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

A dry-bulb economizer on a packaged rooftop unit is intended to:

Replace the need for a compressor high-pressure switch Heat outdoor air with refrigerant hot gas year-round Always keep the outdoor damper fully closed during occupied hours Use cool outdoor air to provide free cooling when outdoor conditions can meet the space load

Correct Answer:

Use cool outdoor air to provide free cooling when outdoor conditions can meet the space load

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