Referring to illustrated diagram, what type of HVAC system is shown? GS-RA-43

Illustration GS-RA-43: the U.S. Coast Guard has not released this illustration.

Question

Referring to illustrated diagram, what type of HVAC system is shown? GS-RA-43

Illustration GS-RA-43: the U.S. Coast Guard has not released this illustration.

Accepted Answer

Option C: A dual duct system. A dual duct HVAC system utilizes separate hot and cold air supply ducts running in parallel from a central equipment station. Thermostatically controlled mixing units at individual zones blend these two distinct airstreams to achieve the desired precise space temperature control.