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GHR26 Parts Identification (Downflow Application Shown)
DuralokPlus
TM
HEAT EXCHANGER
ASSEMBLY
BURNER
BOX
CABINET
CONDENSATE TRAP
CONNECTION
COMBUSTION AIR PROVING
(PRESSURE) SWITCH
EXHAUST PIPE
CONNECTION
BLOWER MOTOR
HEATING ACCESS
PANEL
BURNERS
INTEGRATED
IGNITION/BLOWER
CONTROL
FRESH AIR INTAKE
CONNECTION
CONTROL BOX
GAS
VALVE
COMBUSTION AIR
BLOWER
BLOWER ACCESS
DOOR
DOOR INTERLOCK
SWITCH
TOP CAP
FLAME SIGHT
GLASS
FILTER
FIGURE 1
WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool dust. 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 further
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
Important Directions
1- Keep the furnace area clear and free of combustible
material, gasoline, and other flammable vapors 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 receive an
unobstructed flow of combustion and ventilating air.
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 the return air from a room where
another gas appliance (ie., a water heater) is
installed. Even though this furnace draws its combus-
tion air from outside of the structure, other gas ap-
pliances that share a utility room may not. 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 through
the house by the furnace duct system.
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.
WARNING
Carbon monoxide gas is invisible, odorless, and toxic.
Exposure to this gas can cause personal injury and even
death to all occupants, including pets. Any item that is
