Current�A� 130� 145�

Max.�Running�Current�A� 21.1� 24.8�

Refrigerant�Type� R407c�

Charge�(kg)� 26� 24.8� 29� 26�

Evaporator�

Type� Brazed�Plate�Heat�Exchanger�

Water�Flow�Rate�(L/s)� 6.0� 6.8�

Water�Pressure�Drop�(kPa)� 52�

Fouling�Factor�(m2k/kW)� 0.086�

Max�Working�Pressure�Water�(kPa)� 2.0�

Condenser�

Type� Coil�

Type�of�Fan� Axial�Fan�

No.�of�Fan� 4�

Fan�Power�Input�(kW)� 1.1�x�4�

Air�Flow�Rate�(m3/h)� 56000� 60000�

Water�Connection� 6”�

Dimension�(L�x�W�x�H)�mm� 1800�x�1800�x�2050�

Operation�Weight�(kg)� 1500� 1460� 1520� 1480�

Shipping�Weight�(kg)� 1600� 1560� 1620� 1580�

Model

Cooling

Heating

Compressor

Refrigerant

Evaporator

Condenser

131H 131C 150H 150C

Issue: 2.0 Date 07/08

2000

Control Stages 0-50-100

24 23.4

0.018

Page 11: MSRA SERIES

R407c – MSRA290 | MSRA340

Cooling: Ambient 35ºC Heating: Ambient 7ºC DB / 6ºC WB

Chilled Water Entering Temp. 12ºC Hot Water Entering Temp 40ºC

Chilled Water Leaving Temp. 7ºC Hot Water Leaving Temp. 45ºC

Nominal Values based on:

Note: Minimum Chilled Water Flow Rate per module: Nominal Water Flow Rate less 10%

Contact nearest authorised agent if lower flow rate is required.

Model� 290H� 290C� 340H� 340C�

Cooling�Nominal�Cooling�Capacity�(kW)� 272� 322�

Compressor�Power�Input�(kW)� 93.8� 98.4�

Heating�Nominal�Heating�Capacity�(kW)� 302� �� 346� ��

Compressor�Power�Input�(kW)� 92.4� �� 97.6� ��

Compressor�

Type� Hermetic�Scroll�

Number� 4�

Power� 380�420V�/�50Hz�/�3�Phase�

Start�Up�Current�A� 250� 270�

Max.�Running�Current�A� 46.1� 48.5�

Refrigerant�Type� R407c�

Charge�(kg)� 73.6� 57.6� 82.8� 64.8�

Evaporator�

Type� Brazed�Plate�Heat�Exchanger�

Water�Flow�Rate�(L/s)� 13.0� 15.4�

Water�Pressure�Drop�(kPa)� 55�

Fouling�Factor�(m2k/kW)� 0.086�

Max�Working�Pressure�Water�(kPa)� 2.0�

Condenser�

Type� Coil�

Type�of�Fan� Axial�Fan�

No.�of�Fan� 4�

Fan�Power�Input�(kW)� 2.2�x�4�

Air�Flow�Rate�(m3/h)� 120000� 128000�

Water�Connection� 8”�

Dimension�(L�x�W�x�H)�mm� 2300�x�2200�x�2240�

Operation�Weight�(kg)� 2540� 2450� 2550� 2460�

Shipping�Weight�(kg)� 2650� 2560� 2660� 2570�

Model

Cooling

Heating

Compressor

Refrigerant

Evaporator

Condenser

290H 290C 340H 340C

9

Issue: 2.0 Date 07/08

2000

Control Stages 0-50-100

0.018

Page 12: MSRA SERIES

R134a - MSRA131 | MSRA150 | MSRA290

Cooling: Ambient 35ºC Heating: Ambient 7ºC DB / 6ºC WB

Chilled Water Entering Temp. 12ºC Hot Water Entering Temp 40ºC

Chilled Water Leaving Temp. 7ºC Hot Water Leaving Temp. 45ºC

Nominal Values based on:

Note: Minimum Chilled Water Flow Rate per module: Nominal Water Flow Rate less 10%

Contact nearest authorised if lower flow rate is required.

