Question 470General Subjects - Assistant Engineer70% to pass
In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the winter outside air duct thermostat? Illustration GS-RA-42
AI Explanation
The correct answer is A.
During the heating season, the winter thermostat senses the outside air temperature and closes the exhaust and outside air dampers when the outside air temperature is significantly lower than typical indoor air temperatures. This is the correct functioning of the winter outside air duct thermostat in the illustrated terminal reheat multiple zone system. The purpose is to minimize the amount of cold outside air being introduced into the building, which would require more energy to heat the air to the desired indoor temperature.
The other options are incorrect because they do not accurately describe the function of the winter thermostat in this system. The thermostat is designed to monitor the outside air temperature, not the indoor air temperature, and it closes the dampers to reduce cold air intake, not open them.
Related Questions
#468 In the illustrated single zone HVAC system, what statement represents the functioning of the diverting relay as it controls the cooling coil flow and the exhaust, outside air and recirculation dampers? Illustration GS-RA-09 #469 In the illustrated single zone HVAC system, what statement represents the relationship between the exhaust, outside air and recirculation dampers? Illustration GS-RA-09 #471 In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the summer outside air duct thermostat? Illustration GS-RA-42 #472 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? Illustration GS-RA-42 #473 Referring to the illustrated single zone HVAC system diagram, what statement is true concerning the damper controls? Illustration GS-RA-09