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22. INSTALLATION OF OPTIONAL AIR FILTERS
22.1 NOTE:
Optional set of air filters can be added and field installed as shown below.
22.2 TYPE OF AIR FILTERS:
Standard anti – bacteria air filters for dust & bacteria removal
Optional carbon filter for odor removal
Optional photo-catalytic filter for cigarette smoke removal
22.3 INSTALLATION STEPS OF OPTIONAL AIR FILTERS:
Step (1): After lifting return air grill up to the top of the unit, pull the standard air filters downward.
Step (2): Install optional air filters inside the top guides of the unit (specified for optional air filters),
then install standard air filters.
Step (3): Install return air grille and close it.
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