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The mounting wall is strong and solid enough to prevent it from
the vibration.

The centre of installation plate should be at more than 450 mm
at right and left of the wall.
The distance from installation plate edge to ceiling should more
than 67 mm.
From installation plate left edge to unit's left side is 74 mm.
From installation plate right edge to unit's right is 94 mm.

1. Mount the installation plate on the wall with 5 screws or

more.
(If mounting the unit on the concrete wall, consider using
anchor bolts.)

• Always mount the installation plate horizontally by

aligning the marking-off line with the thread and using a
level gauge.

2. Drill the piping plate hole with ø70 mm hole-core drill.

• Line according to the left and right side edge of the instal-

lation plate. The meeting point of the extended line is the
centre of the hole. Another method is by putting measur-
ing tape at position as shown in the diagram above. The
hole centre is obtained by measuring the
distance namely 150 mm and 125 mm for left and right
hole respectively.

• Drill the piping hole at either the right or the left and the

hole should be slightly slanted to the outdoor side.

1. Insert the piping sleeve to the hole.
2. Fix the bushing to the sleeve.
3. Cut the sleeve until it extrudes about 15 mm from the

wall.

4. Finish by sealing the sleeve with putty or caulking

compound at the final stage.

:

:

:

For left side piping, piping connection for liquid should be
about 15 mm from this line.

For left side piping, piping connection for gas should be
about 45 mm from this line.

For left side piping, piping connection cable should be
about 800 mm from this line.

When the wall is hollow, please be sure to use the sleeve for tube
ass’y to prevent dangers caused by mice biting the connecting cable.

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• How to pull the piping and drain hose out, in case of the

embedded piping.

• In case of left piping how to insert the connecting cable and

drain hose.

1. The inside and outside connecting cable can be

connected without removing the front grille.

2. Connecting cable between indoor unit and outdoor unit

shall be approved polychloroprene sheathed 3 (C7GK,

C9GK, C12GK) or 5 (A7GK, A9GK, A12GK) × 1.5mm

2

flexible cord, type designation 245 IEC 57 or heavier
cord.

• Ensure the colour of wires of outdoor unit and the

terminal Nos. are the same to the indoor’s respectively.

• Earth lead wire shall be longer than the other lead wires

as shown in the figure for the electrical safety in case of
the slipping out of the cord from the anchorage.

• Secure the cable onto the control board with the holder

(clamper).

• After selecting the best location, start installation according

to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame firmly and

horizontally by bolt nut (ø10 mm).

2. When installing at roof, please consider strong wind and

earthquake. Please fasten the installation stand firmly
with bolt or nails.

Connecting The Piping To Indoor Unit
Please make flare after inserting flare nut (locate at joint portion
of tube assembly) onto the copper pipe. (In case of using long
piping)
Connect the piping

• Align the center of piping and sufficiently tighten the flare nut

with fingers.

• Further tighten the flare nut with torque wrench in specified

torque as stated in the table.

Model

A

B

C

D

C7GK, C9GK, A7GK,
A9GK

474

87

18.5

261

A12GK, C12GK

570

105

18.5

320

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Connecting The Piping To Outdoor Unit
Decide piping length and then cut by using pipe cutter. Remove
burrs from cut edge. Make flare after inserting the flare nut
(locate at valve) onto the copper pipe. Align center of piping to
valves and then tighten with torque wrench to the specified
torque as stated in the table.

1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not

removed, gas leakage may be caused. Turn the piping
end down to avoid the metal powder entering the pipe.

3. Please make flare after inserting the flare nut onto the

copper pipes.

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the
following procedure.

1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.

• Be sure to connect the end of the charging hose with the push pin to the service port.

2. Connect the center hose of the charging set to a vacuum pump.
3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to -

76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not

move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at torque of 18 N.m with a torque wrench.
7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal

wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

• Be sure to check for gas leakage.

Model

Piping size (Torque)

Gas

Liquid

C7GK, C9GK, A7GK, A9GK

3/8” [42 N•m]

1/4” [18 N•m]

C12GK, A12GK

1/2” [55 N•m]

1/4” [18 N•m]