Hiyasu HS-9U2IM User manual
HS-9U2IM_HOS-18U2IM
HS-9U11IM_HS-12U11IM_HOS-21U11IM
Service Manual
Applied to:
Multi Split Type
Heat Pump Air Conditioners
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1. Product features
2. Specification
3. Dimensions
4. Refrigeration cycle diagram
5. Operation limits
6. Indoor unit combination
7. Wiring diagram
8. Electric control functions
9. Troubleshooting
10.Exploded view
Annex 1 Characteristic of temp. sensor
Annex 2 Reference data
CONTENT
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Service manual
1 Product Features
1.1 Powerful at cooling/heating.
1.2 Low voltage start-up function.
1.3 Anti-icing function at cooling mode.
1.4 Anti-cold air function at heating mode.
1.5 Auto-defrosting.
1.6 Outdoor electric current protection
1.7 Temperature protection of the outdoor compressor top.
1.8 Error self diagnosis function.
1.9 Free connection between indoor and outdoor unit
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Service manual
2 Specification
2.1 Alfa series Model
Power supply Ph-V-Hz
Capacity Btu/h
Input W
Cooling
Rated current A
Capacity Btu/h
Input W
Heating
Rated current A
Model
Brand
Input W
Capacitor uF
Indoor fan motor
Speed(hi/mi/lo) r/min
a.Number of rows
b.Tube pitch(a)x row pitch(b) mm
c.Fin spacing mm
d.Fin type (code)
e.Tube outside dia.and type mm
f.Coil length x height x width mm
Indoor coil
g.Number of circuits
Indoor air flow (Hi/Mi/Lo) m3/h
Indoor noise level (Hi/Mi/Lo) dB(A)
Dimension (W*H*D) mm
Packing (W*H*D) mm
Liquid side/ Gas side mm
Indoor unit
Net/Gross weight kg
MSHI-09HRIN1 MSHI-12HRIN1
1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz
9000 12000
38 42
0.16 0.2
11000 14000
39.5 42
0.16 0.2
RPG13H RPG20D
WEILING WEILING
36 38
1.2 1.5
1200/950/850 1250/1000/800
2 2
21×13.37 21×13.37
1.3 1.3
Hydrophilic aluminium Hydrophilic aluminium
φ7, innergroove tube φ7, innergroove
tube
578X252X26.74 635×315×27.34
2 2
500/460/410 680/520/420
36/34/32 39/33/28
750*250*205 815*280*215
830*285*336 915*290*360
Ф6.35/Ф9.53 Ф6.35/Ф12.7
8.5/10 10/12
HS-9U2IM_HOS-18U2IM
HS-9U11IM_HS-12U11IM_
HOS-21U11IM
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Service manual
2.2 Outdoor unit
Outdoor Model M2OA-18HRDN1
Indoor Units Combination Single Double
Power supply Ph-V-Hz 1Ph,220-240V~,50Hz
Capacity Btu/h 700012000 18000
Capacity W 5275
Input W 1000~1300 1644
Rated current A 4.6~6.0 8.5
EER Btu/w.h 10.95
Cooling
EER w/w 3.21
Capacity Btu/h 10000~14000 21000
Capacity W 6155
Input W 1150~1450 1866
Rated current A 5.3~6.7 9.0
EER Btu/w.h 11.2
Heating
EER w/w 3.30
Energy Classification A
Max. input consumption W 3100
Max.current A 16
Model JU1015D1
Type Rotary inverter
Brand HITACH
Capacity Btu/h 16000(60Hz)
Input W 1650
Rated current(RLA) A 9.7
Locked rotor Amp(LRA) A 28
Compressor
Thermal protector Internal
HOS-18U2IM
AND
HOS-21U11IM
Refrigerant oil ml HAF68D1 480 ml
Model YDK53-6M
Brand Welling
Input W 148
Capacitor uF 3.0
Outdoor fan motor
Speed r/min 775
a.Number of rows 1.5
b.Tube pitch(a)x row pitch(b) mm 25.4×22
c.Finspacing mm 1.7
d.Fin type (code) Hydrophilic aluminium
e.Tube outside dia.and type mm φ9.53 innergroove trube
f.Coil length x height x width mm 776×660×22
Outdoor coil
g.Number of circuits 2
Outdoor air flow m3/h 2500
Outdoor noise level dB(A) 55
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Service manual
Dimension(W*H*D) mm 845X695X335
Packing (W*H*D) mm 975X772X405
Outdoor unit
Net/Gross weight Kg 68/72
Refrigerant type R410A g 2150
Design pressure(Hi/Lo) MPa 4.2/2.5
Liquid side/ Gas side mm(inch) Ф6.35/Ф9.53 Ф6.35/Ф9.53
Transfer Connector(9.53 ė
12.7) mm(inch) 2
Max. refrigerant pipe length m 15 15
Refrigerant piping
Max. difference in level m 10 10
Connection wiring
Plug type
Thermostat type
Operation temp ć
Ambienttemp ć
Qty’per 20’ /40’ /40'HQ set
Electronic control
17-30
17~43(cooling); -7~21(heating)
/
/ /
Notes:
1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB;
Outdoor temp: 35°CDB;
Equivalent ref. Piping: 8m(horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB;
Outdoor temp: 7°CDB, 6°CWB;
Equivalent ref. Piping: 8m(horizontal)
3. Actual noise level may differ, depending on the room structure, etc, since these noise values are
from an anechoic room.
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Service manual
3 Dimensions
3.1 Alfa Series
a) Indoor unit 7/9K
b) Indoor Unit 12K
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Service manual
3.2 Outdoor unit
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Service manual
4 Refrigeration Cycle Diagram
4.2 Refrigeration circuit drawing of inverter binary type
heat
exchanger
heat
exchanger
outdoor unit
low-pressure
switch 2
inverter compressor
discharge
sensor
oil separator
high-pressure
switch 1
filter capillary
low-pressure oil tank
4-way
valve
down
part
up
part
condenser
capillary
capillary
filter
filter
5 Operation Limits
Indoor temperature 17ć32ć
Cooling mode Outdoor temperature 10ć50ć
Indoor temperature <=30
Heating mode Outdoor temperature -15ć33ć
Indoor temperature 10ć32ć
Dry mode Outdoor temperature 0ć50ć
6. Indoor units combination
6.1 Indoor unit combination for M2OA-18HRDN1
One unit Two unit
7 7+7 9+9
9 7+9 9+12
12 7+12
Instruction:
The total indoor units nominal capacity should not exceed 5.8kw for M2OA-18HRDN1;
HOS-18U2IM
AND
HOS-21U11IM
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Service manual
7. Wiring Diagram
7.1 Indoor unit (7k/9k/12k)
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4
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