Mitsubishi Heavy Industries FDC112KXEN6 Technical Manual page 223

(iii) Moving and installing the unit
Moving
Move the packed box as close to the installation area as possible.
If it must be unpacked, wrap the unit with a nylon sling or apply a
support panel and lift it with a rope to avoid damage to the unit.
Installation
[Hanging]
Hang the unit up.
M10 nut
Unit
If the measurements between the unit and the ceiling holedo not match
upon installation, it may be adjusted with the long holed installation tool.
(iv) Duct work
Rear-intake type with duct
Duct
Unit
(local procurement)
Ceiling
Air outlet
(local procurement)
Soffit
Inspection port
(local procurement)
(350 × 1300 mm)
Air intake
(local procurement)
(with air filters)
1) This unit is designed for installation in a soffit. It is not designed to inhale fresh air directly.
2) In the case of an underside-intake ceiling-return type installation, remove the bottom plate of the unit on the fan side to
make it an underside intake type.
The rear intake should be used together.
3) The air conditioning unit main body is not equipped with air filters. Incorporate air filters in an air intake grille, which will
facilitate the cleaning of air filters.
4) In the case of a rear-intake type with duct and a rear-intake ceiling-return type installation, be sure to provide a 350 mm ×
1300 mm inspection opening right beneath the unit's fan side bottom plate to permit servicing of the unit as illustrated in
installation geometries.
In the case of an underside-intake type with duct and underside-intake ceiling-return thpe, provide an intake opening right
beneath the unit's fan side bottom plate so that it will serve as an inspection opening as well.
Please also see to its dimensions so that the intake opening will be made to 350 mm × 1300 mm.
5) Take care to install a duct horizontally in connecting the unit with a diffuser.
6) When a canvas duct is used for either intake or outlet duct, install it with care so that it may not get flattened.
7) Select a desirable diffuser position and diffuser form to ensure the distribution of winds throughout the room and use a
diffuser employing a strusture that provides the capability to regulate winds.
8) Install the air conditioning unit main body via vibration-isolating rubbers to prevent vibrations from propagating directly
from the air conditloning unit main body to the ceiling and slab.
9) Secure at least 0.15m
10) Never fail to heat-insulate the ducts to prevent condensation on their surfaces.
Hanging bolt
Washer for M10
Spring washer for M10
Rear-intake
ceiling-return type
Hanging bolt
(local procurement)
Underside-intake
ceiling-return type
Duct
(local procurement)
Slab
Please refer to Notice 4.
Underside-intake type
with duct
Please refer to Notice 4.
for the opening of an air intake.
2
-
Adjustment for horizontality
Either use a level vial, or adjust the level according to the
method below.
Adjust so the bottom side of the unit will be leveled
with the water surface as illustrated below.
Pipe side
Pour water
Water
surface
0~5 mm
If the unit is not leveled, it may cause malfunctions or
inoperation of the float switch
Inspection port
(local procurement)
(350 × 1300 mm)
Air outlet
219
-
Vinyl hose
Let the pipe side be slightly sloped.
Air intake
Remove this bottom
plate.
You can have access
to electrical parts and
the fan motor for
servicing.