Midea MGB Series User manual

Air-cooledmodularchillerunit50Hz MCAC-ATSM-2011-12
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Content
1 General information ................................................................................3
2. Features...................................................................................................5
3. Specification ...........................................................................................9
4 Dimension ..............................................................................................21
5 Refrigeration system drawing..............................................................33
6. Piping diagram......................................................................................36
7 Wiring diagrams.....................................................................................42
8 Electric characteristics .........................................................................56
9 Capacity tables ......................................................................................58
10 Exploded view......................................................................................74
11 Troubleshooting...................................................................................96
12 Installation..........................................................................................108
13 Commissioning..................................................................................132
14 Maintenance.......................................................................................135
15 Control system ..................................................................................137
Appendix .................................................................................................174

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1 General information
1.1Nomenclature
MG C TS L -D 60 W/ R N1- A
1.2 Product schedule
No Model Power supply Heat
exchanger type
Maximum
combinations
Maximum
capacity(kw) Wired controller
1 MGB-F25W/RN1 380~415V/3ph/50Hz Tube in tube 16 400 KJR-08B/BE
2 MGB-D25W/RN1 380~415V/3ph/50Hz Tube in tube 16 400 KJR-08B/BE
3 MGB-F30W/RN1 380~415V/3ph/50Hz Tube in tube 16 480 KJR-08B/BE
4 MGB-D30W/RN1 380~415V/3ph/50Hz Tube in tube 16 480 KJR-08B/BE
5 MGCSL-F30W/RN1
380~415V/3ph/50Hz Tube in tube 1 30 KJR-120A/MBE
6 MGCSL-D30W/RN1
380~415V/3ph/50Hz Tube in tube 1 30 KJR-120A/MBE
7 MGB-F55W/RN1 380~400V/3ph/50Hz Tube and shell 16 880 KJR-08B/BE
8 MGB-F60W/RN1 380~400V/3ph/50Hz Tube and shell 16 960 KJR-08B/BE
9 MGB-F65W/RN1 380~400V/3ph/50Hz Tube and shell 16 1040 KJR-08B/BE
10 MGB-D65W/RN1 380~415V/3ph/50Hz Tube and shell 16 1040 KJR-120A/MBE
11 MGB-F130W/RN1 380~400V/3ph/50Hz Tube and shell 8 1040 KJR-08B/BE
12 MGB-F185W/RN1 380~400V/3ph/50Hz Tube and shell 5 1000 KJR-08B/BE
13 MGBT-F250W/RN1 380~400V/3ph/50Hz Tube and shell 8 2000 KJR-120A/MBE
Design Serial Number
Refrigerant type
N1:R410A Omit for R22
Power Supply
R: 380~415V, 50Hz, 3N
D: 220V, 60Hz, 3N
Outdoor Unit
Rated cooling capacity (kw)
The special function code
D: Digital scroll
F: Constant feed
V: Inverter system
The special function code
S: Hydraulic mole
L: Low temperature cooling
H: Heat recovery
Omit for 10 - 46C
T: 10 - 52C
The heat exchanger type
A: Plate heat exchanger
B: Tube and shell
C: Tube in tube heat exchanger
Light chiller system
MDV

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1.3 External appearance:
25/30KW module
55/60/65KW module 130KW module
185KW module
New 30KW module
250KW module

