Variable Air Volume (VAV) Box in HVAC
Posted on Friday Jun 26, 2020 at 09:15AM
This VAV box blog is the fourth in a series of posts that will explore how Veris Industries products can be used to monitor and regulate heating, ventilation, and air conditioning (HVAC) applications.
What is a Variable Air Volume Box?
In general, a variable air volume (VAV) box regulates the flow of air to a specific room or zone in a building. It controls the flow of air through the use of dampers. Some VAV box designs include supplementary heating and / or cooling coils to act as mini air handlers. Thermostats control VAV boxes. Specifically, thermostats control zone temperatures by telling the VAV box when and how to adjust its dampers.
Though VAV boxes are widely used in commercial and industrial applications, with the advent of new energy efficiency standards for homes, they are now being installed in some residential applications.
Variable Air Volume Box:
Variable Air Volume Box with Veris Products:
| Product Family | Why it is used on a VAV Box |
| Temperature | The temperature sensor provides the input to control the damper to regulate how much hot or cold air is sent to a space. If it has a heating or cooling coil, the sensor will also control those points, as well. If the VAV box is fan powered, the temp sensor will control the fan speed and / or power based on demand. |
| Current Sensors | In a fan powered VAV box, the CS monitors fan status to ensure proper air movement and circulation. (If current is being used by the fan motor, then the fan is in use – therefore air is flowing.) |
Veris Industries has a complete line of environmental and current sensing products for your VAV box applications. Visit our website or call our sales team for more details.
