the McDonnell & Miller 194-B acts as a combination controller

This integrated furnace control module is engineered to withstand the thermal stressors of the cabinet environment

this Grade 5 filter utilizes targeted filtration media to achieve a maximum remaining oil aerosol content of 0

Durable 5-Foot Leads: Provides ample length for secure connection to the control board or wiring harness in expanded chassis layouts

Versatile Application: Robust enough for pump relays

Lochinvar & A.O. Smith 100113153 Wire Harness 318973-401 the McDonnell & Miller 194-BThe Lochinvar & A. O. Smith 100113153 Wire Harness is a critical OEM replacement part designed for high efficiency condensing boilers and commercial water heaters. This specialized flame sensor wire harness ensures stable signal transmission between the flame electrode and the integrated control board, preventing nuisance lockout codes caused by high resistance connections or insulation breakdown. Built to withstand the high temperature environment of