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WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose
you to fiberglass wool. Breathing this may
cause lung cancer. (Fiberglass wool is known to
the State of California to cause cancer.)
Fiberglass wool may also cause respiratory,
skin, and eye irritation.
To reduce exposure to this substance or for fur-
ther information, consult material safety data
sheets available from address shown below, or
contact your supervisor.
Lennox Industries Inc.
P .O. Box 799900
Dallas, TX 75379- -9900
WARNING
Do not set thermostat below 60
ing mode. Setting thermostat below 60
reduces the number of heating cycles. Damage
to the unit may occur that is not covered by the
warranty.
WARNING
If overheating occurs or if gas supply fails to shut
off, shut off the manual gas valve to the ap-
pliance before shutting off electrical supply.
WARNING
Do not use this furnace if any part has been
underwater. Immediately call a qualified service
technician to inspect the furnace and to replace
any part of the control system and any gas con-
trol which has been under water.
CAUTION
Before attempting to perform any service or
maintenance, turn the electrical power to unit
OFF at disconnect switch.
IMPORTANT
Any additions, changes, or conversions required
in order for the appliance to satisfactorily meet
the application needs must be made by a Lennox
service technician using factory specified and ap-
proved parts.
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1 - - Keep the furnace area clear and free of combus-
tible material, gasoline, and other flammable va-
pors and liquids. If installed in an insulated area,
furnace must be kept free of insulating material.
Insulating material may be combustible.
2 - - DO NOT obstruct air flow to unit. Unit must re-
ceive an unobstructed flow of combustion and
ventilating air.
3 - - DO NOT store chlorine or fluorine products near
unit or introduce these products into the combus-
tion air. These products can cause furnace corro-
sion.
4 - - DO NOT draw return air from a room where this
furnace, or any other gas appliance (ie., a water
heater), is installed. When return air is drawn
from a room, a negative pressure is created in the
room. If a gas appliance is operating in a room
with negative pressure, the flue products can be
pulled back down the vent pipe and into the
room. This reverse flow of the flue gas may result
in incomplete combustion and the formation of
carbon monoxide gas. This toxic gas might then
be distributed throughout the house by the fur-
nace duct system.
Your furnace is a gas appliance. It is critical that the
gas supplied to the unit be completely burned to
avoid the production of carbon monoxide gas. Com-
plete combustion of the gas requires, but is not lim-
ited to, correct gas pressure and gas flow rate, ade-
quate combustion, air, and proper venting.
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Exposure to this gas can cause personal injury and
even death to all occupants, including pets. Any item
that is powered by or gives off heat from a combus-
tion process (including lawn mowers, automobiles,
and fireplaces) has the potential to produce carbon
monoxide gas. Because of this, Lennox recommends
the use of a carbon monoxide detector in your home,
even if you do not own gas appliances. Reliable de-
tectors are available at reasonable retail prices. Con-
tact your independent Lennox dealer for more details
about this investment in your safety.
Your furnace is designed to meet standards set by na-
tional agencies, and to operate safely when properly
installed and maintained. However, the unit’s perfor-
mance can be greatly impacted by the individual
installation and the operating environment. It is your
responsibility to ensure that this appliance is main-
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