It is chemically identical to and directly replaces model variations MA-5210-0-0-2

Simplified 2-Wire Installation: Utilizes a basic two-wire connection to the unit controller

High Starting Torque (HST): Ideal for systems using a TXV

Where should the pressure controls be mounted

Lochinvar & A.O. Smith 100074348 PCB Els PW 29614 It is chemically identical toThe Lochinvar & A. O. Smith 100074348 PCB is a critical OEM replacement control board designed for high efficiency tankless water heaters and select boiler models. Specifically engineered for 66J IN and 66J OS series units, this printed circuit board acts as the central intelligence for the system, regulating the ignition sequence, monitoring flame rectification, and processing data from integrated safety sensors. To ensure peak energy efficiency and