Resideo Q350A1321/B Pilot Assembly

The Resideo Q350A1321/B Pilot Assembly is a specialized ignition component engineered for high-efficiency natural gas-fired furnaces and boiler systems. Operating on a 24V electrical supply with a 60Hz frequency, this non-primary aerated pilot burner is designed specifically for intermittent pilot ignition (IPI) modules. It features an integrated insert orifice and is optimized for the Q309 series pilot burners, ensuring precise flame initiation and dependable service in both residential and commercial applications. The Style B mounting bracket and single-tip, left-hand direction design allow for an accurate fit on the main burner, providing a stable 500 BTU pilot flame to facilitate seamless main burner ignition.

Constructed with high-grade materials to withstand the thermal stress of modern combustion chambers, this OEM replacement part helps eliminate common service calls related to pilot outages or failed ignition sequences. For contractors, the 1/4 inch compression fitting and 3/4 inch fitting length ensure a secure connection to the gas line, maintaining the integrity of the flame rectification circuit. By replacing worn or carbon-fouled assemblies with a genuine Honeywell Resideo pilot burner, you ensure the system maintains peak combustion efficiency and safe operational cycles.

Key Benefits:

• Optimized Ignition: Designed for intermittent pilot systems to provide a stable 500 BTU flame for instant main burner light-off.
• Precision Engineering: Features a Style B bracket and single-tip left-hand orientation for verified compatibility with Q309 series equipment.
• Industrial Durability: Rugged construction holds up against recurring heat cycles and high-temperature environments in gas-fired boilers.
• Standardized Fit: Utilizes a standard 1/4" compression fitting for straightforward integration into existing gas lines.

Common Questions:

Is this pilot assembly compatible with Liquid Propane (LP) systems?
The Resideo Q350A1321/B is factory-configured for natural gas. For conversion to LP, a specific LP orifice must be used in accordance with manufacturer specifications.

What should I check if the pilot lights but the main burner won't engage?
First, verify that the flame sensor is properly grounded and the pilot flame is enveloping 3/8 to 1/2 inch of the sensor tip to ensure a strong flame rectification signal back to the module.

Does this include the compression nut and sleeve?
Yes, it typically features a 3/4 inch compression fitting designed to accept standard 1/4 inch pilot tubing for a leak-free seal.

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.