Question 205General Subjects - 1st Asst/Chief

The correct answer is D) A variable air volume system. In a variable air volume (VAV) system, the control dampers are located in various locations throughout the system, not just in the outside air supply, outside air exhaust, and recirculation damper applications. This allows the VAV system to adjust the airflow to different zones based on their individual heating or cooling needs, rather than supplying a constant volume of air like a single zone system. The other options are incorrect because they do not have control dampers in locations other than the outside air supply, outside air exhaust, and recirculation damper applications. A terminal reheat system (A) and a dual duct system (B) have a more limited distribution of control dampers, while a single zone system (C) has a constant volume of air supplied to the entire space.