The Setpoint is typically described as what?

• A. The target temperature the control system aims to maintain.
• B. The actual measured temperature at any moment.
• C. The outdoor air temperature.
• D. The allowable temperature range.

Answer: (A)

The Setpoint is the target temperature the control system aims to maintain. In a building HVAC setup, the setpoint is the temperature you set in the thermostat or BAS—the desired indoor condition. The system constantly measures the current temperature and compares it to this target, generating an error signal to decide whether to heat or cool to bring the space toward the target. The actual measured temperature is the process variable, not the setpoint. Outdoor air temperature is an external influence, not the internal target. The allowable temperature range describes tolerance around the setpoint (how far the system may drift before action is taken), not the setpoint itself. So, the setpoint is best described as the target temperature the system strives to maintain.