Fenwal 22-100001-211 Electrode

The Fenwal 22-100001-211 Electrode is a critical OEM replacement part engineered for high-performance spark ignition and flame sensing in commercial and residential gas-fired equipment. This ignition electrode is constructed with premium glazed alumina ceramic insulation, allowing it to withstand extreme combustion chamber environments with temperature resistance up to 2175°F (1190°C). Designed for precision, it features a factory-set 0.125-inch spark gap to ensure a consistent, sharp-edge-to-sharp-edge discharge, which is vital for the reliable lighting of gas burners. As a dual-purpose component, it facilitates both direct spark ignition and flame rectification, providing the flame safeguard signal necessary for safe controller operation. This assembly is CSA certified and RoHS compliant, making it a standard choice for technicians maintaining high-efficiency boilers, water heaters, and furnaces. For optimal performance, ensure the electrode tip is positioned within the flame envelope without allowing the ceramic insulator to contact the flame directly.

• High-Temperature Durability: Glazed alumina ceramic housing prevents electrical leakage and withstands thermal shock up to 2175°F.
• Precise Ignition: Engineered with a 0.125" (±.03”) gap for reliable HV spark delivery to the burner or ground rod.
• Flame Sense Reliability: Supports accurate flame rectification circuits to prevent nuisance lockouts and ensure system safety.
• Universal Gas Compatibility: Suitable for a wide range of gas-fired appliances including modulating-condensing units and mesh burners.
• Industry Compliance: Meets CSA and RoHS standards for professional-grade HVACR installations.

What is the correct spark gap for the Fenwal 22-100001-211?
The standard spark gap for this electrode is 0.125 inches (approximately 3.12 mm). Maintaining this distance is critical for consistent arcing; gaps that are too wide may cause the ignition module to fail to spark.

Can this electrode be used for both ignition and flame sensing?
Yes, in "local sense" or "spark and sense" systems, this electrode assembly performs both the high-voltage spark and the flame sensing functions through a single rod. In "remote sense" setups, it serves as the dedicated spark igniter.

Why is my electrode ceramic cracking?
Ceramic failure is often caused by mechanical stress during installation or improper positioning where the insulator is exposed to direct flame impingement. Ensure the ceramic insulator is placed outside the main flame envelope to protect the dielectric strength of the alumina.

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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.