Fenwal 22-100000-663 Electrode Assembly

The Fenwal 22-100000-663 Electrode Assembly is a specialized HVAC ignition component designed for precise spark delivery in commercial and industrial combustion systems. This single-rod ceramic electrode provides reliable flame sensing and ignition for Fenwal 35 Series and related gas ignition controls. Engineered for high-temperature durability, the assembly features a high-grade alumina ceramic insulator to prevent voltage leakage and ensure a consistent spark gap. In the field, this Fenwal replacement part is essential for maintaining consistent flame rectification, effectively preventing nuisance lockouts caused by carbon buildup or porcelain fractures. It is compatible with various atmospheric and power burner applications where a robust igniter-sensor assembly is required. For contractors, installing a genuine 22-100000-663 flame probe ensures the integrity of the direct spark ignition (DSI) system, maintaining factory-specified tolerances for safe gas burner operation and efficient combustion cycles.

• High-Dielectric Ceramic Insulator: Prevents electrical tracking and ensures maximum energy transfer to the sparking tip.
• Stable Flame Rectification: Provides high-sensitivity feedback to the control module for accurate flame monitoring.
• Corrosion-Resistant Hardware: Withstands rigorous combustion environments to prevent electrode oxidation and failure.
• Exact OEM Fit: Drop-in compatibility for Fenwal systems reduces labor time and eliminates the need for field modifications.

Is the 22-100000-663 used for both ignition and sensing?
Yes, this is a local sensing electrode designed for single-rod systems where the same probe performs both the spark ignition and the flame rectification functions.

What causes this electrode assembly to fail prematurely?
Porcelain cracking due to over-tightening or thermal shock, and heavy carbon sooting, are the leading causes of signal loss or ignition failure in these assemblies.

Can the spark gap be adjusted on this model?
The gap is factory-set for optimal performance with Fenwal modules; however, technicians should verify the gap against the specific burner manufacturer’s requirements before finalizing installation.

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.