Model� 131H� 131C� 150H� 150C� 290H� 290C�

Cooling�Nominal�Cooling�Capacity�(kW)� 91� 101� 197�

Compressor�Power�Input�(kW)� 33.6� 35.0� 70.1�

Heating�Nominal�Heating�Capacity�(kW)� 97.5� �� 106.2� �� 209� ��

Compressor�Power�Input�(kW)� 33.5� �� 34.7� �� 69.0� ��

Compressor�

Type� Hermetic�Scroll�

Number� 4�

Power� 380�420V�/�50Hz�/�3�Phase�

Start�Up�Current�A� 130� 145� 250�

Max.�Running�Current�A� 20.4� 20.6� 38.8�

Refrigerant�Type� R22�

Charge�(kg)� 27.6� 26.0� 30.4� 27.6� 77.8� 60.8�

Evaporator�

Type� Brazed�Plate�Heat�Exchanger�

Water�Flow�Rate�(L/s)� 4.4� 4.8� 9.4�

Water�Pressure�Drop�(kPa)� 52�

Fouling�Factor�(m2k/kW)� 0.086�

Max�Working�Pressure�Water�(kPa)� 2.0�

Condenser�

Type� Coil�

Type�of�Fan� Axial�Fan�

No.�of�Fan� 4�

Fan�Power�Input�(kW)� 1.1�x�4� 2.2�x�4�

Air�Flow�Rate�(m3/h)� 50000� 54000� 90000�

Water�Connection� 6”� 8”�

Dimension�(L�x�W�x�H)�mm� 1800�x�1800�x�2050� 2300x2200x2240�

Operation�Weight�(kg)� 1500� 1460� 1520� 1480� 2500� 2410�

Shipping�Weight�(kg)� 1600� 1660� 1620� 1580� 2610� 2520�

Model

Cooling

Heating

Compressor

Refrigerant

Evaporator

Condenser

131H | 131C 150H | 150C 290H | 290C

Issue: 2.0 Date 07/08

2000

Control Stages 0-50-100

0.018

27.4 24.6

Page 13: MSRA SERIES

Pressure�drop�correction�factor�for�chilled�and�condenser�water�circuit�

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

80 85 90 95 100 105 110 115 120

corr

ectio

n fa

ctor

Standard flow %

Pressure�drop�correction�factor:�k�related�to�the�modules’�number:�n�of�the�chiller�bank�

N� 0.5~3.0� 3.5~4.0� 4.5� 5.0� 5.5� 6.0� 6.5� 7.0� 7.5� 8.0� 8.5� 9.0� 9.5� 10.0�

131&150� 1.00� 1.01� 1.02� 1.02� 1.03� 1.03� 1.04� 1.05� 1.06� 1.07� 1.08� 1.09� 1.11� 1.11�

290&340� 1.00� 1.02� 1.03� 1.03� 1.04� 1.04� 1.05� 1.06� 1.07� 1.08� 1.09� 1.10� 1.12� 1.14�

Heat Exchanger Water Pressure Drop

5.04.50.5~3.0 3.5~4.0N

131 & 150

290 & 340

5.5 6.0 6.5 7.0 7.5 8.5 9.0 9.5 10.58.0

11

Page 14: MSRA SERIES

Unit Capacity Per ModuleUnit Capacity Per Module –SRA131C

CAP Cooling Capacity (kW)

PI Compressor Power input (kW)

Note:

� � � �

Ambient�Air�Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � Leaving�Chilled�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

5� 6� 7� 8� 10� 12�

CAP� PI� CAP� PI� CAP� PI� CAP� PI� CAP� PI� CAP� PI�

25� 130.9� � 34.8� � 135.9� � 34.8� � 143.5� 34.9� � 148.8� 34.9� � 156.9� � 35.0� � 168.1� 35.0� �

30� 124.3� � 38.2� � 129.0� � 38.2� � 136.4� 38.3� � 141.5� 38.3� � 149.3� � 38.4� � 160.1� 38.4� �

35� 117.3� � 41.9� � 121.9� � 41.9� � 129.0� 42.0� � 133.8� 42.0� � 141.3� � 42.1� � 151.7� 42.1� �

40� 109.9� � 46.5� � 114.3� � 46.5� � 121.1� 46.6� � 125.8� 46.6� � 133.0� � 46.7� � 142.9� 46.7� �

45� 102.3� � 51.3� � 106.5� � 51.3� � 113.0� 51.4� � 117.4� 51.4� � 124.2� � 51.5� � 133.7� 51.5� �

Ambient�Air�Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Chilled�Water�Temperature�°C� � � � � � � � � � � � � � � � � R407c�

5� 6� 7� 8� 10� 12�

CAP� PI� CAP� PI� CAP� PI� CAP� PI� CAP� PI� CAP� PI�

25� 129.0� � 35.0� � 134.3� � 35.0� � 142.5� 35.1� � 148.2� 35.1� � 157.0� � 35.2� � 169.3� 35.2� �

30� 121.2� � 38.7� � 126.2� � 38.7� � 134.0� 38.8� � 139.4� 38.8� � 147.8� � 38.9� � 159.6� 38.9� �

35� 112.8� � 42.7� � 117.6� � 42.7� � 125.0� 42.8� � 130.1� 42.8� � 138.0� � 42.9� � 149.2� 42.9� �

40� 104.0� � 47.6� � 108.4� � 47.6� � 115.4� 47.7� � 120.2� 47.7� � 127.7� � 47.8� � 138.2� 47.8� �

45� 94.7� � 52.9� � 98.9� � 52.9� � 105.4� 53.0� � 109.8� 53.0� � 116.8� � 53.1� � 126.6� 53.1� �

Ambient�Air�Temp�°C�

R134a� � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Chilled�Water�Temperature�°C� � � � � � � � � � � � � � � � R134a�

5� 6� 7� 8� 10� 12�

CAP� PI� CAP� PI� CAP� PI� CAP� PI� CAP� PI� CAP� PI�

25� 92.7� � 28.0� � 96.7� � 28.0� � 103.1� 28.1� � 107.5� 28.1� � 114.4� � 28.2� � 124.1� 28.2� �

30� 87.2� � 30.6� � 91.0� � 30.6� � 97.1� � 30.7� � 101.2� 30.7� � 107.8� � 30.8� � 116.9� 30.8� �

35� 81.7� � 33.5� � 85.4� � 33.5� � 91.1� � 33.6� � 95.0� � 33.6� � 101.1� � 33.7� � 109.8� 33.7� �

