Lochinvar & A.O. Smith 100109261 Pilot Assembly

For technicians servicing high-efficiency natural gas systems, the Lochinvar & A.O. Smith 100109261 Pilot Assembly is a critical OEM-equivalent replacement. Designed specifically for Flame Vapor (FV) systems, this 170 DEG C PILOT ASSEMBLY FV features a 170-degree pilot tube orientation for precise gas line routing in complex burner and manifold layouts. This natural gas water heater pilot ensures stable ignition and consistent flame sensing, preventing frequent lockout codes and pilot failure. Built to handle high-temperature industrial and residential environments up to 170°C, this 100109261 pilot assembly integrates seamlessly with modern Honeywell control valves and sealed combustion chambers.

Installation is straightforward for contractors, as the Lochinvar 9003488005 equivalent requires no field modifications for compatible A.O. Smith and Lochinvar models. Maintaining a reliable flame signal is essential for system safety and efficiency. This assembly replaces aging or carbon-fouled components that trigger persistent E6 error codes or oxygen-starvation issues in natural gas water heaters. By utilizing this genuine-spec assembly, you ensure the integrity of the heat-up cycle and thermopile response during high-demand operation.

Key Benefits:

• Optimized Ignition: Delivers a consistent spark and stable pilot flame for reliable natural gas burner activation.
• High-Temperature Durability: Engineered to withstand thermal loads up to 170°C in high-efficiency FVIR systems.
• OEM Fitment: Angled 170-degree orientation provides perfect alignment with original burner manifolds.
• Direct Cross-Reference: Replaces A.O. Smith 100109261 and Lochinvar 9003488005 without requiring bracket adjustments.
• Enhanced Safety: Supports proper combustion chamber airflow to prevent carbon buildup and premature tripping.

Common Questions:

• Is this assembly compatible with LP (Propane) systems? No, this specific part is designed for natural gas (NG) water heaters only.
• Why is my pilot light frequently going out on these models? It is often caused by a fouled pilot tube or a weakened thermopile signal; replacing the complete assembly ensures all ignition components are functional.
• Does this include the spark igniter and thermocouple? Yes, this is a complete assembly designed for rapid field replacement.

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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.