York S1-1NP0440 Conversion Kit

For field technicians and mechanical contractors tasked with fuel conversion, the York S1-1NP0440 Natural to LP Gas Conversion Kit provides a comprehensive solution for adapting high-efficiency York gas furnaces and heating appliances. This OEM-certified LP conversion kit is engineered to handle the specific pressure requirements of liquid propane, ensuring the manifold receives the correct BTU delivery across the burner profile. The kit typically includes precision-tapered LP burner orifices, a high-pressure regulator spring, and clear identification labels to maintain HVAC safety compliance during the transition from natural gas to propane.

Installation requires a meticulous focus on manifold pressure settings; utilizing this S1-1NP0440 conversion kit ensures that your equipment operates within manufacturer specifications for CO levels and steady-state efficiency. It is designed for standard elevation installations (below 2,000 ft) and is compatible with various Johnson Controls and York package units. By replacing the existing burner orifices and regulator components with these technical HVAC parts, contractors can achieve a stable flame pattern and reliable ignition in residential and light commercial settings where natural gas infrastructure is unavailable.

• Ensures accurate natural to LP gas conversion without compromising the heat exchanger’s integrity.
• Includes OEM burner orifices sized for specific BTU/hr ratings to prevent over-firing or soot accumulation.
• Critical for maintaining HVAC system performance and combustion safety when switching to propane.
• Simplifies the changeover process with a complete hardware set designed for direct compatibility with York gas valves.

• Is this kit compatible with high-altitude installations? This kit is intended for installations below 2,000 feet; units at higher elevations may require an additional de-rating kit to ensure proper gas-to-air ratios.
• What tools are required for this conversion? Technicians should use a calibrated manometer to verify manifold pressure and a combustion analyzer to confirm safe operation after the S1-1NP0440 is installed.
• Does this include the gas valve? No, this is a conversion hardware set that modifies the existing gas valve and manifold assembly.

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.