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NHIE Prep - HVAC Actual Questions and Correct Answers

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NHIE Prep - HVAC Actual Questions and Correct Answers

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NHIE Prep - HVAC Actual Questions and Correct Answers



Q1
Vents must terminate a minimum of 2 feet above and
Answer: feet horizontal to a window or other opening. 10



Q2
A gas appliance vent through a roof requires a minimum clearance of
Answer: feet. 2



Q3
Return air must be >
Answer: feet from fireplace, a vent, or mixing hood. 10



Q4
All duct joints must be taped with UL
Answer: tape. 181



Q5
Suspended ducts must be suspended with
Answer: inch wide strap every feet or less. 1 1/2, 4



Q6
Minimum R
Answer: insulation on interior, and a minimum R on the exterior. 5, 8



Q7
1-inch fiberglass batt equals R
Answer: 2



Q8
Combustion (supply) air openings to outside must be at least
Answer: inches above grade. 12

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