Specifications

172
(3) Ceiling recessed single air supply port type (FDTQ)
Models FDTQJ22HKXE3, 28HKXE3, 36HKXE3
(a) Avoid the following locations for installation and uses
1) Locations where oil splashes and moisture are abundant (e.g., kitchens, mechanical workshops).
These locations may result in corrosion and lower performance of the heat exchanger and cause damage to plastic parts.
2) Locations with corrosive gases (such as sulfurous acid gas), flammable gases (such as thinners, gasoline) and areas where
there are possibilities of gas accumulation. These locations can result in corrosion of the heat exchanger and damage
plastic parts. Also, the flammable gas could cause a fire.
3) Locations near medical equipment radiating electromagnetic waves in hospitals or other facilities, and around appliances
emitting high frequencies. The electromagnetic noise may cause the controller to malfunction.
4) Locations exposed to sea breezes (seaside areas). Sea breezes may cause corrosion of the outer frame and the heat ex-
changer.
(b) Installation space for the indoor unit
1) With the customer’s consent, select a suitable location according to the following conditions.
● Where cool air or hot air can easily pass through.
If the height of the location exceeds 3 m, hot air will gather below the ceiling. Suggest to the customer to also install a
circulation fan.
● Where wiring and plumbing to outdoor areas may easily be conducted.
● Where water can be completely drained. A sloping location for drainage.
● Where there is no wind disturbance to the suction inlet and blowing outlet, the fire alarm will not be set off erroneously,
and no short circuits occur.
● Where there is no direct sunlight.
● Where the ambient dew point temperature is below 28°C and the relative humidity is below 80%.
The unit has been tested according to JIS dew point conditions and has been confirmed to operate without any
problems. However, if the unit is operated in an environment with a humidity higher than the above limit, conden-
sation may occur. Accordingly, all pipes and drain pipes should be further covered with insulation materials 10 - 20
mm thick.
2) Consider the supporting strength of the location. If the strength is not sufficient to sustain the unit weight, use reinforcing
materials.
)
(
More than
100
More than 1000
Obstruction
Installation space
More than
100
More than
100
More than
1500
1
Note (1) 1 shows the case of direct blow.
Unit : mm