Cleaning the Burner Assembly

1 − Turn off electrical and gas power supplies to furnace. Remove upper and lower furnace access panels.

2 − Mark all gas valve wires and disconnect them from the valve.

3 − Disconnect the gas supply line from the gas valve. Re- move gas valve/manifold assembly.

4 − Mark and disconnect sensor wire from the sensor. Dis- connect 2-pin plug from the ignitor at the burner box.

5− Remove burner box cover and remove four screws which secure burner box assembly to vest panel. Re- move burner box from the unit. G61MP−135 only − Re- move and discard two additional shipping screws. See figure 41.

6 − Use the soft brush attachment on a vacuum cleaner to gently clean the face of the burners. Visually inspect the inside of the burners and crossovers for any block- age caused by foreign matter. Remove any blockage.

7− Reconnect the sensor wire and reconnect the 2−pin plug to the ignitor wiring harness.

8 − Reinstall the burner box assembly using the existing four screws. Make sure that the burners line up in the center of the burner ports.

9 − Reinstall the gas valve manifold assembly. Reconnect the gas supply line to the gas valve. Reinstall the burn- er box cover.

10 − Reconnect the gas valve wires to the gas valve.

11 − Replace the blower compartment access panel.

12 − Refer to instruction on verifying gas and electrical con- nections when re−establishing supplies.

13 − Follow lighting instructions to light and operate fur- nace for 5 minutes to ensure that heat exchanger is clean and dry and that furnace is operating properly.

14 − Replace heating compartment access panel.

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Lennox International Inc G61MP specifications
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G61MP specifications

Lennox International Inc. has long been a leader in HVAC solutions, and the G61MP gas furnace exemplifies the company's commitment to innovation and energy efficiency. This high-efficiency gas furnace operates with an Annual Fuel Utilization Efficiency (AFUE) of up to 96%, allowing homeowners to save significantly on energy costs while maintaining a comfortable indoor environment.

One of the primary features of the G61MP is its modulating gas valve. This technology enables the furnace to operate at multiple levels of heating output, ensuring that it can adjust its performance according to the home’s heating demands. By modulating the heating output, the G61MP maximizes efficiency and minimizes energy waste, providing a consistent temperature and improved comfort.

The G61MP also incorporates advanced two-stage heating, which enhances its performance by reducing temperature fluctuations in the home. This feature is especially beneficial during transitional weather periods when heating needs may vary widely. With its ability to operate on a lower stage most of the time, the furnace can produce quieter operation and reduced energy consumption.

In terms of design, the G61MP includes a sealed combustion chamber that draws air from outside the home for combustion, enhancing safety and efficiency. This design feature eliminates the need for indoor air, improving indoor air quality. The furnace is also equipped with a high-efficiency ECM blower motor that not only boosts comfort but operates quietly and uses less electricity compared to traditional motors.

Further enhancing its efficiency, the G61MP utilizes a variable-speed blower, which allows for precise control of airflow throughout the home. This results in better humidity control and improved air distribution, providing an overall more comfortable environment.

The Lennox G61MP is compatible with the iComfort S30 smart thermostat, allowing homeowners to control their heating remotely, adjust settings based on their schedules, and access energy usage data. This connectivity transforms the G61MP into an integral part of a smart home ecosystem, facilitating energy conservation and comfort optimization.

Lastly, the G61MP is designed with durability in mind. Its robust construction and high-quality materials ensure reliable performance and lengthy service life. Homeowners can feel assured that they are investing in a heating solution that will meet their needs for many winters to come. In summary, the Lennox G61MP gas furnace stands out with its high efficiency, advanced technology, and user-friendly features, making it a top choice for homeowners seeking exceptional heating performance.
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