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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 of the installation

plate. The meeting point of the extended line is the
centre of the hole. Another method is by putting
measuring 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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(This can be used for left rear piping and left bottom piping
also.)

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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 (C7HKD,
C9HKD, C12HKD) or 5 (A7HKD, A9HKD, A12HKD)

x 1.5 mm

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).

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• 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.

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.

Model

A

B

C

D

C7HKD, C9HKD, C12HKD, 

A7HKD, A9HKD

474 mm

87 mm

18.5 mm 261 mm

A12HKD

570 mm 105 mm 18.5 mm 320 mm

Model

Piping size (Torque)

Gas

Liquid

C7HKD, C9HKD, A7HKD, A9HKD

3/8” [42 N

O

m]

1/4” [18 N

O

m)

C12HKD, A12HKD

1/2” [55 N

O

m]

1/4” [18 N

O

m)

Do not over tighten, over tightening cause gas leakage.