40� 76.3� � 36.8� � 79.8� � 36.8� � 85.1� � 36.9� � 88.8� � 36.9� � 94.6� � 37.0� � 102.8� 37.0� �

45� 71.0� � 40.5� � 74.2� � 40.5� � 79.2� � 40.6� � 82.7� � 40.6� � 88.1� � 40.7� � 95.7� � 40.7� �

30

R22 ºC

ºC

40

30

R407c ºC

ºC

40

30

R134a ºC

ºC

40

Page 15: MSRA SERIES

CAP Heating Capacity (kW)

PI Compressor Power input (kW)

Note:

� � � �

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 158.1� � 34.2� � 155.0� � 37.6� � 151.9� � 41.6� � 149.0� � 45.7� � 146.4� � 50.4� �

10� 144.2� � 34.2� � 141.6� � 37.6� � 139.1� � 41.6� � 136.8� � 45.7� � 134.8� � 50.4� �

7� 139.8� � 34.1� � 137.4� � 37.5� � 135.0� � 41.5� � 132.9� � 45.6� � 131.1� � 50.3� �

5� 135.5� � 34.1� � 133.2� � 37.5� � 131.1� � 41.5� � 129.2� � 45.6� � � �

0� 119.3� � 34.0� � 117.6� � 37.4� � 116.1� � 41.4� � � � � �

�5� 104.7� � 34.0� � 103.5� � 37.4� � � � � � � �

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 154.9� � 34.7� � 151.1� � 38.4� � 147.1� � 42.7� � 143.3� � 47.3� � 139.6� � 52.5� �

10� 140.5� � 34.7� � 137.3� � 38.4� � 134.1� � 42.7� � 131.0� � 47.3� � 128.1� � 52.5� �

7� 136.0� � 34.6� � 133.0� � 38.3� � 130.0� � 42.6� � 127.2� � 47.2� � 124.5� � 52.4� �

5� 131.6� � 34.6� � 128.8� � 38.3� � 126.1� � 42.6� � 123.4� � 47.2� � � �

0� 115.1� � 34.5� � 113.1� � 38.2� � 111.2� � 42.5� � � � � �

�5� 100.5� � 34.5� � 99.1� � 38.2� � � � � � � �

Ambient�Air�

Temp�°C�

R134a� � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R134a�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 116.2� � 28.0� � 113.4� � 30.6� � 110.9� � 33.6� � 108.8� � 36.8� � 107.1� � 40.5� �

10� 104.8� � 28.0� � 102.5� � 30.6� � 100.6� � 33.6� � 99.1� � 36.8� � 98.1� � 40.5� �

7� 101.2� � 27.9� � 99.2� � 30.5� � 97.5� � 33.5� � 96.1� � 36.7� � 95.3� � 40.4� �

5� 97.7� � 27.9� � 95.9� � 30.5� � 94.4� � 33.5� � 93.2� � 36.7� � 92.5� � 40.4� �

0� 85.0� � 27.8� � 83.9� � 30.4� � 83.0� � 33.4� � 82.5� � 36.6� � � �

�5� 74.0� � 27.8� � 73.4� � 30.4� � 73.1� � 33.4� � � � � �

ºC

ºC

7

ºC

ºC

7

ºC

ºC

7

Page 16: MSRA SERIES

CAP Cooling Capacity (kW)

PI Compressor Power input (kW)

Note:

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 149.7� � 38.5� 155.3� � 38.5� 163.9� 38.6� 169.9� 38.6� 179.1� � 38.7� � 192.0� 38.7� �

30� 142.5� � 42.2� 147.9� � 42.2� 156.2� 42.3� 162.0� 42.3� 170.9� � 42.4� � 183.3� 42.4� �

35� 134.8� � 46.4� 140.0� � 46.4� 148.0� 46.5� 153.5� 46.5� 162.0� � 46.6� � 173.9� 46.6� �

40� 126.9� � 51.2� 131.8� � 51.2� 139.4� 51.3� 144.7� 51.3� 152.9� � 51.4� � 164.3� 51.4� �

45� 118.7� � 56.5� 123.4� � 56.5� 130.6� 56.6� 135.7� 56.6� 143.4� � 56.7� � 154.3� 56.7� �

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 146.5� � 37.5� 152.5� � 37.5� 161.8� 37.6� 168.2� 37.6� 178.2� � 37.7� � 192.3� 37.7� �

30� 138.0� � 41.5� 143.7� � 41.5� 152.6� 41.6� 158.7� 41.6� 168.3� � 41.7� � 181.6� 41.7� �

35� 129.2� � 45.9� 134.6� � 45.9� 143.0� 46.0� 148.8� 46.0� 157.8� � 46.1� � 170.5� 46.1� �

40� 120.1� � 51.1� 125.1� � 51.1� 133.0� 51.2� 138.5� 51.2� 147.0� � 51.3� � 158.9� 51.3� �

45� 110.6� � 56.9� 115.3� � 56.9� 122.7� 57.0� 127.8� 57.0� 135.7� � 57.1� � 146.9� 57.1� �

Ambient�Air�

Temp�°C�

R134a� � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R134a�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 102.1� � 29.4� 106.4� � 29.4� 113.2� 29.5� 117.8� 29.5� 125.1� � 29.6� � 135.2� 29.6� �

