Industrial Application: Variable Air Volume Controller

What is a Variable Air Volume (VAV) Controller?

The Variable Air Volume (VAV) controller is an electronic device for digital control of single duct, dual duct, fan powered, and supply/exhaust VAV terminal configurations. Along with the control capability of the VAV box, the controller can also integrate the control of the room or zone baseboard heat and lighting logic.

How does it work?

A VAV system maintains the air supply at a constant temperature while individual zone thermostats vary the flow of air to each space maintaining the desired zone temperature.This is unlike a constant volume system that maintains a constant volume of airflow to the space,  but varies the temperature of the air stream in response to space temperature changes. VAV systems are predominantly single duct, but about 15% are dual duct designs.

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