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Important Directions

 1 - Keep the furnace area clear and free of combustible

material, petrol, and other flammable vapours and liqĆ

uids. If installed in an insulated area, furnace must be

kept free of insulating material. Insulating material may

be  combustible.  Inspect  furnace  venting  system  to

make sure it is in place, physically sound, and without

holes, corrosion, or blockage. Inspect furnace return

air duct connection to ensure duct is sealed to the furĆ

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 proĆ
duction of carbon monoxide gas. Complete combustion
of the gas requires, but is not limited to, correct gas presĆ
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
fireplaces) has the potential  to produce carbon monĆ
oxide 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 deĆ

tectors are available at reasonable retail prices. ConĆ
tact your independent Lennox dealer for more details
about this investment in your safety.

Your furnace is designed to meet standards set by nationĆ
al 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 opĆ
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
product. 

Lennox  strongly  recommends  annual  inĆ

spection and maintenance of this appliance.

 Contact

your independent Lennox dealer for an inspection  by a
qualified service technician.

Summary of Contents for G24MCE

Page 1: ...her appliance Installation and service must be perĆ formed by a qualified installer serĆ vice agency or the gas supplier Do not try to light any appliance Do not touch any electrical switch do not use any telephone in your building Immediately call your gas supplier from a neighbor s telephone Follow the gas supĆ plier s instructions If you cannot reach your gas supplier call the local fire brigad...

Page 2: ...NING 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 WARNING Do not use this furnace if any part has been underĆ water Immediately call a qualified service techniĆ cian to inspect the furnace and to replace any part of the control system and any gas control which has been under water CAUTION Before attemp...

Page 3: ... 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 proĆ duction of carbon monoxide gas Complete combustion of the gas requires but is not limited to correct gas presĆ sure and gas flow rate adequate combustion air and proper venting WARNING C...

Page 4: ...bor s phone Follow the gas supplier s instructions If you do not smell gas go to next step 6 Turn on all electrical power to the unit 7 Set the thermostat to desired setting NOTE When unit is first started steps 1 through 7 may need to be repeated to purge air from gas line 8 If the appliance still will not operate follow the instructions Turning Off Gas To Unit and call your service technician or...

Page 5: ...t your Lennox dealer for a periodic unit inspection by a qualified gas service engineer Capillary Tube Limit Switch Your Lennox furnace is equipped with a manuallyĆreset capillary tube limit switch which shuts off the gas supply to the furnace in the event of inadequate supply air high air temperature It is located on the vestibule panel near the gas valve To reset this control push the switch on ...

Page 6: ... seem to subĆ side while you are away from the house exposure to carbon monoxide could be the cause Your vigilance may pay off in early detection of a problem before either personal injury or property damage occurs Do not hesitate to contact a qualified service technician as an investment in your well being Planned Service You should expect a service technician to check the folĆ lowing items durin...

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