• Infinitely variable speed, ECM high-efficiency Delta-P (Differential Pressure) circulator that can operate in 3 different modes: Infinitely Variable Fixed Speed (min/max), Constant Pressure Variable Speed, Proportional Pressure Variable Speed
• High-Efficiency ECM motor uses up to 85% less electricity
• Performance range of 18 feet shut-off and 16 gpm max flow
• Easy to use selector dial to change the operating mode to match system design
• Multi-color LED's indicate operating mode or error code diagnostics
• Power range from 4-44 watts
• Innovative BIO Barrier protects the pump from system contaminants
• Whisper quiet operation
• Unique Sure Start automatic unblocking and air purging mode
• Nut-capture feature on flanges
• Dual electric knockouts
• Integral Flow Check (IFC) included
• 60Hz, single phase