46. There is a new forced air furnace equipped wit...

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Gas Fitter 2 Practice Test

Question Number 235

46. There is a new forced air furnace equipped with an induced draft fan beside a conventional water heater in a basement. The customer has decided to enclose the area to make a separate furnace room. The house is approximately 25 years old and has a door separating the basement from the upper levels. Furnace input is 100,000Btuh with AWH input of 25,000 Btuh. The enclosure is 10ft x 20ft x 7ft. The structure dimensions are 20ft x 30ft x 7ft x 3 levels. What size opening will be required in the furnace room door for combustion air?

a) 0 square inches

b) 9 square inches

c) 18 square inches

d) 125 square inches

✔ Correct Answer:

d) 125 square inches

Gas Fitter 2 Practice Test

Question Number 235

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