The Grundfos UPS15-58FRC circulator pump (59896343) model incorporates a three speed motor for increased versatility, a built-in check valve and a rotated flange designed for installation versatility. Wet rotor design allows it to be virtually silent while operating. The pump also saves power with pre-program usage times.The Grundfos UPS15-58FRC is for Closed systems with Maximum liquid temperature 230 F.Grundfos UPS15-58FRC Features Built-in motor protection for longer life and better performance. Suitable for a wide range of applications, including radiant heating, hydronic heating, fan coil heating, solar and other system types. Whisper-quiet operation for sound sensitive installations. Includes (2) Gaskets (O-rings). UL/CSA listed.Applications Closed loop radiant heating snow melting systems. Baseboard/Radiator/Fan coil heating and other hydronic heating applications.Technical Specifications of Grundfos UPS15-58FRC Voltage 115V Amperage at Speed 1 0.55 Amps Amperage at Speed 2 0.66 Amps Amperage at Speed 3 0.75 Amps Hertz 60 Hz Phase 1 Watts at Speed 1 60W Watts at Speed 2 80W Watts at Speed 3 87W Max Pressure 145 psi Max Temperature 230F Min Temperature 36F Flow Range 0-17 GPM Head Range 0-19.5 ft Horse Power 1/25HP Body Cast Iron Connections Flanged 1/2", 3/4", 1rdquo, 1-1/4rdquoWarranty2 years from the date of installation.DocumentationGrundfos UP Series Product Guide (pdf)Grundfos UPS15-58FRC (59896343) Technical data (pdf)