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–19–

Main cause of gas leakage is defect in flaring work. Carry
out correct flaring work in the following procedure.

■

Use the accessory piping kit or the pipes purchased
locally.

■

Measure the distance between the indoor and the out-
door unit.

■

Cut the pipes a little longer than measured distance.

■

Cut the cable 1.5m longer than the pipe length.

■

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.

■

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)

■

Carry out flaring work using flaring tool as shown
below.

Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.

■

Compare the flared work with figure below.

■

If flare is noted to be defective, cut off the flared sec-
tion and do flaring work again.

Copper

tube

90

°

Slanted   Uneven  Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shining without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

Outside diameter

A

mm

inch

mm

Ø9.52

3/8

0.5~0.8

Ø15.88

5/8

0.8~1.0

–2–

–20–

1. Form the piping according to its routing. Avoid

bending and bending back the same piping point
more than three times. (This will result in hard-
ening the pipe.)

2. After deforming the piping, align centers of the

union fitting of the indoor unit and the piping, and
tighten them firmly with wrenches.

3. Connect pipe to the service valve or ball valve

which is located below the outdoor unit.

4. After completing the piping connection, be sure

to check if there is gas leakage in indoor and
outdoor connection.

After completing the piping connection, execute
vacuum drying for the connecting piping and the
indoor unit.
The vacuum drying must be carried out using the
service ports of both the liquid and gas side valves.

Outdoor

unit

Liquid side

Flare connection

Gas side

Indoor 

B unit

Indoor 

A unit

Union

Liquid side piping

Gas side piping

Ø 9.52mm

Ø15.88mm

Flare nut fastening torque

Ø6.35mm

1.8kg.mm

Ø12.7mm

5.5kg.mm

Ø9.52mm

4.0kg.mm

Ø15.88mm

6.6kg.mm

–21–

1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount

10mm in length.)
The fixing screws (hexagon M5 screw) are included the decorative panel box.

2. Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decorative panel key hole (          ) on the screws fixed in step above, and slide the panel so that

the screws reach the key hole edge.

4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector.
6. After tightening these screws, install the air inlet grille (including the air filter).

Decorative panel fixing screws
(hexagon M5 screws)
Temporality fitting at 2 places
(Tightening about 10mm)

Decorative panel

Louver motor 
connector

Install the panel after 
making sure that the
piping side of the unit body 
matches the piping 
indication of the decorative 
panel

Control box 
cover

Louver motor connector
(In the control box)

Air conditioner unit

Piping side

Inlet Grille

Decorative panel fixing screws 
(Hexagon M5 screw)

Key holes

The arrow (     ) should point 
to the side where the pipes are.

¡

¡

ÿ

• Louver motor housing consists in main PCB
• Open control cover, then connect louver motor connector to

louver motor housing in main PCB.