The McDonnell & Miller 176319 Electrode is a high-pressure probe designed specifically for industrial hydronic and low-pressure steam systems

Whether you are performing a compressor oil pressure troubleshooting routine or a standard system overhaul

Most OEM fan blades utilize a integrated hub with a pre-installed set screw for securing to 1/2" shafts

Surface Mount

Utica-Dunkirk 550002583 Control Module R-410A The McDonnell & Miller 176319The Utica Dunkirk 550002583 Control Module is the designated OEM boiler control replacement for high efficiency hydronic systems. This unit is the primary integrated furnace control board, engineered to orchestrate the ignition sequence, blower timing, and safety circuit monitoring for Utica and Dunkirk condensing gas boilers. As the direct successor to the legacy 550002298, it ensures seamless HVAC system diagnostics and maintains strict operational