Multistack’s Virtual Movable End Cap II system can utilize a combination of 10, 15, 20, 30, 50, 70 and 85-ton Dedicated Heat Recovery Chillers (DHRC), to create systems from 20 to 600 tons that produce simultaneous cooling and heating. No reversing valves are used in the modules and the engineering design is based on a single refrigerant lift and counter-flow in the heat exchangers for maximum energy efficiencies.  Packaged as a four-pipe heat pump system, VME II is the next generation of simultaneous heating and cooling solutions. Multistack modules use dual independent compressors to ensure redundancy while focusing on energy savings and efficiency.  The significance of the VME II is based on Multistack DHRC units that allow you to produce hot and cold water simultaneously while tying into closed or ground loop water sources.  This design dramatically reduces piping and electrical costs as well as reducing the footprint needed to meet architectural limitations.  Set up and installation costs are reduced because the VME II valve units are factory assembled and are powered by the Multistack buss bar system, the same as standard Multistack modules.