Haier AD18LS1ERA Service Manual page 60

3. PIPING CONNECTION
Fit the nut on and fasten
The maximum length and drop height of connecting pipe
Please refer to the installation manual of outdoor unit
To ensure the efficiency , Pipes shall be as short as possible.
Cautions for piping connection
Do not twist or deform the connecting pipe.
Do not mix dusts.
The bending radius shall be as large as possible.
Both gas pipe and liquid pipe shall be heat insulation.
No leakage in the flare.
Piping connection
Connecting method
Smear refrigerant oil on the joints of piping and flare.
The bending radius shall be as large as possible.
Align the pipe center when fastening, and tighten the
nut, as shown in the figure.
Pay attention to not mix foreign matters such as sands
in.
90 0.5
Spanner
Spanner
Diameter of Pipe
Liquid Pipe 6.35mm
Gas Pipe 12.7mm
If not aligned ,tighten the nut by force will
damage the nut that result in gas leakage
-59-
O
Joint
N ut
Tighten Torque
(N. m)
11.8
49.0