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English
Optional accessories
There are two types of remote controllers: wired and wireless.
Select a remote controller according to customer’s request and
install in an appropriate place.
Refer to catalogues and technical literature for selecting a suitable
remote controller.
This indoor unit requires installation of an optional decoration panel.
For the following items, take special care during
construction and check after installation is finished
Tick
when
checked
Is the indoor unit fixed firmly?
The unit may drop, vibrate or make noise.
Is the air tight test finished?
It may result in insufficient cooling or heating.
Is the unit fully insulated?
Condensate water may drip.
Does drainage flow smoothly?
Condensate water may drip.
Does the power supply voltage correspond to that shown on the
name plate?
The unit may malfunction or components may burn out.
Are wiring and piping correct?
The unit may malfunction or components may burn out.
Is the unit safely grounded?
There may be danger of electric shock.
Is the wiring sized according to specifications?
The unit may malfunction or components may burn out.
Is nothing blocking the air outlet or inlet of either the indoor or
outdoor units?
It may result in insufficient cooling or heating.
Are refrigerant piping length and additional refrigerant charge
noted down?
The refrigerant charge in the system might not be clear.
Notes to the installer
Read this manual carefully to ensure correct installation. Be sure to
instruct the customer how to properly operate the system and show
him/her the enclosed operation manual.
Selecting installation site
When the conditions in the ceiling are exceeding 80°F (30°C) and a
relative humidity of 80%, or when fresh air is inducted into the ceiling,
an additional insulation is required (minimum 3/8 in. (10 mm)
thickness, polyethylene foam).
For this unit you can select different air flow directions. It is necessary
to purchase an optional blocking pad kit to discharge the air in 2 or 3
(closed corners) directions.
Install the unit so that air vents, lights, or machines near the unit do not
interfere with the air flow.
≥60 (1500)
≥80 (2000)
≥160 (4000)
(A)
≥60 (1500)
(B)
≥60 (1500)
a
c
b
a
Unit: in. (mm)
a
Indoor unit
b
Lighting
The figure describes a surface mounted light, but a recessed
ceiling light is not restricted.
c
Air fan
A
If the air outlet is closed, space marked (A) should be 8 in.
(200 mm) at least.
B
≥60 in. (≥1500 mm) from any static obstruction
1
Select an installation site where the following conditions are fulfilled
and that meets your customer’s approval.
•
Where optimum air distribution can be ensured.
•
Where nothing blocks air passage.
•
Where condensate water can be properly drained.
•
Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service can be
ensured.
• Where there is no risk of flammable gas leaking.
• The equipment is not intended for use in a potentially explosive
atmosphere.
•
Where piping between indoor and outdoor units is possible within the
allowable limit. (Refer to the installation manual of the outdoor unit.)
•
Keep indoor unit, outdoor unit, transmission wiring and remote
controller wiring at least 40 in. (1 m) away from televisions and
radios. This is to prevent image interference and noise in those
electrical appliances. (Noise may be generated depending on the
conditions under which the electric wave is generated, even if
40 in. (1 m) is kept.)
•
When installing the wireless remote controller kit, the
communication distance between wireless remote controller and
indoor unit might be reduced if there are fluorescent lights who
are electrically started in the room. The indoor unit must be
installed as far as possible away from fluorescent lights.
2
Ceiling height
This indoor unit may be installed on ceilings up to 11-1/2 ft. (3.5 m)
in height. However, it becomes necessary to make field settings
using the remote controller when installing the unit at a height over
8-3/4 ft. (2.7 m).
To avoid accidental touching, it is recommended to install the unit
higher than 8-1/4 ft. (2.5 m).
Refer to “Field setting” on page 8 and to the decoration panel
installation manual.
3
Air flow directions
Select the air flow directions best suited to the room and point of
installation. (For air discharge in 3 directions, it is necessary to
make field settings by means of the remote controller and to close
the air outlet(s). Refer to the installation manual of the optional
blocking pad kit and to “Field setting” on page 8. (See figure 1)
1
Air discharge in 4 directions
2
Air discharge in 3 directions
3
Air discharge in 2 directions
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