HVAC Excellence Master LC-AC Practice Questions - HVAC Excellence Master Specialist - Light Commercial Air Conditioning (Written Examination) Exam

On a packaged rooftop unit with an economizer, what condition allows the economizer to provide 'free cooling'?

Outdoor air is suitable (cool/dry enough) to satisfy cooling without running compressors The supply fan is de-energized Return-air temperature exceeds the high-limit The condenser fan has failed

Correct Answer:

Outdoor air is suitable (cool/dry enough) to satisfy cooling without running compressors

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