Massachusetts Oil burner Exam
Questions With Correct Answers 2025
Marking Scheme(A+ Pass)
The cross connection between two supply tanks shall not exceed? - Answer - ✔ 660
gallons
When is an automatic draft control not required? - Answer - ✔ When the equipment is
designed to control the draft.
Combustion performance testing can indicate: - Answer - ✔ Improper air oil mixture, too
much combustion air, and low pump pressure.
If a second oil-burning appliance is installed in a single chimney, you must insure: -
Answer - ✔ Sufficient draft is available for safe operation of all connected equipment.
Delayed ignition can be caused by: - Answer - ✔ Weak ignition transformer
You should replace the oil burner nozzle with: - Answer - ✔ The manufacturers
recommended nozzle spray pattern and spray angle.
Viscosity problems can be corrected by: - Answer - ✔ Decreasing the nozzle size and
increasing the pump pressure accordingly
The minimum operating pressure of an oil pump is: - Answer - ✔ 100 PSI
If a stack relay fails you, must? - Answer - ✔ Replace it with an approved type controller
Aquastats are normally found on what type of heating systems? - Answer - ✔ Hydronic
Airstats are found on what type of heating systems? - Answer - ✔ Forced warm air
systems
Under sized returns on a warm air system can result in what? - Answer - ✔ Short
cycling of the oil burner
Incorrect nozzle selection in regards to gallon per hour, can result in what problems in a
steam system? - Answer - ✔ Some radiators not heating quickly enough
Low boiler water temperature in a hydronic hot water system may be caused by? -
Answer - ✔ Undersized oil burner nozzles
Questions With Correct Answers 2025
Marking Scheme(A+ Pass)
The cross connection between two supply tanks shall not exceed? - Answer - ✔ 660
gallons
When is an automatic draft control not required? - Answer - ✔ When the equipment is
designed to control the draft.
Combustion performance testing can indicate: - Answer - ✔ Improper air oil mixture, too
much combustion air, and low pump pressure.
If a second oil-burning appliance is installed in a single chimney, you must insure: -
Answer - ✔ Sufficient draft is available for safe operation of all connected equipment.
Delayed ignition can be caused by: - Answer - ✔ Weak ignition transformer
You should replace the oil burner nozzle with: - Answer - ✔ The manufacturers
recommended nozzle spray pattern and spray angle.
Viscosity problems can be corrected by: - Answer - ✔ Decreasing the nozzle size and
increasing the pump pressure accordingly
The minimum operating pressure of an oil pump is: - Answer - ✔ 100 PSI
If a stack relay fails you, must? - Answer - ✔ Replace it with an approved type controller
Aquastats are normally found on what type of heating systems? - Answer - ✔ Hydronic
Airstats are found on what type of heating systems? - Answer - ✔ Forced warm air
systems
Under sized returns on a warm air system can result in what? - Answer - ✔ Short
cycling of the oil burner
Incorrect nozzle selection in regards to gallon per hour, can result in what problems in a
steam system? - Answer - ✔ Some radiators not heating quickly enough
Low boiler water temperature in a hydronic hot water system may be caused by? -
Answer - ✔ Undersized oil burner nozzles
