97.2-118.6N
.
m
Precautions for refrigerant piping
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
Connecting method (indoor unit)
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to crush
the pipe.
When connecting pipe, hold the pipe centre to centre then
screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter
the pipe.
Piping connection
Forced fastening without centering
may damage the threads and cause
a gas leakage.
Pipe dia Fastening torque
Liquid pipe 6.35mm
Gas pipe 15.88mm
Liquid pipe 9.52mm
Gas pipe 19.05mm
14.2-17.2N
.
m
61.8-75.4N
.
m
32.7-39.9N
.
m
Gas pipe 12.7mm
49.5-60.3N
.
m
Piping size
Connect the flare nuts to the pipes, and then flare the pipes.
Gas pipe
15.88x1.0mm
Liquid pipe
6.35x0.8mm
90+0.5
Outline piping
Refrigerant piping
Outdoor
unit
Gas pipe
Liquid
pipe
Flare connection
Indoor
unit
3-way stop valve
2-way stop valve
500
256
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-185-
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