The all-in-one pump-control variable-voltage version of the Variable Speed 00® circulator can be installed in a wide range of commercial building HVAC applications. It has been designed to operate the pump at different speeds based on an externally generated analog voltage signal input. The circulator control accepts four external signal voltage ranges: 0-10 vdc, 0-20mA, 2-10 vdc, or 4-20mA signal. Easy to wire with a snap-in PC board and plug-in low-voltage wiring terminal, the UL-approved circulator integrates seamlessly with direct digital control or building management systems. Applications include pressure differential maintenance or set point temperature. The circulator also features a manual operation switch to validate the pump’s operation and internal LEDs. It can be used either linear for standard applications or for logarithmic outputs for use with fan coils.
Taco Inc., 1160 Cranston, RI 02920; 401-942-8000; 401-942-2360 (fax); www.taco-hvac.com