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Burrs removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.
Putting nut on
- Remove flare nuts attached to indoor and
outdoor units, then put them on the pipe/tube
which have completed its burr removal.
(not possible to put them on after finishing
flare work)
Flare nut
Copper tube
Flaring work
1
Firmly hold copper pipe in a bar with the
dimension shown in table below.
2
Carry out flaring work with the flaring tool.
Outside diameter
mm
inch
Ø6.35
1/4"
Ø9.52
3/8"
Ø12.7
1/2"
Ø15.88
5/8"
A
Thickness
mm
mm
1.1~1.3
0.7
1.5~1.7
0.8
1.6~1.8
0.8
1.6~1.8
1.0
Bar
Bar
Copper pipe
Clamp handle
Check
1
Compare the flared work with the figures
given below.
2
If a flared section is defective, cut it off and
do flaring work again.
Smooth all round
Inside is shiny without scratches
Inclined
Even length
all round
Connecting the Piping
1
Pull the screw caps at the bottom of the
indoor unit
2
Remove the chassis cover from the unit by
loosing 3 screws
Chassis cover
11
Handle
Yoke
Cone
Red arrow mark
= Improper flaring =
Surface
Cracked Uneven
damaged
thickness
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