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2. Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Point down
Step 3: Flare pipe ends
Proper aring is essential to achieve an airtight
seal.
1. After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place are nuts on both ends of pipe.
Make sure they are facing in the right
direction, because you can't put them on
or change their direction after flaring.
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when
ready to perform aring work.
5. Clamp are form on the end of the pipe.
The end of the pipe must extend beyond
the are form.
Flare form
Pipe
Reamer
Pipe
6.
Place aring tool onto the form.
7.
Turn the handle of the aring tool
clockwise until the pipe is fully ared. Flare
the pipe in accordance with the dimensions.
PIPING EXTENSION BEYOND FLARE FORM
Pipe
Tightening
Flare dimension (A)
torque
(Unit: mm/Inch)
gauge
Min.
18-20 N.m
8.4/0.33
Ø 6.35
(180-200 kgf.cm)
32-39 N.m
Ø 9.52
13.2/0.52
(320-390 kgf.cm)
49-59 N.m
16.2/0.64
Ø 12.7
(490-590 kgf.cm)
57-71 N.m
Ø 16
19.2/0.76
(570-710 kgf.cm)
67-101 N.m
Ø 19
23.2/0.91
(670-1010 kgf.cm)
85-110N.m
Ø 22
26.4/1.04
(850-1100 kgf.cm)
8. Remove the aring tool and are form,
then inspect the end of the pipe for cracks
and even aring.
Step 4: Connect pipes
Connect the copper pipes to the indoor unit rst,
then connect it to the outdoor unit. You should
rst connect the low-pressure pipe, then the high-
pressure pipe.
1. When connecting the are nuts, apply a
thin coat of refrigeration oil to the ared
ends of the pipes.
2. Align the center of the two pipes that you
will connect.
Indoor unit tubing
3. Tighten the are nut as tightly as possible
by hand.
4. Using a spanner, grip the nut on the unit
tubing.
Flare shape
Max .
90 ° ± 4
8.7/0.34
13.5/0.53
A
16.5/0.65
R0.4~0.8
19.7/0.78
23.7/0.93
26.9/1.06
Pipe
Flare nut
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