MASSACHUSETTS OIL BURNER PRACTICE
FINAL STUDY GUIDE 2026 QUESTIONS
WITH ANSWERS GRADED A+
⩥ 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
⩥ Delayed opening oil valves are used to? Answer: Allow oil pump to
come up to speed
FINAL STUDY GUIDE 2026 QUESTIONS
WITH ANSWERS GRADED A+
⩥ 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
⩥ Delayed opening oil valves are used to? Answer: Allow oil pump to
come up to speed