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2. Features
1). Low ambient temperature cooling function (Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1)
The ambient temperature is down to -10℃in cooling mode, the cooling operating temperature up to 52˚C in
tropical model and heating down to -10˚C ambient by added one board (see picture1). Wide ambient
temperature range is selectable by adjustable address between different conditions to meet different
requirements.
Mode Ambient temp.
Cooling
Normally（S8 address OFF）10~46℃
T condition 10~52℃
※Low temp. (S8 address ON) -10~46℃
Heating -10~21℃
2). Wide range of outlet water temperature (For MGCSL-F(D)30W/RN1 ,MGB-D65W/RN1,
MGB-F250W/RN1)
Cooling: 5~17˚C (Set in factory), 0~17˚C can be available by switch the S5 on PCB, the antifreeze must be
put into pipeline.
Heating: 40~50˚C (Set in factory), 22~50˚C can be available by switch the address.
Mode Outlet water temp.
Cooling(S5 address) Normally(OFF) 5~17℃
Low water temp.(ON) 0~17℃
Heating(S4 address) Normally(OFF) 45~50℃
Low water temp. (ON) 22~50℃
3).Built-in hydraulic module (Only for MGCSL-F30W/RN1 and MGCSL-D30W/RN1)
The unit built-in hydraulic module to simplified installation, save space and beautification appearance,
simultaneous effectively reduce installation costs and covering area.
Y-shaped filiter
Fan coil unit
Fan coil unit
Fan coil unit
Fan coil unit
This figure for reference purpose only, please in terms of the design rule for field installation.
Water replenishing valve
Water pump
Water-flow valve
Safety valve
2-way valve
2-way valve
1.5kg<Water replenishing pres<6kg
Flexible joint
Flexible joint
Aux. heater
Thermometer
Manometer
Cutoff valve
auto-air exchanse valve
Flexible joint
Flexible joint
Expansion tank
Double
-pipe
heat
exchanger
Picture1
Picture2

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4).Humanization remote control (For MGCSL-F(D)30W/RN1 ,MGB-D65W/RN1, MGB-F250W/RN1)
S7 address on PCB should be switched to ON to realize remote
control, here are reliable: Remote ON/OFF, remote heating and
cooling mode selection, remote alarm. The customer can simply
and conveniently control the module and acquire the running
information on real time in door.
5)Digital scroll technique，new type modular air-cooled chiller
system.
Capacity output is controlled depending on controlling compressor to on/off in traditional modular air-cooled
chiller system control. The precision of the control mode is not very good, and the compressor is frequently
on and off, which is very bad for the compressor’s life.
Digital scroll modular air-cooled chiller system breaks traditional design, which is inconceivably designed
with digital scroll compressor and constant scroll compressor parallel connection. the system can achieve
linear capacity adjustment within 0.5%-100%,the scope is widest in industry. When the system operates at
the part-load, the system can accurately adjust cooling and heating capacity output basing on actual
requirement of the indoor room.
6).Modular design, flexible combination, more convenient for design and installation.
The unit adopt modular design, which can makes more unit connect together. The unit can combine 16
separate module(25,30.55.60.65KW module) or 8 module(250KW module).Cooling(heating) capacity can
increase step by step by 5KW per each time within 25kW-2000kW,meanwhile every separate module can
operate as main unit, also each module can be a slave unit with modules combination, more convenient for
design and installation.
7).The maximum combination of the system consists of 1 main unit and 15 slave units for
25,30.55.60 and 65KW module, 1 main unit and 7 slave units for 130KW module, 1 main unit and 4
slave units for 200KW module，1 main unit and 7 slave units for 250KW module.
Easy connection between main unit and slave units.
All the units can be connected together with a wired controller in series type. Using three-core shielded
twisted wire as communication wire.
Wired controller
Three-core shielding
twisted pair Three-core shielding
twisted pair
Water outlet temp. Water outlet temp. Water outlet temp.
Total water outlet temp.
(Just for master unit) Total water outlet temp.
(Just for master unit) Total water outlet temp.
(Just for master unit)
Max 8 modules
2000KW
250KW
250KW

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8).Environmental care
Ecological R410A refrigerant.
Chlorine-free and environmental friendly refrigerant, zero ozone depletion potential.
High density refrigerant, therefore, less refrigerant required.
Leak-tight refrigerant circuit, Brazed refrigerant connections for increased leak-tightness.
9) Economical operation
New design adopts electronic expansion valve precise refrigerant control in wider range. Electronic
expansion valve allows operation at lower condensing pressure, adjustment can be made fast linear
response, making the system more stable output, the indoor temperature more uniform, and enhance
human comfortable.
10).Compact structure
Air cooled modular chiller structure are compact, light weight. The system adopts tube in tube, shell and tube
heat exchanger, not only greatly enhanced the transfer performance, but also reduce the unit weight, the
lightest single module only has 380kg.
The characteristic of unit decided cooling tower is not needed, not only reduced installation costs, but also
resolved the cooling tower generated noise when running.
11).Back up function
When unit is failure
If master unit fails, all the units will stop.
If one slave unit fails, this unit will stop but the others will keep running.
When the master unit fails, any of the slave one can be set as the master unit by manual setting.
When unit is under protection
If master unit’s protection occurs, this unit will stop but the others will keep running.
If slave unit’s protection occurs, this unit will stop but the others will keep running.
( Except PE, P9 protection happen)
Master Slave
Master Slave
12).Strong micro-computer intelligent control and monitor function.
Optimizing the design of system and using varieties of protection devices, to make the system more safe
and reliable.
13). Superior reliability
System will be more reliable with new type efficient heat exchanger.

