York S1-025-27792-009 Rollout Switch You can verify continuity across

You can verify continuity across the relay terminals with a multimeter

042 orifice size (industry-standard #42 drill size)

the sampling tube end cap (typically included with the detector) must be installed on the far end of the System Sensor DST3 to create the necessary pressure differential for the photoelectric duct smoke detector to function

this coppered rod 24-inch length provides the versatility required for field adjustments and long-term service life in high-moisture environments typical of cooling towers and industrial boilers

5 microfarad rating exactly (+/- 6% tolerance)

York S1-025-27792-009 Rollout Switch You can verify continuity acrossThe York S1 025 27792 009 is a critical safety component designed for precise thermal monitoring in high efficiency gas furnaces. Rated for a 350 degree F open temperature, this rollout switch replacement monitors the burner vestibule for excessive heat caused by compromised heat exchangers or flue blockages. As a manual reset limit, it necessitates a physical inspection of the combustion area before the system can be restored to operation, preventing