The "/U" suffix typically denotes "Unit" or "Universal" packaging for retail distribution

allowing for remote monitoring of valve discharge via building management systems

Can I use an aftermarket interlock switch instead of the OEM 10690402S

115V power should be verified at the motor leads during the startup sequence to confirm the control board is sending the signal

Utica-Dunkirk FE3980C120 Electrode 340793-762 The "/U" suffix typically denotesAs a service technician, you know that consistent combustion starts with a precise spark. The Utica Dunkirk FE3980C120 Electrode is the authentic OEM replacement ignition electrode engineered specifically for high efficiency hydronic systems. This high performance ignitor is critical for maintaining the sequence of operation in Utica and Dunkirk CCB and CHB series boilers, ensuring the control board receives the necessary flame rectified signal for