108
Installation and Maintenance
Service Manual
Appendix:
1.Standard length of connection pipe
● 16.40ft, 24.61ft, 26.25ft.
2.Min. length of connection pipe is 9.84ft.
3.Max. length of connection pipe and max. high difference.
4.The additional refrigerant oil and refrigerant charging required after
prolonging connection pipe
● After the length of connection pipe is prolonged for 32.81ft at the
basis of standard length, you should add 0.0013gal of refrigerant oil
for each additional 16.40ft of connection pipe.
● The calculation method of additional refrigerant charging amount (on
the basis of liquid pipe):
Appendix 1: Reference Sheet of Celsius and Fahrenheit
Appendix 2: Configuration of Connection Pipe
Cooling capacity
Max length of
connection pipe
Max height
difference
5000 Btu/h(1465 W)
49.21ft
16.40ft
7000 Btu/h(2051 W)
49.21ft
16.40ft
9000 Btu/h(2637 W)
49.21ft
16.40ft
12000 Btu/h(3516 W)
65.62ft
32.81ft
18000 Btu/h(5274 W)
82.02ft
32.81ft
24000 Btu/h(7032 W)
82.02ft
32.81ft
28000 Btu/h(8204 W)
98.43ft
32.81ft
36000 Btu/h(10548 W)
98.43ft
65.62ft
42000 Btu/h(12306 W)
98.43ft
65.62ft
48000 Btu/h(14064 W)
98.43ft
65.62ft
Set temperature
Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1
.
8+32
Ambient temperature
Fahrenheit
display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
Fahrenheit
display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
Fahrenheit
display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
32/33
32
0
55/56
55.4
13
79/80
78.8
26
34/35
33.8
1
57/58
57.2
14
81
80.6
27
36
35.6
2
59/60
59
15
82/83
82.4
28
37/38
37.4
3
61/62
60.8
16
84/85
84.2
29
39/40
39.2
4
63
62.6
17
86/87
86
30
41/42
41
5
64/65
64.4
18
88/89
87.8
31
43/44
42.8
6
66/67
66.2
19
90
89.6
32
45
44.6
7
68/69
68
20
91/92
91.4
33
46/47
46.4
8
70/71
69.8
21
93/94
93.2
34
48/49
48.2
9
72
71.6
22
95/96
95
35
50/51
50
10
73/74
73.4
23
97/98
96.8
36
52/53
51.8
11
75/76
75.2
24
99
98.6
37
54
53.6
12
77/78
77
25
Fahrenheit
display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
Fahrenheit
display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
Fahrenheit
display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
61
60.8
16
69/70
69.8
21
78/79
78.8
26
62/63
62.6
17
71/72
71.6
22
80/81
80.6
27
64/65
64.4
18
73/74
73.4
23
82/83
82.4
28
66/67
66.2
19
75/76
75.2
24
84/85
84.2
29
68
68
20
77
77
25
86
86
30
Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe
Outdoor unit throttle
Liquid pipe(inch)
Gas pipe(inch)
Cooling only(oz/ft.)
Cooling and heating(
oz/ft.)
Ф0.24
Ф0.37 or Ф0.47
0.53
0.71
Ф0.24 or Ф0.37
Ф0.63 or Ф0.75
0.53
1.76
Ф0.47
Ф0.75 or Ф0.87
1.06
4.23
Ф0.63
Ф1 or Ф1.25
2.12
4.23
Ф0.75
/
8.82
8.82
Ф0.87
/
12.35
12.35
● 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
