158 Building Automation Systems - Troubleshooting VAV

158 HVACR Troubleshooting Variable Air Volume (VAV) Systems

(21 hours/ 60 days) Advanced
Written By - Ron Auvil

Variable Air Volume (VAV) Systems are the most common type of large commercial HVAC System in use today. This course is designed for advanced level technicians and building maintenance personnel who are responsible for troubleshooting these Variable Air Volume (VAV) systems. This course will start with an in-depth overview of the history and types of VAV systems. Next up is a list of common needed troubleshooting tools. Control system components and layouts to include pneumatic and DDC are given. VAV air handling units and sequences of operation of all major types are covered in depth. The most common troubleshooting scenarios of VAV air handling units are described as well.

The vast majority of VAV terminal Box types are thoroughly covered, as well as components and control sequences. The course will finish up with and in-depth multiple field troubleshooting scenarios which are represented in detail. All scenarios are derived from actual service calls.

Upon completion of this course the technician will have been exposed to a minimum 75% of the most common service calls on VAV systems.

Prerequisite: Successful completion of BAS Program 153-157 or Equivalent Field experience.

No textbook is needed or used. Will be using field manual pdf’s from various vendors. Actual Job Prints will be used as needed.

This course is NATE recognized for 21 hours of continuing education (CEHs) which are applicable to NATE re-certification.

The seven modules in this course are:

• Troubleshooting and Diagnostic Tools and Safety; Definition and Development of VAV
• VAV AHU and Terminal Box Control Systems and Components
• VAV Air Handling Units and Control Sequences
• VAV Air Handling Unit Troubleshooting (Most Common Scenarios)
• VAV Terminal Box Types and Control Sequences
• VAV Terminal Box Types and Control Sequences – VAV Box Modes of Operation
• VAV Terminal Box Troubleshooting Scenarios (Most Common Scenarios)

Textbook Reference: https://www.hvacrassets.net/Textbook/TextbookPage081021.pdf