Safety Integrity: Prevents catastrophic heat exchanger failure by monitoring air temperature at the most critical point in the plenum

The York S1-025-31834-000 Limit Switch is a critical OEM safety component engineered for narrow-tolerance thermal protection in York HVAC systems

Manual Override Security: Requires a physical reset by a technician

This SPST furnace rollout switch is engineered to interrupt the burner circuit when it detects excessive temperatures caused by poor drafting or flame rollout conditions

Easy Installation: Standard #57 drill size allows for a straightforward swap during gas valve or manifold service

Functional Devices RIBAN24C Relay Safety Integrity: Prevents catastrophic heatThe Functional Devices RIBAN24C Relay is a reliable 24VAC DC pilot relay designed for seamless integration into HVAC control systems and building automation sequences. This track mount SPDT relay features a 10 Amp contact rating, making it an ideal choice for switching smaller loads or interfacing between low voltage controllers and high voltage equipment. The dry contact relay configuration ensures clean signal isolation, while the polarized LED