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Is it necessary to provide separate ventilation openings for combustion air and natural ventilation?

April 26, 2017air combustion natural necessary Openings separate Ventilation

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Is it necessary to provide separate ventilation openings for combustion air and natural ventilation?

1 Answer

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10 Posted

A. No. If it was determined that 10 square inches of intake and 10 square inches of exhaust opening was necessary for natural ventilation (20 square inches total), and 24 square inches was needed for combustion air, two 12 square inch openings would satisfy both requirements.