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11.1 Indoor Unit
11.1.1 Selecting the Installation Location
Take into consideration the following contents when creating the blueprint.
ŶIndoor unit installation location
xDo not install the unit in excessive oil fume area such as kitchen, workshop and etc.
xThe location should be strong enough to support the main unit without vibration.
xThere should not be any heat or steam source nearby.
xDrainage should be easy. Avoid locating the drain port close to ditches (domestic wastewater).
xAvoid locations above entrances and exits.
xDo not block the air intake and discharge passages.
xSelect the location that enables the cool and warm air to spread out to the entire room.
xLocate the indoor unit at least 3.28 ft (1 m) or more away from a TV, radio, wireless appliance, antenna cable and
fluorescent light, and 6.56 ft (2 m) or more away from a telephone.
xRecommended installation height for indoor unit shall be at least 8.27 ft (2.5 m) from floor.
11.1.2 To Drill a Hole in the Wall and Install a Sleeve of Piping
1 Insert the piping sleeve to the hole.
2 Fix the bushing to the sleeve.
3 Cut the sleeve until it extrudes about 19/32"
(15 mm) from the wall.
When the wall is hollow, be sure to use the sleeve for tube
assembly to prevent pests from damaging the cables, e.g.
mice biting the connection cable.
4 Finish by sealing the sleeve with putty or
caulking compound at the final stage.
Putty or caulking compound
Sleeve
for tube
assembly Approx.
7/32
"
-
9/32
"
(5 - 7 mm)
Bushing for
tube assembly
Wall
Outdoor
Indoor
ø
2
3/4
"
(ø70 mm)
through hole
19/32"
(15 mm)
11.1.3 Installing the Indoor Unit (Installation Embedded in the Ceiling)
11.1.3.1 Preparation Before Installation
xAlways provide sufficient entry and exit space to allow installation work, inspection and unit replacement.
xWaterproof the rear surface of the ceiling below the unit in consideration of water droplets forming and dropping.
When cooling operation is performed for an extended period under the following conditions, water droplets may form and drop. Attach locally
purchased insulation (foamed polyethylene with a thickness of 7/32" (5 mm) or more) to the outside of the indoor unit before installing into the
ceiling to improve heat insulation.
xLocations with a dew point inside the ceiling of 73.4°F (23°C) or more
xKitchens and other locations that produce large amounts of heat and steam
xLocations where the inside of the ceiling serves as an outside air intake passage
xWhen installing into a ceiling, select the unit position and airflow direction that enable the cool and warm
air to spread out to the whole room.
xDo not place objects that might obstruct the airflow within 3.28 ft (1 m) below the intake grill.
