If a burner rated at 1.25 gph is installed in an enclosure with two combustion air openings, each 175 square inches free area, what is the total free area?

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Multiple Choice

If a burner rated at 1.25 gph is installed in an enclosure with two combustion air openings, each 175 square inches free area, what is the total free area?

Explanation:
Total free area is the sum of all openings’ free areas. With two openings each providing 175 square inches, you add them together: 175 + 175 = 350 square inches. The burner’s rating of 1.25 gph isn’t needed for this calculation; it’s information that can influence air requirements in other contexts, but the arithmetic here is simply additive. So the total free area is 350 square inches.

Total free area is the sum of all openings’ free areas. With two openings each providing 175 square inches, you add them together: 175 + 175 = 350 square inches. The burner’s rating of 1.25 gph isn’t needed for this calculation; it’s information that can influence air requirements in other contexts, but the arithmetic here is simply additive. So the total free area is 350 square inches.

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