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
Trades & Technology
You might also like to view...
What are the concerns in healthcare structures?
What will be an ideal response?
Trades & Technology
Plastic gloves and safety glasses should always be worn when working with:
What will be an ideal response?
Trades & Technology
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
Trades & Technology
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
Trades & Technology