Daikin FCQ18AAVJU - Preparation before Installation; Installation of Indoor Unit

4
English
3. PREPARATION BEFORE INSTALLATION
(1) Check the relation of location between the ceiling
opening and the indoor unit suspension bolts.
1 Decoration panel
4 Suspension bolt pitch
3 Indoor unit
2 Ceiling opening
1 Decoration panel
2 Ceiling opening
3 Indoor unit
5 Suspension bolt pitch
Refrigerant
piping
Suspension
bolt (×4)
A
Fig. 4
[unit: in. (mm)]
1 37-3/8 (950)
2 33-7/8 – 35-7/8 (860 – 910)
3 33-1/16 (840)
4 30-3/4 (780)
5 28 (710)
Ceiling
A arrow view
Hanger bracket
Fig. 5
Decoration Panel BYCQ54EEFU BYCQ54EEGFU
in. (mm)
4-15/16 – 5-1/8
(125 – 130)
8-1/16 – 8-1/4
(205 – 210)
NOTE
If the indoor unit is not positioned at the correct height, there
will be a gap between it and the decoration panel that could
result in water leakage or abnormal noise.
CAUTION
Reduce the distance between the unit and ceiling to
1-3/8 in. (35 mm) or below in order to maintain an over-
lapping panel margin 13/16in. (20 mm) for the opening
on the ceiling. If the distance exceeds 1-3/8in. (35mm),
attach ceiling material to the part marked
or replace
the ceiling. (Refer to Fig. 6)
Frame
≤1-3/8 (35) ≤1-3/8 (35)
33-7/8 to 35-7/8 (860 – 910)
(Ceiling-panel
overlapping
dimension)
Ceiling
material
(Ceiling-opening dimension)
≥
13/16
(20)
≥13/16
(20)
[unit: in. (mm)]
Fig. 6
(2) Make the ceiling opening required for installation.
• Use the installation pattern paper (5) matched to the
ceiling opening dimension.
• Make the ceiling opening required for installation at the
installation location and carry out refrigerant/drain pip-
ing, power supply wiring, remote controller wiring and
transmission wiring. (Refer to each section 5. REFRIG-
ERANT PIP ING WORK, 6. DRAIN PIPING WORK
and 7. ELECTRIC WIRING WORK)
• After making the opening, it may be necessary to rein-
force the ceiling framework to maintain a level ceiling
and prevent it from vibrating.
For details, consult with the builder and interior de-
signer.
(3) Install the suspension bolts.
(Use a M8-M10 sized bolt or equivalent.)
• Use hole-in-anchors for the existing bolts and embed-
ded inserts or foundation bolts for new bolts, and x the
indoor unit rmly to the building so that it may withstand
the weight of the unit.
In addition, adjust clearance (2 – 4 in. (50 – 100 mm))
from the ceiling in advance.
<Installation examples>
2 – 4 in.
(50 – 100 mm)
Foundation bolt
Suspension bolt
Ceiling slab
Long nut or turn-buckle
Ceiling surface
Note) The above shown parts are all field supply.
4. INSTALLATION OF INDOOR UNIT
<<It is easy to attach the optional accessories (except for
decoration panel) before installing the indoor unit. Refer
to also the installation manual attached to the optional
accessories.>>
For installation, use the attached accessories and speci-
ed accessories.
[Install the indoor unit in the order of steps (1), (2), (3), (4), (5)
and (6) in case of a newly built ceiling, or in the order of steps
(1), (3), (4) and (5) in case of an existing ceiling.]
01_EN_3P693452-2.indd 4 2022/08/09 16:00:11