Oil Burner License Exam
2023/251 Questions and Correct
Solutions/ A+
Rated
What is the first thing a tech should do when arriving at a no
combustion call? - -Ask how many times the customer reset the unit.
-What is the best long term solution for preventing a clogged nozzle? -
--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. - -False
-When in the presence of a flame, a cad cell normally reads.. - -300-
1000 ohms
-If a pump is used to bring oil to a level higher than the tank, an oil
safety valve is required. - -True
-On a call where a hydronic heat system is putting out too much heat
on the stack, the issue may be.. - --Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
-A high CO2 reading is caused by.. - -Incomplete combustion
-An often overlooked cause of a high CO2 reading is.. - -Not enough
combustion air in the equipment room.
-When multiple pumps are wired together in a heating system, they
should be wired in.. - -parallel
-In a series circuit.. - -Current has one path.
-When 2 burners are connected to the same chimney.. - -Sufficient draft
must be obtained to operate both units.
-The ignition transformer is located.. - -In the primary control.
-When safeties are wired in series one safety will affect the operation of
the others. - -True
-A stack switch is no longer allowed to be installed or replaced
because.. - -It's safety cutout time is higher than what is now required.
, -What is a power venter and what does it do? - -An 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? - -140"
-The difference between an adjustable flame retention burner and a
fixed flame retention burner is? - -Air 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.. - -527 CMR 9.0
-Heat is a form of.. - -Energy
-If a burner is operational but the circulator pump isn't running.. - -The
pump relay is not working correctly
-A method of dealing with low viscosity/cold temps with #2 oil? - -
Increase pump pressure/ decrease nozzle size
-What is needed at the outlet of an oil tank? - -Thermal safety valve
-Where do you obtain an installation permit for oil burners? - -Fire Dept
-How many Btu's approximately in 1 gal of #2 fuel oil? - -140,000 btu's
-Solid state ignition is superior to spark because - -It is not affected by
reduced voltage
-What is an installation? - -The 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? - -4'
-A pump in a one pipe system that is full of air can be self purged. - -
False
-List the minimum size of an oil supply line. - -3/8"
-A material with electrons so loose it allows voltage to pass with little or
no resistance.. - -Is a conductor
-If a high limit goes off, what does a low water switch do? - -Maintains
water temperature
, -What is flashpoint an indicator of? - -Minimum temperature oil will
ignite but not continue to burn.
-What travels on the inside of the wire? - -Volts
-What does readily accessible mean pertaining to oil burning
equipment? - -Capable of being reached easily and quickly for operation,
maintenance or inspection.
-What is the minimum vent pipe on an oil tank? - -1 1/4"
-What causes corrosion on a flue pipe? - -When the flue pipe is
operating below the dew point temperature.
-What are the methods to prevent oil waxing? - -Put additives in the
fuel.
Add an oil line heater.
Cut with #1 fuel or kerosene.
-What is the maximum tank size allowed inside unenclosed? - -660 gal
-What is the purpose of a delayed oil valve? - -Allows 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? - -A 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? - -1600
ohms
-What are the possible causes of soot at or near the power venter? - -
Incomplete combustion
-What is a possible side effect of air in a nozzle line? - -Soot
-What is the cause if the cad cell is tripped on safety? - -Dirty cad cell
Faulty cad cell
No flame present
-If a boiler is running but the water temperature is low? - -Undersized
nozzle
2023/251 Questions and Correct
Solutions/ A+
Rated
What is the first thing a tech should do when arriving at a no
combustion call? - -Ask how many times the customer reset the unit.
-What is the best long term solution for preventing a clogged nozzle? -
--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. - -False
-When in the presence of a flame, a cad cell normally reads.. - -300-
1000 ohms
-If a pump is used to bring oil to a level higher than the tank, an oil
safety valve is required. - -True
-On a call where a hydronic heat system is putting out too much heat
on the stack, the issue may be.. - --Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
-A high CO2 reading is caused by.. - -Incomplete combustion
-An often overlooked cause of a high CO2 reading is.. - -Not enough
combustion air in the equipment room.
-When multiple pumps are wired together in a heating system, they
should be wired in.. - -parallel
-In a series circuit.. - -Current has one path.
-When 2 burners are connected to the same chimney.. - -Sufficient draft
must be obtained to operate both units.
-The ignition transformer is located.. - -In the primary control.
-When safeties are wired in series one safety will affect the operation of
the others. - -True
-A stack switch is no longer allowed to be installed or replaced
because.. - -It's safety cutout time is higher than what is now required.
, -What is a power venter and what does it do? - -An 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? - -140"
-The difference between an adjustable flame retention burner and a
fixed flame retention burner is? - -Air 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.. - -527 CMR 9.0
-Heat is a form of.. - -Energy
-If a burner is operational but the circulator pump isn't running.. - -The
pump relay is not working correctly
-A method of dealing with low viscosity/cold temps with #2 oil? - -
Increase pump pressure/ decrease nozzle size
-What is needed at the outlet of an oil tank? - -Thermal safety valve
-Where do you obtain an installation permit for oil burners? - -Fire Dept
-How many Btu's approximately in 1 gal of #2 fuel oil? - -140,000 btu's
-Solid state ignition is superior to spark because - -It is not affected by
reduced voltage
-What is an installation? - -The 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? - -4'
-A pump in a one pipe system that is full of air can be self purged. - -
False
-List the minimum size of an oil supply line. - -3/8"
-A material with electrons so loose it allows voltage to pass with little or
no resistance.. - -Is a conductor
-If a high limit goes off, what does a low water switch do? - -Maintains
water temperature
, -What is flashpoint an indicator of? - -Minimum temperature oil will
ignite but not continue to burn.
-What travels on the inside of the wire? - -Volts
-What does readily accessible mean pertaining to oil burning
equipment? - -Capable of being reached easily and quickly for operation,
maintenance or inspection.
-What is the minimum vent pipe on an oil tank? - -1 1/4"
-What causes corrosion on a flue pipe? - -When the flue pipe is
operating below the dew point temperature.
-What are the methods to prevent oil waxing? - -Put additives in the
fuel.
Add an oil line heater.
Cut with #1 fuel or kerosene.
-What is the maximum tank size allowed inside unenclosed? - -660 gal
-What is the purpose of a delayed oil valve? - -Allows 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? - -A 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? - -1600
ohms
-What are the possible causes of soot at or near the power venter? - -
Incomplete combustion
-What is a possible side effect of air in a nozzle line? - -Soot
-What is the cause if the cad cell is tripped on safety? - -Dirty cad cell
Faulty cad cell
No flame present
-If a boiler is running but the water temperature is low? - -Undersized
nozzle
