INSTALLATION MANUAL FOR OUTDOOR UNIT
(1) Outline piping
4. Refrigerant piping
(2) Piping size
(3) Limitations for one way piping length and vertical height difference.
One way piping length: less than 30m .
Vertical height difference: Less than 15m .
90
*
0.5
Outdoor
unit
Service valve
Flare connection
Check joint
Gas pipe
Liquid
pipe
Flare connection
Indoor
unit
Install the removed flared nuts to the pipes to be connected,
then flare the pipes.
Precautions for refrigerant piping
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
13
Gas piping
Liquid piping
15.88(5/8")
x
1.0mm
9.52(3/8")
x
0.8mm
(4) Piping connection
Forced fastening without centering
may damage the threads and cause
a gas leakage.
Connecting method
Apply refrigerant oil at half union and flare nut.
To bend a pipe, give the roundness as large as possible not to crash the pipe.
When connecting pipe, hold the pipe centre to centre then screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter the pipe.
Pipe dia
Fastening torque
40N.m
60N.m
Liquid pipe 9.52mm(3/8")
Gas pipe 15.88mm(5/8")
Summary of Contents for AD182AMBIA
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