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Opening a ceiling and
installation of hanging bolts

• Consider the piping / wiring after the unit is hung to

determine the location of the indoor unit installation
and orientation.

• After the location of the indoor unit installation has

been determined, open the ceiling and install
hanging bolts.

• The dimensions of the ceiling opening and hanging

bolt pitches are given in the outline drawing and the
attached installation pattern.

• When a ceiling already exists, lay the drain pipe,

refrigerant pipe, control wires, and remote controller
wires to their connection locations before hanging
the indoor unit.

Procure hanging bolts and nuts for installing the indoor
unit (these are not supplied).

Using the installation pattern (accessory)

The installation pattern is provided inside the
packaging cap.

<For existing ceiling>

Use the installation pattern positioning a ceiling
opening and hanging bolts.

<For new ceiling>

Use the installation pattern to position the ceiling
opening when a ceiling is hanged.
• After the hanging bolts have been installed, install

the indoor unit.

• After loosening the panel fixing screws of the indoor

unit, hook them on the four holes in the installation
pattern.

• When hanging a ceiling, open the ceiling along the

outside dimensions of the installation pattern.

Treatment of ceiling

The ceiling differs according to structure of building.
For details, consult your constructor or interior finish
contractor.
In the process after the ceiling board has been
removed, it is important to reinforce ceiling foundation
(frame) and to keep horizontal level of installed ceiling
correctly in order to prevent vibration of ceiling board.
1. Cut and remove the ceiling foundation.
2. Reinforce the cut surface of ceiling foundation, and

add ceiling foundation for fixing the end of ceiling
board.

Installation of hanging bolt

Use M10 hanging bolts (4 pcs, locally procured).
Matching to the existing structure, set pitch according
to size in the unit external view as shown below.

Hanging bolt

M10 or W3/8

4 pieces

Nut

M10 or W3/8

12 pieces

Indoor unit

Panel fixing

screw

Installation pattern

(Accessory)

Installation pattern

attachment hole

New concrete slab

Install the bolts with insert brackets or anchor bolts.

Steel flame structure

Use existing angles or install new support angles.

Existing concrete slab

Use a hole-in anchors, hole-in plugs, or a hole-in bolts.

Rubber

Anchor bolt

(Blade type

bracket)

(Slide type

bracket)

(Pipe hanging

anchor bolt)

Hanging bolt

Hanging bolt Support angle

Installation of ceiling opening and
hanging bolt

• Attach a nut (locally procured) and the washer

(supplied) to each hanging bolt.

• Insert a washer on both sides of the T groove of the

hanging bracket of the indoor unit, and hang the
indoor unit.

• Check that the four sides of the indoor unit are level

using a level gauge (levelness: 5 mm or less).

• Detach the installation gauge (accessory) from the

installation pattern.

• Using the installation gauge, check and adjust the

positional relation between the indoor unit and the
ceiling opening (1) (2.5 - 9.5 mm: 4 sides) and the
hanging-up height (2) (23 - 28 mm: 4 corners).
(How to use the installation gauge is printed on the
gauge.)

For the grid ceiling, incline the unit and then mount the
unit from the electrical control box side as shown in the
figure below.

CAUTION

Before installation of the indoor unit, remove the tape
that holds the fan and bell mouth. Running the unit
without removing the tape may damage the fan motor.

Hanging bolt

Level

Hanging bracket

Washer (Accessory)
To prevent the bolt

from falling off (for

safety), be sure to set

it just under the

hanging bracket as

shown in the figure.

Eccentric washer

(Accessory)

Nut M10 or