Question 215General Subjects - 1st Asst/Chief70% to pass
In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the summer outside air duct thermostat? Illustration GS-RA-42
AI Explanation
The correct answer is 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.
This is correct because the purpose of the summer outside air duct thermostat is to minimize the amount of hot outside air being brought into the building during the cooling season. When the outside air temperature is higher than the desired indoor temperature, the thermostat will close the dampers to reduce the amount of hot outside air entering the system, which helps maintain the desired cooling effect.
The other options are incorrect because they either describe the opposite function (opening the dampers instead of closing them) or refer to the inside air temperature instead of the outside air temperature, which is not the role of the summer outside air duct thermostat.
Related Questions
#213 To prevent damage to dry cargoes, the cargo hold ventilation and dehumidification systems play a key role. In terms of the maintained dew point, what statement is true? #214 With regard to the cooling and heating coils and humidification and regeneration chambers of a liquid cargo-hold dehumidification system, what statement is true? #216 Referring to the illustrated dual duct multiple zone HVAC system, how is the space temperature directly controlled? Illustration GS-RA-43 #217 Referring to the illustrated single zone HVAC system diagram, what statement is true concerning the damper controls? Illustration GS-RA-09#219 In the illustrated single zone HVAC system, what prevents the simultaneous flow of steam through the preheat coil and flow of chilled water through the cooling coil? Illustration GS-RA-09