18
Refrigerant pipe installation
English
Instal
lation Pr
oc
edur
e
H/P
When all the following conditions are met, install the main liquid pipe that is one step smaller to reduce piping load and the amount of
refrigerant.
Note that the refrigerant for the main liquid pipe must be added by the specified amount upon reduction.
Condition 1: In case the length for vertical piping is less than 40 m
Condition 2: Max. length A ≥ Max. pipping length/{1 - (vertical piping length * 0,015)}
※ Max. piping length: Piping length between the outdoor unit and the farthest indoor unit (m)
• Length allowed to reduce the diameter of liquid pipe, A (equivalent length)
• When piping is installed with reduction of the diameter of liquid pipe, Please set option ‘reduction of the diameter of liquid pipe’.”
Capacity
(HP)
Below 90 m
Over 90m
Capacity
(HP)
Below 90 m
Over 90m
Pipe
diameter
Max.
length (m)
Pipe
diameter
Max.
length (m)
Pipe
diameter
Max.
length (m)
Pipe
diameter
Max.
length (m)
8
This capacity is not supported.
54
15.88
40
19.05
130
10
This capacity is not supported.
56
15.88
40
19.05
120
12
9.52
50
12.7
200
58
15.88
40
19.05
120
14
9.52
40
12.7
190
60
15.88
40
19.05
110
16
9.52
30
12.7
150
62
19.05
90
22.22
200
18
12.7
90
15.88
200
64
19.05
90
22.22
200
20
12.7
90
15.88
200
66
19.05
90
22.22
200
22
12.7
80
15.88
200
68
19.05
90
22.22
200
24
12.7
70
15.88
200
70
19.05
80
22.22
190
26
15.88
90
19.05
200
72
19.05
80
22.22
180
28
15.88
90
19.05
200
74
19.05
70
22.22
170
30
15.88
90
19.05
200
76
19.05
70
22.22
160
32
15.88
90
19.05
200
78
19.05
70
22.22
150
34
15.88
90
19.05
200
80
19.05
60
22.22
150
36
15.88
90
19.05
200
82
19.05
60
22.22
140
38
15.88
90
19.05
200
84
19.05
60
22.22
130
40
15.88
80
19.05
200
86
19.05
50
22.22
130
42
15.88
70
19.05
200
88
19.05
50
22.22
120
44
15.88
70
19.05
200
90
19.05
50
22.22
120
46
15.88
60
19.05
180
92
This capacity is not supported.
48
15.88
60
19.05
170
94
This capacity is not supported.
50
15.88
50
19.05
150
96
This capacity is not supported.
52
15.88
50
19.05
140
98
This capacity is not supported.
e.g. In case of the site for 20HP, Max. piping length of 140 m (Horizontal piping length of 120 m & Vertical piping length of 20 m):
Max. length A ≥ Max. piping length/{1 - (Vertical piping length * 0.015)}
200 m ≥ 140 m/{1 - (20 * 0.015)} = 140 m/0.7 = 200 m
Thus, the Max. piping length of 140 m (Horizontal piping length of 120 m & Vertical piping length of 20 m) can be allowed.
Accordingly, horizontal piping of 120 m + vertical piping of 20 m (140 m in total) can be installed.
Summary of Contents for AM AXV Series
Page 68: ......
