User’s Information

Downflow Furnace Filters

Downflow/Horizontal furnaces are factory supplied with

2 standard size permanent 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.

Airflow

DOWNFLOW FILTER

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

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"

 

 

 

The Problem Solver

A furnace is not a household appliance. It is complex and requires professional maintenance and repair.

That’s why attempts at “do-it-yourself” repairs on an in- warranty unit may void the remainder of your warranty.

Other than performing the simple maintenance recom- mended in this manual, you should not attempt to make any adjustments to your furnace. Your dealer will be able to take

care of any questions or problems you may have. A periodic inspection of your furnace should be made by a qualified service agency at the start of each heating season.

Keep your furnace looking like new for years.

Clean the enamel finish of your furnace with ordinary soap and water. For stubborn grease spots, use a household detergent. Lacquer thinner or other synthetic solvents may damage the finish.

Save time and money. Before calling for service, check the following:

Problem

 

Possible Trouble

 

Possible Remedy

 

 

 

 

No Heating –

1. Thermostat set incorrectly.

1.

Adjust thermostat. See operating instructions.

Blower does not operate.

2.

Blown fuse or tripped

2.

Replace or reset protective device or call for

 

 

 

circuit breaker.

 

servicer.

 

3.

Defective component.

3.

Most controls are automatic and will recycle. If

 

 

 

 

your unit still does not operate call for servicer.

 

4.

Burner does not ignite.

4.

Call servicer.

 

5.

Main gas line turned off.

5.

Have gas company check.

 

6.

Blower door removed or ajar.

6.

Close door securely to restore power to

 

 

 

 

blower and gas valve.

 

7.

Lockout

7.

Turn power on-off-on-off twice in 30 seconds.

 

 

 

 

 

Insufficient Heating –

1.

Dirty air filters.

1.

Clean or replace filters.

Blower operates continuously.

2.

Blocked supply or return

2.

Make sure registers are open and

 

 

 

registers.

 

No obstacles blocking off the air.

 

 

 

 

 

No Heat – Vent motor is running.

 

Restricted or plugged furnace

1.

Remove drain clamps to condensate trap

 

 

Condensate drain.

 

and drain pan outlet.

 

 

 

2.

Flush or clean drain blockage.

 

 

 

3.

Reinstall clamps.

 

 

 

 

 

Unusual Noise

 

 

 

Call your servicer

 

 

 

 

 

6

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American Standard Gas Furnaces Problem Solver, Downflow Furnace Filters, Keep your furnace looking like new for years