Mounting The Indoor Unit; Adjusting The Space Between Indoor Unit And False Ceiling Opening - Hitachi RCI-1.0FSN3 Installation & Maintenance Manual

4-WAY CASSETTE

4.3.3 Mounting the Indoor Unit

(1) Mount the nuts and washers to the
suspension bolts.
Suspension Bolt (Field-Supplied)
Nut (Field-Supplied)
*Washer with Insulation (Accessory)
Suspension Bracket (Attached Indoor Unit)
*Washer (Accessory)
Nut (Field-Supplied)
Surface of Ceiling
Fig. 4.6 Mounting Nuts and Washers
* Make sure that the washers (accessories)
must be used for suspension bolt mounting
on suspension bracket for tightening
securely. The washer with insulation
downward to facilitate the hanging work.
(2) Lift the indoor unit by hoist, and do not apply
any force to the drain pan (the air outlet
portions and the drain pan portion).
(3) Insert the suspension bolts to the notches of
the suspension brackets to hook the indoor
unit, and check that the washers are as the
stoppers at the rising part of the suspension
bracket.
* The piping and wiring work inside the
ceiling are required after hooking-up
the indoor unit. Thus, determine the
location for installation. Especially if the
false ceiling has already been installed,
complete all piping and wiring work until
the piping and wiring connecting position
inside the ceiling before hooking the indoor
unit.
(4) Secure the indoor unit using the nuts,
washers.
Suspension Bolt
Suspension
Bracket
Drain Pan
Fig. 4.7 Mounting the Indoor Unit
12
2-42
4.3.4 Adjusting the Space between Indoor Unit
and False Ceiling Opening
(mm)
Check the level of the drain pan using a water
level to avoid incorrect operation of the drain
discharge mechanism in the indoor unit.
Tighten the nuts of the suspension brackets
after the adjustment is completed. Apply
LOCK-TIGHT paint* to the bolts and nuts in
order to prevent them from loosening. If not
done, abnormal noises or sounds may occur
and the indoor unit may fall down.
LOCK-TIGHT paint*: Paint the lock bolts and nuts. Adjust
the indoor unit to the correct position while checking with the
checking scales (factory-supplied).
(1) The pattern board for the installation and the
checking scale are printed on the packing.
Cut off the checking scale for dimension of
opening from packing.
Checking Scale for
Dimension of Opening
Packing
(Corrugated Board)
(2) Adjust the position of the indoor unit, as
shown below by using the checking scale.
(a) Adjust the position between the indoor
unit and the opening.
Surface of Flange
10 to 35 10 to 35
Indoor Unit
(Viewed from Bottom Side)
Pattern Board
for Installation
(mm)
P5414946-rev.1
TC-12001