In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the supply air duct thermostats controlling the preheater steam flow and the cooling coil chilled water flow? GS-RA-42 Illustration GS-RA-42: the U.S. Coast Guard has not released this illustration.

Correct Answer: Option A — The thermostat controlling the preheater steam flow is set several degrees lower than the design cooling coil off-coil temperature to prevent simultaneous flows.

Under USCG National Maritime Center examination standards, the accepted correct answer is: The thermostat controlling the preheater steam flow is set several degrees lower than the design cooling coil off-coil temperature to prevent simultaneous flows..