Connection Of Outdoor Units - LG Multi V Plus II System Installation Manual

Refrigerant piping installation

Connection of Outdoor units

2 outdoor units
Model
Connection of gas pipe
Don't cut the pipe less
than 70mm
Ø 19.05
Ø 28.58
Ø 22.2
ARCNN20
Ø15.88
OD19.05
3 Outdoor Units
Model
Connection of gas pipe
Don't cut the pipe less
than 70mm
Ø 19.05
Ø 22.2
Ø15.88
OD19.05
ARCNN20
Connection of liquid pipe
Ø 9.52
Ø 12.7
Ø9.52
OD12.7
Y branch
A
To outdoor unit
A
To branch piping or indoor unit
B
26 Outdoor Unit
Blow nitrogen
while brazing
Ø 34.9
Main outdoor
Ø 28.58
gas pipe
Ø 31.8
Ø 28.58
Main pipe
Ø19.05 OD34.9
OD28.58
Ø22.2 Ø38.1
Blow nitrogen
while brazing
Ø 34.9
Sub1 outdoor
Ø 28.58
gas pipe
Ø 31.8
Ø 28.58
Ø 28.58
Ø19.05
OD34.9
OD28.58
Ø22.2 Ø38.1
Sub1 outdoor unit
Ø 12.7
Ø 19.05 Ø 12.7
Ø 15.88
OD19.05
Ø22.2
B
Connection of liquid pipe
Ø 9.52
Ø 12.7
Ø9.52
Model
Connection of gas pipe
Don't cut the pipe less
than 70mm
ARCNN30
Connection of liquid pipe
Ø 12.7
Within +/- 10°
Viewed from point A
in direction of arrow
Main outdoor
liquid pipe
Ø 12.7
Ø 19.05 Ø 12.7
Ø 15.88
Main pipe
OD12.7 Ø22.2
OD19.05
Blow nitrogen
while brazing
Main outdoor
Ø 28.58
gas pipe
Ø 34.9
Ø 28.58
Ø19.05
OD28.58
Ø22.2
Main outdoor unit
Ø 12.7
Ø 19.05
Ø 15.88
Ø9.52
OD12.7
Facing Facing
downwards upwards
Within ± 3° Within ± 3°
Ø 41.3
Ø 38.1
Ø 34.9
Main pipe
Ø 22.2 Ø 19.05
Main pipe