Lennox EL296UHV SERIES User's Information Manual

E 2015 Lennox Industries Inc.

Dallas, Texas, USA

506769-01
10/2015
Supersedes 02/2015

EL296UHV

SERIES

GAS FURNACE

Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional installer (or
equivalent), a service agency, or the gas supplier.

FIRE OR EXPLOSION HAZARD.

Failure to follow safety warnings exact
ly 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 ap
pliance.

Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.

WARNING

Litho U.S.A.

WARNING

WHAT TO DO IF YOU SMELL GAS:

D Do not try to light any appliance.
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.

EL296UHV Parts Identification

TOP CAP

FLUE

COLLAR

ACCESS PANEL

COMBUSTION AIR

INDUCER

DURALOK

TM

HEAT

EXCHANGER

ASSEMBLY

AIR INTAKE COLLAR

BURNERS

GAS VALVE

AND MANIFOLD

INTEGRATED

CONTROL

FIGURE 1

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 op

PRESSURE SWITCH

ASSEMBLY

BLOWER

MOTOR

eration 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 associ
ated with a NO HEAT condition (frozen pipes, etc.)

Page 2

CAUTION

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

Your furnace is a gas appliance. It is critical that the gas

supplied to the unit be completely burned to avoid the pro
duction 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.

NOTICE

Any additions, changes, or conversions required in
order for the appliance to satisfactorily meet the ap
plication needs must be made by a licensed profes
sional installer (or equivalent) using factory-speci
fied and approved parts.

Safety Instructions

1 - Keep the furnace area clear and free of combustible

material, gasoline, and other flammable vapors and
liquids. If it is installed in an insulated area, the furnace
must be kept free of insulating material. Insulating ma
terial may be combustible.

2 - After any heavy snow, ice or frozen fog event, the fur

nace vent pipes may become restricted. Always check
the vent system and remove any snow or ice that may
be obstructing the plastic intake or exhaust pipes.

3 - DO NOT obstruct air flow to unit. Unit must receive an

unobstructed flow of combustion and ventilating air.
DO NOT block or obstruct air openings on the furnace
or air openings to the area in which the furnace is
installed. Take care to maintain established clear
ances surrounding the furnace.

4 - DO NOT store chlorine or fluorine products near unit

or introduce these products into the combustion air.
These products can cause furnace corrosion.

5 - DO NOT draw return air from a room where this fur

nace, or any other gas appliance (ie., a water heat
er), is installed. When return air is drawn from a room,

a negative pressure is created in the room. If a gas ap
pliance is operating in a room with negative pressure,
the flue products can be pulled back down the vent
pipe and into the room. 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 throughout the house by the
furnace duct system.

WARNING

The blower door must be securely in place when the
blower and burners are operating. Gas fumes, which
could contain carbon monoxide, can be drawn into
the living space resulting in personal injury or death.

WARNING

Asphyxiation Hazard

Carbon monoxide gas is invisible, odorless and tox
ic.

The exhaust vent for this furnace must be leak-free
and must be securely connected to the furnace flue
collar at all times.

For your safety and to fulfill the terms of the limited
warranty, a licensed professional service technician
(or equivalent) must annually inspect this furnace
and its vent system.

Exposure to carbon monoxide gas can cause personal
injury and even death to all occupants, including pets. Any
item that is powered by or gives off heat from a combustion
process (including lawn mowers, automobiles, and fire
places) has the potential to produce carbon monoxide gas.
Because of this, Lennox recommends the use of a car

bon monoxide detector in your home, even if you do
not own gas appliances. Reliable detectors are available

at reasonable retail prices. Contact your Lennox dealer for
more details about this investment in your safety.

Your furnace is designed to meet standards set by national
agencies, and to operate safely when properly installed
and maintained. However, the unit's performance can be
greatly impacted by the individual installation and the op
erating environment. It is your responsibility to ensure that
this appliance is maintained. Proper maintenance is critical
for your safety and the satisfactory operation of the prod
uct. Lennox strongly recommends annual inspection
and maintenance of this appliance. Contact your Len
nox dealer for an inspection by a licensed professional ser
vice technician (or equivalent).

DANGER

Danger of explosion.

There are circumstances in which odorant used with
LP/propane gas can lose its scent. In case of a leak,
LP/propane gas will settle close to the floor and may
be difficult to smell. An LP/propane leak detector
should be installed in all LP applications.

Do not attempt to bleed the gas lines of air. Call your
local gas provider.

Page 3