While the standard 200RB4T3M is a uni-directional valve

this enthalpy sensor is designed for immediate integration into the system logic without the need for manual field adjustments

specifically replacing components in the S1-03101975000 kit series

Optimized Heat Exchange: The 825 RPM speed is tuned to match the CFM requirements of the original condenser coil

Lochinvar & A.O. Smith 100135307 Burner 319847-401 While the standard 200RB4T3M isThe Lochinvar & A. O. Smith 100135307 Burner is a critical combustion component engineered for high efficiency heating applications. This OEM burner assembly is designed specifically for compatibility with Lochinvar KBN106 and WBN106 models, as well as A. O. Smith equivalent units, ensuring an exact fit and reliable thermal output. As a direct replacement for the obsolete Lochinvar BNR3425, this assembly facilitates optimal gas to heat conversion