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Section 15. Filters
15.1 Filter Considerations
Filter in
air handler
cabinet
(Upflow
Application)
• A filter must be installed within the system.
• A filter channel is provided in the unit, at the bot-
tom of the Blower/Filter compartment.
• For customer ease of fil ter maintenance, it is
recommended that a properly sized remote filter
grill(s) be installed for units that are difficult to
access. Airflow should not exceed the maximum
rated velocity of the filter being used.
Cabinet Size* A B C
Filter Size 16 x 20 20 x 20 22 x 20
* Cabinet size is indicated by the 7th digit in model number.
Table 15.1 Filter Sizes
STEP 6 - Reinstall all panels before starting the air
handler.
NOTE: After replacing all panels, loosen the Line
Set Panel screws approximately 1/4 - 1/2 turn. This
will improve the seal between the Heater Panel and
Line Set Panel.
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