Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 626

FDU-H
All Wiring of this installation must comply with NATIONAL, STATE AND LOCAL REGULATION. These
instructions do not cover all variations for every kind of installation circumstance. Should further information be desired or
should particular problems occur, the matter should be referred to Mitsubishi Heavy Industries, Ltd.
distributor.
BE SURE TO READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION. FAILURE TO
FOLLOW THESE INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH. EQUIPMENT MALFUNCTION
AND/OR PROPERTY DAMAGE.
15.5.1 Installation of indoor unit
(1) Selection of installation location
(a) Install the unit at a place as shown below and which meets the conditions as shown by the following table.
Front view
All Series
Slab
Ceiling
Air conditions, limitation of air volume
Item Air volume (m
Model Rating Lower limit
FDU308 20/24 15/18
FDU408
27/32 20/24
FDU508 34/40 26/30
FDU808 51 38
FDU1008 68 51
(b) Places where perfect drainage can be prepared and sufficient drainage gradient is available.
(c) Places free from air disturbances to the air inlet and outlet of the indoor unit.
(d) 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 sufficient attention to prevention of dewing such as thermally
insulating the unit properly.)
(e) *Do not place where the unit is exposed to oil splashes or steam (e.g. kitchens and machine plants).
(Installation and use at such places will cause the performance drop, corrosion in the heat exchanger and damage in molded synthetic
resin parts.)
(f) Do not place where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc.) is generated or remains.
Installation and use at such places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts.
(g) Do not place adjacent to equipment generating electromagnetic waves or high-frequency waves such as in hospitals, Generated noise
may cause malfunctioning of the controller.
(2) Installation
<Delivery>
When delivering the package, move the
package to the installation as close as
possible.
When it is unpacked and then moved to
the installation place, sufficient care
must be taken not to damage the unit
during transfer.
(Packing hardware)
Four pieces of packing hardware are
used.
Discard them after unpacking.
Packing hardware (4 pcs.)
Wood base
<Adjustment level>
624
Service
Top view
space
When the conditions as shown at
Min. 100 Min. 900 Inspection
left cannot be met, following
hole
Installation space
(660 × 600)
alternative solution may be taken.
Blowout
Intake
50Hz/60Hz
3
/min) Indoor unit suction air temperature
Upper limit Cooling
Upper limit 27°CWB at ambient
25/26
temperature 35°C
34/35
Lower limit
43/44
15.5°CWB
at ambient temperature 10°C
65
87
<Securing of Hanging Bolt>
Secure the hanging bolts by either one
of following methods.
Steel reinforcement
150 ~ 160mm
Insert
Hanging bolt M8 ~ 10
After removing the hardware,
retighten the screws.
(For securing of duct flange)
Piping side
Remove
wood screw.
Water level
0 ~ 5 mm
Adjust the piping side a little lower than the opposite side.
NOTICE
WARNING
Plan view
FDU 308, 408 Matrix : 900 × 980
(
FDU 508
FDU 808, 1008 Matrix : 900 × 1730
Heating
Upper limit 27°CDB at ambient
temperature 24°CWB
Lower limit higher than 10°CDB
For further details refer to the engineering data
which
<Hanging bolt location>
Hole-in anchor
Hole-in plug
Bottom face
Concrete
Top face
To adjust the level, use a level gauge or ad-
just as shown by the left figure.
Water in
Vinyl hole
through your local
All series Unit : mm
Inspection hole
)
Matrix : 900 × 1360
Min. 400
Piping space
Blowout
60
Front view shall be same
as shown at left.
100
Intake
Ambient temperature around
indoor unit
Upper limit
Dew point temperature not higher
than 28°C and
Relative humidity not higher than
80%
Lower limit 0°CDB
360 A
250
Item
Model
FDU 308, 408
FDU 508
FDU 808, 1008
Note: Unless the level is adjusted properly,
the float switch may malfunction or
operate improperly.
Unit: mm
A
890
1270
1640