Reznor 1036540R Conversion Kit

The Reznor 1036540R Nat to LP Conversion Kit is a critical OEM field-service kit designed for professional technicians adapting Reznor gas-fired unit heaters from natural gas to liquid propane. This specific kit is engineered for high-capacity UDX, UDZ, UBX, and UBZ models in the 200,000 to 250,000 BTUH range. As a direct replacement for 201731 and 269839, the 1036540R ensures that manifold pressures and orifice sizing are precisely calibrated for propane combustion, maintaining peak thermal efficiency and safety in industrial or commercial environments. Utilizing genuine Reznor parts prevents the hazardous "over-firing" scenarios common with generic kits, ensuring the burner assembly operates within HVAC technician field specifications. Each kit includes the necessary regulator springs, orifices, and updated rating plates required for a code-compliant fuel conversion. Whether you are performing a new install or a mid-season fuel source swap, this unit heater conversion kit provides the exact tolerances needed for LP gas conversion without compromising the structural integrity of the heat exchanger.

• Precise Calibration: Specifically sized for 200k, 225k, and 250k BTUH units to ensure correct manifold pressure.
• Drop-in Compatibility: Serves as the official replacement for 269839 and 201731, eliminating guesswork during part sourcing.
• Complete Field Solution: Includes all hardware, rating labels, and regulator components for a professional, code-compliant conversion.
• OEM Performance: Maintains the original equipment’s combustion profile, protecting the primary and secondary heat exchangers from improper soot buildup.

• Which models does the 1036540R fit? This kit is specifically designed for Reznor UD and UB series (including UDX, UDZ, UBX, and UBZ) with 200-250 MBH input ratings.
• Is this kit required for high-altitude installations? While this kit converts the fuel type, high-altitude manifold pressure adjustments should still be verified according to Reznor technical manuals for elevations above 2,000 feet.
• Can I use this for smaller Reznor heaters? No, orifice sizing is specific to the BTU rating. Using a 250k BTU kit on a 100k BTU unit will cause dangerous over-firing.

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.