Oil Heat Mechanical: Week 1 Questions

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Oil Heat Mechanical: Week 1 Questions

and Answers | Latest Version | 2025/2026 | Correct & Verified

What is the primary function of a combustion chamber in an oil heating system?

• To store excess fuel

✔✔B. To provide a space for fuel and air to mix and burn efficiently

• To cool the burner nozzle
• To filter impurities from the oil

What component in an oil burner atomizes the fuel for combustion?

• The heat exchanger

✔✔B. The nozzle

• The oil pump
• The combustion chamber

Why is preheating fuel oil necessary in some systems?

• To prevent clogging in the fuel line
• To increase fuel pressure 1 / 3

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✔✔C. To improve atomization and combustion efficiency

• To reduce burner noise

What does a cad cell in an oil burner system detect?

• Air temperature

✔✔B. The presence of a flame

• Oil pressure
• Combustion chamber temperature

What is the purpose of a barometric damper in an oil heating system?✔✔A. To regulate draft and improve combustion efficiency

• To increase burner pressure
• To control fuel flow
• To prevent soot buildup in the chimney

Which factor affects the viscosity of fuel oil the most?

• Air pressure

✔✔B. Temperature 2 / 3

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• Burner size
• Flame color

What is the typical operating pressure of a residential oil burner pump?

A. 50-70 PSI

B. 100-120 PSI

✔✔C. 100-150 PSI

D. 200-250 PSI

What happens if the electrodes in an oil burner are misaligned?

• The burner runs too hot

✔✔B. Ignition may fail or become unreliable

• The flame becomes too large
• The oil pressure drops

What is the function of the primary control in an oil heating system?

• To regulate oil flow
• To maintain oil temperature
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