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Installation
Flaring Work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the
following procedure.
Cut the pipes and the cable.
1. Use the piping kit accessory or the pipes
purchased locally.
2. Measure the distance between the indoor and
the outdoor unit.
3. Cut the pipes a little longer than measured
distance.
4. Cut the cable 1.5m longer than the pipe length.
Burrs removal
1. Completely remove all burrs from the cut cross
section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.
Putting nut on
• Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube having
completed burr removal.
(not possible to put them on after flaring work)
Flaring work
1. Firmly hold copper pipe in a die in the
dimension shown in the table below.
2. Carry out flaring work with the flaring tool.
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Ø19.05
Check
1. Compare the flared work with the figure by.
2. If a flared section is defective, cut it off and
do flaring work again.
12 Air Conditioner
A
inch
mm
1/4
1.1~1.3
3/8
1.5~1.7
1/2
1.6~1.8
5/8
1.6~1.8
3/4
1.9~2.1
Copper
pipe
90°
Point down
Copper tube
Bar
Copper pipe
Clamp handle
Smooth all round
Inside is shiny without scratches
Inclined
Even length
all round
Slanted Uneven Rough
Pipe
Reamer
Flare nut
Handle
Bar
Yoke
Cone
Red arrow mark
= Improper flaring =
Surface
Cracked Uneven
damaged
thickness
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