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Evaporator of 25KW and 30KW module adopts tube in tube heat exchanger，evaporator of 60kw ,120kw and
180kw modules adopt Shell and tube heat exchanger.
Tube in tube heat exchanger Shell and tube heat exchanger
14). Applicable temperature range
Mode Ambient temperature
range Water outlet temperature range Application module
Cooling 10˚C ~46˚C
5˚C ~17˚C (7˚C is default) The module with KJR-08B/BE
0~17˚C(0˚C must add antifreeze) For MGCSL-F(D)30W/RN1,MGBT-D65W/RN1,
MGBT-F250W/RN1
-10˚C ~46˚C 5˚C ~17˚C Only for MGCSL-F(D)30W/RN1
Heating -10˚C ~21˚C
45˚C ~50˚C (45˚C is default) The module with KJR-08B/BE
22˚C ~50˚C For MGCSL-F(D)30W/RN1,MGBT-D65W/RN1,
MGBT-F250W/RN1
Chilled outlet water temperature can be adjusted by wire controller according to customer’s demand.
-15˚C
Ambient temperature range
-10˚C -5˚C 0˚C 5˚C 10˚C 15˚C 20˚C 25˚C 30˚C 35˚C 40˚C 45˚C
Coo
lin
g
r
a
n
ge
1
0
˚
C
4
6
˚
C
Heating range -10˚C 21˚C
Water outlet temperature range
5˚C 17˚C 50˚C
5˚C 17˚C Heating range
Cooling range
45˚C
22˚C
0˚C
45˚C 50˚C
Cooling range
0˚C 17˚C Heating range
22˚C 50˚C
Cooling range-10˚C 46˚C

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3. Specification
Model MGB-F25W/RN1 MGB-F30W/RN1
Cooling Capacity
kW 28 30
Btu/h 95,500 102,300
Heating Capacity kW 29.5 32
Power supply V/Ph/Hz 380-415/3/50
Power supply
Manual switch A 50
Fuse A 36
Compressor
Type Scroll (constant speed)
Quantity Pieces 2
Model ZP67KCE-TFD-522
Brand Copeland
Capacity W 16200×2
Input W 5200×2
Rate current(RLA) A 9.1×2
Locked rotor Amp(LRA) A 74×2
Power input
Cooling kW 9.3 10.0
Cooling rated current A 14.6 16.3
Heating kW 9.2 9.8
Heating rated current A 14.3 16
Max. Input consumption A 12.6
Max. Current A 21.8
Refrigerant
Type R410a
Weight kg 3.5×2
Refrigerant control EXV+ capillary throttle
Condenser
(Air side)
Air side heat-exchanger type Copper-fin-coil
Quantity of fan motor Pieces 1
Air flow volume ×103m3/h 12
Fan motor input kW 0.3
Evaporator
(Water side)
Water side heat-exchanger type Tube in tube
Water resistance loss kPa 60
Water inlet/outlet pipeline inside
normal diameter
mm DN40
inch 1-1/2”
Water flow volume m3/h 4.4 5.2
Max. Pressure MPa 1
Water pipe connection type Flexible joint
Dimension
Net(W×H×D)
mm 1514×1865×841
inch 59.6×73.4×33.1
Packing(W×H×D)
mm 1590×2065×995
inch 62.6×81.3×39.2
Weight Net weight kg 380

