SC Heating Practice Questions - South Carolina Heating Contractor Examination Exam

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The IFGC 304.6.2 one-permanent-opening outdoor combustion-air method requires the opening to commence within 12 inches of the top of the enclosure and to have a free area of not less than which amount?

1 square inch per 2,000 Btu/h only 1 square inch per 3,000 Btu/h of total input, and not less than the sum of the vent-connector areas in the space 1 square inch per 4,000 Btu/h with no connector-area check 50 square inches regardless of input

Correct Answer:

1 square inch per 3,000 Btu/h of total input, and not less than the sum of the vent-connector areas in the space

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