What size should the combustion air openings be for a room with an 80,000 BTU/hr input furnace and a 35,000 BTU/hr water heater if the openings are opening directly into a ventilated attic and a ventilated crawlspace?
A) 115,000 / 1,000 = 115 square inches free area each
B) 115,000 / 2,000 = 57.5 square inches free area each
C) 115,000 / 4,000 = 28.75 square inches free area each
D) The size is irrelevant so long as there are combustion air vents
C
You might also like to view...
What are the concerns in healthcare structures?
What will be an ideal response?
Plastic gloves and safety glasses should always be worn when working with:
What will be an ideal response?
Most jurisdictions require permits and code inspections for any construction, plumbing, electrical, or mechanical work exceeding ________ in cost
A) $500 B) $300 C) $1,500 D) $1,000
The fitting at the end of a round duct that connects the duct to the floor register is called a(n) ____.
A. end boot B. reducer C. take off D. stack head