7
4.
Clean the heat exchange element.
Use a vacuum cleaner to remove dust and foreign
objects on the surface of the heat exchange
element.
• Use the vacuum cleaner equipped with a brush
on the tip of the suction nozzle.
• Lightly contact the brush on the surface of the
heat exchange element when cleaning.
（ ）
Be careful not to crush
the mesh of the heat
exchange elements.
NOTE
• Do not clean the heat exchange element forcefully
with a vacuum cleaner.
This may crush the mesh of the heat exchange
elements.
• Never wash the heat exchange element with water.
• Ask your dealer to professionally clean the heat
exchange element if it is very dirty.
5. Install the heat exchange element.
Put the heat exchange element on the rail and
insert it securely into place.
Rail
Rail
Heat
exchange element
Electrical
component
box
Rail
Rail
6. Fix the air
fi
lter.
Fix it in the reverse order of the above 2.
7. Install the maintenance cover.
4-1-3 HOW TO INSTALL AND
REPLACE THE HIGH-
PERFORMANCE FILTER
(OPTIONAL ACCESSORY)
• Replace the high-performance filter at least once a
year.
• Increase the frequency of replacement if the
unit is installed in a place where the air is very
contaminated.
(Replacement high-performance filter is optional.
See Page 10 for optional accessories.)
1. Detach the maintenance cover.
Refer to Page 6 of “How to clean the air filter”.
NOTE
• High-performance filter is for single use only.
You cannot clean and reuse it.
• Always use the air filter.
2.
Installation and replacement of high-
performance
fi
lter
Installation : Insert the filter in the position shown
in the figure below.
Replacement : Pull the high-performance filter
towards you and replace it with a
new high-performance filter.
High-performance
fi lter
Heat
exchange element
Air fi lter
Rail
High-
performance fi lter
Rail
Install it along
the inner side
of the rail.
Electrical
component
box
3. Install the maintenance cover.
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