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5. Clamp flare form on the end of the
pipe. The end of the pipe must extend
beyond the flare form.
Flare form
6.
Place flaring tool onto the form.
7.
Turn the handle of the flaring tool
clockwise until the pipe is fully
flared. Flare the pipe in accordance
with the dimensions.
PIPING EXTENSION BEYOND FLARE FORM
Pipe
Tightening
(A) (Unit: mm/Inch)
torque
gauge
18-20 N.m
Ø 6.35
(183-204 kgf.cm)
25-26 N.m
Ø 9.52
(255-265 kgf.cm)
35-36 N.m
Ø 12.7
(357-367 kgf.cm)
45-47 N.m
Ø 16
(459-480 kgf.cm)
65-67 N.m
Ø 19
(663-683 kgf.cm) 23.2/0.91
75-85N.m
Ø 22
(765-867 kgf.cm) 26.4/1.04
8. Remove the flaring tool and flare
form, then inspect the end of the pipe
for cracks and even flaring.
Pipe
Flare dimension
Flare shape
Min.
Max.
90 ± ° 4
8.4/0.33
8.7/0.34
13.2/0.52
13.5/0.53
16.2/0.64 16.5/0.65
19.2/0.76
19.7/0.78
23.7/0.93
26.9/1.06
Step 4: Connect pipes
Connect the copper pipes to the indoor
unit first, then connect it to the outdoor
unit. You should first connect the low-
pressure pipe, then the high-pressure
pipe.
1.
When connecting the flare nuts,
apply a thin coat of refrigeration oil
to the flared ends of the pipes.
2.
Align the center of the two pipes
that you will connect.
Indoor unit tubing
Tighten the flare nut as tightly as
3.
possible by hand.
Using a spanner, grip the nut on
4.
the unit tubing.
5. While firmly gripping the nut, use a
torque wrench to tighten the flare nut
according to the torque values in
above table.
A
R0.4~0.8
NOTE: Use both a spanner and a torque
wrench when connecting or discon-
necting pipes to/from the unit.
CAUTION
Ensure to wrap insulation around
the piping. Direct contact with the
bare piping may result in burns or
frostbite.
Make sure the pipe is properly
connected. Over tightening may
damage the bell mouth and under
tightening may lead to leakage.
30
Flare nut
Pipe
V.1
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