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AIR CONDITIONER
OPTIONAL PARTS
PART No. 9378730137
CASSETTE GRILLE
INSTALLATION MANUAL
For authorized service personnel only.
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1. SAFETY PRECAUTIONS
Indicates a potentially or imminently
WARNING
For the air conditioner to operate satisfactorily, install as outlined
in this manual.
Do not turn on the power until all installation work is complete.
Never touch electrical components immediately after the power
supply has been turned off. Electric shock may occur. After
turning off the power, always wait 5 minutes or more before
touching electrical components.
CAUTION
The louver angle cannot be changed if the power is not on.
(If moved by hand, it may be damaged.)
Please refer to the installation manual attached to the indoor
unit during installation.
Hand this manual to the customer to keep for future use, such
as for maintenance.
Do not suspend very heavy weights from the intake grille.
hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation
that may result in minor or moderate injury
or damage to property.
2. ACCESSORIES
• The following installation parts are furnished. Use them as
required.
Name and shape Q’ty Application
Installation Manual
(This manual)
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3. INSTALLATION PROCEDURE
3.1. Removing the Intake grille
(1) Push the intake grille push-buttons (2 places).
(2) Open and remove the intake grille.
(3) Remove the corner panel (4 places).
(4) Insert the hexagon screw and attach the washer so that it does not fall.
Washer
(Accessory)
Corner panel
Hexagon screw
(Accessory)
3.2. Installing the panel to indoor unit
When installing the main indoor unit, refer to the instructions on the
installation manual of the indoor unit.
(1) Install the decoration panel to the indoor unit.
• Align the stamped marks on the decoration panel against the pipe and
the drain of the indoor unit.
“PIPE”
Hexagon Screw
Washer
Tapping screw
Strap
For mounting decoration panel
4
For mounting decoration panel
4
For installing grille holding wire
2
For installing corner panel
4
“DRAIN”
“PIPING SIDE”
“DRAIN SIDE”
• Attach the decoration panel temporarily at 2 places with metal fi ttings.
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CAUTION
• Use only the supplied screws to install the decoration panel.
• Install so that there is no gap between the decoration panel and
the main indoor unit.
If there is a gap, an error will occur as shown in the diagram below.
•
Condensation
Air leakage
Dirty ceiling
Condensation, dew drops
• Tighten the 4 hexagon screws.
Ensure that there
is no gap between
the hook and the
decoration panel
(4 places)
No
Gap
Hexagon
screws (Accessory)
When there is a gap between the ceiling
and the decoration panel even when the
screw is tightened, readjust the height of the
main indoor unit.
As long as it does not affect the levelness
of the main indoor unit and the drain piping,
you may adjust the height of the main
indoor unit from the hole at the corner of the
decoration panel, with the decoration panel
still attached to the main indoor unit.
• Tighten the screw until the seal material between the decoration panel
and the main indoor unit is compressed to a thickness of 3/16 to 1/4 in
(5 to 7 mm).
(3) Open the control box cover by loosening the screws.
Control Box
(4) Connect the cassette grille connector as shown in the following fi gure.
Type A
Type B
(5) Close the control box cover and retighten the screws.
Cassette grille connector (CN37)
Cassette grille connector (CN155)
Screws
3.3. Attaching the Intake grille
(1) Tighten the 2 grille holding wires.
Indoor unit
(5 to 7 mm)
Ceiling
Attach the corner
panel fi rmly in
5 places.
Sealant
Decoration panel
(2) Install the corner panels.
• As shown in the following fi gure, be sure to install the strap to prevent
the corner panel from falling down.
Hook
Strap (Accessory)
Hook
3/16 to 1/4 in
No gap between ceiling and decoration
panel around entire periphery
Corner
panel
CAUTION
Be careful so that no wires or straps are caught between the
panels.
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Tapping screws
(Accessory)
Intake grille
(2) Close the intake grille.
CAUTION
Install the grill holding wire to the decoration panel. If it falls, it may
cause injuries.
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