Reznor 110853 Pilot Assembly

The Reznor 110853 is a critical OEM vertical spark pilot kit engineered for field service professionals working on natural gas unit heaters. This spark ignition pilot assembly includes the high-tension flame rod and the precision-calibrated orifice required to maintain reliable ignition cycles in demanding commercial environments. Designed specifically for compatibility with Reznor heating systems, it ensures proper flame sensing and sequencing when paired with compatible ignition modules (such as the G770 series). Technical contractors prefer this original part to resolve common lockout issues caused by carbon buildup on the flame sensor or cracked ceramic insulators, which often lead to high-impedance ground faults.

• OEM Fitment: Drop-in replacement for Reznor F, FE, B, and BE series units (25-400 models), ensuring the mounting bracket and tubing alignment meet factory gas-flow specs.
• Integrated Spark & Sense: The assembly features a robust flame rod and electrode designed for consistent spark gap maintenance and millivolt signal stability.
• Included Components: Comprises the pilot burner, 1/8" OD pilot tubing (18 inches), flame sensor lead (21 inches), and necessary compression fittings.
• Natural Gas Optimized: Precision orifice sizing maintains the correct stoichiometric ratio for stable pilot flame anchoring in high-airflow environments.

Is this part compatible with liquid propane (LP) units?
No, the Reznor 110853 is specifically factory-set for natural gas. Using this in an LP configuration without the correct orifice kit will result in improper combustion and potential safety hazards.

Does this assembly include the ignition cable?
Yes, the kit typically includes the high-temperature flame sensor lead required to connect the pilot assembly directly to the unit's controller or spark module.

What are the symptoms of a failing 110853 assembly?
Expect intermittent pilot outages, "no flame detected" error codes on the module, or a visible lack of spark due to insulation breakdown on the electrode.

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.