Lennox G40UH-X User Manual
.
2000 Lennox Industries Inc.
Dallas, Texas,USA
503,991M
6/2000
£
G40UH(X)
SERIES
GAS FURNACE
Ifthe informationin thismanual isnot 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 performed by
a qualified installer, service agency or the gas
supplier.
06/00
$
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.
-
Immediatelycallyour gassupplierfroma neighbor’s
phone. Follow the gas supplier’s instructions.
-
Ifyou cannotreach your gassupplier,callthefire department.
503,991M
$!
G40UH(X) Parts Identification
TOP CAP
FLUE
COLLAR
DURALOKTMHEAT
EXCHANGER
ASSEMBLY
COMBUSTION AIR
PROVING
(PRESSURE) SWITCH
COMBUSTION AIR
INDUCER
UPPER ACCESS
PANEL
BURNERS
SURELIGHT
CONTROL BOARD
BLOWER ACCESS
PANEL
Z
Z
CABINET
GAS
VALVE
GAS
MANIFOLD
NAMEPLATE
BLOWER
MOTOR
CONTROL BOX
FIGURE 1
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.(Fiberglasswoolis known tothe Stateof 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
availablefromaddressshownbelow,orcontactyour
supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379-9900
NOTE - This manual must be left with the equipment
user.
Page 2
WARNING
Do not set thermostat below 60°F (16°C) in heating
mode. Setting thermostat below 60°F (16°C)reduces
the number of heating cycles. Damage to the unit
may occur that is not covered by the warranty.
WARNING
Ifoverheatingoccursorif gassupplyfailsto shut off,
shutoff themanual g as valveto theappliancebefore
shutting off electrical supply.
CAUTION
Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at the
disconnect switch.
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