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169
APPENDIX
Appendix 3: Pipe Expanding Method
F:Inspection
Improper expanding
The length is equal
surface
leaning
damaged
Check the quality of expanding port. If there is any blemish, expand the
port again according to the steps above.
crack uneven
thickness
Smooth surface
Downwards
Pipe
Shaper
Union pipe
Pipe
Expander
Hard
mold
Pipe
Pipe
Pipe cutter
Leaning Uneven Burr
B:Remove the burrs
C:Put on suitable insulating pipe
Confirm the pipe length according to the distance of indoor unit and outdoor unit.
Cut the required pipe with pipe cutter.
D:Put on the union nut
Remove the burrs with shaper and prevent the burrs from getting into the pipe.
A:Cut the pip
E:Expand the port
Remove the union nut on the indoor connection pipe and outdoor valve; install
the union nut on the pipe.
Outer diameter(inch)
A(inch)
Max Min
Ф1/4
Expand the port with expander.
"A" is different according to the diameter, please refer to the sheet below:
2/39 1/36
Ф3/8 1/16 1/51
Ф1/2 1/14 1/51
Ф5/8 5/53 2/23
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