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

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Lennox International Inc G20 manual Important Directions
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G20 specifications

Lennox International Inc G20 is a cutting-edge HVAC (heating, ventilation, and air conditioning) system that embodies innovation and efficiency. Known for its commitment to sustainability and advanced technology, the G20 model stands out in the competitive landscape of climate control solutions.

One of the defining features of the Lennox G20 is its high efficiency rating. The unit is designed to operate with superior energy efficiency, helping homeowners and businesses significantly reduce their energy consumption and utility bills. With an impressive SEER (Seasonal Energy Efficiency Ratio) rating, the G20 harnesses state-of-the-art technology to provide optimal cooling performance while minimizing environmental impact.

The G20 incorporates advanced smart technologies that enhance user experience. Lennox's proprietary iComfort S30 smart thermostat is compatible with this model, allowing users to monitor and control their indoor climate remotely via a smartphone app. This integration not only improves convenience but also helps optimize energy usage by allowing settings to be adjusted according to occupancy patterns.

Innovative technology extends to the system’s variable-speed compressor. This feature enables the G20 to adjust its cooling output based on the specific needs of the environment, ensuring consistent comfort without fluctuations. The result is a quieter operation and improved indoor air quality as the system runs for longer periods at lower speeds, effectively removing humidity.

Durability is another hallmark of the Lennox G20. Built with high-quality materials, the unit is designed to withstand a range of weather conditions and require minimal maintenance. Its robust construction ensures reliability, contributing to a long operational lifespan, which is a significant consideration for both residential and commercial applications.

The G20 also prioritizes eco-friendliness, utilizing R-410A refrigerant, which has a lower environmental impact compared to older refrigerants. Furthermore, the system is engineered with sound-dampening technology that reduces operational noise, creating a more pleasant indoor environment.

In summary, Lennox International Inc G20 represents state-of-the-art HVAC technology. Its energy efficiency, smart features, variable-speed compressor, durability, and eco-friendliness make it a premium choice for those seeking dependable climate control solutions. The G20 not only enhances comfort but also aligns with modern sustainability goals, making it a forward-thinking investment in a responsible future.
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