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Variable Air Volume (VAV) Controller Technical Bulletin
cgproducts.johnsoncontrols.comThe 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™ system.