TACO VT2218-HY1-FC1A01 The Viridian VT2218 circulator is a temperature sensing, self-adjusting, variable speed wet rotor circulator with an ECM permanent magnet motor. Operating modes include Delta-T differential temperature, 4 fixed speeds, set point heat, set point cool, and boiler protection. Viridian VT2218 Delta-T Variable Speed, ECM High-Efficiency Circulator High-efficiency ECM motor uses up to 85% less electricity Delta-T operation maximizes system efficiency and comfort LCD displays mode, setting, watts, supply & return temperatures Easy to program and install 22 Shut-off Head, 18 gpm max flow ECM High-Efficiency Motor Operates in 5 different modes: - Delta-T (5-50F) Variable Speed [factory pre-set : 20] - Multi-Speed (4 fixed speeds) - Set Point Heat (50-220ËšF) variable speed with boiler protection option - Set Point Cool (32-100ËšF) - Boiler Protection (100-160ËšF), protects boiler from low return water temperature Full Speed Over-ride - For system fill and purging Full LCD display showing: - Mode, speed or temperature setting, watts, supply and return temperatures - Error code diagnostics - English or Metric units |