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[ Required installation space [in. (mm)] ]
Figures indicate the minimum required installation space.
Service
Service
space for
space for
electrical
drain pan
components
Secure the service
space for the drain pan and
electrical components.
Fig. 1
Ceiling
Fig. 2
• * Dimension H1 indicates the product height.
• * Secure a downward slope of at least 1/100 specified in
7. DRAIN PIPING WORK and determine dimension H2.
<Failure example>
If there is an obstacle in the airflow path or proper installation
space is not provided, the indoor unit will cause air volume
reduction and take in air blown out of the indoor unit, thus
resulting in performance degradation or turning the thermo-
stat OFF frequently.
CAUTION
• Install the indoor and outdoor units, power supply wiring,
remote controller wiring and transmission wiring at least
3.5 ft. (1 m) away from televisions or radios to prevent im-
age interference or noise.
(Depending on the radio waves, a distance of 3.5 ft. (1 m)
may not be sufficient to eliminate the noise.)
• Install the indoor unit as far as possible from fluorescent
lamps.
If a wireless remote controller kit is installed, the transmis-
sion distance may be shorter in a room where an elec-
tronic lighting type (inverter or rapid start type) fluorescent
lamp is installed.
(2) Use hanging bolts for installation.
Investigate if the installation place can withstand the
weight of the indoor unit and, if necessary, hang the
indoor unit with bolts after it is reinforced by beams etc.
5
4. PREPARATION BEFORE INSTALLATION
(1) Check the relation of location between the ceiling
opening and the indoor unit hanging bolts.
(unit [in. (mm)])
• Provide one of the following service spaces for the
1. Inspection hatches 1 and 2 17-3/4×17-3/4 (450×450)
2. Inspection hatch 1 17-3/4×17-3/4 (450×450) on the
3. Inspection hatch 3 on the bottom of the product and
Floor
Inspection hatch 2*
17-3/4×17-3/4
(450×450)
(For drain pan
removal and
component replacement)
maintenance and inspection of the control box and
drain pump or for other services.
(Fig. 3-1) and a minimum space of 11-13/16 (300) at
the bottom of the product (Fig. 3).
control box side and inspection hatch 2 on the bot-
tom of the product. (Fig. 4, arrow A-1)
on the bottom side of the control box. (Fig. 4, arrow
A-2)
Control box
Ceiling
< In the case of (1)-1 >
Fig. 3
31-1/2 (800)
24-13/16
(630)
(Hanging bolt pitch)
Air outlet
Bottom of
indoor unit
* Inspection hatch 2 is not required
if the bottom space under the product
is accessible for work.
Fig. 3-1
Inspection hatch
Inspection hatch 1
17-3/4×17-3/4
(450×450)
Hanging bolts (×4)
Control box
Air inlet
English
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