Refrigerant Piping Installation - LG ARUN038GS2 Installation Manual

Refrigerant piping installation

Connection of Outdoor Units
2 outdoor units
Model
Low Pressure Gas Pipe
Ø34.9(1-3/8)
Ø31.8(1-1/4)
ARCNB20
Ø28.58(1-1/8)
OD34.9(1-3/8)
OD28.58(1-1/8)
Ø38.1(1-1/2)
3 outdoor units
Model
Connection of gas pipe
Don't cut the pipe less
than 70mm
Ø19.05(3/4) Ø
Ø22.2(7/8)
Ø15.88(5/8)
OD19.05(3/4)
ARCNN20 Connection of liquid pipe
Ø12.7(1/2)
Ø9.52(3/8)
Ø12.7(1/2)
Ø9.52(3/8)
OD12.7(1/2)
Y branch
A
To outdoor unit
A
B To branch piping or indoor unit
24 Outdoor Unit
Ø28.58(1-1/8)
Ø12.7(1/2)
Ø19.05(3/4)
Ø28.58(1-1/8)
Ø22.2(7/8)
Ø19.05(3/4) Ø15.88(5/8)
Ø22.2(7/8) OD19.05(3/4)
Blow nitrogen
while brazing
Ø 34.9(1-3/8)
Sub1 outdoor
Ø
28.58(1-1/8)
gas pipe
Ø
31.8(1-1/4)
28.58(1-1/8)
Ø 28.58(1-1/8)
Ø19.05(3/4)
OD34.9(1-3/8)
OD28.58
Ø38.1(1-1/2)
Ø22.2(7/8)
Sub1 outdoor unit
Ø19.05(3/4) Ø12.7(1/2)
Ø15.88(5/8)
OD19.05(3/4)
Ø22.2(7/8)
B
Liquid Pipe
Ø 9.52(3/8)
Ø12.7(1/2)
Ø19.05(3/4)
Ø12.7(1/2)
Ø15.88(5/8)
Ø22.2(7/8) OD12.7(1/2)
Ø9.52(3/8)
OD19.05(3/4)
Model
Connection of gas pipe
Don't cut the pipe less
than 70mm
ARCNN30 Connection of liquid pipe
Ø12.7(1/2)
Within +/- 10
Viewed from point A
in direction of arrow
High Pressure Gas Pipe
Ø22.2(7/8)
Ø28.58(1-1/8)
Ø22.2(7/8)
Ø15.88(5/8)
OD22.2(7/8)
Ø19.05(3/4)
Blow nitrogen
while brazing
Main outdoor
Ø28.58(1-1/8)
gas pipe
Ø34.9(1-3/8)
Ø28.58(1-1/8)
Main pipe
Ø19.05(3/4)
OD28.58(1-1/8)
Ø22.2(7/8)
Main outdoor unit
Ø12.7(1/2)
Ø22.2(7/8) Ø19.05(3/4)
Ø19.05(3/4)
Ø15.88(5/8)
Ø9.52(3/8)
OD12.7(1/2)
Facing Facing
downwards upwards
Within 3 Within 3
[Unit:mm(inch)]
Ø19.05(3/4)
Ø15.88(5/8)
Ø22.2(7/8)
[Unit:mm(inch)]
Ø41.3(16-3/5)
Ø38.1(1-1/2)
Ø34.9(1-3/8)
Main pipe