In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the summer outside air duct thermostat? GS-RA-42 Illustration GS-RA-42: the U.S. Coast Guard has not released this illustration.

Correct Answer: Option C — During the cooling season, the summer thermostat senses the outside air temperature and closes the exhaust and outside air dampers when the outside air temperature is significantly higher than typical indoor air temperatures.

During the cooling season, the summer thermostat monitors outside air temperature. When outside temperatures are excessively high, the system closes the outside air and exhaust dampers to minimize the thermal load on the cooling coils, switching to full recirculation to maintain interior comfort efficiently without processing extreme outdoor ambient heat.