YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
YMGI: Your Modern Green Idea
74
Appendix 2: Pipe Expanding Method
Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please
expand the pipe
according to the following steps:
A.
Confirm the pipe length according to the distance of indoor unit
and outdoor unit.
Cut the required pipe with pipe cutter.
B. Remove the burrs
● Remove the burrs with shaper and prevent the burrs from
getting into the pipe.
C. Put on suitable pipe insulation
D.
Put on the union nut
Remove the union nut on the indoor connection pipe and outdoor valve;
install
the union nut on the pipe.
E.
Expand the port
Expand the port with expander.
N
ote:
"A" is different according to the diameter, please refer to the
sheet below
Outer
diameter(inch)
A(inch)
Max
Min
Ф1/4
2/39
1/36
Ф3/8
1/16
1/51
Ф1/2
1/14
1/51
Ф5/8
5/53
2/23