Table of Contents
Advertisement
3. Connecting Pipes to the Indoor Unit
3-1. Preparation of Piping
Main cause of gas leakage is defect in
flaring work. Carry out correct flaring work
in the following procedure.
1) Cut the pipes and the cable.
■Use the accessory piping kit or the pipes
purchased locally.
■Measure the distance between the
indoor and the outdoor unit.
■Cut the pipes a little longer than
measured distance.
■Cut the cable 1.5m longer than the pipe
length.
2) Burrs removal
■Completely remove all burrs from the cut
cross section of pipe/tube.
■Put the end of the copper tube/pipe to
downward direction as you remove burrs
in order to avoid to let burrs drop in the
tubing.
3) Putting nut on
■Remove flare nuts attached to indoor
and outdoor units, than put them on
pipe/tube having completed burr
removal.
(Not possible to put them on after flaring
work)
4) Flaring work
■Carry out flaring work using flaring tool
as shown below.
Outside Diameter
1/4"
3/8"
1/2"
5/8"
3/4"
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
5) Check
■Compare the flared work with figure.
■If flare is noted to be defective, cut off
the flared section and do flaring work
again.
Copper
tube
Bar
"A"
1.1~1.3
1.5~1.7
1.6~1.8
1.6~1.8
1.9~2.1
Smooth all round
Even length
all round
14
Slanted Uneven Rough
90°
Pipe
Point down
Flare nut
Copper tube
Bar
"A"
Copper pipe
Clamp handle
Inside is shining without scratches.
= Improper flaring =
Inclined
Surface
damaged
Reamer
Handle
Yoke
Cone
Red arrow mark
Cracked Uneven
thickness
Hide quick links:
Advertisement
Table of Contents
