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4-way Air Discharge Cassette Type
Installation space
Secure the specified space in the figure for installation and servicing.
SP180, SP240 Type
SP300, SP360, SP420 Type
39.4" (1000) or more
1000 (39.4) or more
Obstacle
Obstacle
Selection of installation place
In case of continued operation of the indoor unit under high-humidity conditions as described below, dew may
condense and water may drop.
Especially, high-humidity atmosphere (dew point temperature : 73.4°F (23°C) or more) may generate dew inside
the ceiling.
1. Unit is installed inside the ceiling with slated roof.
2. Unit is installed at a location using inside of the ceiling as fresh air take-in path.
3. Kitchen
Advice
• Set a service check opening panel at right side of the unit (size: 17.7" × 17.7" (450 × 450mm) or more) for piping,
maintenance, and servicing.
• If installing a unit at such place, put insulating material (glass wool, etc.) additionally on all the positions of the
indoor unit which come to contact with high-humidity atmosphere.
REQUIREMENT
When the humidity inside the ceiling seems to be higher than 80%, attach a heat insulator to the side (top)
surface of the indoor unit. (Use a heat insulator that is 0.4" (10 mm) or more thick.)
Model RAV-
A in (mm)
10.7" (271) or more
13.1" (334) or more
7.9" (200)
200 (7.9)
Check port
Check port
450×450
17.7" x 17.7"
(17.7×17.7)
(450 x 450)
Check port
Check port
17.7" x 17.7"
450×450
(450 x 450)
(17.7×17.7)
Check port must be located on the
Check port must be located on
Fresh air inlet box side, if it is installed.
the Fresh air inlet box side,
if it is installed
– 6 –
Installation Manual
unit : in (mm)
EN
6-EN
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