One way piping length:
less than 30m (for
AU242AHBEA
).
Vertical height difference:
less than 20m (for
AU242AHBEA
).
(2) Piping size
AU242AHBEA
Install the removed flare nuts to
the pipes to be connected, then
flare the pipes.
90+0.5
Pipe dia Fastening torque
Liquid pipe 9.52mm
Gas pipe 15.88mm
42N
.
m
98N
.
m
Liquid pipe
Gas pipe
9.52x0.8mm
15.88x1.0mm
(3) Limitations for one way piping length and vertical height difference.
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.
(4) Piping connection
Forced fastening without centering may damage
the threads and cause a gas leakage.
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