4. PREPARATION BEFORE INSTALLATION
(1) Check the relation of location between the ceiling
opening and the indoor unit hanging bolts.
950 (Decoration panel)
780 (Hanging bolt pitch)
840 (Indoor unit)
860 – 910 (Ceiling opening)
950 (Decoration panel)
860 – 910 (Ceiling opening)
840 (Indoor unit)
710 (Hanging bolt pitch)
Refrigerant
piping
Hanging
bolt (×4)
A
Fig. 4
Ceiling
View as seen from
A
Hanger
(125 - 130)
Fig. 5
CAUTION
Reduce the distance between the unit and ceiling to 35
mm or below in order to maintain an overlapping panel
margin of 20 mm for the opening on the ceiling. If the dis
-
tance exceeds 35 mm, attach a ceiling material to the part
marked
or replace the ceiling.
(Refer to Fig. 6)
Frame
≥
20
≤
35
≤
35
860 – 910
(Ceiling-panel
overlapping
dimension)
Ceiling
material
(Ceiling opening dimension)
≥
20
Fig. 6
(2) Make the ceiling opening required for installation. (in
case of existing ceiling)
•
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 (not
needed in case of wireless remote con troller) and wiring
between the indoor and outdoor units. (Refer to each
section “
6. REFRIGERANT PIP ING WORK, 7. DRAIN
PIPING WORK and 8. ELECTRIC WIRING WORK”)
•
After making the opening, sometimes it is necessary to
reinforce the ceiling framework to keep the level of the
ceiling and prevent vibration of the ceiling.
For details, consult with the builder and interior designer.
(3) Install the hanging bolts.
•
Use M8 or M10 bolts for hanging the indoor unit.
Use hole-in-anchors for the existing bolts and embed-
ded inserts or foundation bolts for new bolts, and fix the
indoor unit firmly to the building so that it may withstand
the mass of the unit.
In addition, adjust clearance (50 - 100 mm) from the ceil-
ing in advance.
<Installation examples>
50 -
100 mm
Foundation bolt
Hanging bolt
Ceiling slab
Long nut or turn-buckle
Ceiling surface
Note) The above shown parts are all field supply.
5. INSTALLATION OF INDOOR UNIT
<<It is easy to attach the optional parts (except for
decoration panel) before installing the indoor unit. Refer
to also the installation manual attached to the optional
parts.>>
For installation, use the attached installation parts and
specified parts.
[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.]
(1) Install the indoor unit temporarily.
•
Fix the hanger to the hanging bolt.
Make sure to securely fix the hanger with the nut and
the washer for hanger (3) from the upper and lower side.
(Refer to Fig. 7)
If the washer clamp (7) is used, the upper side washer
for hanger (3) may be protected from falling off.
(Refer to Fig. 8)
[To fix hanger]
Hanging bolt
Washer for hanger (3)
(accessory)
Hanger
Tighten the nut
(double nut)
Nut
(Field supply)
Fig. 7
5
3P335596-2D English
