Durable Brass Construction: Resists corrosion and thermal expansion during high-cycle furnace operation

meaning it initiates a burner cutout when internal temperatures reach 240 degrees Fahrenheit and resets once the temperature drops by 40 degrees

Common Questions When should I replace the collector box gasket

allowing for the restoration of the heating cycle without manual intervention

Resideo 396021 Conversion Kit Durable Brass Construction: Resists corrosionThe Resideo 396021 Conversion Kit is a field proven solution designed to convert two stage gas valves from natural gas to liquid propane (LP). Specifically engineered for compatibility with VR820xQ, VR830xQ, VR820xN, and VR830xN series gas controls, this kit enables precise pressure regulation within an 8" to 11" WC adjustment range. As a direct replacement for part number 90 396021, it ensures seamless integration during system retrofits or fuel