Oil Burner License Exam 2023 Questions and Answers
What is the first thing a tech should do when arriving at a no combustion call? -
AnswerAsk how many times the customer reset the unit.
.What is the best long term solution for preventing a clogged nozzle? - Answer-Remove
any underground storage tanks.
-Install a quality oil filter.
-Cut the suction line 10" above the tank outlet to prevent sludge.
.Hot water and steam valves are interchangeable. - AnswerFalse
.When in the presence of a flame, a cad cell normally reads.. - Answer300-1000 ohms
.If a pump is used to bring oil to a level higher than the tank, an oil safety valve is
required. - AnswerTrue
.On a call where a hydronic heat system is putting out too much heat on the stack, the
issue may be.. - Answer-Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
.A high CO2 reading is caused by.. - AnswerIncomplete combustion
.An often overlooked cause of a high CO2 reading is.. - AnswerNot enough combustion
air in the equipment room.
.When multiple pumps are wired together in a heating system, they should be wired in..
- Answerparallel
.In a series circuit.. - AnswerCurrent has one path.
.When 2 burners are connected to the same chimney.. - AnswerSufficient draft must be
obtained to operate both units.
.The ignition transformer is located.. - AnswerIn the primary control.
.When safeties are wired in series one safety will affect the operation of the others. -
AnswerTrue
.A stack switch is no longer allowed to be installed or replaced because.. - AnswerIt's
safety cutout time is higher than what is now required.
.What is a power venter and what does it do? - AnswerAn electrical device that sends
fluid gases into the chimney connector.
,.A burner in a confined space using 1 GPH of #2 fuel oil requires what size permanent
opening for combustion air? - Answer140"
.The difference between an adjustable flame retention burner and a fixed flame
retention burner is? - AnswerAir inlets can be adjusted
Ignitor position can be adjusted
Fuel can be adjusted
.Oil tank design, construction, installation and testing shall be in accordance with.. -
Answer527 CMR 9.0
.Heat is a form of.. - AnswerEnergy
.If a burner is operational but the circulator pump isn't running.. - AnswerThe pump relay
is not working correctly
.A method of dealing with low viscosity/cold temps with #2 oil? - AnswerIncrease pump
pressure/ decrease nozzle size
.What is needed at the outlet of an oil tank? - AnswerThermal safety valve
.Where do you obtain an installation permit for oil burners? - AnswerFire Dept
.How many Btu's approximately in 1 gal of #2 fuel oil? - Answer140,000 btu's
.Solid state ignition is superior to spark because - AnswerIt is not affected by reduced
voltage
.What is an installation? - AnswerThe complete setting in place, ready for operation, of
an oil burner appliance together with its accessories and equipment.
.How far must a power vent terminate from an opening or window? - Answer4'
.A pump in a one pipe system that is full of air can be self purged. - AnswerFalse
.List the minimum size of an oil supply line. - Answer3/8"
.A material with electrons so loose it allows voltage to pass with little or no resistance.. -
AnswerIs a conductor
.If a high limit goes off, what does a low water switch do? - AnswerMaintains water
temperature
, .What is flashpoint an indicator of? - AnswerMinimum temperature oil will ignite but not
continue to burn.
.What travels on the inside of the wire? - AnswerVolts
.What does readily accessible mean pertaining to oil burning equipment? -
AnswerCapable of being reached easily and quickly for operation, maintenance or
inspection.
.What is the minimum vent pipe on an oil tank? - Answer1 1/4"
.What causes corrosion on a flue pipe? - AnswerWhen the flue pipe is operating below
the dew point temperature.
.What are the methods to prevent oil waxing? - AnswerPut additives in the fuel.
Add an oil line heater.
Cut with #1 fuel or kerosene.
.What is the maximum tank size allowed inside unenclosed? - Answer660 gal
.What is the purpose of a delayed oil valve? - AnswerAllows time for the oil pump to get
up to speed.
Delays oil flow to the nozzle.
.On a call where a hydronic heat system is putting out too much heat, the issue could
be? - AnswerA shorted out thermostat.
.When measuring a cad cell with the burner running and the ff terminals jumped out,
what should the cad cell reading be? - Answer1600 ohms
.What are the possible causes of soot at or near the power venter? - AnswerIncomplete
combustion
.What is a possible side effect of air in a nozzle line? - AnswerSoot
.What is the cause if the cad cell is tripped on safety? - AnswerDirty cad cell
Faulty cad cell
No flame present
.If a boiler is running but the water temperature is low? - AnswerUndersized nozzle
What is the first thing a tech should do when arriving at a no combustion call? -
AnswerAsk how many times the customer reset the unit.
