haier AU182XFERA - Manual (Page 10)

8
Refrigerant piping work
Forced fastening without careful centering may damage the threads and cause a
leakage of gas.
Pipe Diameter ( ) Fastening Torque
Liquid Side 6.35mm (1/4'') 18N.m
Gas Side 9.52mm (3/8'') 50N.m
3. Attaching Drain-Elbow
Drain elbow
Hose
If the drain-elbow is used, please attach it as figure.
Flare nut Half union
Torque wrench Spanner
Liquid pipe
Gas pipe
6.35mm ( 1/4'' ) x 0.8mm
9.52mm ( 3/8'' ) x 0.8mm
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.
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.