www.pmmag.com/articles/98693-hydronic-tank-controller
Hydronic Tank Controller
February 1, 2010

WaterFurnace International introduces the HydroZone hydronic tank controller and GeoLinkĀ® large flow center. The new HydroZone hydronic tank controller eliminates the need for external control devices when used in conjunction with WaterFurnace GeoTankā¢. The HydroZone can control and stage Envision NSW, NDW water to water units and Synergy3D products. A sensor built into geothermal storage tanks enables this flexible new module to control water temperature using one of three strategies: outdoor reset (heating only), tank control (manual) or tank control (auto changeover).
For more information, visit www.waterfurnace.com.