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Note: Please refer to the water flow volume in the above table strictly to design and install.
All the above data is measured base on the following working condition:
1. cooling mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
7℃,air inlet temperature of condenser is 35℃;
2. heating mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
45℃,air inlet temperature of condenser is DB/WB 7/6℃.
Operation weight kg 400
Connection wire
Power wire mm2×No. 10×4+10×1
Signal wire mm2×No. 0.75×3-core
Control type Wired controller
Safety protection device
1) Protection for over-high discharge pressure.
2) Protection for over-low suction pressure.
3) Power supply phase sequence protection.
4) Anti-frozen protection in cooling mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over current.
7) Protection for compressor overload.
8) Outlet and inlet water temperature difference protection.
9) Compressor discharge temp. protection.
10) Water flow cut-off protection.
11) Sensor malfunction protection.
Noise level(semi-anechoic ) dB(A) 65
Operation water temp ℃Cooling：5～17 Heating：45～50
Ambient temp ℃Cooling：10～46
Heating：-10～21

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Model MGB-D25W/RN1 MGB-D30W/RN1
Cooling Capacity kW 28 30
Btu/h 95,500 102,300
Heating Capacity kW 29.5 32
Power supply V/Ph/Hz 380-415/3/50
Power supply Manual switch A 50
Fuse A 36
Compressor
Type Constant Speed Scroll + Digital Scroll
Quantity Pieces 1+1
Model ZP67KCE-TFD-522+
ZPD67KCE-TFD-532
Brand Copeland
Capacity W 16200+16200
Input W 5200+5260
Rate current(RLA) A 9.1+9.3
Locked rotor Amp(LRA) A 74+74
Power input
Cooling kW 9.3 10.0
Cooling rated current A 14.6 16.3
Heating kW 9.2 9.8
Heating rated current A 14.3 16
Max. Input consumption A 12.5
Max. Current A 21.5
Refrigerant
Type R410a
Weight kg 3.5×2
Refrigerant control EXV+ capillary throttle
Condenser
(Air side)
Air side heat-exchanger type Copper-fin-coil
Quantity of fan motor Pieces 1
Air flow volume ×103m3/h 12
Fan motor input kW 0.3
Evaporator
(Water side)
Water side heat-exchanger type Double-pipe heat exchanger
Water resistance loss kPa 60
Water inlet/outlet pipeline inside
normal diameter
mm DN40
inch 1-1/2”
Water flow volume m3/h 4.4 5.2
Max. Pressure MPa 1
Water pipe connection type Flexible joint
Dimension
Net(W×H×D) mm 1514×1865×841
inch 59.6×73.4×33.1
Packing(W×H×D) mm 1590×2065×995
inch 62.6×81.3×39.2
Weight Net weight kg 380
Operation weight kg 400
Connection wire Power wire mm2×No. 10×4+10×1
Signal wire mm2×No. 0.75×3-core
Control type Wired controller

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Note: Please refer to the water flow volume in the above table strictly to design and install.
All the above data is measured base on the following working condition:
1. cooling mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
7℃,air inlet temperature of condenser is 35℃;
2. heating mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
45℃,air inlet temperature of condenser is DB/WB 7/6℃.
Safety protection device
1) Protection for over-high discharge pressure.
2) Protection for over-low suction pressure.
3) Power supply phase sequence protection.
4) Anti-frozen protection in cooling mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over current.
7) Protection for compressor overload.
8) Outlet and inlet water temperature difference
protection
9) Compressor discharge temp. protection.
10) Water flow cut-off protection.
11) Sensor malfunction protection.
Noise level(semi-anechoic ) dB(A) 65
Operation water temp ℃Cooling：5～17 Heating：45～50
Ambient temp ℃Cooling：10～46 Heating：-10～21

