Airwell YUDA060, Service Manual

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2. Piping size
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.
Apply refrigerant oil to the joint and the flange.
To bend a pipe, give the roundness as possible not to crush
the pipe.
When connecting pipe, hold the pipe centre to centre and 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 method
Forced fastening without centering may damage the threads and cause a gas leakage.
Model
One way piping length
Vertical height difference
(between indoor and outdoor)
Install the removed flare nuts to the pipes
to be connected, then flare the pipes.
Liquid pipe
Gas pipe
9.52x0.8mm
19.05x1.0mm
90+0.5
Pipe diameter Fastening torque (N.m)
Liquid pipe 6.35mm
Gas pipe 15.88mm
Liquid pipe 9.52mm
Gas pipe 19.05mm
14.2-17.2
61.8-75.4
32.7-39.9
97.2-118.6
Gas pipe 12.7mm
49.5-60.3
Outdoor
unit
Gas pipe
Liquid
pipe
Flare connection
Indoor
unit
3-way stop valve
3-way stop valve
Sppanner
Sppanner
Nut
Joint
>_]]VbTZR\ <Zb >_^UZdZ_^Vb
less than 0 m 2 less than 0 m
Piping Connection
1. Piping diagram
YUDA060
YUDA060
YUDA060
5
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