16
ENGLISH
The center shall match
Refrigerant pipe Flare nut
Socket flare Flare nut
Torque wrench
Monkey spanner
Do not bend the pipe 2 or more times, and work with the bigger
radius.
If the pipe is bent, the cooling/heating performance is degraded, and it
may cause failure.
Do not remove the cap of the flare surface until the locking work.
If dust, earth, etc. enters inside the pipe, it may cause failure.
Bend carefully along the wall, and connect to the outdoor unit valve.
Refrigerant pipe locking torque
Pipe outer diameter Ø 6.35 Ø 9.52 Ø 12.7 Ø 15.88
Torque 16±2 38±4 55±6 75±7
h The exterior of the product may be different for each model.
Piping parts
Name
① Main pipe
② Branching pipe
③ Indoor unit connecting pipe
Selection
of
pipe size
Outdoor unit
capacity[HP]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
6
Ø 9.52(3/8) Ø 19.05(3/4)
5
Ø 9.52(3/8) Ø 15.88(5/8)
4
Ø 9.52(3/8) Ø 15.88(5/8)
① Size of main pipe
② Pipe size of between branching sections
③ Connecting pipe size of indoor unit
Indoor unit capacity
[kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19 100)
Ø 6.35(1/4) Ø 12.7(1/2)
< 16.0(54 600)
Ø 9.52(3/8) Ø 15.88(5/8)
< 22.4(76 400) Ø 9.52(3/8) Ø 19.05(3/4)
Indoor unit capacity
[kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19 100)
Ø 6.35(1/4) Ø 12.7(1/2)
< 16.0(54 600)
Ø 9.52(3/8) Ø 15.88(5/8)
≤ 22.4(76 400)
Ø 9.52(3/8) Ø 19.05(3/4)
① Outdoor unit ’ 1st branching section
② Branching section
’ Branching section
③ Branching section
’ Indoor unit
Outdoor unit
Gas pipe
Main pipe
Liquid pipe
Branching
pipe
Branching
pipe
Indoor unit
Selection of Refrigerant Piping
U36A Chassis (1 FAN model)
Connect the refrigerant pipe, and after the refrigerant leakage
inspection, cover with insulation material and wrap with vinyl tape.
Tighten the flare nut according to the specified torque. (until there is a
"click" sound in the torque wrench part)
PIPE CONNECTIONS BETWEEN
INDOOR AND OUTDOOR UNIT
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