30� 96.6� � 32.0� 100.7� � 32.0� 107.2� 32.1� 111.7� 32.1� 118.6� � 32.2� � 128.3� 32.2� �

35� 90.7� � 34.9� 94.7� � 34.9� 101.0� 35.0� 105.2� 35.0� 111.8� � 35.1� � 121.1� 35.1� �

40� 84.6� � 38.1� 88.4� � 38.1� 94.3� � 38.2� 98.4� � 38.2� 104.7� � 38.3� � 113.5� 38.3� �

45� 78.3� � 41.7� 81.9� � 41.7� 87.4� � 41.8� 91.3� � 41.8� 97.2� � 41.9� � 105.6� 41.9� �

ºC

ºC

ºC

ºC

ºC

ºC

Page 17: MSRA SERIES

� � � �

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 182.1� � 38.1� � 178.7� � 41.7� � 175.2� � 45.9� � 172.0� � 50.6� � 169.2� � 55.9� �

10� 166.3� � 38.1� � 163.4� � 41.7� � 160.6� � 45.9� � 158.1� � 50.6� � 156.0� � 55.9� �

7� 161.2� � 38.0� � 158.6� � 41.6� � 156.0� � 45.8� � 153.7� � 50.5� � 151.9� � 55.8� �

5� 156.4� � 38.0� � 153.9� � 41.6� � 151.5� � 45.8� � 149.4� � 50.5� � � �

0� 138.1� � 37.9� � 136.4� � 41.5� � 134.8� � 45.7� � � � � �

�5� 121.9� � 37.9� � 120.7� � 41.5� � � � � � � �

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 177.5� � 37.1� � 173.1� � 41.0� � 168.8� � 45.5� � 164.8� � 50.5� � 161.1� � 56.2� �

10� 160.7� � 37.1� � 157.1� � 41.0� � 153.7� � 45.5� � 150.6� � 50.5� � 147.9� � 56.2� �

7� 155.5� � 37.0� � 152.1� � 40.9� � 149.0� � 45.4� � 146.1� � 50.4� � 143.8� � 56.1� �

5� 150.3� � 37.0� � 147.2� � 40.9� � 144.4� � 45.4� � 141.8� � 50.4� � � �

0� 131.4� � 36.9� � 129.2� � 40.8� � 127.3� � 45.3� � � � � �

�5� 114.7� � 36.9� � 113.3� � 40.8� � � � � � � �

Ambient�Air�

Temp�°C�

R134a� � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R134a�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 127.1� � 29.4� � 124.1� � 32.0� � 121.2� � 34.8� � 118.4� � 38.1� � 115.7� � 41.7� �

10� 114.7� � 29.4� � 112.2� � 32.0� � 109.8� � 34.8� � 107.5� � 38.1� � 105.4� � 41.7� �

7� 110.8� � 29.3� � 108.5� � 31.9� � 106.2� � 34.7� � 104.1� � 38.0� � 102.2� � 41.6� �

5� 107.0� � 29.3� � 104.8� � 31.9� � 102.7� � 34.7� � 100.8� � 38.0� � 99.1� � 41.6� �

0� 92.9� � 29.2� � 91.2� � 31.8� � 89.8� � 34.6� � 88.5� � 37.9� � � �

�5� 80.4� � 29.2� � 79.2� � 31.8� � 78.3� � 34.6� � � � � �

Unit Heating Capacity Per Module – SRA150H

15

10

R22 Leaving Hot Water Temperature ºCAmbient Air

Temp ºC

7

5

0

-5

CAP Heating Capacity (kW)

PI Compressor Power input (kW)

Note:

15

10

R407c Leaving Hot Water Temperature ºCAmbient Air

Temp ºC

7

5

0

-5

15

10

R134a Leaving Hot Water Temperature ºCAmbient Air

Temp ºC

7

5

0

-5

15

Page 18: MSRA SERIES

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 292.1� � 79.0� 303.2� � 79.0� 320.4� 79.1� 332.3� 79.1� 350.8� � 79.2� � 376.5� 79.2� �

30� 277.5� � 85.7� 288.2� � 85.7� 304.7� 85.8� 316.1� 85.8� 333.7� � 85.9� � 358.4� 85.9� �

35� 262.1� � 93.9� 272.2� � 93.9� 288.0� 94.0� 298.9� 94.0� 315.7� � 94.1� � 339.3� 94.1� �

40� 246.2� � 101.6� � 255.8� � 101.6� 270.8� 101.7� 281.1� 101.7� 297.1� � 101.8� � 319.6� 101.8�

45� 229.9� � 111.1� � 239.0� � 111.1� 253.2� 111.2� 262.9� 111.2� 278.1� � 111.3� � 299.4� 111.3�

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 277.5� � 77.1� 288.7� � 77.1� 306.1� 77.2� 318.2� 77.2� 336.9� � 77.3� � 363.2� 77.3� �

30� 262.3� � 84.7� 273.0� � 84.7� 289.7� 84.8� 301.2� 84.8� 319.1� � 84.9� � 344.2� 84.9� �

35� 246.1� � 93.7� 256.2� � 93.7� 272.0� 93.8� 282.9� 93.8� 299.9� � 93.9� � 323.8� 93.9� �

40� 228.9� � 102.5� � 238.4� � 102.5� 253.3� 102.6� 263.6� 102.6� 279.6� � 102.7� � 302.1� 102.7�

