Lennox slp98uh User Manual

E 2010 Lennox Industries Inc.

Dallas, Texas, USA

506443−01 07/2010

SLP98UH

SERIES

VARIABLE CAPACITY

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.

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.

07/10

*2P0710*

506443−01

*P506443-01*

SLP98UH Parts Identification

TOP CAP

DURALOK

EXCHANGER

ASSEMBLY

AIR INTAKE COLLAR

HEAT

BURNERS

FLUE

COLLAR

VARIABLE SPEED COMBUSTION AIR

INDUCER

SURELIGHT

INTEGRATED

CONTROL

NOTE − This manual must be left with the equipment user.

FIGURE 1

CABINET

PRESSURE SWITCH

ASSEMBLY

GAS VALVE

AND MANIFOLD

VARIABLE SPEED

BLOWER

MOTOR

CAUTION

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.)

Page 2

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

WARNING

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

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 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

CAUTION

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

If overheating occurs or if gas supply fails to shut off, shut off the manual gas valve to the furnace before shutting off electrical supply.

WARNING

Do not use this furnace if any part has been underwater. A flood−damaged furnace is extremely dangerous. Attempts to use the furnace can result in fire or explosion. Immediately call a licensed professional service technician (or equivalent) to inspect the furnace and to replace all gas controls, control system parts, and electrical parts that have been wet or to replace the furnace, if deemed necessary.

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.

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 material 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 intake or exhaust plastic 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 clearances 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 heater), is installed. When return air is drawn from a room,

a negative pressure is created in the room. If a gas appliance 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.

NOTICE

Any additions, changes, or conversions required in order for the appliance to satisfactorily meet the application needs must be made by a licensed professional installer (or equivalent) using factory−specified and approved parts.

Page 3

Your furnace is a gas appliance. It is critical that the gas supplied to the unit be completely burned to avoid the production 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.

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