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The Variable Air Volume (VAV) Controller is an electronic device for digital control of single duct, dual duct, fan powered, and supply/exhaust VAV box configurations. See 50HFigure 1. You may use the VAV as a standalone controller or connected to the Metasys?« network through a Network Control Module (NCM) or Companion?äó system. When connected to the Metasys Network, the VAV provides all point and control information to the rest of the network. The devices communicate through an N2 Bus.
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