NATE Gas Heating Exam/ Questions with Verified Answers
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Course
NATE Gas Heating
Institution
NATE Gas Heating
NATE Gas Heating Exam/ Questions with Verified Answers. Terms like:
A yellow burner flame is usually caused by:
A: A weak ignitor
B: Lack of sufficient air
C: Low gas pressure
D: Too much primary air - Answer: B: Lack of sufficient air
A lifting burner flame is usually caused...
NATE Gas Heating Exam/ Questions with
Verified Answers.
A yellow burner flame is usually caused by:
A: A weak ignitor
B: Lack of sufficient air
C: Low gas pressure
D: Too much primary air - Answer: B: Lack of sufficient air
A lifting burner flame is usually caused by:
,Page 2 of 23
A: A new ignitor that has not been broken in
B: High gas pressure and/or too much primary air
C: Low gas pressure and/or not enough primary air
D: Blockage in the flue - Answer: B: High gas pressure and/or too much primary
air
What is the purpose of "timing a gas meter"?
A: To determine the actual input in Btuh of the furnace
B: To determine if the gas meter is accurate
C: To check the output of the gas valve
D: To test for carbon monoxide - Answer: A: To determine the actual input in Btuh
of the furnace
Electrical troubleshooting of a furnace is best accomplished with a:
A: Pictorial wiring diagram
B: Photographs
, Page 3 of 23
C: Voltmeter
D: Both a and c - Answer: D: Both a and c
Since 1992, the United States Department of Energy has required that all furnaces
sold and installed from that date on must have an AFUE of no less than:
A: 70%
B: 75%
C: 78%
D: 80% - Answer: C: 78%
Many pre-1992 furnaces have efficiencies around _______.
A: 10%
B: 40%
C: 60%
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