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24 Outdoor Unit
Refrigerant piping installation
2 outdoor units
Connection of Outdoor units
2 Unit
3 Unit
ARCNN21
ARCNN31
C
C
C
C
130(5-1/8)
416(16-3/8)
331(13-1/32)
314(12-3/8)
408(16-1/16)
111(4-3/8)
I.D.38.1(1-1/2)
I.D.34.9(1-3/8)
I.D.34.9(1-3/8)
O.D.34.9(1-3/8)
O.D.19.05(3/4)
O.D.15.88(5/8)
O.D.19.05(3/4)
O.D.19.05(3/4)
O.D.34.9(1-3/8)
125(4-29/32)
406(15-31/32)
353(13-29/32)
111(4-3/8)
I.D.41.3(1-5/8)
I.D.41.3(1-5/8)
I.D.31.8(1-1/4)
I.D.28.58(1-1/8)
I.D.19.05(3/4)
I.D.15.88(5/8)
I.D.15.88(5/8)
I.D.15.88(5/8)
I.D.15.88(5/8)
I.D.28.58(1-1/8)
I.D.28.58(1-1/8)
I.D.28.58(1-1/8)
I.D.22.2(7/8)
I.D.22.2(7/8)
110(4-11/32)
120(4-23/32)
120(4-23/32)
I.D.22.2(7/8)
I.D.12.7(1/2)
I.D.12.7(1/2)
I.D.12.7(1/2)
I.D.12.7(1/2)
I.D.9.52(3/8)
I.D.41.3(1-5/8)
70(2-3/4)
83(3-9/32)
334(13-5/32)
281(11-1/16)
83(3-9/32)
Outdoor units Model Gas pipe Liquid pipe
I.D.
9.52(3/8)
O.D. 19.05(3/4)
I.D. 15.88(5/8)
O.D. 12.7(1/2)
I.D. 12.7(1/2)
I.D. 6.35(1/4)
X2
110(4-11/32)
110(4-11/32)
I.D.9.52(3/8)
I.D.22.2(7/8)
I.D.19.05(3/4)
O.D.28.58(1-1/8)
I.D.22.2(7/8)
I.D.19.05(3/4)
O.D.28.58(1-1/8)
I.D34.9(1-3/8)
I.D38.1(1-1/2)
I.D.3/4(19.05)
O.D.3/4(19.05)
I.D.3/4(19.05)
O.D.3/4(19.05)
For more information, refer accessory installation manual.
Field Supply (Not provided by LG)
Common pipes
[Unit: inch(mm)]
Y branch
A
B
To outdoor 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°
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