45� 210.8� � 113.0� � 219.8� � 113.0� 233.6� 113.1� 243.3� 113.1� 258.3� � 113.2� � 279.4� 113.2�

Ambient�Air�

Temp�°C�

R134a� � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R134a�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 199.4� � 59.1� 207.9� � 59.1� 221.2� 59.2� 230.4� 59.2� 244.7� � 59.3� � 264.9� 59.3� �

30� 188.4� � 64.2� 196.5� � 64.2� 209.1� 64.3� 217.9� 64.3� 231.6� � 64.4� � 250.9� 64.4� �

35� 177.0� � 70.0� 184.7� � 70.0� 197.0� 70.1� 205.1� 70.1� 218.2� � 70.2� � 236.6� 70.2� �

40� 165.5� � 75.8� 172.8� � 75.8� 184.2� 75.9� 192.1� 75.9� 204.4� � 76.0� � 221.9� 76.0� �

45� 153.8� � 82.5� 160.6� � 82.5� 171.3� 82.6� 178.8� 82.6� 190.4� � 82.7� � 206.9� 82.7� �

Unit Capacity Per Module – SRA290C

25

30

R22 Leaving Chilled Water Temperature ºCAmbient Air

Temp ºC

35

40

45

25

30

R407c Leaving Chilled Water Temperature ºCAmbient Air

Temp ºC

35

40

45

25

30

R134a Leaving Chilled Water Temperature ºCAmbient Air

Temp ºC

35

40

45

CAP Cooling Capacity (kW)

PI Compressor Power input (kW)

Note:

Page 19: MSRA SERIES

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 355.0� � 79.3� � 347.5� � 86.1� � 340.1� � 92.5� � 333.1� � 102.1� � 326.8� � 111.7� �

10� 323.4� � 79.3� � 317.2� � 86.1� � 311.2� � 92.5� � 305.6� � 102.1� � 301.0� � 111.7� �

7� 313.4� � 79.2� � 307.7� � 86.0� � 302.1� � 92.4� � 297.0� � 102.0� � 292.8� � 111.6� �

5� 303.8� � 79.2� � 298.4� � 86.0� � 293.3� � 92.4� � 288.7� � 102.0� � � �

0� 267.8� � 79.1� � 264.1� � 85.9� � 260.6� � 92.3� � � � � �

�5� 236.1� � 79.1� � 233.7� � 85.9� � � � � � � �

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 342.8� � 77.9� � 335.6� � 85.7� � 328.1� � 93.3� � 320.7� � 103.8� � 313.5� � 114.3� �

10� 311.0� � 77.9� � 305.1� � 85.7� � 299.1� � 93.3� � 293.2� � 103.8� � 287.8� � 114.3� �

7� 301.0� � 77.8� � 295.5� � 85.6� � 290.0� � 93.2� � 284.6� � 103.7� � 279.7� � 114.2� �

5� 291.3� � 77.8� � 286.2� � 85.6� � 281.2� � 93.2� � 276.3� � 103.7� � � �

0� 255.3� � 77.7� � 251.8� � 85.5� � 248.4� � 93.1� � � � � �

�5� 223.6� � 77.7� � 221.4� � 85.5� � � � � � � �

Ambient�Air�

Temp�°C�

R134a� � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R134a�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 249.6� � 59.1� � 243.7� � 64.2� � 237.9� � 69.1� � 232.5� � 75.8� � 227.5� � 82.5� �

10� 225.4� � 59.1� � 220.5� � 64.2� � 215.8� � 69.1� � 211.5� � 75.8� � 207.6� � 82.5� �

7� 217.9� � 59.0� � 213.3� � 64.1� � 208.9� � 69.0� � 204.9� � 75.7� � 201.4� � 82.4� �

5� 210.5� � 59.0� � 206.3� � 64.1� � 202.2� � 69.0� � 198.6� � 75.7� � 195.5� � 82.4� �

0� 183.6� � 58.9� � 180.5� � 64.0� � 177.7� � 68.9� � 175.3� � 75.6� � � �

�5� 160.1� � 58.9� � 158.0� � 64.0� � 156.2� � 68.9� � � � � �

Unit Heating Capacity Per Module – SRA290H

15

10

R22 Leaving Hot Water Temperature ºCAmbient Air

Temp ºC

7

5

0

-5

15

10

R407c Leaving Hot Water Temperature ºCAmbient Air

Temp ºC

7

5

0

-5

15

10

R134a Leaving Hot Water Temperature ºCAmbient Air

Temp ºC

7

5

0

-5

CAP Heating Capacity (kW)

PI Compressor Power input (kW)

Note:

17

Page 20: MSRA SERIES

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 337.1� � 83.4� 350.1� � 83.4� 370.3� 83.5� 384.2� 83.5� 405.8� � 83.6� � 436.0� 83.6� �

30� 320.0� � 90.4� 332.4� � 90.4� 351.7� 90.5� 365.0� 90.5� 385.7� � 90.6� � 414.6� 90.6� �

35� 301.9� � 99.1� 313.7� � 99.1� 332.1� 99.2� 344.8� 99.2� 364.5� � 99.3� � 392.1� 99.3� �

40� 283.3� � 107.1� � 294.5� � 107.1� 311.9� 107.2� 323.9� 107.2� 342.6� � 107.3� � 368.9� 107.3�

