Question 468General Subjects - Assistant Engineer70% to pass
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
AI Explanation
The correct answer is B.
The diverting relay in the HVAC system processes the room thermostat control signal as long as the space humidity is below the humidistat set point. If the space humidity exceeds the humidistat set point, the diverting relay will then process the room humidistat control signal instead.
This is because the primary function of the diverting relay is to prioritize temperature control over humidity control. As long as the humidity is within the desired range, the system focuses on maintaining the temperature setpoint. However, if the humidity rises above the setpoint, the diverting relay shifts to control the humidity, overriding the temperature control.
The other options are incorrect because they do not accurately describe the prioritization of temperature and humidity control by the diverting relay in this type of HVAC system.
Related Questions
#466 What type of HVAC system is characterized by having control dampers in locations other than the outside air supply, outside air exhaust, and recirculation damper applications? #467 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 #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 #470 In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the winter outside air duct thermostat? Illustration GS-RA-42 #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