Pipe Expanding Method - Lennox LI036HI-180P432 Owner's Manual

Pipe expanding method

Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please expand
the pipe according to the following steps:
the distance of indoor unit and
outdoor unit.
pipe
leaning
B: Remove the burrs
prevent the burrs from getting into
the pipe.
pipe
downwards
C: Put on suitable insulating pipe
D: Put on the union nut
connection pipe and outdoor valve;
install the union nut on the pipe.
union pipe
pipe
E: Expand the port
pipe cutter
Note:
uneven burr
shaper
F: Inspection
36
expander
diameter, please refer to the sheet
below:
Outer diameter
(mm)
Max
If there is any blemish, expand the
port again according to the steps
above.
smooth surface
improper expanding
leaning damaged
surface
the length is equal
hard
mold
pipe
Min
1.3 0.7
1.6 1.0
1.8 1.0
2.4 2.2
crack uneven
thickness