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VAV Systems Installation, Operation And Troubleshooting

($850 per person)

Come to this class and learn an in-depth approach to today’s complex Variable Air Volume (VAV) systems. VAV systems are the most common type of commercial mechanical equipment installed today. They also come in a large number of varieties and control sequences. This class will help take the mystery out of VAV systems and VAV Boxes.

Prerequisite: Commercial HVAC Systems Bootcamp

Course Length: 3 Days 8am-4pm


  • History of VAV Systems

  • VAV Fans and Fan Control Schemes

  • Inlet Vane Control Schemes

  • VSD Role and Setup

  • Supply and Return Fan Tracking

  • VAV Fan Systems and Indoor Air Quality Issues

  • Common Control Schemes and Troubleshooting

  • Installation and Programming of VAV Fan  Control Systems

  • VAV Fan Control System Variations

  • How to troubleshoot the most common VAV Fan Problems

  • VAV Terminal Box Basics

  • VAV Reheat

  • Fan Powered Boxes

  • Constant Volume Boxes

  • Dual Duct Boxes

  • VAV Box Control Sequences

  • Pneumatic VAV Box Controls, Calibration, setup, and troubleshooting

  • DDC VAV Box Programming and Troubleshooting

  • VAV Box Controller Installation Best Practices

About The Instructor:


Ron Auvil has 37 years of HVAC and Controls Experience. He has worked as a senior controls technician for Johnson Controls. He has also HVAC and Controls classes across the United States for Johnson Controls, Honeywell, and others. He has written a textbook, ‘HVAC and Refrigeration Systems’ from American Technical Publishers. This textbook is being used as the standard textbook by the United Association Pipefitters.