Direct-Mount Reliability: Specifically designed for closed tank applications

Universal Compatibility: Validated for use with legacy and modern electric heating thermostats like the T410 and T498

Use an ohmmeter to check resistance

The TB Woods 3J-1/2 Coupler Flange is a size 3

and mounting bracket to streamline installation on the job site

Lochinvar & A.O. Smith 100135300 Main Burner 30067439-890 Direct-Mount Reliability: Specifically designed forAs a veteran technician, you know that maintaining high efficiency combustion requires precision components. The Lochinvar & A. O. Smith 100135300 Main Burner is the direct OEM replacement burner for failing or carbon fouled units in commercial water heaters and boilers. This specific gas burner assembly is 100% identical to the BNR3417 and is engineered for Lochinvar Copper Fin and EnergyRite models, specifically those within the 400,000 to 750,000