Taco’s second-generation BumbleBee variable-speed, wet-rotor circulator features a high-efficiency ECM motor requiring only 9 to 42 watts, depending on the load. The pump operates in three modes: Delta-T (∆T) differential temperature mode for fixed settings from 5°F to 50°F difference between supply and return sensors; fixed speed for a specific gpm; and set point mode to meet a desired temperature (65°F to 220°F). The Bumblebee features a brushless DC permanent magnet motor with the option of 115-230v, 50/60 Hz input power. The programmable pump offers new plug-in remote temperature sensors and a digital display that reveals real-time watt usage and gpm flow.
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