The Reznor 99258 LP to Natural Gas Conversion Kit is a specialized service component designed for technicians performing fuel conversions on Reznor gas-fired unit heaters. This genuine OEM Reznor 99258 kit facilitates the transition from liquid propane to natural gas, ensuring the manifold pressure and orifice sizing align with manufacturer specifications for safe unit heater fuel conversion. The kit typically serves B/E50 models and includes critical HVAC replacement parts: a Honeywell regulator spring kit (394588), a natural gas orifice and inlet fitting (103034), a natural gas disc (1401), and a burner orifice #47 (84853). By installing these natural gas conversion components, contractors can maintain precise manifold gas pressure (typically 3.5" w.c. for natural gas) and ensure optimal combustion efficiency. Utilizing this OEM conversion kit is essential for maintaining equipment compliance and achieving reliable performance in commercial and industrial heating applications. Key Benefits Ensures precise fuel delivery and thermal efficiency after natural gas conversion. Includes direct-fit OEM Reznor components to maintain system integrity and safety. Optimizes burner performance by providing the correct #47 burner orifice and regulator spring. Supports cost-effective fuel switching without requiring a full heater replacement. Helps technicians achieve a clean, stable flame and proper CO2 combustion levels. Common Questions Is the Honeywell 394588 regulator spring included? Yes, this kit includes the regulator spring, adjustment screw, and cap required to convert the gas valve to natural gas operation. Which Reznor models are compatible with the 99258 kit? This specific kit is primarily designed for B and E series units, specifically the 50 size models. Always verify your heater's serial number and rating plate before installation. Does this kit work for high-altitude installations? This kit is designed for standard elevations. For installations above 2,000 feet, additional orifice resizing or pressure switch adjustments may be required per manufacturer tables. 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.
