Utica-Dunkirk FE3980B851 Control Board Kit 321894-709 This stainless steel heat exchanger

This stainless steel heat exchanger is designed to withstand the corrosive effects of condensation and high-temperature thermal cycling

ensuring zero-clearance fit in 3-ton outdoor units

The Reznor 202091 Motor is a heavy-duty

Precise NTC Calibration: Delivers accurate resistance readings to prevent 100208552-related sensor failure codes

Utica-Dunkirk FE3980B851 Control Board Kit 321894-709 This stainless steel heat exchangerThe Utica Dunkirk FE3980B851 Control Board Kit is a critical OEM replacement boiler control manufactured by ECR International. This factory authorized control board is engineered specifically for high efficiency condensing systems, serving as the direct internal logic processor for Utica and Dunkirk boiler models including the DBM34A, CCB150, and CHB100 150 series. As a technical FE CTRL BRD KIT, it manages critical ignition sequences, flame sensing,