Mitsubishi Heavy Industries SRRM40HENG-L, Handbook, Page: 858 / 1106

FDC-HKX
856
(4) Cassetteria type (FDR)
(a) Preparation of indoor unit
Before of during the installation of the unit, assemble necessary optional panel, etc. depending on the specific type.
(b) Select places for installation satisfying following conditions and, at the same time, obtain the consent on the
part of your client user.
1) Places where chilled or heated air circulates freely.
When the installation height exceeds 3 m, warmed air stays close to the ceiling. In such cases, suggest your client users to
install air circulators.
2) Places where perfect drainage can be prepared and sufficient drainage.
3) Places free from air disturbances to the suction port and blowout hole of the indoor unit, places where the fire alarm may not
malfunction or short-circuit.
4) Places with the environmental dew-point temperature is lower that 28
°
C and the relative humidity is less than 80%.
( When installing at a place under a high humidity environment, pay sufficient attention the prevention of dewing such as
thermal insulation of the unit prperly.)
(c) Avoid installation and use at those place listed below.
1) Places exposed to oil splashes or steam (e.g. kitchens and machine plants).
Installation and use at such places incur deteriorations in the performance or corrosion with the heat exchanger or damage in
molded synthetic vesin parts.
2) Places where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc) in generated or remains.
Installation and use at such places cause corrosion in the heat exchanger and damage in molded synthetic resin parts.
3) Places adjacent to equipment generating electromagnetic waves or high-frequency waves such as in hospitals.
Generated noise may cause malfunctioning of the controller.
(d) Preparation for installation
1) Selection of suspension pattern
When the unit is hanged from ceiling, select one of following patterns depending on the dimensions of the ceiling.
< Combination with silent panel >
Mark
Models
A
365 mm or more
416 mm or more
FDR22, 28, 45, 56
71, 90 type
FDR112, 140 type
Mark
Models
A
495 mm or more
510 mm or more
FDR22, 28, 45, 56
71, 90 type
FDR112, 140 type
56 ~ 70
A
A
150 ~ 300
< Combination with canvas panel >