NORA Oil Heat Exam Review Questions

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NORA Oil Heat Exam Review Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

What should be done after an oil burner runs out of fuel?

• Increase the draft in the chimney

✔✔B. Bleed the fuel line to remove trapped air

• Adjust the barometric damper
• Replace the burner motor

What component detects the presence of a flame in an oil burner?

• High-limit switch
• Barometric damper

✔✔C. Cad cell

• Heat exchanger

What is the function of a barometric damper in a venting system?

• To reduce burner noise
• To clean combustion gases 1 / 3

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✔✔C. To regulate draft and improve combustion efficiency

• To control fuel flow

What color should a properly adjusted oil burner flame be?

• Blue with white edges
• Dark orange with visible smoke

✔✔C. Bright yellow-white with minimal smoke

• Red with flickering black soot

What can cause excessive soot buildup in an oil-fired heating system?

• High-quality fuel oil

✔✔B. Incorrect air-to-fuel ratio

• A properly sized burner nozzle
• A new air filter

Why should an oil filter be replaced regularly?

• To reduce noise from the burner

✔✔B. To prevent clogs and maintain steady fuel flow 2 / 3

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• To improve the draft in the chimney
• To decrease combustion air

What happens if a nozzle becomes clogged in an oil burner?

• The burner will shut down immediately

✔✔B. The flame will become unstable, leading to poor combustion

• The burner will produce more heat
• The draft will automatically increase

Which safety device shuts off the oil supply if a flame is not detected?

• High-limit switch

✔✔B. Primary control

• Transformer
• Aquastat

Why is preheating oil necessary in extremely cold climates?

• To increase fuel pressure
• To burn the fuel at a higher temperature
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