Pro Series plug-and-play zoning panels include ANSI/ASHRAE Standard 62.1, Ventilation for Acceptable Indoor Air Quality, fresh-air control as well as bypass-control options. A plug-in display is used to calculate or set fresh-air minutes per hour. If fresh-air minutes per hour cannot be met during heating and cooling calls, the panel opens the fresh-air damper and turns the fan on until the fresh-air minutes are met. For bypass, a contractor can use a barometric damper and bypass duct, set the close stop on the zone dampers, or bypass to non-calling zones, eliminating the barometric damper and bypass duct.
—eControls Inc.