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Service Manual
1. Summary
Indoor Unit:
Outdoor Unit:
Part ĉ: Technical Information
GWH18TC-K3DNA1B/I
GWH24TD-K3DNA1B/I
GWH28TD-K3DNA1B/I
Remote Controller:
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GWH24TD-K3DNA1B/O
GWH28TD-K3DNA1B/O
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Model GWH18TC-K3DNA1B
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Power
6XSSO\
Rated Voltage V 220-240
5DWHG)UHTXHQF\ Hz 50
3KDVHV 1
3RZHU6XSSO\0RGH Indoor
Cooling Capacity (Min Max) W 5300
Heating Capacity (Min Max) W 5800
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EER W/W 3.49
COP W/W 3.50
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Operation temp ºC 16~30
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Model GWH24TD-K3DNA1B
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Rated Voltage V 220-240
5DWHG)UHTXHQF\ Hz 50
3KDVHV 1
3RZHU6XSSO\0RGH Indoor
Cooling Capacity (Min Max) W 7000
Heating Capacity (Min Max) W 7600
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COP W/W 3.50
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Rated Voltage V 220-240
5DWHG)UHTXHQF\ Hz 50
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3RZHU6XSSO\0RGH Indoor
Cooling Capacity (Min Max) W 8000
Heating Capacity (Min Max) W 8400
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Service Manual
2.4 Noise Criteria Curve Tables for Both Models
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling: Heating:
Current(A)
Compressor Speed (rps)
12010080604020
Compressor Speed (rps)
Current(A)
13
11
9
7
5
3
1
12010080604020
13
11
9
7
5
3
1
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Outdoor: DB35°C/WB24°C
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Indoor: DB20°C/WB15°C
Outdoor: DB7°C/WB6°C
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230V 230V
24/28K
18K
20
30
40
50
SL L ML MHMHSH
Noise/dB(A)
46
48
50
52
54
56
58
60
20 30 40 50 60 70 80 90 100
Noise dB(A)
Heating
Cooling
Indoor side noise Outdoor side noise
Cooling Heating
Capacity ratio(%) Capacity ratio(%)
Outdoor Temp.(ć)Outdoor Temp.(ć)
0
20
40
60
80
100
120
-15 -10 17 -5 0 2 5 7 10
0
20
40
60
80
100
120
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Service Manual
2.5 Cooling and Heating Data Sheet in Rated Frequency
Rated cooling condition(°C)
(DB/WB) Model
3UHVVXUHRIJDVSLSH
connecting indoor and
RXWGRRUXQLW
,QOHWDQGRXWOHWSLSH
WHPSHUDWXUHRIKHDW
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LQGRRUXQLW
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RXWGRRUXQLW
Compressor
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(rps)
Indoor 2XWGRRU P (MPa) T1 (°C) T2 (°C)
27/19 35/24 18K 0.9~1.0 in:8~11
RXWa
in:75~83
RXWa 6XSHU+LJK +LJK 75
27/19 35/24 24K 0.9~1.0 in:8~11
RXWa
in:75~83
RXWa 6XSHU+LJK +LJK 75
27/19 35/24 28K 0.9~1.0 in:8~11
RXWa
in:75~83
RXWa 6XSHU+LJK +LJK 80
5DWHGKHDWLQJ
condition(°C) (DB/WB) Model
3UHVVXUHRIJDVSLSH
connecting indoor and
RXWGRRUXQLW
,QOHWDQGRXWOHWSLSH
WHPSHUDWXUHRIKHDW
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LQGRRUXQLW
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RXWGRRUXQLW
Compressor
UHYROXWLRQ
(rps)
Indoor 2XWGRRU P (MPa) T1 (°C) T2 (°C)
20/15 7/6 18K 2.2~2.4 in:75~83
RXWa
in:1~3
RXWa 6XSHU+LJK +LJK 75
20/15 7/6 24K 2.2~2.4 in:75~83
RXWa
in:1~3
RXWa 6XSHU+LJK +LJK 75
20/15 7/6 28K 2.2~2.4 in:75~83
RXWa
in:1~3
RXWa 6XSHU+LJK +LJK 80
Instruction:
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Cooling:
Heating:

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Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
Model W H D
18K 1018 319 230
24/28K 1178 326 264
130 100
50
178 747 253
Φ70 Φ70
144 685 189
55
44
Φ70
13
55
Φ70
119
W
H
D
18K
24/28K