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Safety Instructions
1 - Keep the furnace area clear and free of combustible
material, gasoline, and other flammable vapors
and liquids. If it is installed in an insulated area, the
furnace must be kept free of insulating material.
Insulating material may be combustible.
2 - DO NOT obstruct air flow to unit. Unit must receive
an unobstructed flow of combustion and ventilating
air. DO NOT block or obstruct air openings on
the furnace or air openings to the area in which
the furnace is installed. Take care to maintain
established clearances surrounding the furnace.
3 - DO NOT store chlorine or fluorine products near
unit or introduce these products into the combustion
air. These products can cause furnace corrosion.
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 furnace duct system.
WARNING
The blower door must be securely in place when the
blower and burners are operating. Gas fumes, which
could contain carbon monoxide, can be drawn into
the living space resulting in personal injury or death.
Your furnace is a gas appliance. It is critical that the gas
supplied to the unit be completely burned to avoid the pro-
duction of carbon monoxide gas. Complete combustion of
the gas requires, but is not limited to, correct gas pressure
and gas flow rate, adequate combustion air and proper
venting
Asphyxiation Hazard
The exhaust vent for this furnace must be leak-free
and must be securely connected to the furnace flue
collar at all times.
For your safety and to fulfill the terms of the limited
warranty, a licensed professional service technician
(or equivalent) must annually inspect this furnace
and its vent system.
Exposure to carbon monoxide gas can cause personal in-
jury 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 detectors are
available at reasonable retail prices. Contact your Lennox
dealer for more details about this investment in your safe-
ty.
Your furnace is designed to meet standards set by nation-
al agencies, and to operate safely when properly installed
and maintained. However, the unit's performance can be
greatly impacted by the individual installation and the op-
erating environment. It is your responsibility to ensure that
this appliance is maintained.
Proper maintenance is critical for your safety and the sat-
isfactory operation of the product. Lennox strongly rec-
ommends annual inspection and maintenance of this
appliance. Contact your Lennox dealer for an inspection
by a licensed professional service technician
.
Danger of explosion.
There are circumstances in which odorant used
with LP/propane gas can lose its scent. In case of
a leak, LP/propane gas will settle close to the floor
and may be difficult to smell. An LP/propane leak
detector should be installed in all LP applications.
Do not attempt to bleed the gas lines of air. Call your
local gas provider.
Page 3
WARNING
DANGER
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