37
Burr 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 direc-
tion 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
Firmly hold copper pipe in a die in the dimension shown in
the table above.
Carry out flaring work using flaring tool as shown below.
Check
1.Compare the flared work with figure below.
2.If flare is noted to be defective, cut off the flared section and re-
flare it.
• For walls containing metal frame or metal board, be sure to use
a wall embedded pipe and wall cover in the feed-through hole to
prevent possible heat, electrical shock, or fire.
• Be sure to caulk the gaps around the pipes with caulking mate-
rial to prevent water leakage.
1) Bore a feed-through hole of 65mm in the wall so it has a down
slope toward the outside.
2) Insert a wall pipe into the hole.
3) Insert a wall cover into wall pipe.
4) After completing refrigerant piping, wiring, and drain piping,
caulk pipe hole gap with putty.
3.1 Flaring work
Flaring work
Main cause for refrigerant leakage is due to defect in theflaring
work. Carry out correct flaring work using the follow-ing procedure.
Cut the pipes and the cable
1. Use the piping kit accessory or pipes purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than the measured distance.
4. Cut the cable 1.5m longer than the pipe length.
Recommended mounting plate retention spots and
dimensions
770
Use tape measure
as shown.
Position the end of
a tape measure at
.
Keep here the piece cut out
from the unit for piping
Unit: mm
Gas pipe end
Through-
the-wall
hole φ65mm
Recommended mounting plate
retention spots (5 spots in all)
Place a leveler
on raised tab.
41.3
41.3
241.7
54
330.5
241.7
160
54.5
50
160
101
120.5
331
203
247
Drain hose
position
Liquid pipe end
* The removed pipe port cover can be
kept in the mounting plate pocket.
Removed pipe
port cover
A
Mounting plate
Copper
pipe
90
e
Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
mm
inch
mm
Ø6.35
1/4
0~0.5
Ø9.52
3/8
0~0.5
Ø12.7
1/2
0~0.5
Ø15.88
5/8
0~1.0
Ø19.05
3/4
1.0~1.3
Outside diameter
A
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Installation Manual
Inside
Outside
Caulking
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
Wall embedded pipe
(field supply)
φ 65