45� 264.3� � 117.1� � 274.9� � 117.1� 291.3� 117.2� 302.6� 117.2� 320.3� � 117.3� � 345.1� 117.3�

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � Leaving�Chiller�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

5� 6� 7� 8� 10� 12�

CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI� CAPC� PI�

25� 327.1� � 80.2� 340.0� � 80.2� 360.2� 80.3� 374.2� 80.3� 395.9� � 80.4� � 426.2� 80.4� �

30� 310.3� � 88.6� 322.7� � 88.6� 342.0� 88.7� 355.4� 88.7� 376.2� � 88.8� � 405.3� 88.8� �

35� 291.8� � 98.3� 303.6� � 98.3� 322.0� 98.4� 334.7� 98.4� 354.5� � 98.5� � 382.3� 98.5� �

40� 271.9� � 107.5� � 283.0� � 107.5� 300.3� 107.6� 312.3� 107.6� 331.0� � 107.7� � 357.3� 107.7�

45� 250.6� � 118.3� � 261.0� � 118.3� 277.2� 118.4� 288.4� 118.4� 305.9� � 118.5� � 330.5� 118.5�

Unit Capacity Per Module – SRA340C

25

30

R22 Leaving Chilled Water Temperature ºCAmbient Air

Temp ºC

35

40

45

25

30

R407c Leaving Chilled Water Temperature ºCAmbient Air

Temp ºC

35

40

45

CAP Cooling Capacity (kW)

PI Compressor Power input (kW)

Note:

Page 21: MSRA SERIES

Ambient�Air�

Temp�°C�

R22� � � � � � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R22�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 411.4� � 84.1� � 401.4� � 91.2� � 391.3� � 97.7� � 381.7� � 108.0� � 372.8� � 118.1� �

10� 373.6� � 84.1� � 365.2� � 91.2� � 356.9� � 97.7� � 349.1� � 108.0� � 342.2� � 118.1� �

7� 361.7� � 84.0� � 353.9� � 91.1� � 346.1� � 97.6� � 338.9� � 107.9� � 332.6� � 118.0� �

5� 350.2� � 84.0� � 342.9� � 91.1� � 335.6� � 97.6� � 329.0� � 107.9� � � �

0� 307.5� � 83.9� � 302.1� � 91.0� � 297.0� � 97.5� � � � � �

�5� 270.0� � 83.9� � 266.3� � 91.0� � � � � � � �

Ambient�Air�

Temp�°C�

R407c� � � � � � � � � � � � � � � � � � � � � � � � � Leaving�Hot�Water�Temperature�°C� � � � � � � � � � � � � � � � � � � R407c�

35� 40� 45� 50� 55�

CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI� CAPH� PI�

15� 398.7� � 80.9� � 390.3� � 89.3� � 381.0� � 97.3� � 371.0� � 108.4� � 360.7� � 119.3� �

10� 361.4� � 80.9� � 354.5� � 89.3� � 346.8� � 97.3� � 338.6� � 108.4� � 330.4� � 119.3� �

7� 349.7� � 80.8� � 343.3� � 89.2� � 336.1� � 97.2� � 328.5� � 108.3� � 320.8� � 119.2� �

5� 338.3� � 80.8� � 332.3� � 89.2� � 325.6� � 97.2� � 318.6� � 108.3� � � �

0� 296.2� � 80.7� � 291.8� � 89.1� � 287.0� � 97.1� � � � � �

�5� 259.1� � 80.7� � 256.0� � 89.1� � � � � � � �

Unit Heating Capacity Per Module – SRA340H

CAP Heating Capacity (kW)

PI Compressor Power input (kW)

Note:

R22 ºC

ºC

7

0

R407c ºC

ºC

7

0

Page 22: MSRA SERIES

(2) Actual water pressure drop

69.5 ÷ 82.8 = 84%

Use the chart “Pressure Drop Correction Factor for chilled and

condenser water Circuit”, 6 modules of MSRA290H the correction ξ

is 0.71 for 84% of water flow.

Use the table « Pressure drop correction factor: k », k=1.04 for the

configuration: 6 modules of MSRA290H

Actual condenser water pressure drop is:

55 × 0.71 x 1.04 = 41 kPa

(Contact Multistack if lower flow rate is required.)

Select air-cooled chiller according to following conditions:

Calculation

Chiller Selection1. Entering Chilled Water temperature (ECHW)……..……..……..……...12.5°C

2. Leaving Chilled Water temperature (LCHW)…..……..……..……..…...7°C

3. Chilled Water Flow (CHWF)………………………..…..……..……..….69.5 l/s

4. Ambient Temperature (AT)…………………………….….……..…….35.0°C

5. Leaving Hot Water temperature (HWLT)…………...……..……..…….45.0°C

6. Entering Hot Water temperature (HWET)……...….……..……..……...40.0°C

7. Hot Water Flow Rate……….......……..……..……..……..……..…..….. HWF=220m3/h=61.1 l/s

8. Ambient Temperature (AT)……………..……………..…...……..…….0.0°C

9. Refrigerant……………………………..………………………………R22

10. Power…………………………….……..……..……..……..……..…… AC380V±10%/ 50Hz/ 3phz

1. Determine cooling capacity required (kW)

Cooling Capacity

= CHWF × 4.187 ×(ECHW - LCHW)

