PRODUCT LITERATURE
1993 Lennox Industries Inc.
Dallas, Texas
503,069M
11/93
Supersedes 502,893M
80MGF
SERIES
GAS FURNACE
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
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 vapors and liquids in the
vicinity of this or any other appliance.
Installation and service must be perĆ
formed by a qualified installer, serĆ
vice agency or the gas supplier.
Litho U.S.A.
WARNING
WHAT TO DO IF 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 supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier, call
the fire department.
Page 1
80MGF PARTS IDENTIFICATION
1
2
3
4
5
6
7
UPFLOW POSITION DOWNFLOW POSITION
1 - COMBUSTION AIR
BLOWER
2 - PRESSURE SWITCH
3 - GAS VALVE
4 - ROLLOUT SWITCH
(One on each side)
5 - BURNERS
6 - CONTROL BOARD
7 - BLOWER
7
6
1
2
3
4
5
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 furĆ
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
If overheating occurs or if gas supply fails to
shut off, shut off the manual gas valve to the apĆ
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 conĆ
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.
Page 2
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