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G29M PARTS IDENTIFICATION
UPFLOW POSITION
DOWNFLOW POSITION
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2
3
4
5
7
8
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2
3
4
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1 - COMBUSTION AIR
BLOWER
2 - PRESSURE SWITCHES
3 - GAS VALVE
4 - ROLLOUT SWITCH
(One on each side)
5 - BURNERS
6 - TWO-STAGE CONTROL
BOARD
7 - IGNITION CONTROL BOARD
8 - BLOWER
9 - BLOWER DOOR
INTERLOCK SWITCH
10 - TERMINAL STRIP
11 - IEC POWER RECEPTACLE
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6
9
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WARNING
Product contains fiberglass wool.Disturbing the
insulation in this product during installation,
maintenance, or repair will expose you to fiber-
glass wool. Breathing this may cause lung can-
cer. (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
WARNING
If overheating occurs or if gas supply fails to shut
off, shut off the manual gas valve to the appliance
before shutting off electrical supply.
WARNING
Do not use this furnace if any part has been under-
water. Immediately call a qualified service techni-
cian to inspect the furnace and to replace any part
of the control system and any gas control which
has been under water.
CAUTION
Before attempting to perform any service or mainte-
nance, turn the electrical power to unit OFF at dis-
connect switch.
IMPORTANT
Any additions, changes, or conversions required in
order for the appliance to satisfactorily meet the ap-
plication needs must be made by a Lennox service
technician using factory specified and approved
parts.
Important Directions
1 - Keep the furnace area clear and free of combustible
material, gasoline, and other flammable vapors and liq-
uids. If installed in an insulated area, furnace must be
kept free of insulating material. Insulating material may
be combustible. Inspect furnace venting system to
make sure it is in place, physically sound, and without
holes, corrosion, or blockage. Inspect furnace return
air duct connection to ensure duct is sealed to the fur-
nace and terminates outside the space containing the
furnace. Inspect the physical support of the furnace to
guarantee that it is sound without sagging, cracks or
gaps around base and it maintains seal between base
and support.
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.
