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A
Ceiling tiles
Ceiling suppor
t
Fig. 3-34
Fig. 3-33
Fig. 3-32
3-9. Placing the Unit Inside the Ceiling
(1) Use the supplied M5 or 3/16" screws (4) to attach
the full-size installation diagram to the indoor unit
suspension lugs, in order to obtain the ceiling
opening dimensions for suspending the unit.
Caution: Piping and wiring work must be performed
inside the ceiling after the unit is suspended.
Therefore if the ceiling is already installed, the
wiring and piping work should be completed
up to the connection points prior to
suspending the unit.
(2) Attach the special washers (supplied) and nuts (field
supply) to the suspension bolts (4 locations).
CAUTION
Be sure to use a level gauge
and confirm that the unit is
level. If it is not level, water
leakage may occur.
Suspension
lug
25/32 – 1 in.
over 19/32 in.
Full-scale
installation diagram
3-5/32
For fresh air intake
(ø3-15/16 hole)
6-11/16
A
Fig. 3-35
For fresh air intake
(ø3-15/16 hole)
6-11/16
A
8-1/16
Unit: in.
CAUTION
● Use M10 or 3/8" nuts.
● The length of the suspension bolts must be such that
there is a space of at least 19/32 in. below the bottom
of the suspension lugs, as shown in Fig. 3-33. If the
length of the suspension bolts is too long, the bolts
may interfere with the ceiling panel and louver motor,
preventing their installation.
(3) Thread the 3 hexagonal nuts and 2 washers (field
supply) onto each of the 4 suspension bolts as
shown in Fig. 3-36. Use 1 nut and 1 washer for the
upper side, and 2 nuts and 1 washer for the lower
side, so that the unit will not fall off the suspension
lugs.
(4) Lift up the indoor unit and fit the suspension bolts
into the notches in the suspension lugs.
(5) Adjust so that the distance between the bottom of
the indoor unit suspension lugs and the bottom of
the ceiling panel is 25/32 – 1 in. Then tighten the
nuts above and below each suspension lug. The
full-size installation diagram can be used to help
adjust the height of the indoor unit.
Unit: in.
Fig. 3-36
Suspension bolt
Nuts and washers
(Used above and below.)
Double nuts
25/32 – 1 in.
over 19/32 in.
Suspension lug
Notch
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 32