Lochinvar & A.O. Smith 100109316 Burner Assembly

When you're out in the field servicing high-recovery natural gas units, having the correct Lochinvar and A.O. Smith OEM replacement parts is critical for restoring system integrity. The 100109316 Burner Assembly is a high-performance FVIR burner assembly utilizing a #33 orifice specifically designed for Natural Gas (NG) applications. This 100109316 gas water heater burner is engineered to meet Flammable Vapor Ignition Resistant (FVIR) standards, ensuring safe and precise combustion within the combustion chamber. As a seasoned tech, you know that flame stabilization and optimized gas-to-air mixing are paramount; this genuine factory assembly maintains that factory-tuned British Thermal Unit (BTU) output without the reliability risks associated with generic after-market alternatives. It integrates directly with existing gas valves and flame sensors, providing a seamless fit for A.O. Smith and Lochinvar commercial and residential water heating systems requiring a #33 burner orifice.

• OEM Precision Fit: Eliminates the guesswork and field-modification risks, ensuring the 100109316 burner assembly seats perfectly in the FVIR chamber.
• Combustion Efficiency: The factory-installed #33 orifice is pre-set for Natural Gas, providing consistent thermal transfer and reduced cycling.
• Direct Replacement: Replaces outdated or compromised 100109314 and 100109316 assemblies to restore original equipment performance levels.
• Technical Reliability: Manufactured to withstand high-temperature operation, preventing premature warp and maintaining a clean blue flame across the burner head.

Does this assembly include the orifice?
Yes, this is a complete NAT FV Burner Assy which includes the pre-calibrated #33 orifice for Natural Gas operation.

Will this work with Propane (LP) units?
No. This assembly is specifically designed and jetted for Natural Gas. Using this in an LP system will cause unsafe combustion and equipment damage.

How do I verify if this fits my specific heater?
Always check the equipment rating plate for the Part Number or Orifice size. This part is a direct replacement for many Lochinvar and A.O. Smith units calling for the 100109316 component.

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.