Lennox SL280DFV User's Information Manual

Lennox SL280DFV manual cover
Pages 6
Year 2010
Language(s)
English en

Lennox SL280DFV Specification

The Lennox SL280DFV is a high-efficiency gas furnace designed to provide reliable and energy-efficient heating for residential spaces. It features a dual-fuel capability, allowing it to seamlessly integrate with an electric heat pump to optimize energy usage by switching between electricity and gas based on efficiency. The furnace operates with an AFUE (Annual Fuel Utilization Efficiency) rating of 80%, ensuring that a significant portion of the fuel consumed is converted into usable heat.

This model includes a two-stage heating system that enhances comfort by maintaining consistent temperatures and reducing temperature swings. The SL280DFV is equipped with a variable-speed blower motor, which contributes to improved air circulation and reduced energy consumption by adjusting the airflow according to the heating needs of the home. Additionally, its SilentComfort technology minimizes operational noise, contributing to a quieter home environment.

The Lennox SL280DFV is designed with robust construction for increased durability and features a Duralok Plus heat exchanger made from patented ArmorTuf steel for enhanced resistance against corrosion and thermal stress. The furnace is compatible with the iComfort Wi-Fi thermostat, enabling users to control and monitor their heating system remotely for added convenience and efficiency.

Safety features include an integrated furnace control board that manages all furnace operations and self-diagnostics, ensuring optimal performance and facilitating maintenance. The SL280DFV is also engineered for easy installation and serviceability, with thoughtfully designed access panels and simplified wiring connections. Overall, the Lennox SL280DFV offers a blend of energy efficiency, comfort, and advanced technology, making it a suitable choice for homeowners seeking a dependable heating solution.

Lennox SL280DFV F.A.Q.

What is the recommended maintenance schedule for the Lennox SL280DFV furnace?

It is recommended to have the Lennox SL280DFV furnace inspected and serviced by a professional HVAC technician at least once a year. Regular maintenance includes checking and cleaning the burners, inspecting the heat exchanger, and replacing the air filter every 1-3 months depending on usage.

How can I troubleshoot if the Lennox SL280DFV furnace is not heating properly?

First, ensure that the thermostat is set to 'heat' and the temperature setting is higher than the current room temperature. Check that the furnace switch and circuit breakers are turned on. Inspect the air filter and replace it if it is dirty. If the issue persists, contact a qualified technician.

What should I do if I hear unusual noises coming from my Lennox SL280DFV furnace?

Unusual noises may indicate a mechanical issue. Check for loose panels or screws and tighten them. If the noise continues, it could be due to a motor issue or airflow obstruction. It's best to have a professional inspect the furnace to diagnose and fix the problem.

How do I reset the Lennox SL280DFV furnace after a power outage?

To reset the Lennox SL280DFV furnace, locate the power switch, usually found on the side of the furnace or nearby wall, and turn it off for about 30 seconds. Then, turn it back on. If the furnace does not restart, check the circuit breaker and thermostat settings.

What is the proper way to change the air filter on a Lennox SL280DFV furnace?

Turn off the furnace before changing the air filter. Locate the filter compartment, which is typically found near the return air duct or blower compartment. Slide out the old filter and replace it with a new one, ensuring the arrows on the filter frame point in the direction of airflow.

How can I improve the efficiency of my Lennox SL280DFV furnace during the winter months?

To improve efficiency, ensure your home is well-insulated and seal any drafts around windows and doors. Regularly replace the air filter, and keep vents and registers clear of obstructions to allow proper airflow. Consider scheduling a professional tune-up to optimize performance.

What should I do if the Lennox SL280DFV furnace is cycling on and off too frequently?

Frequent cycling may be caused by a dirty air filter, incorrect thermostat settings, or an oversized furnace. First, replace the air filter and ensure the thermostat is set properly. If the issue persists, consult a professional to evaluate the system's size and operation.

How can I safely shut down my Lennox SL280DFV furnace for the summer?

To shut down the furnace for summer, turn off the thermostat or switch it to 'cool' if using an integrated HVAC system. Shut off the furnace's power supply and the gas valve if applicable. It's also a good time to clean and inspect the unit for any maintenance needs.

What is the best way to prevent carbon monoxide leaks in my Lennox SL280DFV furnace?

Ensure annual professional inspections and maintenance of the furnace to check for cracks in the heat exchanger and proper ventilation. Install carbon monoxide detectors near sleeping areas and the furnace room. Address any unusual odors or symptoms immediately.

Why does my Lennox SL280DFV furnace have a yellow or flickering flame?

A yellow or flickering flame indicates incomplete combustion, which could be due to a dirty burner or improper gas pressure. This can lead to carbon monoxide production. Turn off the furnace and contact a professional technician to inspect and rectify the issue.