What type of HVAC system is characterized by having control dampers in locations other than the outside air supply, outside air exhaust, and recirculation damper applications?
Official USCG Answer & Rule Citation
Correct Answer: Option D — A variable air volume system
Variable air volume systems regulate airflow dynamically through zone-level control dampers located in distribution ductwork, unlike constant volume systems. This method modulates air quantity rather than supply temperature to meet changing thermal loads across shipboard accommodations.
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