26
Refrigerant pipe installation
H/P
16Ton
12Ton
(D)
(E)
(C)
(A)
(B)
(3)
(2)
(1)
6Ton
Ex.) 34 Ton
Ton
No.
Pipe size (O.D)
Liquid pipe
Gas pipe
mm
inch
mm
inch
16
(1)
15.88
5/8
28.58
1 1/8
28
(2)
19.05
3/4
34.92
1 3/8
34
(3)
19.05
3/4
41.28
1 5/8
Size of the pipe connected to the outdoor unit (A)
Select the size of the pipe according to the below table.
Outdoor unit capacity
Main pipe length within 90m (295.3ft)
Size up(Main pipe length over 90m (295.3ft))
Ton
MBH
KW
Liquid
Gas
Liquid
Gas
mm
inch
mm
inch
mm
inch
mm
inch
6
72
21.1
9.52
3/8
19.05
3/4
12.7
1/2
22.22
7/8
8
96
28.1
9.52
3/8
22.22
7/8
12.7
1/2
25.4
1
note1)
10
120
35.2
12.7
1/2
28.58
1 1/8
15.88
5/8
28.58
1 1/8
12
144
42.2
12.7
1/2
28.58
1 1/8
15.88
5/8
31.75
1 1/4
note2)
14
168
49.2
15.88
5/8
28.58
1 1/8
19.05
3/4
31.75
1 1/4
note2)
16
192
56.3
15.88
5/8
28.58
1 1/8
19.05
3/4
31.75
1 1/4
note2)
18
216
63.3
15.88
5/8
28.58
1 1/8
19.05
3/4
31.75
1 1/4
note2)
20
240
70.3
15.88
5/8
28.58
1 1/8
19.05
3/4
31.75
1 1/4
note2)
22
264
77.4
19.05
3/4
34.92
1 3/8
22.22
7/8
38.1
1 1/2
note3)
24
288
84.4
19.05
3/4
34.92
1 3/8
22.22
7/8
38.1
1 1/2
note3)
26
312
91.4
19.05
3/4
34.92
1 3/8
22.22
7/8
38.1
1 1/2
note3)
28
336
98.4
19.05
3/4
34.92
1 3/8
22.22
7/8
38.1
1 1/2
note3)
30
360
105.5
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
32
384
112.5
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
34
408
119.5
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
36
432
126.6
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
38
456
133.6
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
40
480
140.7
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
42
504
147.7
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
44
528
154.7
19.05
3/4
41.28
1 5/8
22.22
7/8
41.28
1 5/8
Note1) If 1" (25.4mm) pipe is not available on site, use 1 1/8" (28.58mm) pipe.
Note2) If 1 1/4" (31.75mm) pipe is not available on site, use 1 3/8" (34.92mm) pipe.
Note3) If 1 1/2" (38.1mm) pipe is not available on site, use 1 5/8" (41.28mm) pipe.
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