English
(4) Open installation holes
(in the case of installation onto the existing ceiling).
•
Open the installation holes on the ceiling of the
installation location, and work on the refrigerant piping,
drain piping, remote controller wiring, and wiring
between the indoor and outdoor units to the piping
connection port and wiring connection port of the indoor
unit (refer to each piping and wiring procedure items).
•
Ceiling framework reinforcement may be required in
order to keep the ceiling horizontal and prevent ceiling
vibration after opening the ceiling holes. For details,
consult your building and upholstery work contractors.
(5) Install the suspension bolts.
•
Use M8 or M10 bolts for hanging the indoor unit.
Use hole-in-anchors for the existing bolts and
embedded 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 (1-15/16 inch (50mm) -
3-15/16 inch (100mm)) from the ceiling in advance.
<Installation examples>
Foundation bolt
Suspension bolt
Indoor
unit
Ceiling slab
Long nut or
turn-buckle
Note) Components shown in the figure above are
all local procurement.
(6) In the case of changing the preset suction to
underside suction, replace the chamber cover and the
suction flange. (Refer to Fig. 5)
1. Remove the suction flange and chamber cover.
2. Replace the suction flange and the chamber cover.
CAUTION
•
Secure a sufficient maintenance space for the drain pan
and electrical components before installing the indoor
unit.
•
Secure a sufficient maintenance space for the filter
chamber, and peripheral components before installing the
indoor unit.
Suction flange
Replacement
Chamber cover
Fig. 5
5. INDOOR UNIT INSTALLATION
Depending on the optional parts, it may be easier to attach
them before installing the indoor unit. Refer to also the
installation manual attached to the optional parts.
As for the parts to be used for installation work, be sure
to use the provided accessories and specified parts
designated by our company.
(1) Install the indoor unit temporarily.
•
Fix the hanger to the suspension bolt.
Make sure to securely fix the hanger with the nut and the
washer for hanger bracket (11) from the upper and lower
side.
(Refer to Fig. 6)
If the washer fixing plate (9) is used, the upper side
washer for hanger bracket (11) may be protected from
falling off.
(Refer to Fig. 7)
[ Fix the hanger ]
Field supply
Tighten
(double nut)
Washer for
hanger bracket (11)
Fig. 6
[ Washer fixing ]
Washer
fixing plate (9)
Insert
Upper nut
Washer for
hanger bracket (11)
Fig. 7
•
Keep the air outlet covered with a protective sheet to prevent
weld spatter and other foreign materials from entering the
indoor unit and damaging the resin drain pan.
(If holes or cracks are generated in the resin drain pan, water
can leak.)
(2) Adjust the height of the unit.
(3) Check the unit is horizontally level. (Refer to Fig. 8)
(4)
Remove the washer fixing plate (9) used for preventing the
washer for hanger bracket (11) from dropping and tighten
the upper side nut.
Hanger
Bottom of
product
Level
Vinyl tube
[Maintaining horizontality]
Feed water into the tube and
set the indoor unit to the water
levels on the left and right.
Fig. 8
English 6
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