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Midea
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MSGI-12HRN2
Schematic
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Midea MSGI-09HRN2, MSGI-12HRN2, M2OA-18HRN2, M2OA-21HRN2, M3OA-27HRN2 Schematic

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GD Midea Refrigeration Equipment Co. Ltd
MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS
Technical service manual 2007
R series service manual
Indoor Models
Outdoor Models
MSGI-09HRN2 MSGI-12HRN2
M2OA-18HRN2 M2OA-21HRN2 M3OA-27HRN2 M3OA-30HRN2
214
R series service manual
Multi SERIES
1. Features
2. Function
3. Specification
4. Dimensions
5. Refrigeration cycle diagram
6. Wiring diagram
7. Troubleshooting
8. Electronic function
9. Characteristic of temp. sensor
215
1. Features
p
1.1 Universal outdoor unit and indoor unit design
1.2 R410a refrigerant; Cooling & heating units
1.3 The indoor unit combination is as follow list:
OUTDOOR UNIT MODEL INDOOR UNIT COMBINATION
M2OA-18HRN1 9K×2 M2OA-21HRN1 9K+12K M3OA-27HRN1 9K×3 M3OA-30HRN1 9K×2+12K
1.4 Working Temperature Range
R series service manual
Models
multi
on/off
2.Function
Indoor unit
Cooling Heating
Indoor Low Indoor Hi Outdoor Low Outdoor Hi Indoor Low Indoor Hi
17 / 5 43 / 30
Operation ON/OFF by remote controller
Sensing by room temperature
Room temperature sensor. Pipe temperature sensor.
Room temperature control
Maintain the room temperature in accordance with the setting temperature.
Starting temperature con trol
Outdoor Low Outdoor Hi
-7 24
Indoor fan is delayed for 5 sec at the starting.
Indoor fan speed control
high, med, low, breeze.
Operation indication Lamps (VLED)
Light up in the VLED for each operation mode.
Two-direction air vane
The unit will decide the louver direction according to operation mode.
Sleep mode auto control
The fan is turn to low speed (cooling/heating). The unit will be turn off at the seventh hour.
Independent dehumidification
The function is usually used in rainy days in
s
ringtime or damp areas.
216
Turbo mode
Anti-cold function
Prevent the cold wind at
the beginning of unit start.
Defrost mode
Auto-restart function
Air flow Direction control
The function will be
Self-diag. function
operate in any operation
Outdoor unit
Power relay control
The unit has 3 mins delay between continuously ON/OFF operations.
Check point
Hydrophilic aluminum fin
The hydrophilic fin can improve the heating efficiency at operation mode.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Discharge pipe temperature protect
R series service manual
Anti-rust cabinet
3. Specification
3.1 Indoor unit
Model MSGI-09HRN2 MSGI-12HRN2
Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1PH, 220-240V~,50Hz
Capacity Btu/h 9000 12000
Cooling
Heating
Indoor
fan motor
Indoor
coil
Indoor air flow (Hi/Mi/Lo) m3/h 510/460/410 660/580/500
Indoor noise level (Hi/Mi/Lo) dB(A) 36/34/32 39/33/28
Indoor
unit
Input W 38.5 39
Rated current A 0.18 0.20
Capacity Btu/h 10000 13000
Input W 38.5 39
Rated current A 0.18 0.20
Model RPG13H RPG13H
Brand Welling Welling
Input W 36 36
Capacitor uF 1.2 1.2
Speed(hi/mi/lo) r/min 1180/1080/1000 1250/1100/950
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 21X13.37 21X13.37
c.Fin spacing mm 1.3 1.3
d.Fin type (code) Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
f.Coil length x height x width mm 578X252X26.74 578X252X26.74
g.Number of circuits 2 2
Dimension (W*H*D) mm 750×250×188 750×250×188
Packing (W*H*D) mm 830X336X280 830X336X280
Net/Gross weight Kg 8.5/10.5 8.5/10.5
Liquid side/ Gas side mm(inch)
Ф7, Innergroove tube Ф7, Innergroove tube
Ф6.35/Ф9.53 Ф6.35/Ф12.7
217
R series service manual
3.2 Outdoor unit
Model M2OA-18HRN2 M2OA-21HRN2
Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz
Capacity Btu/h 9000X2 9000+12000
Cooling
Heating
