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Installation space
Ensure there is sufficient space to install the unit and to perform maintenance work as and when required. Keep
15 mm or more for clearance between top plate of the indoor unit and the ceiling surface.
Model RAV-
A mm
HM56 type
271 or more
HM80, HM110, HM140 type
334 or more
1000 or more
Obstacle
When taking in
Selection of installation place
Continual 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: 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 intake path.
3. Kitchen
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 with a thickness of 10 mm or more.)
15-EN
<When taking in fresh air>
• When using a flange sold separately to take in fresh air,
place the check port on the flange side.
1000 or more
200
Check port
(□450)
fresh air
Ceiling height
Unit: mm
When the height of the ceiling exceeds the distance of the item Standard / 4-way in below table, the warm air is
difficult to reach the floor.
It is necessary to change the setup value of the high ceiling setting or discharge direction.
▼Height list of ceiling possible to be installed
Model RAV-
Discharge direction
Standard (Factory default)
High ceiling (1)
High ceiling (3)
REQUIREMENT
• When using the air conditioner with 2-way / 3-way discharge system, a strong wind blows directly if the ceiling height
is lower than the standard. Therefore, change the setting switch according to height of the ceiling.
• When high ceiling (1) or (3) is used with 4-way blowing, a draft is easily recognized due to drop of discharge
temperature.
The lighting time of the filter sign (notification of filter cleaning) on the remote controller can be changed according
Refrigerant piping
to installation conditions.
side
When it is difficult to obtain satisfactory heating due to location place of the indoor unit or the structure of the room,
the detection temperature of heating can be raised.
Refer to "8. Applicable controls" in this manual for the setting procedure.
Drain piping side
Discharge direction
As shown in the figure below, air discharge directions can be selected according to the shape of the room and the
location of the indoor unit installation.
Use an Air discharge direction kit (sold separately) to change discharge directions.
This needs to be set with the wired remote controller during installation.
Discharge directions are limited. Follow the Installation Manual supplied with the Air discharge direction kit.
– 8 –
Model RAV-
HM56, HM80 type
HM110, HM140 type
HM56
HM80
4-way 3-way 2-way 4-way 3-way 2-way 4-way 3-way 2-way
2.8
3.2
3.5
3.0
3.3
3.6
3.2
3.5
3.8
3.3
3.5
3.8
3.5
3.8
—
3.6
3.8
—
3 directions
2 directions
Unit: m
Installable ceiling height
Up to 3.8
Up to 4.6
Unit: m
HM110, HM140
Setup of high ceiling
Setup data
3.9
4.2
4.5
0000
4.2
4.4
4.6
0001
4.5
4.6
—
0003
Air discharge direction kit
(Sold separately)
16-EN
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