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2 Access door
Access door must be provided without fail.
● Dimensions of access door and service space
( See exterior dimensions in page 11 )
1 Supply air duct
● 3-spot with
200 type duct are the standard specifications. Determine the number of spots based on following table.
● Use a band, etc. to connect the indoor unit and the supply air duct flange.
● Conduct the duct installation work before finshing the ceiling.
FDUMA302R
2 ~ 3-spot
(1)
Bad exampleBad example Good example
Notes (1) Shield the central supply air port for 2-spot.
● Limit the difference in length between spots at less than 2:1.
● Reduce the length of duct as much as possible.
● Reduce the number of bends as much as possible. (Corner R should be as larger as possible.)
3 Return air port
¡ When shipped, the return air port lies on the back.
¡ When connecting the duct to the return air port, remove the air filte if it is fitted to return air port.
¡ When placing the return air port to carry out suction from the bottom side, use the following procedure to replace the
return air duct joint and the bottom plate.
¡ Make sure to insulate the duct to prevent dewing on it.
4 Install the specitic supply air duct in a location where the air will circulate to the entire room.
¡ The duct connection is specific to the 200 circular duct.
¡ Conduct the installation of the specific supply air hole and the connection of
the duct before attaching them to the ceiling.
¡ Insulate the area where the duct is secured by a band for dew condensation
prevention.
Remove the screws which fasten
the bottom plate and the duct joint
on the return air port of the unit.
• Replace the removed bottom plate
and duct joint.
• Fit the duct joint with a screw,
fit the bottom plate.
•
Secure with a band,etc.
Supply air
duct
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