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Air-intake grille
Ceiling panel
Air-intake grille hinge
1
1
3-6. How to Install the Ceiling Panel
3-6-1. Before Installing the Ceiling Panel
Checking the unit position
(1) Check that the ceiling hole is within this range:
33-55/64
×
33-55/64 to 35-53/64
×
35-53/64 in.
(2) Use the full-scale installation diagram (from the
packaging) that was supplied with the unit to
determine the positioning of the unit on the ceiling
surface. If the positions of the ceiling surface and
unit do not match, air leakage, water leakage, flap
operation failure, or other problems may occur.
CAUTION
●
Never place the panel face-down. Either hang
it vertically or place it on top of a projecting
object. Placing it face-down will damage the
surface.
●
Do not touch the flap or apply force to it.
(This may cause flap malfunction.)
A
must be within the range of 15/32 – 43/64 in. (Fig. 3-13)
If not within this range, malfunction or other trouble may occur.
Ceiling side
Main unit
Ceiling opening
dimension
A
Fig. 3-13
Flap
Fig. 3-14
Fig. 3-15
Latch
Screw
Remove the air-intake grille and air filter from the
ceiling panel. (Figs. 3-15, 3-16 and 3-17)
a) Remove the 2 screws on the latch of the air-intake
grille. (Fig. 3-15)
b) Slide the air-intake grille catches in the direction
shown by the arrows
1
to open the grille.
(Fig. 3-16)
c) With the air-intake grille opened, remove the grille
hinge from the ceiling panel by sliding it in the direc-
tion shown by the arrow
2
. (Fig. 3-17)
Removing the corner cover
a) Slide the corner cover to the direction shown
by the arrow
1
to remove the corner cover.
(Fig. 3-18).
2
Fig. 3-17
Corner cover
Ceiling panel
Strap
Push
1
Corner cover
Fig. 3-18
Fig. 3-16