Lochinvar & A.O. Smith 100223755 Burner Assembly

The Lochinvar & A.O. Smith 100223755 Burner Assembly is a precision-engineered 18-inch final burner assy designed for high-recovery commercial water heaters and industrial boiler systems. Featuring a factory-calibrated #29 orifice and integrated thermocouple (TC) port, this assembly ensures stoichiometric combustion and stable flame rectification. As a genuine OEM replacement part, it maintains the specific manifold pressure and BTU input required for Lochinvar, A.O. Smith, and State water heater models including the GTN series. The 4.25-inch extension and durable stainless steel construction are built to withstand high thermal cycling in gas fired water heaters without warping or port clogging. Replacing a degraded final burner assembly kit with this 100223755 model restores peak thermal efficiency, reduces NOx emissions, and ensures reliable ignition across the entire burner surface. This unit is the direct cross-reference for older part number 9009207005, providing a seamless fit for contractors performing critical system maintenance.

Key Benefits:

• OEM Compatibility: Specifically engineered for Lochinvar and A.O. Smith systems to ensure exact fit and factory-spec performance.
• Optimized Combustion: The #29 orifice size provides precise fuel-to-air ratios for consistent heat transfer and energy utilization.
• Heavy-Duty Construction: Built for high-efficiency heating applications, offering superior resistance to thermal stress and corrosion.
• Enhanced Safety: Designed to maintain flame stability and proper venting, reducing the risk of carbon monoxide buildup.
• Streamlined Installation: Features a standard configuration for fast replacement in commercial water heaters and boilers.

Common Questions:

Is the 100223755 compatible with both Natural Gas and Liquid Propane?
This specific 18-inch burner assembly is typically configured for Natural Gas applications using the factory-installed #29 orifice. Always verify your manifold pressure and gas type against the appliance rating plate before installation.

What are the dimensions of this burner assembly?
The unit is a standard 18-inch final burner with a 4.25-inch extension, designed to fit into 18-inch or larger combustion chambers commonly found in commercial water heating equipment.

Does this kit include the orifice and mounting hardware?
The 100223755 burner assembly kit comes with the burner tube and the integrated #29 orifice. It is designed as a direct drop-in replacement for the original manifold assembly.

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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.