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The fixed differential is designed to minimize short-cycling while maintaining tight temperature tolerances within the 100°F to 200°F operating window
Professional Aesthetics: Provides a clean
provided the 3-6" W
If the furnace control board indicates a dedicated "Ignition Failure" code or if you observe visible pitting
Temporary bypassing is only for diagnostic use by a qualified technician
Utica-Dunkirk 240006939 Vent Damper Refrigerant The fixed differential is designedThe 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
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