Armstrong Fluid Technology’s COMPASS H high-efficiency wet-rotor circulators with advanced Design Envelope variable-speed technology features a Quadratic Sensorless flow-control algorithm that intelligently responds to system demand to consistently provide only the necessary flow. The circulator operates up to 20’ of head and up to 20 gpm flow, accepts 0-10 V DC external control, communicates with most modern boilers for improved boiler efficiency, includes nine different modes of operation (including auto), features Design Envelope technology that provides Sensorless demand-based control, has a performance range that covers a wide range of fixed speed circulators, includes a large wiring chamber and front-mounted terminal block, and complies with EEI<0.22.

Armstrong Fluid Technology.