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Model MGCSL-F30W/RN1 MGCSL-D30W/RN1
Cooling Capacity kW 30 30
Btu/h 102,300 102,300
Heating Capacity kW 32 32
Power supply V/Ph/Hz 380-415/3/50
Power supply Manual switch A 50
Fuse A 36
Compressor
Type Fixed speed Digital Scroll + Fixed speed
Quantity Pieces 1+1 1+1
Model ZP67KCE-TFD-522
ZPD67KCE-TFD-532/
ZP67KCE-TFD-522
Brand Copeland
Capacity W 16200×2
Input W 5200×2
Rate current(RLA) A 9.1×2
Locked rotor Amp(LRA) A 74×2
Power input
Cooling kW 10 10
Cooling rated current A 16.3 16.3
Heating kW 9.8 9.8
Heating rated current A 16 16
Max. Input consumption A 13.4
Max. Current A 22.5
Refrigerant
Type R410A
Weight kg 3.5×2
Refrigerant control EXV
Condenser
(Air side)
Air side heat-exchanger type Fin-coil
Quantity of fan motor Pieces 1
Air flow volume ×103m3/h 12
Fan motor input kW 0.55
Evaporator
(Water side)
Water side heat-exchanger type Double-pipe
Water resistance loss kPa /
Water inlet/outlet pipeline inside
normal diameter
mm DN40
inch 1-1/2”
Water flow volume m3/h 5.2 5.2
Max. Pressure MPa 1
Water pipe connection type Flexible joint
Dimension
Net(W×H×D) mm 1514×1865×841
inch 59.6×73.4×33.1
Packing(W×H×D) mm 1590×2065×995
inch 62.6×81.3×39.2
Weight Net weight kg 430
Operation weight kg 450
Connection wire Power wire mm2×No. 10×4+6×1
Signal wire mm2×No. 0.75×3-core with shielding
Control type Wired controller

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Note: Please refer to the water flow volume in the above table strictly to design and install.
All the above data is measured base on the following working condition:
1. cooling mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
7℃,air inlet temperature of condenser is 35℃;
2. heating mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
45℃,air inlet temperature of condenser is DB/WB 7/6℃.
Safety protection device
1) Protection for over-high discharge pressure.
2) Protection for over-low suction pressure.
3) Power supply phase sequence protection.
4) Anti-frozen protection in cooling mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over current.
7) Protection for compressor overload.
8) Outlet and inlet water temperature difference
protection.
9) Compressor discharge temp. protection.
10) Water flow cut-off protection.
11) Sensor malfunction protection.
12) Low ambient temperature drive-up protection
13) Low-temperature protection of shell-and-tube heat
exchanger.
Noise level(semi-anechoic ) dB(A) 67
Operation water temp ℃Cooling：0～17(0℃must add antifreeze)
Heating：22～50
Ambient temp ℃Cooling：-10～46
Heating：-10～21

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Model MGB-F55W/RN1 MGB-F60W/RN1 MGB-F65W/RN1
Cooling Capacity
kW 55 60 65
Btu/h 187,660 204,700 221,780
Heating Capacity kW 59 64 69
Power supply V/Ph/Hz 380-400/3/50
Power
supply
Manual switch A 125
Fuse A 100
Compressor
Type Fixed speed Scroll
Quantity Pieces 2
Model SH140A4ALC
Brand Danfoss
Capacity W 34700×2
Input W 10860×2
Rate current(RLA) A 21.4×2
Locked rotor Amp(LRA) A 147×2
Power input
Cooling kW 17.5 19.3 20.4
Cooling rated current A 30.5 33.6 36.5
Heating kW 18.3 19.8 21.5
Heating rated current A 31.5 34.3 37.2
Max. Input consumption A 28.2
Max. Current A 47.6
Refrigerant
Type R410a
Weight kg 7×2
Refrigerant control EXV+ capillary throttle
Condenser
(Air side)
Air side heat-exchanger type Copper-fin-coil
Quantity of fan motor Pieces 2
Air flow volume ×103m3/h 24
Fan motor input kW 0.65
Evaporator
(Water side)
Water side heat-exchanger type Shell and tube
Water resistance loss kPa 15
Water inlet/outlet pipeline
inside normal diameter
mm DN100
inch 4”
Water flow volume m3/h 9.4 10.3 11.2
Max. Pressure MPa 1
Water pipe connection type Flexible joint
Dimension
Net(W×H×D)
mm 2000×1880×900
inch 78.7×74×35.4
Packing(W×H×D)
mm 2090×2055×985
inch 82.3×80.9×38.8
Weight
Net weight kg 580
Operation weight kg 650

