Safety & CodesQuestion 106 of 110
Adequate ventilation air in occupied buildings is important because it does what?
a.Increases refrigerant charge
b.Reduces duct static pressure
c.Provides fresh outdoor air to dilute indoor contaminants and maintain air quality
d.Lowers the SEER rating
Explanation
Ventilation introduces outdoor air to dilute odors, carbon dioxide, and other indoor contaminants, maintaining acceptable indoor air quality. The CMC and related standards set minimum ventilation rates for occupancies. Balancing ventilation with energy use is part of good system design.
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