15
3-3. Fix the Indoor Unit
3-3-1. Horizontal Installation
Depending on the ceiling type:
a) Insert suspension bolts.
or
b) Use existing ceiling supports or construct a suitable support.
Insert
Hole-in-anchor
Hole-in-plug
Concrete
Suspension bolt (M10 or 3/8”)
(field supply)
a) b)
Ceiling support
Ceiling tiles
WARNING
It is important that you use extreme care in supporting the indoor unit inside the ceiling.
Ensure that the ceiling is strong enough to support the weight of the unit. Before
hanging the unit, test the strength of each attached suspension bolt.
(1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts
referring to the dimensional data as shown in the tables and diagrams under Section 3-1.
Tubing must be laid and connected inside the ceiling when suspending the unit. If the
ceiling is already constructed, lay the tubing into position for connection to the unit before
placing the unit inside the ceiling.
(2) Screw in the suspension bolts allowing them to protrude from the ceiling. (Cut the ceiling
material, if necessary.)
(3)
Thread the 3 hexagonal nuts and 2 washers (field supply) onto each of the 4 suspension bolts.
Use 1 nut and 1 washer for the upper part, and 2 nuts and 1 washer for the lower part, so that
the unit will not fall off the suspension lugs.
Nuts and washers
(use for upper and lower)
Suspension lug
Double nuts
Suspension bolt
Notch
Suspension bolt
Double nuts
Hexagonal nut
01_350221_Eng.indb 15 2023/3/17 10:01:05
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