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Installation Procedure
4 Slide a flare nut on to the pipe and flare the pipe.
D
Flare
Pipe
Outer Diameter
(D)
mm
inch
mm
Ø6.35
1/4
1.3
Ø9.52
3/8
1.8
Ø12.70
1/2
2.0
Ø15.88
5/8
2.2
5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
1
2
Correct
Inclined
CAUTION
• If the pipes require brazing ensure that OFN (Oxygen
Free Nitrogen) is flowing through the system.
• Nitrogen blowing pressure range is 2.9 to 7.3 psi
(0.02 to 0.05 MPa).
18
English
DB68-12535A-00_IM_23Y FJM Outdoor_AA_EN_.indd 18
DB68-12535A-00_IM_23Y FJM Outdoor_AA_EN_.indd 18
R0.02 to 0.03 inch
A
(R 0.4 to 0.8 mm)
L
Flare
Depth (A)
Flare dimension (L)
inch
mm
inch
0.051
8.7 to 9.1
0.34 to 0.36
0.071
12.8 to 13.2
0.50 to 0.52
0.079
16.2 to 16.6
0.64 to 0.65
0.087
19.3 to 19.7
0.76 to 0.78
3
Damaged
Uneven
Cracked
Surface
Thickness
Step 7 Connecting refrigerant pipes
and vacuuming
WARNING
• When installing, make sure there is no leakage. When
D
recovering the refrigerant, ground the compressor first
before removing the connection pipe. If the refrigerant
pipe is not properly connected and the compressor
works with the service valve open, the pipe inhales the
air and it makes the pressure inside of the refrigerant
cycle abnormally high. It may cause explosion and injury.
The outdoor unit is loaded with sufficient R-410A
refrigerant. Do not vent R-410A into atmosphere: it is a
fluorinated greenhouse gas, covered by Kyoto Protocol,
with a Global Warming Potential (GWP) = 2088.
You should purge the air in the indoor unit and in the
pipe. If air remains in the refrigerant pipes, it affects the
compressor. It may cause reduction of cooling capacity
and malfunction. Refrigerant for air purging is not
charged in the outdoor unit. Use Vacuum Pump as seen
in the picture.
1 Check the piping connections.
2 Connect the charging hose of low pressure side of
manifold gauge to the stop valve having a service port.
Model Name
AJ020CXS3CH
AJ024CXS4CH
AJ030CXS4CH
AJ036CXS4CH
AJ036BXJ4CH
AJ048BXJ5CH
Valve
3/8''
1/2''
3
-
2
2
3
2023-09-22 오후 1:46:56
2023-09-22 오후 1:46:56
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