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–23–

1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport. 

Check the screws for loose connection. 
(Running the air conditioner with loose connection can overload and damage electrical components.)

5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.

Main power source

Switch box

Refrigerant pipe

Circuit Breaker

Use circuit breaker or time delay fuse.

1. Remove the Cover control from the unit by loosening a screw.

Connect the wires to the terminals on the control board individually as following. 

2. Secure the cable onto the control board with the holder (clamper). 
3. Refix the cover control to the original position with the screw.
4. Use a recongnized circuit breaker 20A(36K, 48K) between the power source and the unit. A disconnection

device to adequately disconnect all supply lines must be fitted.

Terminal block

Cord Clamper

Cover control

Power supply 
cord

3øPower

Terminal block

Cord Clamper

Cover control

Power supply 
cord

3øPower

–24–

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 direc-
tion 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 section
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

Ø19.05

3/4

0.8~1.0

–25–

1. Form the piping according to its routing. Avoid bend-

ing and bending back the same piping point more
than three times. (This will result in hardening 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 ser-
vice ports of both the liquid and gas side valves.

Outdoor

unit

Liquid side

Flare connection

Flare connection

Gas side

Indoor 

unit

Union

Flare nut fastening torque

Ø6.35mm

1.8 kg.m

Ø9.52mm

4.0 kg.m

Ø12.7mm

5.5 kg.m

Ø15.88mm

6.6 kg.m

Ø19.05mm

6.6 kg.m

Model

Liquid side piping

Gas side piping

36K Btu/h

Ø 9.52mm

Ø15.88mm

48K But/h

Ø 9.52mm

Ø19.05mm

–26–

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 indoor unit 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 and display connector.
6. After tightening these screws, install the air inlet grille (including the air filter).

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

Control box cover

Piping side

Inlet Grille

Inlet Grille

Inlet Grille

Louver motor

Decorative panel fixing screws 
(Hexagon M5 screw)

Air conditioner unit

Decorative panel

Key holes

Display

Lead wire for 
louver motor and
display