– 30 –
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.
unit: mm
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 take-in path.
3. Kitchen
Advice
• Set a service check opening panel at right side of the unit (size: 450 × 450 mm or more) for piping, maintenance,
and servicing.
• If installing a unit at such place, put insulating material (such as glass wool) 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 10 mm or more thick.)
1000 or more
15
o
r
mo
re
100
0
or
mo
re
283
or
mo
re
283
or
mo
re
15
o
r
mo
re
1000 or more
Obstacle
Ceiling height
Unit : m
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
Unit : m
REQUIREMENT
When high ceiling (2) 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 control 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.
Refer to “8. Applicable Controls” in this manual for the setting procedure.
Model MMU-
Installable ceiling height
AP007 to AP012 type
Up to 2.7
AP015 to AP018 type
Up to 3.5
Indoor unit Capacity type
AP007 to AP012 type
AP015 type
AP018 type
Setup of high ceiling
Discharge direction
4-way
4-way
4-way
Setup data
Standard (At shipment)
2.7
2.9
3.2
0000
High ceiling (2)
—
3.2
3.4
0002
High ceiling (3)
—
3.5
3.5
0003
59-EN
60-EN
+00EH99886301_01EN.book Page 30 Wednesday, February 1, 2012 12:05 PM
