2. Connection of pipe
Apply refrigerant oil on half union and flare nut.
To bend a pipe, give the roundness as large as possible not to crush the pipe.
Connecting the pipe of gas side firstly makes working easier.
Refrigerant piping work
L1
L2
L3
h
H +
A
B
C
H -
The piping length information, please refer the following table.
Descriptions
Standard
A, B, C liquid pipe
A, B, C Gas pipe
mm
Item
Maximum
Unit
L1 (one way)
L2 (one way)
L3 (one way)
h
H +
H -
mm
m
m
m
m
m
m
Size of the liquid side connection pipe
Pipe length when the compressor connects with two indoor units
Drop between every two indoor units
Drop between the outdoor unit and the indoor unit
*10
*1
*5
*5
/
/
Size of the gas side connection pipe
Pipe length when the compressor connects with two indoor units
Pipe length when the compressor connects only one indoor unit
Drop between the outdoor unit and the indoor unit
6.35
9.52
*10
*10
*30
*5
*15
*10
*30
*30
L1+L2+L3
m Total liquid piping length
*30
*45
Liquid pipe
Gas pipe
6.35mm ( 1/4'' ) x 0.8mm
9.52mm ( 3/8'' ) x 0.8mm
1. Selection of pipe
To this unit, both liquid and gas pipes shall be insulated as they become low temperature in operation.
Use optional parts for piping set or pipes covered with equivalent insulation material.
3. Limitations data on the piping work .
Commercial Air Conditioner
Model: AU18
/22
2XFERA
AS072/092/122XVERA
-20-
