York S1-1NP0347 Conversion Kit

The York S1-1NP0347 Conversion Kit is the essential OEM component for transitioning induced combustion furnaces from natural gas to liquid propane (LP) operation. As the direct engineering replacement for the S1-1NP0480, this kit ensures your equipment maintains factory-standard combustion profiles and safety margins. This comprehensive LP gas conversion package includes seven #55 burner orifices, a dedicated gas line pressure switch, a 3/8" tapped gas pipe nipple, and the 20461 wire harness required for a complete electrical and mechanical integration. Designed specifically for York, Coleman, and Luxaire systems, it addresses the precise manifold pressure requirements found in modern HVAC propane conversion projects. Utilizing genuine York replacement parts guarantees that the orifice sizing and low-pressure switch trip points align with manufacturer specifications, preventing common field issues like delayed ignition or improper flame rectification. This kit is intended for new equipment conversion and must be installed by a licensed technician to verify inlet gas pressures of 11" W.C. for stable LP operation.

• Ensures precise combustion calibration for liquid propane fuel sources.
• Direct OEM replacement for the discontinued S1-1NP0480 model.
• Includes the critical low-pressure switch to safeguard against fuel supply drops.
• Optimized for induced combustion furnaces to maintain high-efficiency ratings.
• Complete hardware set including #55 burner orifices and matching wire harness.

Can I use this kit for high-altitude installations? Yes, but you must consult the National Fuel Gas Code (ANSI Z223.1) for specific field derating requirements for installations above 2,000 feet.

What gas valve is this compatible with? This natural to LP conversion kit is primarily engineered for units equipped with White-Rodgers gas valves. Check the valve manufacturer on the furnace before proceeding.

Is the gas line pressure switch required? Absolutely. The gas line pressure switch is a mandatory safety component in this kit that prevents the system from running if the LP gas pressure falls below safe operating thresholds.

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.