COMBUSTIONAND
VENTILATIONAIR
A WARNING: ALWAYS PRO-
VIDE THIS FURNACE AND ANY
OTHER FUEL BURNING APPLI-
ANCE WITH ENOUGH FRESH AIR
FOR PROPER COMBUSTION AND
VENTILATION OF THE FLUE
GASES. MOST BUILDING CODES
REQUIRE THAT OUTSIDE AIR BE
SUPPLIED INTO THE FURNACE
AREA. FAILURE TO DO SO MAY
CAUSE DEATH FROM CARBON
MONOXIDE POISONING.
Provide adequate facilities for
combustion and ventilation air in
accordance with Section 5.3, Air for
Combustion and Ventilation, of the
National Fuel Gas Code, ANSI
Z223. 1 - latest edition or CAN/CGA
B 149. 1 and .2 or, applicable provision
for the local building codes.
These
combustion and ventilation
facilities must not be obstructed.
The furnace uses over tempera-
ture switches to protect against over
temperature conditions in the burner
compartment caused by inadequate
combustion air.
A WARNING: DO NOT JUM-
PER
CONTROLS OR SWITCHES.
DOING SO MAY FORCE THE
FURNACE TO OPERATE IN AN
UNSAFE CONDITION.
THIS CAN
RESULT IN POSSIBLE PROPERTY
DAMAGE FROM FIRE OR
EXPLOSION AND CAN CAUSE
PERSONAL INJURY OR DEATH.
If any switch opens, a qualified
furnace repair technician should
check and/or correct for adequate
combustion air. If this unit is in a
closet, the door must be closed while
making this check.
The switch must be manually reset.
DO NOT reset any over temperature
switch without taking corrective action
to insure that an adequate supply of
combustion air is maintained at all
times. Replace any switch only with
an identical replacement part.
IMPORTANT: DO NOT DRAW
COMBUSTION OR VENTILATION
AIR FROM A CORROSIVE
ATMOSPHERE. ANY FAILURE DUE
TO CORROSIVE ELEMENTS IN
THE ATMOSPHERE IS EXCLUDED
FROM WARRANTY COVERAGE.
The following types of installations
(but not limited to the following)
require
outdoor air for combustion
because of chemical exposures.
• Commercial buildings
• Buildings with indoor pools
• Furnaces installed in laundry
rooms
• Furnaces in hobby or craft rooms
• Furnaces installed near chemical
storage areas
Combustion air must be free of acid-
forming chemicals such as sulphur,
fluorine and chlorine. These elements
are in aerosol sprays, detergents,
bleaches, cleaning solvents, air
fresheners, paint and varnish
removers, refrigerants and many
other commercial and house-hold
products. Vapors from these products
form acid compounds when burned in
a gas flame. The acid compounds are
highly corrosive after they condense.
Exposure to the following sub-
stances (but not limited to the follow-
ing) in the combustion air supply also
requires
OUTDOOR AIR for
combustion.
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine-based swimming pool
chemicals
• Water softening chemicals
• De-icing salts or chemicals
• Carbon Tetrachloride
• Halogen-type refrigerants
• Cleaning solvents (such as
perchloroethylene)
• Printing inks, paint removers,
varnishes, etc.
• Hydrochloric acid
• Cements and glues
• Antistatic fabric softeners for
clothes dryers
• Masonry acid washing materials
A WARNING: ALL FURNACE
INSTALLATIONS MUST COMPLY
WITH THE NATIONAL FUEL GAS
CODEANDLOCALCODESTO
PROVIDE ADEQUATE COMBUS-
TION AND VENTILATION AIR.
FAILURE TO PROVIDE ADEQUATE
COMBUSTION AND VENTILATION
AIR CAN RESULT IN EXPLOSION,
FIRE, PROPERTY DAMAGE,
CARBON MONOXIDE POISONING,
PERSONAL INJURY OR DEATH.
Combustion air requirements are
determined by whether the furnace is
in an open, unconfined location or in
a confined space such as a closet or
small room.
•
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