Lochinvar & A.O. Smith 100075279 Burner Tube

The Lochinvar & A.O. Smith 100075279 Burner Tube is a high-performance main burner assembly engineered for specific commercial water heater and boiler parts applications. As a direct replacement for the discontinued Lochinvar BNR2404 (and identified by cross-reference numbers BNR2404K, 100135232, and BRN2404K), this component is critical for maintaining precise gas combustion and heat transfer efficiency. Designed for the Lochinvar Copper-Fin II series, its dimensions of approximately 24.5" x 5.45" x 3.75" ensure a proper fit within the combustion chamber, preventing delayed ignition or uneven flame patterns. This OEM burner tube is built to withstand high thermal stress in demanding hydronic systems. When replacing a Lochinvar burner assembly, verifying the model and serial number prefix is essential to ensure atmospheric or power burner compatibility. Utilizing authentic Lochinvar boiler components maintains the original equipment’s flue gas CO2 levels and prevents rapid carbon build-up on the heat exchanger. This part is vital for field technicians servicing large-scale domestic hot water or space heating plant installations.

Key Benefits:

• Direct Professional Replacement: Drop-in compatibility for the discontinued Lochinvar BNR2404 ensures seamless integration with existing manifolds.
• Broad Model Support: Verified for use in Copper-Fin II units including models CF/CH 990-2070 and CW/CB 985-2065.
• Precision Combustion: Optimized port design facilitates a stable flame anchor, reducing combustion noise and vibration during high-fire operation.
• Industrial-Grade Build: Constructed from heavy-duty materials to resist warping and oxidation in high-temperature environments.

Common Questions:

Is the 100075279 a direct replacement for the BNR2404?
Yes, the 100075279 is the current manufacturer-designated replacement for part number BNR2404 and BNR2404K. No technical modifications are required for installation in supported models.

Which Lochinvar models use this burner tube?
This tube is primarily used in commercial Lochinvar Copper-Fin and Copper-Fin II boilers and water heaters, specifically series 985, 990, 1255, 1260, 1435, 1440, 1795, 1800, 2065, and 2070.

Are there specific tools required for replacing this burner?
Technicians should have standard manometer equipment to verify manifold gas pressure and a combustion analyzer to check efficiency after the burner assembly is installed.

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.