= 69.5 × 4.187 ×(12.5-7)

= 1600 kW required

Heating Capacity

= HWF × 4.187 ×(HWLT - HWET)

= 61.1 × 4.187 ×(45.0 – 40.0)

= 1279 kW required

2. From capacity chart above,

1 module at stated conditions will achieve;

Cooling CAP= 288 kW per MSRA290H module

Heating CAP= 260.6 kW per MSRA290H module

Divide the required capacity by achieved capacity at specified conditions

to determine required number of modules:

= 1600 kW required = 5.6 modules

288 kW achieved

Select 6 modules of MSRA290H

Cooling Capacity of 6 modules = 6 x 288 = 1728kW

Heating Capacity of 6 modules = 6 x 260.6 = 1564kW

3. To establish Water Flow per module, divede new CHWF

by number of modules:

(1) Nominal Water flow

= 6 x 13.8

= 82.8 l/s

Chilled Water Pressure Drop for nominal water flow per module is 55kPa

Page 23: MSRA SERIES

�Model� MSRA131H� MSRA131C� MSRA131H� MSRA131C� MSRA131H� MSRA131C�

Refrigerant� R22� R407C� R134a�

Power� AC380±10%V/3Ph/50Hz�

Compressor�

(each)�

MCC A � 25.0� 25.0� 32�

MRC A � 21.1� 21.7� 20.4�

LRA A � 120� 120� 145�

RLA A �Cooling� 17.9� 17.9� 18.2� 18.2� 13.9� 13.8�

Heating� 17.7� —� 18.1� —� 13.8� —�

Fan�(each)� RLA A � 2.56�

STC A � 10.2�

MSC� 4×N�1 ×MRC+LRA�

�Model� MSRA150H� MSRA150C� MSRA150H� MSRA150C� MSRA150H� MSRA150C�

Refrigerant� R22� R407C� R134a�

Power� AC380±10%V/3Ph/50Hz�

Compressor�

(each)�

MCC A � 32� 32� 38�

MRC A � 24.8� 25.9� 20.6�

LRA A � 145� 145� 145�

RLA A �Cooling� 20.0� 20.0� 19.8� 19.8� 14.5� 14.5�

Heating� 19.7� —� 19.5� —� 14.4� —�

Fan�(each)� RLA A � 2.74�

STC A � 10.2�

MSC� 4×N�1 ×MRC+LRA�

�Model� MSRA290H� MSRA290C� MSRA290H� MSRA290C� MSRA290H� MSRA290C�

Refrigerant� R22� R407C� R134a�

Power� AC380±10%V/3Ph/50Hz�

Compressor�

(each)�

MCC A � 111� 111� 88�

MRC A � 92� 92.1� 77.6�

LRA A � 500� 500� 540�

RLA A �80.9� 80.9� 80.9� 80.7� 80.7� 58.2� 58.2�

79.4� 79.4� —� 80.1� —� 57.2� —�

Fan�(each)� RLA A � 3.87�

STC A � 13.7�

MSC� 4×N�1 ×MRC+LRA�

Electrical Data Per Module

Notes:

N: No. of modules

MCC: Maximum Continuous Current LRA: Locked Rotor Amperage MSC: Maximum Starting Current

MRC: Maximum Rated Current RLA: Rating Load Amperage STC: Starting Current

R22

MSRA131H MSRA131C MSRA131H MSRA131C MSRA131H MSRA131C

R407c R134a

R22

MSRA150H MSRA150C MSRA150H MSRA150C MSRA150H MSRA150C

R407c R134a

R22

MSRA290H MSRA290C MSRA290H MSRA290C MSRA290H MSRA290C

R407c R134a

Model

Refrigerant

Power

MCC (A)

MRC (A)

LRA (A)

Cooling

Heating

RLA (A)

STC (A)

MSC

Fan (each)

RLA (A)

Compressor(each)

Model

Refrigerant

Power

MCC (A)

MRC (A)

LRA (A)

Cooling

Heating

RLA (A)

STC (A)

MSC

Fan (each)

RLA (A)

Compressor(each)

Model

Refrigerant

Power

MCC (A)

MRC (A)

LRA (A)

Cooling

Heating

RLA (A)

STC (A)

MSC

Fan (each)

RLA (A)

Compressor(each)

21

Issue: 2.0 Date 07/08

Page 24: MSRA SERIES

Electrical Data Per Module

No.�of�Modules�Mains�Termination�

Location Connection�Procedure0.5���10� Half�Module�Electrical�Cubicle� Terminal�Block�

1.5���10� Half�Module�Electrical�Cubicle Terminal�Block

N=0.5�1�

N�10�

1.5-10

Mains TerminationLocation

0.5 - 10.0

No. of ModulesConnection Procedure

�Model� MSRA340H� MSRA340C� MSRA340H� MSRA340C�

Refrigerant� R22� R407c�

Power� AC380±10%V/3Ph/50Hz�

Compressor�

(each)�

MCC A � 115� 115�

MRC A � 98.3� 96.9�

LRA A � 540� 540�

RLA A �Cooling� 85.8� 85.8� 85.1� 85.1�

Heating� 84.3� —� 83.9� —�

Fan�(each)� RLA A � 4.13�

STC A � 13.7�

MSC� 4×N�1 ×MRC+LRA�

MSRA290H Model

Refrigerant

Power

MCC (A)

