Lennox International Inc. SL280DFV User Manual

E 2010 Lennox Industries Inc.

Dallas, Texas, USA

506698−01 11−2010
Supersedes 506424−01

SL280DFV

SERIES

GAS FURNACE

FIRE OR EXPLOSION HAZARD.

Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.

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.

11/10

*2P1110*

Litho U.S.A.

WARNING

WHAT TO DO IF YOU SMELL GAS:

D Do not try to light any appliance.
D Extinguish any open flames.
D Do not touch any electrical switch; do not use any

phone in your building.

D Leave the building immediately.

D Immediately call your gas supplier from a neighbor’s

phone. Follow the gas supplier’s instructions.

D If you cannot reach your gas supplier, call the fire

department.

506698−01

*P506698-01*

SL280DFV Parts Identification

BLOWER MOTOR

HEAT EXCHANGER

ASSEMBLY

BURNERS

SURELIGHT

SPEED INTEGRATED CONTROL

®

TWO STAGE VARIABLE

ACCESS PANEL

COMBUSTION AIR INDUCER

PRESSURE SWITCH

COMBUSTION AIR

INDUCER

GAS VALVE

(Honeywell Gas Valve Shown)

NOTE − This manual is the property of the homeowner
and must be left with the equipment user.

Notice to Homeowner

This furnace is equipped with safety devices that protect
you and your property. If one or more of these devices is
activated, furnace operation will stop. If your home is left
unattended for an extended period of time, equipment op­eration must be checked periodically. If this is not possible,
the water supply to the house should be shut off and the
pipes should be drained. This will prevent problems associ­ated with a NO HEAT condition (frozen pipes, etc.)

CAUTION

Before attempting to perform any service or mainte­nance, turn the electrical power to unit OFF at the
disconnect switch.

CAUTION

As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.

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