MASSACHUSETTS OIL BURNER
PRACTICE EXAM 2025 QUESTIONS AND
ANSWERS
The cross connection between two supply tanks shall not exceed? - ANS 660 gallons
When is an automatic draft control not required? - ANS When the equipment is designed to
control the draft.
Combustion performance testing can indicate: - ANS 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: -
ANS Sufficient draft is available for safe operation of all connected equipment.
Delayed ignition can be caused by: - ANS Weak ignition transformer
You should replace the oil burner nozzle with: - ANS The manufacturers recommended
nozzle spray pattern and spray angle.
Viscosity problems can be corrected by: - ANS Decreasing the nozzle size and increasing the
pump pressure accordingly
1
Page
@COPYRIGHT @THEBRIGHT 2025/2026
, The minimum operating pressure of an oil pump is: - ANS 100 PSI
If a stack relay fails you, must? - ANS Replace it with an approved type controller
Aquastats are normally found on what type of heating systems? - ANS Hydronic
Airstats are found on what type of heating systems? - ANS Forced warm air systems
Under sized returns on a warm air system can result in what? - ANS Short cycling of the oil
burner
Incorrect nozzle selection in regards to gallon per hour, can result in what problems in a steam
system? - ANS Some radiators not heating quickly enough
Low boiler water temperature in a hydronic hot water system may be caused by? -
ANS Undersized oil burner nozzles
Delayed opening oil valves are used to? - ANS Allow oil pump to come up to speed
If a steam boiler is to be installed with an automatic feeder it must also have: - ANS A
backflow prevention device
How can a damaged heat exchanger be detected on a forced warm air system? - ANS With a
smoke trace candle
If a high limit is installed to prevent high boiler water temperature, what is the function of the
low limit? - ANS To maintain temperature for domestic hot water
2
Page
@COPYRIGHT @THEBRIGHT 2025/2026
PRACTICE EXAM 2025 QUESTIONS AND
ANSWERS
The cross connection between two supply tanks shall not exceed? - ANS 660 gallons
When is an automatic draft control not required? - ANS When the equipment is designed to
control the draft.
Combustion performance testing can indicate: - ANS 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: -
ANS Sufficient draft is available for safe operation of all connected equipment.
Delayed ignition can be caused by: - ANS Weak ignition transformer
You should replace the oil burner nozzle with: - ANS The manufacturers recommended
nozzle spray pattern and spray angle.
Viscosity problems can be corrected by: - ANS Decreasing the nozzle size and increasing the
pump pressure accordingly
1
Page
@COPYRIGHT @THEBRIGHT 2025/2026
, The minimum operating pressure of an oil pump is: - ANS 100 PSI
If a stack relay fails you, must? - ANS Replace it with an approved type controller
Aquastats are normally found on what type of heating systems? - ANS Hydronic
Airstats are found on what type of heating systems? - ANS Forced warm air systems
Under sized returns on a warm air system can result in what? - ANS Short cycling of the oil
burner
Incorrect nozzle selection in regards to gallon per hour, can result in what problems in a steam
system? - ANS Some radiators not heating quickly enough
Low boiler water temperature in a hydronic hot water system may be caused by? -
ANS Undersized oil burner nozzles
Delayed opening oil valves are used to? - ANS Allow oil pump to come up to speed
If a steam boiler is to be installed with an automatic feeder it must also have: - ANS A
backflow prevention device
How can a damaged heat exchanger be detected on a forced warm air system? - ANS With a
smoke trace candle
If a high limit is installed to prevent high boiler water temperature, what is the function of the
low limit? - ANS To maintain temperature for domestic hot water
2
Page
@COPYRIGHT @THEBRIGHT 2025/2026
