Lennox GHR26 User Manual
PRODUCT LITERATURE
¤
1997 Lennox Industries Inc.
Dallas, Texas,USA
503,738M
9/98
Supersedes 10/97
£
GHR26
SERIES
GAS FURNACE
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 vapor s and liquids in the
vic inity of this or any other app lianc e .
Installa tion a nd service must be perfor medbyaqualifiedinstaller,s er vice
agency or the gas s upplier.
LithoU.S.A.
WARNING
WHAT TO DOIF YOU SMELL GAS:
- Do not try to light any appliance.
- Extinguish any open flames.
- Do not touch any electrical switch; do not
use any phone in your building.
- Immediately call your gas s upplier from a
neighbor’s phone. Followthegas supplier’s
instr uctions.
- If you cannot reach your gas supplier, call
thefir e depar tment.
Page 1
GHR26 Parts Identification (Downflow Application Shown)
CABINET
BLOWER MOTOR
COMBUSTION AIR PROVING
(PRESSURE) SWITCH
DuralokPlus
HEAT EXCHANGER
ASSEMBLY
EXHAUST PIPE
CONNECTION
CONDENSATE TRAP
TM
CONNECTION
BURNER
BOX
BURNERS
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
availablef rom addressshownbelow,orcontactyour
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.
FILTER
TOP CAP
BLOWER ACCESS
DOOR
CONTROL BOX
INTEGRATED
IGNITION/BLOWER
CONTROL
DOOR INTERLOCK
SWITCH
COMBUSTION AIR
BLOWER
GAS
VALVE
FRESH AIR INTAKE
CONNECTION
HEATING ACCESS
PANEL
FLAME SIGHT
GLASS
3- DO NOT store chlorine or fluorine products near unit
or introduce these products into the combustion air.
These products can cause furnace corrosion.
DO NOT draw the return air from a room where
4-
another gas appliance (ie., a water heater) is
installed.
Eventhoughthis furnacedraws itscombustion air from outside of the structure, other gas appliancesthatshareautility roommay not.Whenreturn
air is drawn from a room, a negative pressure is
createdin theroom. Ifa gasappliance isoperatingina
roomwithnegativepressure, the flueproducts can be
pulledback downthe ventpipe andinto theroom. 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 production 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 c an cause personal injury and even
death to all occupants, including pets. Any item that is
Page 2
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