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it monitors the burner area for escaping flames or "rollout" caused by heat exchanger failure
This specific OEM replacement part ensures full compatibility with York
While this is a York S1-025-26392-012
the switch breaks the circuit to prevent equipment damage and ensure safe operation
helping safeguard compressors
KMC Controls VTD-9422 Diaphragm it monitors the burner areaThe KMC Controls VTD 9422 is a critical replacement diaphragm specifically engineered for 2 inch pneumatic actuators. This genuine OEM component is designed to restore the seal and peak operational efficiency of damper actuators and valve assemblies within pneumatic HVAC systems. Constructed from high grade, flexible rubber building materials, the VTD 9422 diaphragm provides the necessary resilience to handle repeated cycling and pressure fluctuations