The unit comes with color-coded 8-inch leads

Restricted airflow is the primary culprit

this switch is rated for 13A resistive and 2

SPNO Configuration: Reliable Close On Fall operation designed for specific York and Coleman sequences

allowing for rapid system recovery once the underlying overheat condition—such as a blocked vent

Weil McLain 511-842-370 Transformer The unit comes with color-codedThe Weil McLain 511 842 370 Transformer is a critical OEM replacement part engineered for high performance voltage regulation in residential and commercial boilers. As a step down control transformer, this component is designed to convert 120V primary voltage to a stable 24V secondary output, providing the necessary 40VA power rating to drive ignition modules, gas valves, and integrated boiler control systems. This HVAC control transformer is a direct