Installation Procedures
7. Piping Connection
AB092XCERA
AB122XCERA
Flare connection | Gas pipe | |
|
| |
Indoor |
| Outdoor |
Unit |
| unit |
| Liquid | |
| pipe | |
|
| Flare connection |
AB142XCERA
AB182XCERA
Flare connection | Gas pipe | |
| A | |
|
| |
Indoor |
| Outdoor |
Unit |
| unit |
| Liquid | |
| pipe | |
|
| Flare connection |
A(adaptor, from
9.52 to 
12.7)
To gas pipe
To outdoor unit
(1) Dimension of connecting pipe
AB092XCERA
AB122XCERA
AB142XCERA
AB182XCERA
Gas pipe Liquid pipe Gas pipe Liquid pipe
9.52mm
6.35mm
12.7mm
6.35mm
Fit the nut on and fasten
(2) The maximum length and drop height of connecting pipe
The maximum length is 20m
The maximum drop height is 10m.
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.
90
0.5O
Joint
Spanner
Spanner | Nut |
|
Diameter of Pipe | Tighten Torque | |
(N.m) | ||
| ||
Liquid Pipe 6.35mm | 11.8 | |
|
| |
Gas Pipe 9.52mm | 40 | |
|
| |
Gas Pipe 12.7mm | 49.0 | |
|
|
If not aligned ,tighten the nut by force will damage the nut that result in gas leakage
16