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Installation Procedures
3. PIPING CONNECTION
AC142XCERA
AC182XCERA
To gas pipe
(1) Dimension of connecting pipe
Fit the nut on and fasten
(2) 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.
(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.
Flare connection
Gas pipe
Indoor
Unit
Liquid
pipe
A
(adaptor, from 9.52 to 12.7)
AC142XCERA
AC182XCERA
3-way valve
A
Outdoor
unit
2-way valve
Flare connection
Gas pipe
12.7mm
Liquid pipe
6.35mm
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
13
To outdoor unit
O
Tighten Torque
Joint
N u t
(N. m)
11.8
49.0
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