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

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If all combustion air is supplied by a mechanical system, IFGC 304.9 requires outdoor air at not less than 0.35 cfm per 1,000 Btu/h of appliance input. For a 120,000 Btu/h furnace this is:

12 cfm 24 cfm 42 cfm 120 cfm

Correct Answer:

42 cfm

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