The water-cooled scroll compressor chillers from 30 to 200 tons are now available with R-410A refrigerant. The Open Choices™ feature allows integration of MicroTech II® controls with most building automation systems using open, standard protocols, such as LonWorks®, BACnet®, or Modbus® network communications. For retrofit applications, sizes up to 130 tons fit through a standard three-foot door, and the compact arrangement allows installers to easily maneuver the units in tight quarters. Two power sources - one to each refrigerant circuit - simplify changeout of old units and reduce operating costs. The chillers are designed to reduce operating costs for water-cooled, remote air-cooled, and evaporative condensers. Packaged chillers or units with remote air-cooled condensers are available.

McQuay International, 13600 Industrial Park Blvd., Minneapolis, MN 55441; 800-432-1342;

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