-
195
-
(e) Ceiling cassette-1 way compact type (FDTQ)
(i) 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.
(ii) 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 air return and air suplly, the fire alarm will not be set off erroneously, and no
air short circuits occur.
● Where there is no direct sunlight.
● If the humidity above the ceiling exceeds 80% or the condensation temperature above the ceiling exceeds 28ºC, affix
polyurethane foam (with a thickness to 10 or greater) above the insulation in the ceiling panels.
Carry out tests of the main unit under the above conditions and confirm that there is no failure. However, if the
environment where the unit is installed exceeds the above conditions and the unit is operated in high humidity
conditions, there is danger of condensate dripping down. If there is a possibility that the unit will be used under
such conditions, dress 10 to 20 mm of insulation material on the main unit, piping and drain pipes.
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
()
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