Mitsubishi Electric City Multi Série Manuel D'installation page 4

2. Installing the indoor unit
1
D
Ceiling
E
Rafter
F
Beam
G
Roof beam
*B: Suspension bolt pitch (see Fig. 2-2
Fig. 2-4
A
Suspension bolt (Procure locally)
B
Ceiling
C
Nut (Procure locally)
D
Washer (with insulation) (Accessory)
Fig. 2-5
D
Fig. 2-6
Fig. 2-7
A
Unit
B
Grille
C
Pillow
2
H
I
locally)
J
Steel reinforcing rod
B
for details)
(inch)
E
Mounting plate
F
Washer (without insulation) (Accessory)
G
Check using the Installation gauge
A
Main unit
B
Ceiling
C
Gauge (Grille accessory)
D
Ceiling opening dimensions
A
Main unit
B
Ceiling
C
Installation template (Accessory)
2.4. Suspension structure (Give site of suspension
strong structure) (Fig. 2-4)
structors and interior decorators should be consulted for details.
(1) Extent of ceiling removal: The ceiling must be kept completely horizontal and the
ceiling foundation (framework: wooden slats and slat holders) must be reinforced
in order to protect the ceiling from vibration.
(2) Cut and remove the ceiling foundation.
(3) Reinforce the ends of the ceiling foundation where it has been cut and add ceiling
foundation for securing the ends of the ceiling board.
(4) When installing the unit on a slanting ceiling, interlock a pillow between the ceiling
and the grille and set so that the unit is installed horizontally.
1
Wooden structures
as reinforcing members.
2
Ferro-concrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
2.5. Unit suspension procedures (Fig. 2-5)
Suspend the main unit as shown in the diagram.
1. In advance, set the parts onto the suspension bolts in the order of the washers
(with insulation), washers (without insulation) and nuts (double).
(with insulation) and nuts (double) are to be set later.
2. Lift the unit to the proper height of the suspension bolts to insert the mounting
plate between washers and then fasten it securely.
3. When the main unit can not be aligned against the mounting hole on the ceiling,
it is adjustable owing to a slot provided on the mounting plate. (Fig. 2-6)
Damage could result by failing to adhere to this range.
2.6. Confirming the position of main unit and tightening
the suspension bolts (Fig. 2-7)
properly aligned with the opening of the ceiling. Be sure to confirm this, otherwise
condensation may form and drip due to air leakage etc.
with water.
securely to fasten the main unit.
entering the main unit when the grilles are left unattached for a while or when the
ceiling materials are to be lined after installation of the unit is finished.
* As for the details of fitting, refer to the instructions given on the Installation tem-
plate.
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