Lennox 58L69 Main Burner 320788-703 or a complete lack of

or a complete lack of power to the air handler or condenser despite proper incoming voltage

Integrated Control: Provides dedicated 120 VAC outputs for a humidifier

5 psi control tolerance required for low-pressure applications

How do I confirm the 27-degree pitch is correct for my unit

Use the on-board OFFSET and SPAN potentiometers

Lennox 58L69 Main Burner 320788-703 or a complete lack ofAs a field tested Lennox 58L69 main burner, this OEM replacement is a critical high grade component engineered for large scale heat exchange in high efficiency gas furnaces. This furnace burner assembly features a robust 5 tube construction, designed to ensure uniform flame distribution across the manifold for optimal combustion stability. Primarily utilized in the G23 and G40 series, it serves as a direct drop in for Lennox replacement part LB 94731D