with a 1/2" discharge line and 7/8" suction line interface

and the 11-circuit connector-to-blower deck transition

Three-Way Diverting Configuration: Allows for precision bypass or mixing in complex hydronic circuits

If you are upgrading your system to include air conditioning or a heat pump

Rheem-Ruud SP14339B Gas Valve Freon with a 1/2" discharge lineThe Rheem Ruud SP14339B Gas Valve is an OEM grade Natural Gas Control Valve and Thermostat Assembly designed for high capacity 75 gallon and select 50 plus gallon commercial and residential water heaters. Tailored for precision in demand heavy environments, this water heater regulator maintains a factory calibrated 5" Water Column (WC) pressure rating and features a standard 1 2" NPT inlet for professional grade integration. As the direct engineering