engineered to regulate the primary air-to-fuel ratio within the burner assembly

The York S1-024-21678-700 is an OEM 24V SPDT Relay designed for heavy-duty switching in residential and commercial HVAC control systems

replacing a clogged or worn pilot assembly often restores reliable operation

This gasket is compatible with specific Lochinvar Knight models

Every 1751-007 comes with the cover plate

Slant Fin 440-856-000 Pressure Switch engineered to regulate the primaryThe Slant Fin 440 856 000 Pressure Switch is a critical safety component engineered specifically for high efficiency draft inducer monitoring. This OEM Slant Fin replacement part is calibrated to a fixed . 90" WC pressure setting, providing precise differential air pressure detection to ensure the combustion blower is moving sufficient air for safe burner operation. Designed for compatibility with the Slant Fin Victory II series, including models VHS