Energy class D CLASS D CLASS
Max. input consumption W 2860 3400
Max. current A 13 15.0
Starting current A 19.8 19.8+30
Compressor
Outdoor fan motor
Outdoor coil
Outdoor air flow m3/h 1900 2070
Outdoor noise level dB(A) 58 58
Outdoor unit
Refrigerant type g R407C/800X2 R407C/750+1000
Design pressure(Hi/Lo) MPa 2.8/1.2 2.8/1.2
Refrigerant piping
Connection wiring No No
Plug type No No
Thermostat type Electronic control Electronic control Operation temp ℃ 17-30 17-30 Ambient temp ℃ 18~43(cooling); -7~24(heating)
Input W 1980 2300
Rated current A 9.61 10.22
EER w/w.h 2.63 2.68
Capacity Btu/h 10000X2 10000+13000
Input W 2000 2350
Rated current A 9.78 11.5
COP W/W.H 2.90 2.85
Model
Type Rotary Rotary
Brand GD TOSHIBA GD TOSHIBA
Capacity Btu/h 10800 10800;13650
Input W 1000 1000;1310
Rated current(RLA) A 4.4 4.4;6.1
Locked rotor Amp(LRA) A 24 24;31
Thermal protector Internal Internal
Capacitor uF 25+25 25+35
Refrigerant oil ml 400 400;480
Model YDK69-6 YDK69-6
Brand WeiLing Welling
Input W 154 154
Capacitor uF 4 4
Speed r/min 900/670 900/670
a.Number of rows 2 2 b.Tube pitch(a)x row
c.Fin spacing mm 1.7 1.7
d.Fin type (code) Hydrophilic aluminium Hydrophilic aluminium e.Tube outside dia.and
f.Coil length x height x
g.Number of circuits 12 12
Dimension(W*H*D) mm 895X345X655 895X345X655
Packing (W*H*D) mm 1050X470X780 1050X470X780
Net/Gross weight Kg 73/77 79/83
Liquid side/ Gas side mm Ф6.35/Ф9.53;
Max. refrigerant pipe
Max. difference in level m 10(each unit) 10(each unit)
mm 25.4X22 25.4x22
mm Ф9.53, Innergroove tube Ф9.53, Innergroove tube
mm 810X610X44 810X610X44
m 10(each unit) 10(each unit)
PG180X1C-4DZDE3;
PG180X1C-4DZDE3
PG180X1C-4DZDE3;
PG225X2C-4FT
Ф6.35/Ф9.53;
Ф6.35/Ф12.7
218
R series service manual
Model M3OA-27HRN2 M30A-30HRN2
Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz
Capacity Btu/h 9000x3 9000x2+12000
Cooling
Heating
Energy class D CLASS D CLASS
Max. input consumption W 4000 4000
Max. current A 18.2 18.2
Starting current A 40+30 40+30
Compressor
Outdoor fan motor
Outdoor coil
Outdoor air flow m3/h 1450x2 1450x2
Outdoor noise level dB(A) 60 60
Outdoor unit
Refrigerant type g R407C/ 1470+820 R407C 1470+820
Design pressure(Hi/Lo) MPa 2.8/1.2 2.8/1.2
Refrigerant piping
Connection wiring No No
Plug type No No
Thermostat type Electronic control Electronic control Operation temp ℃ 17~30 17~30 Ambient temp ℃ 18~43(cooling); -7~24(heating)
Input W 2990 3320
Rated current A 14.50 16.13
EER w/w.h 2.61 2.62
Capacity Btu/h 10000X3 10000x2+13000
Input W 3050 3360
Rated current A 14.90 16.3
COP W/W.H 2.85 2.86
Model
Type Rotary Rotary
Brand GD TOSHIBA GD TOSHIBA
Capacity Btu/h 18080; 13650 18080; 13650
Input W 1760; 1310 1760; 1310
Rated current(RLA) A 8.5; 6.1 8.5; 6.1
Locked rotor Amp(LRA) A 44, 31 44, 31
Thermal protector Internal Internal
Capacitor uF 35+35 35+35
Refrigerant oil ml 750; 480 750; 480
Model YDK50-4G1 YDK50-4G1
Brand Welling Welling
Input W 107Wx2 107Wx2
Capacitor uF 4uFx2 4uFx2
Speed r/min 1150 1150
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 25.4x22 25.4x22
c.Fin spacing mm 1.5 1.5
d.Fin type (code) Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm Ф9.53, Innergroove tube Ф9.53, Innergroove tube
f.Coil length x height x width mm 813X812X44 813X812X44
g.Number of circuits
Dimension(W*H*D) mm 860X830X330 860X830X330
Packing (W*H*D) mm 1000X985X425 1000X985X425
Net/Gross weight Kg 90/94 90/94
Liquid side/ Gas side mm Ф6.35/Ф9.53;
Max. refrigerant pipe length m 10 (each unit) 10 (each unit)
Max. difference in level m 10 (each unit) 10 (each unit)
PG295X2CS-4KU1;
PG225X2C-4FT
5(A System);
PG295X2CS-4KU1;
PG225X2C-4FT
5(A System);
Ф6.35/Ф9.53;
Ф6.35/Ф12.7
219
4 Dimension
4.1 Indoor unit dimension
Mode
R series service manual
Dimension
W H D
9K
12K
750 250 188
750 250 188
220
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