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Refrigerant piping installation
Connection of Outdoor units
Outdoor units
2 Unit
C
C
3 Unit
C
4 Unit
C
For more information, refer accessory installation manual.
Y branch
A
To outdoor unit
A
To branch piping or indoor unit
B
26
Outdoor Unit
Model
Low Pressure Gas Pipe
416(16-3/8)
408(16-1/16)
I.D.28.58(1-1/8)
ARCNB21
C
I.D.31.8(1-1/4)
I.D.34.9(1-3/8)
I.D.38.1(1-1/2)
O.D28.58(1-1/8)
I.D.41.3(1-5/8)
O.D.34.9(1-3/8)
130(5-1/8)
406(16)
353(13-29/32)
I.D38.1(1-1/2)
I.D34.9(1-1/8)
I.D.41.3(1-5/8)
ARCNB31
I.D.41.3(1-5/8)
O.D28.58(1-1/8)
O.D.34.9(1-3/8)
125(4-29/32)
415(16-11/32)
375(14-25/32)
ARCNB41
A
I.D44.48(1-25/32)
I.D53.98(2-1/8)
B
Viewed from point A
in direction of arrow
Liquid Pipe
331(13-1/32)
314(12-3/8)
I.D.28.58(1-1/8)
I.D.15.88(5/8)
I.D.22.2(7/8)
111(4-3/8)
I.D.19.05(3/4)
I.D.28.58(1-1/8)
I.D.22.2(7/8)
O.D.19.05(3/4)
I.D22.2(7/8)
I.D19.05
(3/4)
120(4-23/32)
70(2-3/4)
334(13-5/32)
281(11-1/16)
O.D.19.05(3/4)
I.D.34.9(1-3/8)
I.D.22.2(7/8)
111(4-3/8)
I.D.28.58(1-1/8)
I.D.15.88(5/8)
O.D.19.05(3/4)
I.D.12.7(1/2)
I.D22.2(7/8)
I.D19.05
X 2
(3/4)
110(4-11/32)
120(4-23/32)
334(13-5/32)
281(11-1/16)
I.D.22.2(7/8)
I.D.19.05(3/4)
134
I.D.41.3(1-5/8)
(5-9/32)
I.D.25.4(1)
O.D.22.2(7/8)
I.D.28.58(1-1/8)
80(3-5/32)
Within +/- 10
[Unit : mm(inch)]
High Pressure Gas Pipe
I.D34.9(1-3/8)
I.D31.8(1-1/4)
I.D.15.88(5/8)
I.D28.58(1-1/8)
I.D.12.7(1/2)
83(3-9/32)
453(17-27/32)
I.D.9.52(3/8)
491(19-9/32)
O.D12.7(1/2) I.D9.52(3/8)
I.D.12.7(1/2)
I.D.15.88(5/8)
I.D12.7(1/2)
70(2-3/4)
O.D15.88(5/8)
I.D9.52(3/8)
O.D25.4(1) I.D22.2(7/8) I.D19.05(3/4)
X2
110(4-11/32)
120(4-23/32)
I.D34.9(1-3/8)
I.D41.3(1-5/8)
I.D38.1(1-1/2)
83(3-9/32)
O.D.19.05(3/4)
471(18-17/32)
517(20-11/32)
I.D19.05(3/4) I.D15.88(5/8)
O.D22.2(7/8)
O.D38.1(1-1/2)
I.D.15.88(5/8)
I.D.12.7(1/2)
O.D12.7(1/2)
I.D9.52(3/8)
120(4-23/32)
90(3-17/32)
I.D6.35(1/4)
I.D12.7(1/2)
O.D15.88(5/8)
110(4-11/32)
70(2-3/4)
I.D.53.98(2-1/8)
I.D.44.48
(1-25/32)
83
I.D.19.05(3/4)
420(16-17/32)
(3-9/32)
490(19-9/32)
I.D.34.9(1-3/8)
I.D31.8(1-1/4)
I.D.15.88(5/8)
I.D.12.7(1/2)
O.D.38.1(1-1/2)
I.D.28.58(1-1/8)
X2
175(6-29/32)
Facing
Facing
downwards
upwards
Within ± 3°
Within ± 3°
I.D31.8(1-1/4)
I.D28.58(1-1/8)
I.D25.4(1)
I.D31.8(1-1/4)
111
I.D28.58(1-1/8)
I.D25.4(1)
(4-3/8)
O.D25.4(1) I.D22.2(7/8)
80(3-5/32)
I.D15.88(5/8)
O.D19.05(3/4)
I.D12.7(1/2)
110(4-11/32)
I.D34.9(1-3/8)
I.D38.1(1-1/2)
I.D28.58(1-1/8)
I.D28.58(1-1/8)
125(4-29/32)
I.D34.9(1-3/8)
I.D22.2(7/8)
I.D41.3(1-5/8)
I.D38.1(1-1/2)
I.D41.3(1-5/8)
O.D34.9(1-3/8)
130(5-1/8)
I.D22.2(7/8)
O.D28.58(1-1/8)
I.D19.05
(3/4)
120(4-23/32)
I.D44.8(1-25/32)
I.D41.3(1-5/8)
I.D38.1(1-1/2)
I.D44.8(1-25/32)
I.D41.3(1-5/8)
134
(5-9/32)
I.D38.1(1-1/2)
I.D.25.4(1)
I.D.22.2(7/8)
O.D.28.58(1-1/8)
115(4-17/32)
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