haier AC142XCERA - Manual (Page 15)

13
Installation Procedures
(1) Dimension of connecting pipe
(2) The maximum length and drop height of connecting pipe
Cautions for piping connection
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.
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.
(3) Piping connection
Connecting method
Spanner
Spanner
Joint
N u t
If not aligned ,tighten the nut by force will
damage the nut that result in gas leakage
Please refer to the installation manual of outdoor unit
To ensure the efficiency , Pipes shall be as short as possible.
Fit the nut on and fasten
AC142XCERA
AC182XCERA
Flare connection
Gas pipe
3-way valve
Indoor
Unit Outdoor
unit
Liquid
pipe
2-way valve
Flare connection
A
Diameter of Pipe
Liquid Pipe 6.35mm
Gas Pipe 12.7mm
Tighten Torque
(N. m)
11.8
49.0
A (adaptor, from 9.52 to 12.7)
To outdoor unit To gas pipe
90 0.5
O
Gas pipe
Liquid pipe
12.7mm
6.35mm
AC142XCERA
AC182XCERA
3. PIPING CONNECTION