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Connection
wire
Power wire mm2×No. 16×4+10 ×1
Signal wire mm2×No. 0.75×3-core
Control type Wired controller
Safety protection device
1) Protection for over-high discharge pressure.
2) Protection for over-low suction pressure.
3) Power supply phase sequence protection.
4) Anti-frozen protection in cooling mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over current.
7) Protection for compressor overload.
8) Outlet and inlet water temperature difference protection.
9) Compressor discharge temp. protection.
10) Water flow cut-off protection.
11) Sensor malfunction protection.
Noise level(semi-anechoic ) dB(A) 67
Operation water temp ℃Cooling：5～17 Heating：45～50
Ambient temp ℃Cooling：10～46 Heating：-10～21
Note: Please refer to the water flow volume in the above table strictly to design and install.
All the above data is measured base on the following working condition:
1. cooling mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
7℃,air inlet temperature of condenser is 35℃;
2. heating mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
45℃,air inlet temperature of condenser is DB/WB 7/6℃.

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Model MGB-D65W/RN1
Cooling Capacity kW 65 130 185
Btu/h 221,780 443,560 631,220
Heating Capacity kW 69 138 200
Power supply V/Ph/Hz 380-415/3/50 380-400/3/50 380-400/3/50
Power
supply Manual switch A 150 250 400
Fuse A 100 200 300
Compressor
Type Scroll (fixed speed+digital scroll) Fixed speed Scroll Fixed speed Scroll
Quantity Pieces 3 4 6
Model ZP144KCE-TFD-522 / ZPD72KCE-TFD-433 /
ZP67KCE-TFD-420 SH140A4ALC SH140A4ALC
Brand Copeland Danfoss Danfoss
Capacity kW 36 17 16.3 34.7×4 34.7×6
Input kW 10.8 5.75 5.2 10860×4 10860×6
Rate current(RLA) A 18.7 9.8 9.1 21.4×4 21.4×6
Locked rotor Amp(LRA) A 144 82.4 74 147×4 147×6
Power input
Cooling kW 20.4 40.8 63
Cooling rated current A 36.5 73 110
Heating kW 21.5 43.0 61
Heating rated current A 37.2 74.4 107
Max. Input consumption A 28.2 55.5 78.3
Max. Current A 47.6 93.8 133.4
Refrigerant
Type R410a R410a R410a
Weight kg 7×2 7×4 7×6
Refrigerant control EXV+ capillary throttle EXV+ capillary
throttle EXV+ capillary throttle
Condenser
(Air side)
Air side heat-exchanger type Copper-fin-coil Copper-fin-coil Copper-fin-coil
Quantity of fan motor Pieces 2 4 6
Air flow volume ×103m3/h 24 48 72
Fan motor input kW 0.55×2 1.3 1.3
Evaporator
(Water side)
Water side heat-exchanger type Shell and tube Shell and tube Shell and tube
Water resistance loss kPa 15 25 30
Water inlet/outlet
pipeline inside normal
diameter
mm DN100 DN65 DN80
inch 4’’ 2-1/2” 3”
Water flow volume m3/h 11.2 22.4 31.8
Max. Pressure MPa 1 1 1
Water pipe connection type Flexible joint Flexible joint Flexible joint
Dimension
Net(W×H×D) mm 2000×1880×900
2000×2090×1685 2850×2110×2000
inch 78.7×74×35.4
78.7×82.3×66.3 112.2×83.1×78.7
Packing(W×H×D) mm 2090×2020×985
2090×2240×1755 2980×2260×2135
inch 82.3×80.9×38.8
82.3×88.2×69 117.3×89×84.1
MBG-F130W/R(S)N1 MGB-F185W/R(S)N1

