SC Air Conditioning Practice Questions - South Carolina Air Conditioning Contractor Examination Exam

In a pressure-independent VAV system, each VAV box typically maintains its airflow setpoint by:

Closing the return damper in that room Changing the refrigerant metering device at each diffuser Cycling the rooftop compressor on a 24-volt space thermostat only Modulating the box damper using a flow sensor so actual cfm matches the thermostat demand

Correct Answer:

Modulating the box damper using a flow sensor so actual cfm matches the thermostat demand

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