1310025 User Manual

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(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

xtheindoorunitrmly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.

Foundation bolt

Suspension bolt

Indoor

unit

Ceiling slab

Long nut or

turn-buckle

Note)Componentsshowninthegureaboveare

all local procurement.

(6) In the case of changing the preset suction to

underside suction, replace the chamber cover and the

suctionange.(RefertoFig.5)

1.Removethesuctionangeandchambercover.

2.Replacethesuctionangeandthechambercover.

CAUTION

• Secureasufcientmaintenancespaceforthedrainpan

and electrical components before installing the indoor

unit.

• Secureasufcientmaintenancespaceforthelter

chamber, and peripheral components before installing the

indoor unit.

Suctionange

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speciedparts

designated by our company.

(1) Install the indoor unit temporarily.

• Fix the hanger to the suspension bolt.

Makesuretosecurelyx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xing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xing]

Washer

xing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xing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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User Manual - Page 7