The York S1-024-19082-703 Heat Sequencer Relay is a vital component for staged heating control in residential and commercial air handlers and electric furnaces

commonly found in commercial refrigeration units

reducing fuel waste and minimizing emissions output

Easy Wiring: Raised screw terminals within a NEMA 1 enclosure simplify terminal access for field technicians

Enhanced Safety: Acts as a primary safety limit by detecting inducer motor failure or restricted flue venting

Lochinvar & A.O. Smith 100187920 Burner Assembly 319825-402 The York S1-024-19082-703 Heat SequencerThe Lochinvar & A. O. Smith 100187920 Burner Assembly is a critical OEM replacement component designed for high efficiency gas fired boilers and residential or commercial water heaters. This 16 inch burner assembly features a precision engineered #51 orifice (ORF) optimized for Propane (LP) or Natural Gas applications, depending on your specific unit configuration. As a veteran grade part, it ensures the proper air gas mixture required for clean