Installation Of Indoor Unit - Mitsubishi Heavy Industries SRK25GZ-L1 Handbook

8.5.1 Installation of indoor unit

All Wiring of this installation must comply with NATIONAL, STATE AND LOCAL REGULATIONS. 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. through your local 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.
(1) Selection of installation location
(a) Select location where the space above ceiling is larger than those mentioned
below and perfect draining can be assured.
(b) Places where perfect drainage can be prepared and sufficient drainage gradient
is available.
(c) Places free from air distrubances to the air inlet and outlet of the indoor unit.
(d) laces 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 causes the perfor-
mance 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) Preparation for installation
(a) Ceiling hole size and Position of suspension bolts.
1) The pattern sheet may shrink or expand as humidity changes, so check the actual size before use.
2) The size of ceiling opening can be adjusted within the range shown below. Bring the unit body to the ceiling opening right
in the center so as not to be set aside and so that space between a ceiling opening end and the outside of the unit body
becomes equal to that on the opposite side.
3) The size of the pattern sheet equals to the maximum size of the square ceiling opening.
(b) Location of Pipes
For the location of pipe, see the exterior dimension.
Ceiling opening dimension: 860 to 890 square
Hang bolt pitch: 780
Drain hose
(accessory)
Attach on site.
Hanger
FDT(N) 258~508
NOTICE
WARNING
Ceiling opening dimension: 740 square
F
Drain hose
(accessory)
Attach on site.
C
Hanger
Control box
Model
208
258, 308
408, 508
¡Installation space
Hang bolt pitch: 430
G
A
B
C
D
E
F
264
G
300 304
700
A B
E
D
Control box
FDT(N) 208
FDT ( N ) -H
Space above ceiling
Over 225 mm
Over 270 mm
Over 330 mm
(mm)
1,000 and over
Obstacle
Gas refrigerant piping
Liquid refrigerant piping
Drain piping connecting hole
Power intake hole
Hang bolt
Outside air intake hole
Supply air branch duct connecting hole
Unit: mm
Model a b
258, 308 210 260
408, 508 270 320
333