The HydroZone hydronic tank controller and GeoLink® large flow center are available. The hydronic tank controller eliminates the need for external control devices when used in conjunction with GeoTank™. The tank controller can control and stage Envision NSW and NDW water-to-water units and Synergy3D products. A sensor built into geothermal storage tanks enables this flexible module to control water temperature using one of three strategies: outdoor reset (heating only), tank control (manual), or tank control (auto changeover). With easy, menu-driven software and adjustable set points and deadbands, the unit can control up to four compressor stages, with the fourth stage configurable as auxiliary heat for the hydronic tank. The controller is designed for easy installation and setup. A lead-lag option for equal run time for each compressor and a warm-weather shutdown feature ensure efficient operation and cost savings for the homeowner. The GeoLink large flow center provides a compact pumping station with three-way valves for loop flushing. The center includes three-speed pumps and features ultraquiet operation as it provides flow rates required by high-demand units.

WaterFurnace International Inc., 9000 Conservation Way, Fort Wayne, IN 46809;