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•
Clamp flare from on the end of the pipe. The end
of the pipe must extend beyond the flare form.
Flare form
•
Place flaring tool onto the form.
•
Turn the handle of the flaring tool clockwise
until the pipe is fully flared.
PIPING EXTENSION BEYOND FLARE FORM
Pipe
Tightening
gauge
torque
(180-200kgf.cm)
32-39 N.m
(320-390kgf.cm)
49-59 N.m
(490-590kgf.cm)
57-71 N.m
(570-710kgf.cm)
67-101 N.m
(670-1010kgf.cm)
85-110 N.m
(850-1100kgf.cm)
•
Remove the flaring tool and flare form, then
inspect the end of the pipe for cracks and even
flaring.
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
highpressure pipe.
When connecting the flare nuts, apply a thin
•
coat of refrigeration oil to the flared ends of
the pipes.
•
Align the center of the two pipes that you will
connect.
•
Tighten the flare nut snugly by hand.
•
Using a wrench, grip the nut on the unit tubing.
•
While firmly gripping the nut, use a torque
wrench to tighten the flare nut according to
the torque values in above table.
NOTICE
Use both a spanner and a torque wrench
when connecting or disconnecting pipes
to/from the unit.
Pipe
Flare dimension(A)
(Unit:mm/lnch)
Flare shape
Min.
Max.
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.
NOTICE
MINIMUM BEND RADIUS
Carefully bend the tubing in the
middle according to the diagram
below.
DO NOT bend the tubing more than
Use appropriate tool
90° or more than 3 times.
min-radius 10cm(3.9 )
•
After connecting the copper pipes to the
indoor unit, wrap the power cable, signal
cable and the piping together with
binding tape.
NOTICE
DO NOT intertwine signal cable with
other wires. While bundling these
items together. Do not intertwine or
cross the signal cable with any other
wiring.
37
(Bigger
Torque wrench
V.1
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