Lochinvar & A.O. Smith 100135299 Burner

The Lochinvar & A.O. Smith 100135299 Burner is a critical combustion component designed for high-performance residential and commercial hydronic applications. This OEM replacement burner, which is the direct successor to part BNR3416, features an integrated barbed pressure tap specifically engineered for a secure connection to the system's air pressure switch. Built to handle 400 to 750 KBTU/hr, this assembly ensures consistent thermal output and stable flame patterns in Lochinvar EnergyRite (ERN/ERL) and A.O. Smith EB/EW series boilers. For a veteran technician, this part is the standard for resolving ignition failure and flame rollout issues caused by warped or clogged burner tubes. By providing a reliable combustion pressure differential, this main burner assembly facilitates precise signal communication to the safety controls, mitigating common nuisance lockouts. Proper alignment of the pressure switch barb is essential for maintaining the negative pressure required for safe gas valve modulation and efficient heat transfer across the copper-fin heat exchanger.

• Dual Compatibility: Verified as an identical replacement for the legacy BNR3416 burner, ensuring a drop-in fit for both Lochinvar and A.O. Smith units.
• Integrated Pressure Port: Includes a factory-tapped barb for seamless pressure switch tubing connection, critical for monitoring blower performance.
• Optimized Combustion: Designed to maintain steady flame stability in high-output 400-750 KBTU/hr EnergyRite pool heaters and boilers.
• Structural Integrity: Durable construction resists thermal degradation, preventing the burner melting issues often seen in neglected high-temperature hydronic systems.

• Is this burner compatible with both Natural Gas and Liquid Propane units? Yes, this 100135299 burner assembly is utilized in both NG and LP configurations, though technicians must verify the specific orifice sizing and gas pressure settings during installation.
• Will this part resolve an 'Ignition Fault' error code? If the fault is caused by a blocked pressure tap or uneven flame across the burner surface, this replacement is the primary solution. However, always check the flame sensor and ignition module as well.
• Does this include the required mounting gasket? While the burner features the barbed pressure tap, it is a professional best practice to inspect and replace the burner plate gaskets simultaneously to ensure a gas-tight seal.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.