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Refrigerant Piping Work - Haier AU182XFERA Installation Manual

Outdoor unit r410a multi split series room air conditioner
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Refrigerant piping work

1. Selection of pipe
To this unit, both liquid and gas pipes shall be insulated as they become low temperature in operation.
Use optional parts for piping set or pipes covered with equivalent insulation material.
Liquid pipe
Gas pipe
2. Connection of pipe
Apply refrigerant oil on half union and flare nut.
To bend a pipe, give the roundness as large as possible not to crush the pipe.
Connecting the pipe of gas side firstly makes working easier.
Forced fastening without careful centering may damage the threads and cause a
leakage of gas.
Pipe Diameter ( )
Liquid Side 6.35mm (1/4'')
Gas Side 9.52mm (3/8'')
3. Attaching Drain-Elbow
If the drain-elbow is used, please attach it as figure.
Half union
Spanner
Drain elbow
6.35mm ( 1/4'' ) x 0.8mm
9.52mm ( 3/8'' ) x 0.8mm
Torque wrench
Fastening Torque
18N.m
50N.m
Hose
8
Flare nut

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Au222xfera