LG ARUN50LH2A Installation Manual page 23

Selection of Refrigerant Piping
Outdoor unit
Gas pipe
Liquid pipe
Main pipe
No. Piping parts
Outdoor unit
①
↓
1st branching section
Branching section
②
↓
Branching section
Branching section
③
↓
Indoor unit
Branching
pipe
Branching
pipe
Name
Size of main pipe
Outdoor unit capacity[kW(Btu/h)]
Main pipe
Pipe size of between branching sections
Indoor unit capacity[kW(Btu/h)]
Branching pipe
Connecting pipe size of indoor unit
Indoor unit capacity[kW(Btu/h)]
Indoor unit
connecting pipe
Indoor unit
Selection of pipe size
11.0(37,500)
14.5(49,500)
16.0(54,600)
≤ 5.6(19,100)
< 16.0(54,600)
< 22.4(76,400)
≤ 5.6(19,100)
< 16.0(54,600)
Refrigerant Piping
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
Ø9.52(3/8) Ø15.88(5/8)
Ø9.52(3/8) Ø15.88(5/8)
Ø9.52(3/8) Ø19.05(3/4)
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
Ø6.35(1/4) Ø12.7(1/2)
Ø9.52(3/8) Ø15.88(5/8)
Ø9.52(3/8) Ø19.05(3/4)
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
Ø6.35(1/4) Ø12.7(1/2)
Ø9.52(3/8) Ø15.88(5/8)
Installation Manual 23