b) Slide the air-intake grille catches in the direction shown
by the arrows 1 to open the grille. (Fig. 9-19)
Air-intake grille
Air-intake grille hinge
c) With the air-intake grille opened, remove the grille hinge
from the ceiling panel by sliding it in the direction shown
by the arrow 2. (Fig. 9-20)
2
(2) Removing the corner cover.
a) Remove the screws on the corner and slide the latches
in the direction of the arrow 1 to disconnect the hinges
(3 locations). Then, remove the air-intake grille in the
direction of the arrow 2. (Fig. 9-21)
Corner cover
9-9. Installing the Ceiling Panel
The power must be turned ON in order to change the flap
angle. (Do not attempt to move the flap by hand. Doing so may
damage the flap.)
(1) Hang the temporary latches on the inside of the ceiling
panel to the receptacle on the unit to temporarily attach the
ceiling panel in place. (Fig. 9-22)
● The ceiling panel must be installed in the correct direction
relative to the unit. Align the REF. PIPE and DRAIN marks
on the ceiling panel corner with the correct positions on the
unit.
● To remove the ceiling panel, support the ceiling panel while
pressing the temporary latches toward the outside.
(Fig. 9-22)
Temporary
latch
(2) Align the panel installation holes and the unit screw holes.
Ceiling panel
1
1
Fig. 9-19
Fig. 9-20
Corner cover
1
Push
Ceiling panel
Fig. 9-21
Temporary latches
Fig. 9-22
(3) Tighten the supplied washer head screws at the 4 panel
installation locations so that the panel is attached tightly to
the unit. (Fig. 9-23)
Ceiling panel
Washer head screws
(4) Check that the panel is attached tightly to the ceiling.
● At this time, make sure that there are no gaps between the
unit and the ceiling panel, or between the ceiling panel and
the ceiling surface. (Fig. 9-24)
Ceiling surface
2
● If there is a gap between the panel and the ceiling, leave
the ceiling panel attached and make fine adjustments to the
1
installation height of the unit to eliminate the gap with the
ceiling. (Fig. 9-25)
CAUTION
● If the screws are not sufficiently
tightened, trouble such as that
shown in the figure below may
occur. Be sure to tighten the
screws securely.
Air leakage
Air leakage from
ceiling surface
Staining
Condensation, water leakage
50
Refrigerant tubing joint
Drainage check
REF. mark
DRAIN mark
Panel installation hole
(4 locations)
Fig. 9-23
Do not allow
gaps
Main unit
Ceiling panel
Fig. 9-24
● If a gap remains between
the ceiling surface and the
ceiling panel even after the
screws are tightened, adjust
the height of the unit again.
Adjust so that there are no gaps.
Fig. 9-25