Category Archives: BAS Education

Types of Variable Air Volume (VAV) Boxes

As we previously discussed in one of our building technology basics videos, VAV (Variable Air Volume) controllers are integral to HVAC systems that require varying cooling and heating loads in different zones. In this article, we will explore some of the most common types of VAV boxes and their specific applications. Of course, there are many one-offs and iterations of these applications, but these are the ones you’ll see most frequently.

Continue reading Types of Variable Air Volume (VAV) Boxes
 

Analog Signals: Milliamps vs. Voltage

In building automation system applications, the most common types of analog signals are milliamp and DC voltage.

DC voltage signals are most often measured using 0-10V signals, but we also sometimes see 0-5V or 2-10V. The reason for the popularity of the voltage signal is it is easy to troubleshoot and almost all controllers will accept this type of signal.

Continue reading Analog Signals: Milliamps vs. Voltage
 

Integrating Legacy Control Systems

If your facility currently has a legacy control system that needs upgrading but you don’t have the capital budget for a full retrofit, you are likely considering some form of building automation system integration. By integration, we are referring to an approach that would leverage some portion of your existing system while likely changing out some of the higher-level components such as the front-end software and/or parent-level controllers. Integration is a logical choice in this situation but before moving forward with this approach, there are some important elements that you should fully understand.

Continue reading Integrating Legacy Control Systems
 

Trim and Response for Supply Pressure

 by Andrew Walton

Static Air Pressure (SAP)

“Trim and response” is a way of controlling static air pressure (SAP) within a building’s HVAC system. SAP is one of the most important factors in HVAC design. SAP refers to the resistance to airflow in a heating and cooling system’s components and ductwork within a building. The push of the air must be greater than the resistance to the flow or no air will circulate through the ducts.

Continue reading Trim and Response for Supply Pressure
 

5 Fundamentals Every Property Manager should know about Building Automation

When it comes to building automation systems (BAS), Property Managers tend to lean on their facilities operations team to tell them what is going on and what needs to be done. A BAS can be daunting to understand, but at the same time, it is responsible for a large portion of tenant satisfaction and operational budget. While a property manager or administrator does not need to know the ins and outs of operating a BAS, having a basic understanding of how these systems work and what to look out for when evaluating potential service partners can make all the difference.

Continue reading 5 Fundamentals Every Property Manager should know about Building Automation
 

Addressing COVID-19 with your HVAC System

Covid-19 is an abbreviation of Coronavirus Disease 2019, which is the new coronavirus currently affecting the majority of the world. Its main transmission process is via the droplets of moisture contained in the air exhaled by people when they breathe or talk. The more rigorous the level of activity is, the more concentrated these exhalations become.

Continue reading Addressing COVID-19 with your HVAC System