Lochinvar & A.O. Smith 100330184 Control Board 328140-751 What is the difference between

What is the difference between a standard 6309 and a 6309EMQ

suitable for electric heat secondary limits and motor loads

the Armstrong 811 steam trap minimizes maintenance requirements and prevents steam loss

managing high-temperature flue gases efficiently to prevent pressure switch tripping or ignition failure

Key Benefits: Direct OEM Replacement: Engineering-matched update for legacy part number 9006988005

Lochinvar & A.O. Smith 100330184 Control Board 328140-751 What is the difference betweenThe Lochinvar & A. O. Smith 100330184 Integrated Control Board is a critical component for managing terminal functions in commercial water heaters and high efficiency boilers, including the AWH0400 series. Built to handle complex ignition control sequences and safety protocols, this OEM replacement part regulates the draft inducer blower, silicon nitride igniter, and gas valve timing to ensure precise thermal modulation. As a main controller module,