Oil Burner License Exam Update 2025 Oil
Burner License Actual Exam 2025 Questions
and Correct Answers Rated A+
What is the first thing a tech should do when arriving at a no
combustion call? -Answer-Ask 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. -Answer-False
When in the presence of a flame, a cad cell normally reads.. -Answer-
300-1000 ohms
If a pump is used to bring oil to a level higher than the tank, an oil
safety valve is required. -Answer-True
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.. -Answer-Incomplete combustion
An often overlooked cause of a high CO2 reading is.. -Answer-Not
enough combustion air in the equipment room.
,When multiple pumps are wired together in a heating system, they
should be wired in.. -Answer-parallel
In a series circuit.. -Answer-Current has one path.
When 2 burners are connected to the same chimney.. -Answer-
Sufficient draft must be obtained to operate both units.
The ignition transformer is located.. -Answer-In the primary control.
When safeties are wired in series one safety will affect the operation
of the others. -Answer-True
A stack switch is no longer allowed to be installed or replaced
because.. -Answer-It's safety cutout time is higher than what is now
required.
What is a power venter and what does it do? -Answer-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? -Answer-140"
The difference between an adjustable flame retention burner and a
fixed flame retention burner is? -Answer-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.. -Answer-527 CMR 9.0
Heat is a form of.. -Answer-Energy
,If a burner is operational but the circulator pump isn't running.. -
Answer-The pump relay is not working correctly
A method of dealing with low viscosity/cold temps with #2 oil? -
Answer-Increase pump pressure/ decrease nozzle size
What is needed at the outlet of an oil tank? -Answer-Thermal safety
valve
Where do you obtain an installation permit for oil burners? -Answer-
Fire Dept
How many Btu's approximately in 1 gal of #2 fuel oil? -Answer-
140,000 btu's
Solid state ignition is superior to spark because -Answer-It is not
affected by reduced voltage
What is an installation? -Answer-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? -
Answer-4'
A pump in a one pipe system that is full of air can be self purged. -
Answer-False
List the minimum size of an oil supply line. -Answer-3/8"
, A material with electrons so loose it allows voltage to pass with little or
no resistance.. -Answer-Is a conductor
If a high limit goes off, what does a low water switch do? -Answer-
Maintains water temperature
What is flashpoint an indicator of? -Answer-Minimum temperature oil
will ignite but not continue to burn.
What travels on the inside of the wire? -Answer-Volts
What does readily accessible mean pertaining to oil burning
equipment? -Answer-Capable of being reached easily and quickly for
operation, maintenance or inspection.
What is the minimum vent pipe on an oil tank? -Answer-1 1/4"
What causes corrosion on a flue pipe? -Answer-When the flue pipe is
operating below the dew point temperature.
What are the methods to prevent oil waxing? -Answer-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? -Answer-
660 gal
What is the purpose of a delayed oil valve? -Answer-Allows time for
the oil pump to get up to speed.
Delays oil flow to the nozzle.
Burner License Actual Exam 2025 Questions
and Correct Answers Rated A+
What is the first thing a tech should do when arriving at a no
combustion call? -Answer-Ask 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. -Answer-False
When in the presence of a flame, a cad cell normally reads.. -Answer-
300-1000 ohms
If a pump is used to bring oil to a level higher than the tank, an oil
safety valve is required. -Answer-True
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.. -Answer-Incomplete combustion
An often overlooked cause of a high CO2 reading is.. -Answer-Not
enough combustion air in the equipment room.
,When multiple pumps are wired together in a heating system, they
should be wired in.. -Answer-parallel
In a series circuit.. -Answer-Current has one path.
When 2 burners are connected to the same chimney.. -Answer-
Sufficient draft must be obtained to operate both units.
The ignition transformer is located.. -Answer-In the primary control.
When safeties are wired in series one safety will affect the operation
of the others. -Answer-True
A stack switch is no longer allowed to be installed or replaced
because.. -Answer-It's safety cutout time is higher than what is now
required.
What is a power venter and what does it do? -Answer-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? -Answer-140"
The difference between an adjustable flame retention burner and a
fixed flame retention burner is? -Answer-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.. -Answer-527 CMR 9.0
Heat is a form of.. -Answer-Energy
,If a burner is operational but the circulator pump isn't running.. -
Answer-The pump relay is not working correctly
A method of dealing with low viscosity/cold temps with #2 oil? -
Answer-Increase pump pressure/ decrease nozzle size
What is needed at the outlet of an oil tank? -Answer-Thermal safety
valve
Where do you obtain an installation permit for oil burners? -Answer-
Fire Dept
How many Btu's approximately in 1 gal of #2 fuel oil? -Answer-
140,000 btu's
Solid state ignition is superior to spark because -Answer-It is not
affected by reduced voltage
What is an installation? -Answer-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? -
Answer-4'
A pump in a one pipe system that is full of air can be self purged. -
Answer-False
List the minimum size of an oil supply line. -Answer-3/8"
, A material with electrons so loose it allows voltage to pass with little or
no resistance.. -Answer-Is a conductor
If a high limit goes off, what does a low water switch do? -Answer-
Maintains water temperature
What is flashpoint an indicator of? -Answer-Minimum temperature oil
will ignite but not continue to burn.
What travels on the inside of the wire? -Answer-Volts
What does readily accessible mean pertaining to oil burning
equipment? -Answer-Capable of being reached easily and quickly for
operation, maintenance or inspection.
What is the minimum vent pipe on an oil tank? -Answer-1 1/4"
What causes corrosion on a flue pipe? -Answer-When the flue pipe is
operating below the dew point temperature.
What are the methods to prevent oil waxing? -Answer-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? -Answer-
660 gal
What is the purpose of a delayed oil valve? -Answer-Allows time for
the oil pump to get up to speed.
Delays oil flow to the nozzle.
