Refrigerant Piping
ENGLISH
Installation Manual 25
Selection of Refrigerant Piping
Selection of pipe sizeName
Size of main pipe
Pipe size of between branching sections
Connecting pipe size of indoor unit
Piping partsNo.
Outdoor unit
↓
1st branching section
Branching section
↓
Branching section
Branching section
↓
Indoor unit
Main pipe
①
②
③
Branching pipe
Indoor unit
connecting pipe
Outdoor unit capacity type
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
4 HP Ø9.52(3/8) Ø15.88(5/8)
5 HP Ø9.52(3/8) Ø15.88(5/8)
6 HP Ø9.52(3/8) Ø19.05(3/4)
Indoor unit capacity[kW(Btu/h)]
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2)
< 16.0(54,000) Ø9.52(3/8) Ø15.88(5/8)
Indoor unit capacity[kW(Btu/h)]
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2)
< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)
< 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)
Outdoor unit
Gas pipe
Main pipe
Liquid pipe
Branching
pipe
Branching
pipe
Indoor unit
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