American Standard Gas Furnaces User's Manual
Gas Furnaces — Non-Condensing
Fan Assisted Combustion System
Upflow / Horizontal and Downflow / Horizontal
User’s Information Guide
DO NOT USE THIS UNIT IF ANY PART HAS BEEN UNDER
WATER. IMMEDIATELY CALL A QUALIFIED SERVICE
TECHNICIAN TO INSPECT THE FURNACE AND TO RE-
PLACE ANY PART OF THE CONTROL SYSTEM AND ANY
GAS CONTROL WHICH HAS BEEN UNDERWATER.
Understand the signal words DANGER, WARNING, AND
CAUTION. These words are safety alert words. DANGER
indicates the most serious hazards which will result in
severe personal injury or death. WARNING indicates hazards
which could result in personal injury or death. CAUTION is
used to indicate unsafe practices which could result in minor
injury or property damage.
Dangers, Warnings & Cautions
To Start the Furnace
The Problem Solver
Regular Dealer Maintenance
If the information in this manual is not followed exactly,
a fire or explosion may result causing property
damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
• If you cannot reach your gas supplier,
call the fire department.
— DO NOT RELY ON SMELL ALONE TO DETECT
LEAKS. DUE TO VARIOUS FACTORS, YOU MAY
NOT BE ABLE TO SMELL FUEL GASES.
• U.L. recognized fuel gas and CO detectors are
recommended in all applications, and their
installation should be in accordance with the
manufacturer's recommendations and/or local
laws, rules, regulations, or customs.
— Installation and service must be performed by a
qualified installer, service agency or the gas
The flow of combustion and ventilating air must not be
obstructed from reaching the furnace. Air openings provided
in the casing of the furnace must be kept free of obstructions
which would restrict airflow, thereby affecting efficiency and
safe operation of your furnace.
Also, air openings provided to the area in which the furnace
is installed and the space around the furnace shall not be
blocked or obstructed. Keep this in mind should you choose to
remodel the area which contains your furnace. If additional
insulation is added after the furnace is installed, the area
around the furnace must be inspected to ensure it is free and
clear of insulation. If this furnace is installed in an attic or
other insulated space it must be kept free and clear of all insu-
lating materials as some insulating materials are combustible.
Furnaces must have air for proper performance. There must
be a free flow of fresh air sufficient for efficient combustion
and safe ventilation of your furnace.
The combustion air for your furnace must be fresh uncon-
taminated air. Paints, varnishes, laundry bleaches, deter-
gents, many household cleaners, water softening salts,
adhesives, and all such products release fumes containing
compounds which could lead to early heat exchanger and
vent system deterioration. Do not store these types of
products near your furnace.
Never store gasoline, combustible materials, or other flam-
mable liquids or vapors near your furnace.
Carbon monoxide, fire or smoke can cause serious bodily
injury, death, and/or property damage.