This control board is specifically compatible with the newer style AUX I/O board (P/N 073312721)

Whether you are servicing a standing pilot furnace or a commercial boiler

Drop-in Replacement: Serves as the direct S1-124240 replacement for obsolete part number S1-526-36282-000

reducing the need to carry multiple specialized OEM thermostats

York S1-502039 Ball Valve R-410A This control board is specificallyThe York S1 502039 Ball Valve is a critical isolation component engineered for HVACR refrigeration cycles and high pressure cooling systems. This 7 8" ODF sweat connection valve features a full port design to ensure maximum flow capacity with negligible pressure drop across the line. Constructed with a forged brass body and a chrome plated ball, the EBV 1070 ball valve provides superior resistance against corrosion and internal scaling in demanding