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A hard lockout typically occurs after multiple failed trials for ignition
the unit reacts to minute temperature changes for a narrow 6°F mechanical differential
reducing diagnostic and high-voltage labor time
Averaging Capability: Compatible with series-parallel wiring for accurate duct averaging or large space sensing
Utica-Dunkirk 240006940 Damper 320734-701 A hard lockout typically occursUpgrade your systems efficiency with the Utica Dunkirk 240006940 Damper, a 8 inch automatic vent damper engineered for precision airflow control in hydronic heating applications. Built with heavy duty galvanized steel, this OEM replacement part is specifically designed for compatibility with Utica MGB Boiler Series and Dunkirk DXL Series units. The automatic actuator ensures the flue remains closed during the off cycle to prevent standby heat loss,
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