FACTORY SUPPLIED UPFLOW FURNACE
RETURN AIR FILTERS
UPFLOW FURNACE RETURN AIR FILTERS
CABINET | QTY* | CABINET | CABINET | |
WIDTH | BOTTOM FILTER | SIDE FILTER | ||
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1 | 14" X 25" X 1" | |||
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1 | 17" X 25" X 1" | |||
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21" | 1 | 20" X 25" X 1" | ||
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1 | 24" X 25" X 1" | |||
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*NOTE - On 5 or 6 ton airflow models, if the airflow requirement exceeds 1800 CFM, these models will require filters on both sides; OR 1 side and the bottom; OR just the bottom.
WARNING: Disconnect power to the
unit before removing the blower door. Failure to follow this warning could result in property damage, personal injury or death.
Downflow Furnace Filters
Downflow/Horizontal furnaces use 2 standard size perma- nent type air filters which may be located remote to the furnace or in the return air duct. Check with your dealer for the location of your filters.
A downflow/horizontal furnace vertical return air filter application, as shown, features two 14" x 20" x 1" filter in the
DOWNFLOW FILTER
A downflow/horizontal furnace with horizontal return air filter application, as shown, features two 14" x 20" x 1" filter in the
DOWNFLOW/HORIZONTAL FILTER
DOWNFLOW FILTER TABLE
REQUIRED FILTERS - DOWNFLOW
CABINET WIDTH | FILTER QUANTITY & SIZE | |
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2 - 14" X 20" X | 1" | |
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2 - 16" X 20" X | 1" | |
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21" | 2 - 16" X 20" X | 1" |
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2 - 16" X 20" X | 1" | |
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Pub. No. | Page 5 |