LG MULTI V PLUS II ARUN Série Manuel D'installation page 24

Refrigerant piping installation
Connection of Outdoor units
2 outdoor units
Model
Connection of gas pipe
Don't cut the pipe less
than 70mm(2-3/4inch)
Ø 19.05(3/4)
Ø 28.58(11/8)
Ø 22.2(7/8)
ARCNN20
Ø15.88(5/8)
OD19.05(3/4)
Y branch
A
To outdoor unit
A
B To branch piping or indoor unit
24 Outdoor Unit
Blow nitrogen
while brazing
Master outdoor
Ø 28.58(11/8)
gas pipe
Ø 31.8(11/4)
Ø 28.58(11/8)
Main pipe
Ø19.05(3/4) OD34.9(1-3/8)
OD28.58(11/8)
Ø22.2(7/8) Ø38.1(11/2)
Connection of liquid pipe
Ø 34.9(1-3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø9.52(3/8)
B
Viewed from point A
in direction of arrow
Master outdoor
liquid pipe
Ø 12.7(1/2)
Ø 19.05(3/4)
Ø 15.88(5/8)
Main pipe
OD12.7(1/2) Ø22.2(7/8)
OD19.05(3/4)
Facing
downwards
Within +/- 10°
Within ± 3°
Unit: mm(inch)
Ø 12.7(1/2)
Facing
upwards
Within ± 3°