MRC (A)

LRA (A)

Cooling

Heating

RLA (A)

STC (A)

MSC

Fan (each)

RLA (A)

Compressor(each)

MSRA290C

R22

MSRA340H MSRA340C

R407c

Notes:

N: No. of modules

MCC: Maximum Continuous Current L RA: Locked Rotor Amperage MSC: Maximum Starting Current

MRC: Maximum Rated Current RLA: Rating Load Amperage STC: Starting Current

1. MSRA131 & 150 Termination Connection

Issue: 2.0 Date 07/08

Electrical Box and related wiring (prepared by user)

Elec

tric

al B

ox

AC380V50Hz3Ph

MULTISTACK MULTISTACK MULTISTACK MULTISTACK MULTISTACK MULTISTACK

Page 25: MSRA SERIES

Notes:

Supply 380v – 415V, 50Hz / 3 phase

1. Design running current is the steady state current draw at a particular set of conditions, ie ambient and chilled water temperatures.

2. Maximum rated current (MRC) is the maximum expected current draw at transient (pull down) and/or greater than design conditions.

CABLE SIZING

When selecting mains cable size use MRC. Allowances must be made for voltage imbalance, ambient temperature and other conditions in compli-

ance with AS 3000 or local relevant electrical codes.

MAINS TERMINATION

The termination for a full module is at a terminal block located in the back half module electrical housing. For a half only module, termination is at

the fuse holders or circuit breaker located in the electrical housing.

( To be supplied by customer )

2.MSRA290 & 340 Termination Connection

Model�Mains�Termination

Location Connection�Procedure�MSRA290�N�MSRA340�N�

Module�Electrical�Cubicle� Terminal�Block�

Mains TerminationLocation

0.5 - 10.0

No. of ModulesConnection Procedure

23

MULTISTACK MULTISTACK MULTISTACK

Electrical Boxand Related wiring (prepared by user)

AC380V50Hz3Ph

Page 26: MSRA SERIES

Field Wiring Diagram

Notes:

- Control wiring to be 18 AWG or 1.0 sqmm MINIMUM.

- Bridge between terminals T3 & T5 if EXT-1 is not utilised.

- Bridge between terminals T4 & T5 if EXT-2 is not utilised.

- Free contacts have a maximum rating of 5 Amps.

- Flow switches and external interlock devices are not supplied by Multistack

- Wiring by Multistack __________ / Wiring by Others ---------------

CHWF Chilled water flow switch

EXT1 External interlock device (Manual reset)

EXT2 External interlock device (Auto reset)

R Running Status

CWP Condenser water pump running status

CAR Customer fault alarm relay

CPR Compressor running status

CE Communication error

Page 27: MSRA SERIES

Physical DimensionsConfiguration : Back to Back (Standard) – SRA131 & 150�

�25

MV6

AC 220V

2 22

Wiring IN122 400

400300

MV6 Installation Hole

MV6 Dimensions & Installation

300

4 74440

75

STP CableMax. 300m

Page 28: MSRA SERIES

Configuration : End to end – SRA131 & 150 (for 131 & 150 only)�

Notes: (for all configurations)

1 All installations must have: No.60 Mesh Stainless steel strainers in water inlet piping.

2 Only one computer installed per chiller.

3 If chiller is to be expanded, computer and mains termination should be located so as to allow access after expansion.

4 Chiller to be mounted on 4 x 100sq. RHS positioned as shown (RHS not supplied by manufacturer.).

5 Rails must be mounted on machinery mounting pads (not supplied by manufacturer).

6 If unit is to be expanded in back-to back configuration a Minimum of 3000mm rear clearance is required.

7 Units expanded from 1 module to 1 ½ or more will require the fitting of mains termination external to the compressor electrical box.

Configuration : SRA290 & 340

MULTISTACK MULTISTACK MULTISTACK

Square Steel 120 x 120 x 84

2300

22001800305

320

305

2240

2300 x n Side minspace1m

Side minspace 1m

In

Out

Top minspace15m

Ventilated min space

2m

Rubber vibration absorber 120 x 120 x 10(intervals 300mm)

Page 29: MSRA SERIES

Piping Schematic

Item� Description� Qty�

1� Drain�valve�DN50� 2�

2� Temperature�sensor�socket�3/8’’� 2�

3� Vibration�eliminator� 2�

4� Pressure�gauge� 2�

5� Isolation�gate�valve� 4�

Item� Description� Qty�

6� Bypass�valve� 1�

7� Flow�switch� 1�

8� Water�pump� �

9� Strainer�25�mesh/inch� 1�

10� Pressure�differential�bypass�valve� 1�

27

2 43 5 6 7 8

9

9 101

Page 30: MSRA SERIES

Since MULTISTACK INTERNATIONAL LIMITED has a policy of continuous product improvement, it reserves the right to change design and specification without notice.

Multistack supplied by DunnAir international Limited (a wholly owned subsidiary of Multistack International Limited).

MULTISTACK INTERNATIONAL LIMITED

10 COCHRANES ROAD, MOORABBIN, VICTORIA 3189, AUSTRALIA

TELEPHONE: 61 3 8552 1200 FACSIMILE 61 3 8552 1201

Email: [email protected]

Web site: www.multistack.com.au