Reznor 17890 Pilot Assembly

The Reznor 17890 Pilot Assembly is a critical OEM replacement part engineered for precise ignition and sustained burner performance in unit heaters and furnaces. This natural gas pilot burner is a "less thermocouple" configuration, designed to house a standard thermocouple or flame sensor (sold separately) to facilitate a safe combustion sequence. Built to withstand the high-heat cycles of commercial heating environments, this setup ensures consistent pilot flame stability, preventing nuisance lockouts and maintaining the operational integrity of the heater's ignition system. As a direct-fit HVAC part, it eliminates the geometry issues common with universal assemblies, ensuring the orifice alignment and mounting bracket match factory specifications for the Reznor heating unit series.

Key Benefits:

• Compatible with a wide range of Reznor garage heaters and gas-fired unit heaters requiring an OEM pilot.
• Engineered for natural gas applications, ensuring proper BTU input for stable flame sensing.
• Robust construction prevents pilot burner warping under continuous thermal stress.
• Direct OEM replacement simplifies installation for field technicians by utilizing existing mounting hardware.
• Reliable ignition performance maintains system efficiency and prevents unburned gas accumulation.

Common Questions:

Does this assembly include the thermocouple?
No, the Reznor 17890 is a "less thermocouple" assembly. It is designed to be used with your existing sensor or a new compatible thermocouple depending on the specific furnace model requirements.

Which fuel type is this pilot assembly for?
This specific model is calibrated for natural gas systems. Always verify your equipment’s fuel source before replacing pilot and ignition components.

Can I use a universal pilot instead of the 17890?
While universal parts exist, using this genuine OEM part ensures that the pilot flame path precisely aligns with the burner and flame sensor, maintaining the factory safety rating of the HVAC system.

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.