Lochinvar & A.O. Smith 100111333 Burner Assembly

The Lochinvar & A.O. Smith 100111333 Burner Assembly is a factory-authorized OEM replacement part designed for high-efficiency natural gas commercial water heaters and boilers. This complete 16-inch assembly includes a precision-drilled #39 orifice, ensuring the correct BTU input and manifold pressure for optimal combustion. As a critical component in the combustion chamber, this 16-inch natural gas burner features an integrated door assembly and gasket, facilitating a secure seal to maintain venting integrity and prevent flue gas leakage. Built to exact Lochinvar burner assembly specifications, it eliminates the compatibility risks associated with universal aftermarket components. For technicians performing water heater burner replacement, this assembly provides a direct-fit solution that restores factory-standard flame patterns and thermal efficiency. Proper installation of the 100111333 burner is essential for maintaining the safety parameters and operational reliability of Lochinvar and A.O. Smith equipment in demanding commercial environments.

• Precision Engineering: Includes a factory-set #39 burner orifice for accurate gas-to-air mixing.
• Complete Assembly: Features the 16-inch burner and the mounting door for a streamlined installation process.
• Natural Gas Optimized: Rated specifically for NG burner applications in high-recovery heating systems.
• OEM Reliability: Direct replacement for part number 100111333 (formerly 9006001005) to ensure internal sensor and igniter alignment.

Is the mounting gasket included with this burner assembly?
Yes, this complete burner and door assembly typically includes the necessary mounting hardware and gasket to ensure a combustion-tight seal upon installation.

Can this assembly be used for Propane (LP) conversions?
No, this specific model is a natural gas burner. Converting units between fuel types requires a specific conversion kit to ensure the orifice size and spring pressure are correct for the fuel density.

When should this burner assembly be replaced?
Technicians should replace the assembly if there is visible warping of the burner head, significant scale buildup that cannot be cleared, or if the door assembly fails to maintain a vacuum-tight seal during operation.

This item is not eligible for free shipping.

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.