-
205
-
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.
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
Make sure provide an inspection hole on the ceiling. It is indispensable to service electric equipment, motor, functional
components and cleaning of heat exchanger.
If a duct is not provided at the return air side but it is substituted with the space over the ceiling, humidity in the space
will increase by the infl uence of capacity of ventilation fan, strength of wind blowing againat the outdoor air louver,
weather (rainy day) and others.
• Moisture in air is likely to condense over the external plates of the unit and to drip on the ceiling. Unit should be
operated under the conditions as listed in the above table and within the limitation of wind volume. When the build-
ing is a concrete strucially immediately after the construction, humidity tends to rise if the space over the ceiling is
not substitued in place of a duct. In such occasion, it is necessary to insulate the entire unit with glass wool (25mm).
(Use a wire net or equivalent to hold glass wool in place.)
• It may run out the allowable limit of unit operation (Example: When outdoor air temperature is 35ºCD.B, return air
temperature is 27ºCW.B) and it could result in such troubles as compressor overload, etc..
Air conditioner indoor unit
Supply air port
Supply air duct
(optional or marketed item)
Ceiling surface
Return air port
(marketed item)
(with air filter)
Return air
duct
(marketed item)
Inspection hole
Return air grille
(Locality)
Return air grille
(option)
