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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
xtheindoorunitrmlytothebuildingsothatitmay
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)Componentsshowninthegureaboveare
all local procurement.
(6) In the case of changing the preset suction to
underside suction, replace the chamber cover and the
suctionange.(RefertoFig.5)
1.Removethesuctionangeandchambercover.
2.Replacethesuctionangeandthechambercover.
CAUTION
• Secureasufcientmaintenancespaceforthedrainpan
and electrical components before installing the indoor
unit.
• Secureasufcientmaintenancespaceforthelter
chamber, and peripheral components before installing the
indoor unit.
Suctionange
Replacement
Chambercover
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
tousetheprovidedaccessoriesandspeciedparts
designated by our company.
(1) Install the indoor unit temporarily.
• Fix the hanger to the suspension bolt.
Makesuretosecurelyxthehangerwiththenutandthe
washer for hanger bracket (11) from the upper and lower
side. (Refer to Fig. 6)
Ifthewasherxingplate(9)isused,theupperside
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
[Washerxing]
Washer
xingplate(9)
Insert
Uppernut
Washer for
hangerbracket(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) Removethewasherxingplate(9)usedforpreventingthe
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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