The Williams 8947 Natural to LP Gas Conversion Kit is a field-proven solution designed for transitioning 500A Series hearth heaters from natural gas to propane. This kit is specifically engineered for 50,000 BTU models, including 5001522A and 5002522A (gravity/no blower) and 5001922A and 5002922A (with blower). As a veteran technician knows, maintaining 50,000 BTU gas furnace performance requires precise orifice sizing; this kit includes a #45 drill size burner orifice to ensure the correct 10" W.C. manifold pressure for liquid propane. It is strictly compatible with Williams brand 6003 gas valves and is intended for units manufactured after 2013. The package includes a high-precision pressure regulator spring, a pilot orifice, and necessary conversion labels and tags for local code compliance. Proper furnace gas type conversion ensures the burner operates at the rated 50,000 BTU input, providing reliable heat without the risk of soot or improper combustion associated with non-OEM parts. Key Benefits Verified Compatibility: Purpose-built for 500A Series models (5001522A, 5002522A, 5001922A, 5002922A). Precision Metering: Includes a factory-spec #45 burner orifice for accurate fuel-to-air ratios. Complete Hardware Set: Contains a dedicated LP regulator spring, pilot orifice, and required safety tagging. Code Compliance: Includes conversion certificates to document the change in fuel source for inspectors. Common Questions Can I use this kit on a Williams furnace made before 2013? This specific kit is designed for units manufactured from 2013 to the present. For older models, you must verify the gas valve model number, as the 8947 is exclusively for the 6003 series valve. What is the required manifold pressure after installing the 8947 kit? Once the conversion is complete, the manifold pressure should be set to 10" W.C. for Liquid Propane, while the inlet pressure must be between 11" and 13" W.C. Does this kit include a new gas valve? No, this is a conversion kit that modifies your existing 6003 series Williams gas valve by replacing the internal regulator spring and orifices. This item is not eligible for free shipping. 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.
