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P-99 / LOW PSI OIL BURNER OPERATOR
2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Where is fuel-oil stored? - correct answer-Storage tank.
Which valve stops oil flow so that cleaning and maintenance
can be performed? - correct answer-Shut-off valve.
What separates dirt and sediment from the fuel oil coming from
the storage tank? - correct answer-Strainer/filter.
Which device indicates whether there is an obstruction in the
suction line? - correct answer-Vacuum gauge.
What raises the oil temperature for easier pumping and
atomization? - correct answer-Pre-heater.
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Which valve is electrically operated and will open or close the
line leading to the atomizer? - correct answer-Main fuel valve.
Which burner valve is located as close as possible to the
burner to reduce the amount of oil remaining in the line after an
emergency shut down? - correct answer-Shut-off valve.
The atomizing cup/spinner is a device that breaks up fuel oil for
proper ____. - correct answer-Combustion.
Which low pressure control is mounted on the fan housing and
will shut the oil burner down if no air exists for combustion? -
correct answer-Vaporstat.
A dangerous condition occurs when oil pumped to the
combustion chamber is not properly ____. - correct answer-
Atomized.
The mixture of fuel oil and air is initially ignited by a gas pilot or
electric ignition. After ignition, combustion is maintained in the
combustion chamber by what? - correct answer-Retained heat.
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What is a photoelectric cell? - correct answer-A flame detection
control device.
Which device will shut down an oil
burner if a flame is not visible? - correct answer-Photoelectric
cell.
What operates the oil burner in the summer for domestic hot
water needs? - correct answer-Aquastat.
Which automatic, electric control for steam boilers will shut the
burner down when the water is below a safe operating point? -
correct answer-Low water cut-off.
Which device indicates the water level of a steam boiler? -
correct answer-Gauge glass.
What should be visible in the gauge glass while the boiler
operates? - correct answer-Water.
P-99 / LOW PSI OIL BURNER OPERATOR
2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Where is fuel-oil stored? - correct answer-Storage tank.
Which valve stops oil flow so that cleaning and maintenance
can be performed? - correct answer-Shut-off valve.
What separates dirt and sediment from the fuel oil coming from
the storage tank? - correct answer-Strainer/filter.
Which device indicates whether there is an obstruction in the
suction line? - correct answer-Vacuum gauge.
What raises the oil temperature for easier pumping and
atomization? - correct answer-Pre-heater.
, Page | 2
Which valve is electrically operated and will open or close the
line leading to the atomizer? - correct answer-Main fuel valve.
Which burner valve is located as close as possible to the
burner to reduce the amount of oil remaining in the line after an
emergency shut down? - correct answer-Shut-off valve.
The atomizing cup/spinner is a device that breaks up fuel oil for
proper ____. - correct answer-Combustion.
Which low pressure control is mounted on the fan housing and
will shut the oil burner down if no air exists for combustion? -
correct answer-Vaporstat.
A dangerous condition occurs when oil pumped to the
combustion chamber is not properly ____. - correct answer-
Atomized.
The mixture of fuel oil and air is initially ignited by a gas pilot or
electric ignition. After ignition, combustion is maintained in the
combustion chamber by what? - correct answer-Retained heat.
, Page | 3
What is a photoelectric cell? - correct answer-A flame detection
control device.
Which device will shut down an oil
burner if a flame is not visible? - correct answer-Photoelectric
cell.
What operates the oil burner in the summer for domestic hot
water needs? - correct answer-Aquastat.
Which automatic, electric control for steam boilers will shut the
burner down when the water is below a safe operating point? -
correct answer-Low water cut-off.
Which device indicates the water level of a steam boiler? -
correct answer-Gauge glass.
What should be visible in the gauge glass while the boiler
operates? - correct answer-Water.
