Lochinvar & A.O. Smith 100109295 Pilot Assembly

The Lochinvar & A.O. Smith 100109295 Pilot Assembly is a critical combustion component designed for Flammable Vapor (FV) ignition systems. Rated for 190 Deg C, this assembly ensures reliable flame rectification and pilot ignition in high-temperature environments. It serves as the direct OEM replacement for part number 9003542105, addressing common failure points in residential water heater pilot burners such as carbon buildup or thermocouple degradation. As a hot surface igniter and pilot burner combination, it is engineered for precise fitment in natural gas water heaters and compatible Lochinvar boilers. For technicians performing water heater troubleshooting, this assembly provides the necessary millivolt signal to the gas valve to maintain safe operation. Utilizing the 100109295 pilot kit ensures the combustion chamber maintains its FVIR compliance, preventing nuisance lockouts and ensuring consistent burner engagement under heavy thermal loads.

• OEM Compatibility: Exact drop-in replacement for 9003542105, eliminating the need for field modifications.
• High-Temperature Rating: The 190 Deg C Pilot Assembly FV is built to withstand rigorous combustion chamber conditions without premature sensor failure.
• Integrated Design: Includes the thermopile/thermocouple and tubing for a streamlined installation during service calls.
• Improved Flame Sensing: Enhanced metallurgy in the sensing probe reduces resistance issues that cause intermittent pilot outages.

What causes a pilot assembly to fail prematurely in FVIR units?
Most failures stem from restricted airflow through the flame arrestor or lint accumulation in the pilot orifice, which leads to a weak flame and insufficient millivolt production.

Is this assembly compatible with LP (Propane) units?
This specific 100109295 model is typically configured for natural gas; always verify the orifice size and gas type before installation as LP conversions require specific components.

Can I use a standard pilot assembly instead of the 190 Deg C rated version?
No. Using a non-rated assembly in an FVIR system can lead to safety switch trips or thermal fuse failure, as these systems rely on the specific thermal threshold of the 190 Deg C components.

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.