" or shows a resistance value that does not match the ambient temperature

For the Sensus 496-20-1 configured with a 1/4" orifice

Manual Reset Safety: High-pressure manual reset ensures manual intervention after extreme discharge pressure events

For maximum accuracy and to prevent moisture buildup in the diaphragm

Always verify the specific pressure switch rating and model compatibility using the water heater's serial number to ensure precise pneumatic response and system safety

Utica-Dunkirk 240006939 Vent Damper 30067439-890 " or shows a resistanceThe Utica Dunkirk 240006939 is a 7 inch automatic vent damper engineered for gas fired atmospheric boilers and furnaces to prevent standby heat loss. This electro mechanical flue damper utilizes a 24VAC synchronous motor and a specialized damper blade actuator to seal the venting system when the burner is off, effectively maintaining boiler water temperature and improving Seasonal Energy Efficiency Ratio (SEER) ratings. Designed as a direct OEM