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Refrigerant piping installation
3 Outside Units
Y branch
A
B
To outside unit
To branch piping or indoor unit
A
B
Facing
upwards
Facing
downwards
Within 3 Within 3
Viewed from point A
in direction of arrow
Within +/- 10
Connecting
branch pipe
Combination specification Gas pipe Liquid pipe
ARCNN20
ARCNN30
Don't cut the pipe less than
70mm
Blow nitrogen while
brazing
I.D38.1(1-1/2)
I.D38.1(1-1/2)
I.D34.9(1-3/8)
Don't cut the pipe less than
70mm
Blow nitrogen while
brazing
[mm(inch)]
401(15-25/32)
331(13-1/32)
24
(31/32)
80(3-5/32)
73(2-7/8)
73(2-7/8)
O.D12.7(1/2)
I.D12.7(1/2)
I.D12.7(1/2)
I.D12.7(1/2)
I.D12.7(1/2)
I.D12.7(1/2)
I.D9.52(3/8)
O.D12.7(1/2)I.D9.52(3/8)
I.D9.52(3/8)
I.D15.88(5/8)
I.D15.88(5/8)
I.D19.05(3/4)
I.D19.05(3/4)
I.D19.05(3/4)
I.D22.2(7/8)
I.D22.2(7/8)
440(17-5/16)
370(14-9/16)
45
(25/32)
I.D
41.3(1-5/8)
397(15-5/8)
289(11-3/8)
24
(31/32)
473(18-5/8)
363(14-9/32)
38
(1-1/2)
I.D28.58(1-1/8)
O.D28.58(1-1/8)
I.D28.58(1-1/8)
I.D28.58(1-1/8)
I.D28.58(1-1/8)
I.D28.58(1-1/8)
I.D19.05(3/4)
I.D19.05(3/4)
I.D19.05(3/4)
I.D19.05(3/4)
I.D15.88(5/8)
I.D31.8(1-1/4)
I.D34.9(1-3/8)
O.D34.9(1-3/8)
I.D34.9(1-3/8)
75(2-15/16) 83(3-9/32)
115(4-17/32)
115(4-17/32)
I.D22.2(7/8)
O.D28.58(1-1/8)
I.D19.05(3/4)
I.D22.2(7/8)
I.D22.2(7/8)
ENGLISH
Installation Manual 23
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