American Standard Noncondensing Gas Furnaces manual Required Filters - Downflow, Downflow Filter

FACTORY SUPPLIED UPFLOW FURNACE

RETURN AIR FILTERS

UPFLOW FURNACE RETURN AIR FILTERS

CABINET	QTY*	CABINET	CABINET
WIDTH		BOTTOM FILTER	SIDE FILTER
14-1/2"	1	14" X 25" X 1"	17-1/2" X 25" X 1"
17-1/2"	1	17" X 25" X 1"	17-1/2" X 25" X 1"
21"	1	20" X 25" X 1"	17-1/2" X 25" X 1"
24-1/2"	1	24" X 25" X 1"	17-1/2" X 25" X 1"

*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 14-1/2" wide furnace cabinets; or two 16" x 20" x 1" filter in the 17-1/2", 21", and 24-1/2" wide furnace cabinets.

DOWNFLOW FILTER

A downflow/horizontal furnace with horizontal return air filter application, as shown, features two 14" x 20" x 1" filter in the 14-1/2" wide furnace cabinets; or two 16" x 20" x 1" filter in the 17-1/2", 21", and 24-1/2" wide furnace cabinets.

DOWNFLOW/HORIZONTAL FILTER

DOWNFLOW FILTER TABLE

REQUIRED FILTERS - DOWNFLOW

CABINET WIDTH	FILTER QUANTITY & SIZE
14-1/2"	2 - 14" X 20" X	1"
17-1/2"	2 - 16" X 20" X	1"
21"	2 - 16" X 20" X	1"
24-1/2"	2 - 16" X 20" X	1"

Pub. No. 32-5034-02 Page 5