40
S4179544
5
5
5
5
5
T
3-22.
Partial Flush Mounting
(1)
When the indoor unit is to be partially flush
mounted onto the ceiling, place the full-scale
diagram (supplied) to make holes for the suspen-
sion bolts.
(Fig.3-73)
You must embed the suspension bolts in the ceiling if it
is made of concrete or a similar hard material. Make
sure the ceiling is strong enough to support the indoor
unit.
(2)
If a construction beam (or beams) is to be used to
suspend the indoor unit, firmly secure the sus-
pension bolts to the construction beam(s) and
use the full-scale diagram to reconfirm the bolt
mounting positions. (Fig. 3-74)
(3)
Place insulation (thickness: 10 mm minimum)
around the embedded part of the indoor unit to
prevent dripping from the ceiling. (Fig. 3-75)
(4)
For the rest of the suspension procedure, refer to
steps (1) to (5) of Section 3-21. “Suspending the
Indoor Unit”.
(5)
Adjust the double hexagonal nuts to level the unit.
Then, tighten the second hexagonal nut of each
pair to permanently secure the unit.
In some cases the ceiling may not be consistently
level, leaving gaps between the indoor unit and the
ceiling. This can allow the entrance of humid air into
the room, and thus degrade the performance of the air
conditioner. To prevent this, leave a clearance of 1 cm
between the ceiling and the indoor unit and fill the gap
with an appropriate insulation or filler material.
(Figs. 3-75 and 3-76)
NOTE
NOTE
NOTE
The lower end of the suspension bolt should be within
the indicated adjustment range. (Fig. 3-74)
Fig. 3-73
Fig. 3-74
Fig. 3-75
Fig. 3-76
0089_T_I
Ceiling
Indoor unit
Partially Flush Mounted
0091_T_I
Insulator
Indoor unit
0780_T_I
Adjustment range of
suspension bolt
Suspension bolt
Ceiling
panel
4 cm
1 cm
0781_T_I
Good
Not good