.What is the best long term solution for preventing a clogged nozzle? - Answer-Remove
any underground storage tanks.
-Install a quality oil filter.
-Cut the suction line 10" above the tank outlet to prevent sludge.
.Hot water and steam valves are interchangeable. - AnswerFalse
.When in the presence of a flame, a cad cell normally reads.. - Answer300-1000 ohms
.If a pump is used to bring oil to a level higher than the tank, an oil safety valve is
required. - AnswerTrue
.On a call where a hydronic heat system is putting out too much heat on the stack, the
issue may be.. - Answer-Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
.A high CO2 reading is caused by.. - AnswerIncomplete combustion
.An often overlooked cause of a high CO2 reading is.. - AnswerNot enough combustion
air in the equipment room.
.When multiple pumps are wired together in a heating system, they should be wired in..
- Answerparallel
.In a series circuit.. - AnswerCurrent has one path.
.When 2 burners are connected to the same chimney.. - AnswerSufficient draft must be
obtained to operate both units.
.The ignition transformer is located.. - AnswerIn the primary control.
.When safeties are wired in series one safety will affect the operation of the others. -
AnswerTrue
.A stack switch is no longer allowed to be installed or replaced because.. - AnswerIt's
safety cutout time is higher than what is now required.
.What is a power venter and what does it do? - AnswerAn electrical device that sends
fluid gases into the chimney connector.
,.A burner in a confined space using 1 GPH of #2 fuel oil requires what size permanent
opening for combustion air? - Answer140"
.The difference between an adjustable flame retention burner and a fixed flame
retention burner is? - AnswerAir inlets can be adjusted
Ignitor position can be adjusted
Fuel can be adjusted
.Oil tank design, construction, installation and testing shall be in accordance with.. -
Answer527 CMR 9.0
.Heat is a form of.. - AnswerEnergy
.If a burner is operational but the circulator pump isn't running.. - AnswerThe pump relay
is not working correctly
.A method of dealing with low viscosity/cold temps with #2 oil? - AnswerIncrease pump
pressure/ decrease nozzle size
.What is needed at the outlet of an oil tank? - AnswerThermal safety valve
.Where do you obtain an installation permit for oil burners? - AnswerFire Dept
.How many Btu's approximately in 1 gal of #2 fuel oil? - Answer140,000 btu's
.Solid state ignition is superior to spark because - AnswerIt is not affected by reduced
voltage
.What is an installation? - AnswerThe complete setting in place, ready for operation, of
an oil burner appliance together with its accessories and equipment.
.How far must a power vent terminate from an opening or window? - Answer4'
.A pump in a one pipe system that is full of air can be self purged. - AnswerFalse
.List the minimum size of an oil supply line. - Answer3/8"
.A material with electrons so loose it allows voltage to pass with little or no resistance.. -
AnswerIs a conductor
.If a high limit goes off, what does a low water switch do? - AnswerMaintains water
temperature
, .What is flashpoint an indicator of? - AnswerMinimum temperature oil will ignite but not
continue to burn.
.What travels on the inside of the wire? - AnswerVolts
.What does readily accessible mean pertaining to oil burning equipment? -
AnswerCapable of being reached easily and quickly for operation, maintenance or
inspection.
.What is the minimum vent pipe on an oil tank? - Answer1 1/4"
.What causes corrosion on a flue pipe? - AnswerWhen the flue pipe is operating below
the dew point temperature.
.What are the methods to prevent oil waxing? - AnswerPut additives in the fuel.
Add an oil line heater.
Cut with #1 fuel or kerosene.
.What is the maximum tank size allowed inside unenclosed? - Answer660 gal
.What is the purpose of a delayed oil valve? - AnswerAllows time for the oil pump to get
up to speed.
Delays oil flow to the nozzle.
.On a call where a hydronic heat system is putting out too much heat, the issue could
be? - AnswerA shorted out thermostat.
.When measuring a cad cell with the burner running and the ff terminals jumped out,
what should the cad cell reading be? - Answer1600 ohms
.What are the possible causes of soot at or near the power venter? - AnswerIncomplete
combustion
.What is a possible side effect of air in a nozzle line? - AnswerSoot
.What is the cause if the cad cell is tripped on safety? - AnswerDirty cad cell
Faulty cad cell
No flame present
.If a boiler is running but the water temperature is low? - AnswerUndersized nozzle
