Lennox International Inc G20 manual Important Directions

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

WARNING

Do not use this furnace if any part has been under water. Immediately call a qualified service techni- cian to inspect the furnace and to replace any part of the control system and any gas control which has been under water.

WARNING

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

IMPORTANT

Any additions, changes, or conversions required in order for the appliance to satisfactory meet the application needs must be made by a Lennox ser- vice technician using factory specified and ap- proved parts.

CAUTION

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

holes, corrosion, or blockage. Inspect furnace return air duct connection to ensure duct is sealed to the fur- nace and terminates outside the space containing the furnace. Inspect the physical support of the furnace to guarantee that it is sound without sagging, cracks or gaps around base and it maintains seal between base and support.

2- DO NOT obstruct air flow to unit. Unit must receive an unobstructed flow of combustion and ventilating air.

3- DO NOT store chlorine or fluorine products near unit or introduce these products into the combustion air. These products can cause furnace corrosion.

4- DO NOT draw return air from a room where this furnace, 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.

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 pres- sure and gas flow rate, adequate combustion, air, and proper venting.

WARNING

Carbon monoxide gas is invisible, odorless, and toxic.

Exposure to this 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 carbon monoxide detector in your home, even

if you do not own gas appliances. Reliable detectors are available at reasonable retail prices. Contact your independent Lennox dealer for more details about this investment in your safety.

		Your furnace is designed to meet standards set by nation-
	IMPORTANT DIRECTIONS
		al agencies, and to operate safely when properly installed
1- Keep the furnace area clear and free of combustible
		and maintained. However, the unit’s performance can be
	material, gasoline, and other flammable vapors and liq-
		greatly impacted by the individual installation and the op-
	uids. If installed in an insulated area, furnace must be
		erating environment. It is your responsibility to ensure
	kept free of insulating material. Insulating material may
		that this appliance is maintained. Proper maintenance is
	be combustible. Inspect furnace venting system to

make sure it is in place, physically sound, and without3DJH￿critical for your safety and the satisfactory operation of the