Important Directions

1 - Keep the furnace area clear and free of combustible material, gasoline, and other flammable vapors and liq& 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 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&

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 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

product. Lennox strongly recommends annual in,

spection and maintenance of this appliance. Contact

your independent Lennox dealer for an inspection by a

qualified service technician.

Lighting Information and Operation

WARNING

If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, do not try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

To place 80UHG furnace into operation:

80UHG units are equipped with an electronic ignition system. Do not attempt to manually light burners on these furnaces. Each time thermostat calls for heat, the burner will automatically light.

Gas Valve Operation (Figure 2 and 3)

1 - STOP! Read the safety information at the beginning of this section.

2 - Set thermostat to lowest setting. See figure 1.

THERMOSTATS

FIGURE 1

3 - Turn off all electrical power to appliance.

4 - This appliance Is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

5 - Remove the control access panel.

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Lennox International Inc 80UHG manual Important Directions, Lighting Information and Operation, Thermostats
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80UHG specifications

Lennox International Inc. is a prominent player in the heating, ventilation, and air conditioning (HVAC) industry, renowned for its innovative solutions and commitment to energy efficiency. Among its diverse range of products, the Lennox 80UHG stands out as a high-performance, gas-fired furnace designed for residential applications. This model exemplifies the brand's dedication to quality, reliability, and advanced technology.

The 80UHG is characterized by its efficiency, operating at an Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%, which translates to substantial energy savings for homeowners. The unit is engineered to provide consistent heating while minimizing energy consumption. The use of a multi-speed blower motor enhances the unit’s performance, ensuring optimal airflow and temperature distribution throughout the home.

One of the standout features of the 80UHG is its durable construction. The furnace is built with a robust cabinet that helps to minimize noise during operation, providing a quieter environment for occupants. Additionally, the heat exchanger is crafted from high-quality materials, allowing for prolonged lifespan and dependable performance under varying conditions.

Lennox has incorporated several advanced technologies into the 80UHG, enhancing user experience and operational efficiency. The unit is compatible with the brand’s iComfort S30 smart thermostat, which allows for remote temperature control and monitoring from a smartphone. This integration not only provides convenience but also enables homeowners to optimize their energy use based on real-time data and personal preferences.

Safety is another critical aspect of the 80UHG’s design. The unit features a self-diagnostic control board that monitors system performance and alerts users to any potential issues. This proactive approach helps prevent breakdowns and extends the life of the furnace.

Another noteworthy characteristic of the 80UHG is its environmentally friendly operation. The furnace is designed to produce lower emissions, contributing to a reduced carbon footprint. This focus on sustainability is increasingly important in today’s eco-conscious market.

In summary, Lennox International Inc.’s 80UHG gas furnace is a reliable and efficient heating solution that combines advanced technologies with robust construction. Its high AFUE rating, compatibility with smart thermostats, and safety features make it an intelligent choice for homeowners looking to enhance their comfort while also minimizing energy costs and environmental impact.
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