Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 846

FDC-HKX
(2) 2-way outlet ceiling recessed type (FDTW)
(a) Selection of installation location
1) This unit is a ceiling surface direct return air and direct supply air type.
Install the unit a place the allows air to reach every part of the room, in accordance with the shape and heigh of the room.
• Installation space
2) This unit permits connecting a branch duct (
disribution may be improved to the shape of the room. (For the connecting port of the duct, refer to the exterior dimension
on page 760.)
3) Cold air throw
Models
FDTW28, 45, 56 type
Item
Standerd
UHi
Note (1) The cold air throw is the same in 2 directions.
Conditions:
1.Unit height: 3.0 m above the floor
2.Fan speed: Hi
3.Location: Freee space without obstacle
4.The throw is as the per the table above.
5.Air velocity at the throw: 0.3(m/s)
4) Places where chilied or heated air circulates freely. When the installation heiht exceeds 3.5m, warmed air stays close to the
ceiling. In such cases, suggest your client users to install air circulators.
5) Places where perfect drainage can be prepared and sufficient drainage gradient is available.
6) Places free from air disturbances to the return air port and supply hole of the indoor unit, places where the fire alarm may
not malfunction to short circuit.
7) Places with the environmental dew-point temperature is lower than 28°C and the relative humidity is less than 80%. (When
installing at a place under a high humidity environment, pay suffcient attention to prevention of dewing such as thermally
insulating the unit properly.)
844
100 100
or or
more more
200 mm) according to the method shown in the figure below so that air
B
FDTW71, 90 type
4.0 4.5
4.5 5.0
Unit : mm
1500 1500
or or
more more
200 mm
Air interruption
FDTW112 type
4.7
5.2
Unit : m
FDTW140 type
5.0
5.5