Lennox 69W40 Limit Control 323055-751 System Safety: Maintains the integrity

System Safety: Maintains the integrity of the flame sensor and pilot assembly during the conversion process

it prevents equipment damage and potential safety hazards by interrupting the ignition sequence if airflow is restricted or the system exceeds safe operating parameters

High Flow Capacity: The 3/4-inch gas valve body supports high BTU inputs common in commercial boiler frames and water heating skids

A functional Reznor high limit switch should show zero resistance (normally closed) at room temperature

Key Benefits for Technicians Universal Compatibility: Includes a push-in clip and adapter assembly

Lennox 69W40 Limit Control 323055-751 System Safety: Maintains the integrityThe Lennox 69W40 Limit Control is a critical safety component designed for high temperature monitoring in residential and commercial heating systems. This fixed temperature limit switch features a 205 degree Fahrenheit (205F) trip point, ensuring the system shuts down immediately if internal temperatures exceed safe operational parameters. Engineered as an authentic Lennox replacement part, this high limit safety switch utilizes a reliable bimetallic