Panasonic WH-ADF0309J3E5CM Service Manual page 102

12.1.3.3 Fix the Indoor Unit
12.1.3.3.1 Horizontal Installation
Depending on the ceiling type:
a) Insert suspension bolts
or
b) Use existing ceiling supports or construct a
suitable support.
Hole-in-anchor
Concrete
Hole-in-plug
Suspension bolt (M10 or 3/8")
(field supply)
a)
b)
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 the section 12.1.3.1.
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.)
Insert
Ceiling tiles
Ceiling support
(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 bolt
Hexagonal nut

This shows an example of installation.
Air outlet duct
Suspension bolt
Air outlet grille
102
Suspension bolt
Suspension lug
Double nuts
Notch
Double nuts
Bolt anchor
Indoor unit
Ceiling material