Chapter 3 Questions with Correct Answers
Appliances installed in pits shall have the excavation held back how much? - CORRECT ANSWER
-12 in
Openings for outdoor combustion air shall be not less than how much? - CORRECT ANSWER -3
in
When using two permanent openings for outdoor combustion air supply the openings shall be
commenced within how much of the bottom and top of the enclosure? - CORRECT ANSWER -12
in
When using one permanent openings for outdoor combustion air supply the appliance shall
have a clearance of how much on the sides and back? - CORRECT ANSWER -1 in
Screens for louvers and grilles shall have a mesh size not smaller than how much? - CORRECT
ANSWER -1/4 in
Ducts shall not be screened when exiting in what kind of space? - CORRECT ANSWER -Attic
Permanent ladders for servicing equipment on roofs shall have a side railing extending not less
than how much above the parapet or roof? - CORRECT ANSWER -30 in
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6Win
WhatWslopeWshallWcondensateWdisposalWpipingWmaintain?W-WCORRECTWANSWERW-
1WpercentWslope