Lochinvar & A.O. Smith 100074451 PCB 321894-708 While it is primarily for

While it is primarily for International Comfort Products

ensuring continuous drainage without steam loss

while the second switch is utilized to energize the boiler feed pump or a motorized feed valve as water levels fluctuate

this assembly includes the necessary baseplate to simplify installation for technicians

Lochinvar & A.O. Smith 100074451 PCB 321894-708 While it is primarily forThe Lochinvar & A. O. Smith 100074451 PCB is a critical integrated control module designed for high efficiency commercial and residential water heaters and boilers. Known as the MC50 PCB, this genuine OEM component manages vital system operations including ignition sequences, temperature regulation, and safety circuit monitoring. Engineered for a precise fit in Lochinvar Knight and various A. O. Smith tankless models, it ensures absolute signal