Piping Connection; Refrigerant Piping; Piping Size - Haier AU282AHBEA Service Manual

Refrigerant piping

Outline piping
Flare connection
Indoor
unit

Piping size

Liquid pipe
6.35x0.8mm
Gas pipe
15.88x1.0mm
Connect the flare nuts to the pipes, and then flare the pipes.
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.

Piping connection

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.
Forced fastening without centering
may damage the threads and cause
a gas leakage.
500
Gas pipe
Liquid
pipe
90+0.5
-185-
>a__WcU[S^ <[c >a`V[e[a`Wc
3-way stop valve
Pipe dia
Liquid pipe 6.35mm
Liquid pipe 9.52mm
Gas pipe 12.7mm
Gas pipe 15.88mm
Gas pipe 19.05mm
Outdoor
unit
2-way stop valve
Fastening torque
14.2-17.2N . m
32.7-39.9N . m
49.5-60.3N . m
61.8-75.4N . m
97.2-118.6N . m