this component is responsible for the initial transfer of thermal energy from the combustion process to the circulating air

an open circuit below 420 PSI typically indicates a failed internal diaphragm or contact set

Universal Field Integration: Compatible with a wide range of Warrick conductivity probes and sensor fittings

it is optimized for high-viscosity fuels

providing the control board with real-time feedback for modulating firing rates and preventing thermal overruns

Grundfos 00529911 Union Adapter Set 319825-402 this component is responsible forThe Grundfos 00529911 Union Adapter Set is a precision engineered fitting kit designed for seamless integration between Grundfos circulator pumps and standard 3 4 inch sweat copper tubing. This union kit facilitates a reliable, leak free connection, ensuring optimal fluid dynamics within hydronic heating systems and closed loop domestic hot water applications. Built with high grade cast bronze or brass components, these adapters provide superior