35
n
Installation space
Secure the specified space in the figure for installation and servicing.
u
When incorporating flesh-air inlet box
(sold separately)
Provide an inspection opening at the outside-air
intake box side.
n
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 : 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: 450 × 450mm or more) for piping, mainte-
nance, 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 10mm or more thick.)
n
Ceiling height
When the height of the ceiling exceeds the distance of the item Standard/4-way in Table on the next page,
the hot air is difficult to reach the floor.
Therefore, it is necessary to change the setup value of the high ceiling switch or discharge direction.
The high-ceiling setting is also necessary when installing separately sold filters.
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 using the high ceiling (1) or (3) with 4-way discharge system, the draft is apt to be felt due to drop of
the discharge temperature.
• AP0092H Type and AP0122H Type air conditioners cannot be installed on a high ceiling.
u
Height list of ceiling possible to be installed
(Unit: m)
The lighting time of the filter sign (notification of filter cleaning) on the remote controller can be changed
according to installation conditions.
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.
n
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 a shielding plate kit (sold separately) to change discharge directions.
Discharge directions are limited. Follow the Installation Manual supplied with the shielding plate kit.
3
SELECTION OF INSTALLATION PLACE
238
200
1000 or more
Obstacle
15 or more
1000 or more
A
Unit: mm
When incorporating
flesh-air inlet box
Check port
(450 × 450)
Check port
(450 × 450)
3 directions
2 directions
Shielding plate
(sold separately)
Setup of
high ceiling
SET DATA
0000
0001
0003
Model
MMU-
Discharge direction
Standard (At shipment)
High ceiling (1)
High ceiling (3)
AP0092H
to AP0122H
4-way
3-way
2-way
2.7
2.8
3.0
—
—
—
—
—
—
AP0152H
to AP0182H
4-way
3-way
2-way
2.8
3.2
3.5
3.2
3.5
3.8
3.5
3.8
—
AP0242H
to AP0302H
4-way
3-way
2-way
3.0
3.3
3.6
3.3
3.5
3.8
3.6
3.8
—
AP0362H
to AP0562H
4-way
3-way
2-way
3.9
4.2
4.5
4.2
4.4
4.6
4.5
4.6
—
Model MMU-
AP0092H Type to AP0302H Type
AP0362H Type to AP0562H Type
A mm
271 or more
334 or more
