Download - 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
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
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
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”
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
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
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
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
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
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
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
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
�
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
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
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
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
� � � �
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
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:
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
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:
�
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
(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
�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
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
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
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
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
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)
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
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