Filters

6 - White Rodgers 36E Gas Valve - Switch gas valve lever to OFF. See figure 2.

Honeywell VR8205 Gas Valve - Turn knob on gas valve

clockwise to OFF. Do not force. See figure 3.

WHITE RODGERS 36E SERIES GAS VALVE

GAS VALVE SHOWN IN OFF POSITION

FIGURE 2

HONEYWELL VR8205 SERIES GAS VALVE

OFF

GAS VALVE SHOWN IN OFF POSITION

FIGURE 3

7 - Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you do not smell gas go to next step.

8 - White Rodgers 36E Gas Valve - Switch gas valve lever to ON.

Honeywell VR8205 Gas Valve - Turn knob on gas

valve counterclockwise to ON. Do not force.

9 - Replace the control access panel.

10 - Turn on all electrical power to unit.

11 - Set thermostat to desired setting.

NOTE – When unit is initially started, steps 1 through 11 may need to be repeated to purge air from gas line.

12 - If the appliance still will not operate, follow the instructions •To Turn Off Gas To Unit" and call your service technician or gas supplier.

To Turn Off Gas To Unit

1 - Set thermostat to lowest setting.

2 - Turn off all electrical power to unit if service is to be performed.

3 - Remove the control access panel.

4 - Switch lever on White Rodgers gas valve to OFF; turn knob on Honeywell valve clockwise to OFF. Do not force.

5 - Replace the control access panel.

80UHG series units are equipped with external filters which should be inspected monthly and replaced when necessary to assure proper furnace operation. See table 1 for filter sizes. Replacement filters used with 80UHG-40/60/75 units must have a minimum ve8 locity rating of 400 FPM. Replacement filters used with 80UHG-100/120 units require a minimum veloc8 ity rating of 625 FPM. Figures 4 and 5 show possible filter locations.

		TABLE 1

	MODEL NUMBER	FILTER SIZE

		1 FILTER
		1 FILTER


	80UHG-45/60/75	16 in. X 20 in. X 1 in.

	80UHG-100/120/140	20 in. X 20 in. X 1 in.

UPFLOW FURNACE

BOTTOM RETURN AIR

FIGURE 4

Page 4

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.