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 pro6

duction of carbon monoxide gas. Complete combustion of the gas requires, but is not limited to, correct gas pres6 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 monoxide gas. Because

of this, the use of a carbon monoxide detector in your

home is recommended, even if you do not own gas

appliances. Reliable detectors are available at reason6

able retail prices. Contact your dealer for more details

about this investment in your safety.

Your furnace is designed to meet standards set by nation6 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 op6 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. Annual inspection and maintenance of this appliance is strongly recommended. Contact your

dealer for an inspection by a qualified service technician.

Your furnace is designed to meet standards set by nation6 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 op6 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. Annual inspection and maintenance of this appliance is strongly recommended. Contact your 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.

Placing furnace into operation:

F8AUH 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 (See figures 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 control access panel.

3

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Lennox International Inc F8AUH manual Lighting Information and Operation, Thermostats
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F8AUH specifications

Lennox International Inc, a notable player in the HVAC (heating, ventilation, and air conditioning) industry, has made significant strides in providing innovative climate control solutions. One of their standout products is the F8AUH air handler, designed to enhance both residential and commercial environments through advanced technology and superior performance.

The F8AUH air handler is characterized by its exceptional energy efficiency. It is equipped with a variable speed motor that adjusts air flow according to the specific needs of the space, significantly reducing energy consumption over traditional single-speed motors. This efficient operation not only translates to lower utility bills for consumers but also promotes environmental sustainability in line with global energy conservation goals.

In terms of design, the F8AUH is noted for its compact size and versatility. It can be easily integrated into existing HVAC systems or used as a standalone unit. The unit features a sleek, modern design that allows it to blend seamlessly into a variety of indoor environments without compromising aesthetics. It is suitable for installation in tight spaces, making it an ideal choice for urban dwellings where space can be at a premium.

The F8AUH also boasts advanced filtration capabilities. It comes equipped with a MERV 16 filter, which efficiently traps dust, allergens, and other particles, contributing to improved indoor air quality. This feature is particularly beneficial for households with allergy sufferers or for commercial environments where air quality is paramount.

Technologically, the F8AUH integrates seamlessly with smart home technologies. It can be remotely controlled via smartphone applications, allowing users to adjust settings from anywhere. This smart technology not only provides convenience but also enables users to monitor energy usage and optimize performance based on real-time data.

Furthermore, Lennox places a strong emphasis on reliability and durability in the design of the F8AUH. The unit is constructed with high-quality materials that can withstand various environmental conditions. This durability ensures a longer lifespan, reducing the need for frequent replacements.

In summary, the Lennox International Inc F8AUH air handler stands out for its energy efficiency, compact design, advanced filtration, and smart technology integration. These features collectively underscore Lennox's commitment to providing high-quality, innovative HVAC solutions that enhance indoor comfort while promoting energy conservation and sustainability.
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