Haier AB142ACBAC Operation Manual - page 28
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Piping Connection
(1) Dimension of connecting pipe
Fit the nut on and fasten
(2) The maximum length and drop height of connecting pipe
The maximum length is 10m
The maximum drop height is 5m.
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.
Spanner
Spanner
Joint
N u t
(3) 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.
Diameter of Pipe
Liquid Pipe 6.35mm
Gas Pipe 12.7mm
Tighten Torque
18 N. m
50N. m
If not aligned ,tighten the nut by force will
damage the nut that result in gas leakage
Flare connection
Gas pipe
3-way valve
Indoor
Unit
Outdoor
unit
Liquid
pipe
2-way valve
Flare connection
90 + 0.5
12.7mm
6.35mm
Gas pipe
Liquid pipe
Installation Procedures