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Safety Compliance: Restores the original safety parameters of the furnace for secure residential operation
anti-short-cycle control
This mounting hardware is an essential component for any contractor upgrading legacy systems to modern System 350 or modular sequencer configurations where reliable DIN rail mounting is critical for long-term performance
return air
this OEM component ensures a drop-in fit for compatible York
York S1-2940-3551 Relay Safety Compliance: Restores the originalThe York S1 2940 3551 Relay is a specialized 24V 3 pole plug in heat relay engineered for precise switching in residential and light commercial HVAC systems. This HVAC contactor relay functions as a critical interface between low voltage control circuits and high voltage heating components, ensuring reliable load management. Designed for 24VAC coil operation, the S1 2940 3551 features a robust 3 pole configuration that allows for multi circuit control
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