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Weight Net weight kg 600 1150 1730
Operation weight kg 670 1270 2000
Power wire mm2×No. 25×4+16×1 35×3+16×2 75×3+35 ×2
Signal wire mm2×No. 0.75×3-core 0.75×3-core
Control type Wired controller Wired controller
Safety protection device
1) Protection for over-high discharge
pressure.
2) Protection for over-low suction
pressure.
3) Power supply phase sequence
protection.
4) Anti-frozen protection in cooling
mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over
current.
7) Protection for compressor
overload.
8) Outlet and inlet water
temperature difference protection.
9) Compressor discharge temp.
protection.
10) Water flow cut-off protection.
11)Sensor malfunction protection.
12)Low ambient temperature
drive-up protection
13)Low-temperature protection of
shell-and-tube heat exchanger.
1) Protection for over-high discharge
pressure.
2) Protection for over-low suction
pressure.
3) Power supply phase sequence
protection.
4) Anti-frozen protection in cooling
mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over
current.
7) Protection for compressor overload.
8) Outlet and inlet water temperature
difference protection.
9) Compressor discharge temp.
protection.
10) Water flow cut-off protection.
11) Sensor malfunction protection.
Noise level(semi-anechoic ) dB(A) 67 70 74
Operation water temp ℃Cooling：0～17(0℃must add antifreeze)
Heating：22～50 Cooling：5～17 Heating：45～50
Ambient temp ℃Cooling：10～46 Heating：-10～21 Cooling：10～46 Heating：-10～21
Note: Please refer to the water flow volume in the above table strictly to design and install.
All the above data is measured base on the following working condition:
1. cooling mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
7℃,air inlet temperature of condenser is 35℃;
2. heating mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
45℃,air inlet temperature of condenser is DB/WB 7/6℃.

MCAC-ATSM-2011-12 Air-cooledmodularchillerunit50Hz
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Model MGBT-F250W/RN1
Cooling Capacity kW 250
Btu/h 830,000
Heating Capacity kW 270
Power supply V/Ph/Hz 380-400/3/50
Power supply Manual switch A 450
Fuse A 350
Compressor
Type Scroll (fixed speed)
Quantity Copeland 8
Model SH120A4ALC
Brand Copeland
Capacity W 111231
Input W 10275
Rate current(RLA) A 20.88
Locked rotor Amp(LRA) A 177
Power input
Cooling kW 78.3
Cooling rated current A 141.9
Heating kW 80
Heating rated current A 146
Max. Input consumption A 104.9
Max. Current A 194.6
Refrigerant
Type R410A
Weight kg 15×4
Refrigerant control EXV+ capillary throttle
Condenser
(Air side)
Air side heat-exchanger type Fin-coil
Quantity of fan motor Pieces 8
Air flow volume ×103m3/h 96
Fan motor input kW 5.6
Evaporator
(Water side)
Water side heat-exchanger type Shell-tube
Water resistance loss kPa 40
Water inlet/outlet pipeline inside
normal diameter
mm DN100
inch 4”
Water flow volume m3/h 43
Max. Pressure MPa 1
Water pipe connection type Flexible joint
Dimension
Net(W×H×D) mm 3800×2130×2000
inch 149.6×83.86×78.74
Packing(W×H×D) mm 3900×2200×2100
inch 153.54×86.61×82.68
Weight Net weight kg 2450
Operation weight kg 2600
Connection wire Power wire mm2×No. 185×4+70×1
Signal wire mm2×No. 0.75×3-core with shielding
Control type Wired controller

Air-cooledmodularchillerunit50Hz MCAC-ATSM-2011-12
20
Note: Please refer to the water flow volume in the above table strictly to design and install.
All the above data is measured base on the following working condition:
1. cooling mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
7℃,air inlet temperature of condenser is 35℃;
2. heating mode under normal working condition: water flow 0.172 m3/(h•kW), outlet water temperature of chilled water is
45℃,air inlet temperature of condenser is DB/WB 7/6℃.
Safety protection device
1) Protection for over-high discharge pressure.
2) Protection for over-low suction pressure.
3) Power supply phase sequence protection.
4) Anti-frozen protection in cooling mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over current.
7) Protection for compressor overload.
8) Outlet and inlet water temperature difference
protection.
9) Compressor discharge temp. protection.
10) Water flow cut-off protection.
11)Sensor malfunction protection.
12)Low ambient temperature drive-up protection
13)Low-temperature protection of shell-and-tube heat
exchanger.
Noise level(semi-anechoic ) dB(A) 74
Operation water temp ℃Cooling：0～17(0℃must add antifreeze)
Heating：22～50
Ambient temp ℃Cooling：10～52
Heating：-10～21

MCAC-ATSM-2011-12 Air-cooledmodularchillerunit50Hz
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4 Dimension
25/30kw module
Front view
Top view
Model Unit A B C D E F
MGB-F(D)25W/RN1
MGB-F(D)30W/RN1
mm 1514 841 1865 115 315 172
inch 59.6 33.11 73.43 4.53 12.4 6.77