Remove the burrs with shaper and prevent the
burrs from getting into the pipe.
Remove the union nut on the indoor connection
pipe and outdoor valve;
install the union nut on
the pipe.
Expand the port with expander.
Check the quality of expanding port. If there is
any blemish, expand the port again according to
the steps above.
Working temperature range
union pipe
pipe
C: Put on suitable insulating pipe
21
smooth surface
improper expanding
the length is equal
leaning damaged crack
surface
uneven
thickness
expander
pipe
hard
mold
Notice
●
A(mm)
Max
Min
Φ6 - 6.35(1/4")
1.3
0.7
Φ9.52(3/8")
1.6
1.0
Φ12-12.7(1/2")
1.8
1.0
Φ15.8-16(5/8")
2.4
2.2
Outer diameter
(mm)
●
B: Remove the burrs
D: Put on the union nut
●
●
E: Expand the port
F: Inspection
●
shaper
downwards
pipe
"A" is different according to the diameter, please refer
to the sheet below:
43/26
32/23
2
7
/-
24/18
Outdoor side
DB
/
WB
（℃）
Maximum
cooling
Maximum
Notice
●
heating
Indoor side
DB
/
WB
（℃）
The operating temperature range (outdoor tem
-
perature) for cooling only unit is 18
℃
~ 43
℃
;
for heat pump unit is
-15
℃
~
43
℃
.
