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Service Manual
Appendix:
Appendix 1: Reference Sheet of Celsius and Fahrenheit
Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32
Set temperature
Fahrenheit
display
Fahrenheit
temperature
o
(
F)
61
62/63
64/65
66/67
68
Ambient temperature
Fahrenheit
display
Fahrenheit
temperature
o
(
F)
32/33
34/35
36
37/38
39/40
41/42
43/44
45
46/47
48/49
50/51
52/53
54
Appendix 2: Configuration of Connection Pipe
1.Standard length of connection pipe（More details please refer to the specifications）
2.Min length of connection pipeFor the unit with standard connection pipe of 5m, there is no limitation for themin length of
connection pipe. For the unit with standard connection pipe of 7.5m and 8m, the min length of connection pipe is 3m.
3.Max length of connection pipe（More details please refer to the specifications）
4.The additional refrigerant oil and refrigerant charging required after prolonging connection pipe
● After the length of connection pipe is prolonged for 10m at the basis of standard length, you should add 5ml of refrigerant oil for
each additional 5m of connection pipe.
● The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):
● Basing on the length of standard pipe, add refrigerant according to the requirement as shown in the table. The additional
refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.
● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter
Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe
Liquid pipe(inch)
Ф1/4
Ф1/4 or Ф3/8
Ф1/2
Ф5/8
Ф3/4
Ф7/8
Installation and Maintenance
Fahrenheit
o
Celsius(
C)
o
(
F)
temperature
60.8
16
62.6
17
64.4
18
66.2
19
68
20
Fahrenheit
o
Celsius(
C)
o
(
F)
temperature
32
0
33.8
1
35.6
2
37.4
3
39.2
4
41
5
42.8
6
44.6
7
46.4
8
48.2
9
50
10
51.8
11
53.6
12
Gas pipe(inch)
Ф3/8or Ф1/2
Ф5/8 or Ф3/4
Ф3/4 or Ф7/8
Ф1 or Ф1 1/4
/
/
display
Fahrenheit
Celsius(
o
(
F)
o
(
F)
69/70
69.8
21
71/72
71.6
22
73/74
73.4
23
75/76
75.2
24
77
77
25
display
Fahrenheit
Celsius(
o
(
F)
o
(
F)
55/56
55.4
13
57/58
57.2
14
59/60
59
15
61/62
60.8
16
63
62.6
17
64/65
64.4
18
66/67
66.2
19
68/69
68
20
70/71
69.8
21
72
71.6
22
73/74
73.4
23
75/76
75.2
24
77/78
77
25
Outdoor unit throttle
Cooling and
Cooling only(oz/ft.)
heating(oz/ft.)
0.2
0.2
0.3
0.7
2.7
3.8
Fahrenheit
display
Fahrenheit
o
C)
temperature
o
(
F)
78/79
78.8
80/81
80.6
82/83
82.4
84/85
84.2
86
Fahrenheit
display
Fahrenheit
o
C)
temperature
o
(
F)
79/80
78.8
81
80.6
82/83
82.4
84/85
84.2
86/87
88/89
87.8
90
89.6
91/92
91.4
93/94
93.2
95/96
97/98
96.8
99
98.6
0.2
0.2
1.3
1.3
2.7
3.8
o
Celsius(
C)
o
(
F)
26
27
28
29
86
30
o
Celsius(
C)
o
(
F)
26
27
28
29
86
30
31
32
33
34
95
35
36
37
49
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