1
MASSACHUSETTS OIL BURNER LICENSE
NEWEST 2024-2025 ACTUAL EXAM TEST BANK
PREDICTOR 350 VERIFIED QUESTIONS AND
CORRECT DETAILED ANSWERS (DETAILED
RATIONALES) | GRADED A+ GUARANTEED
PASS
What is the first thing a tech should do when arriving at a no combustion call? - ANS :Ask how
many times the customer reset the unit.
What is the best long term solution for preventing a clogged nozzle? - ANS :-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. - ANS :False
When in the presence of a flame, a cad cell normally reads.. - ANS :300-1000 ohms
If a pump is used to bring oil to a level higher than the tank, an oil safety valve is required. -
ANS :True
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, 2
On a call where a hydronic heat system is putting out too much heat on the stack, the issue
may be.. - ANS :-Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
A high CO2 reading is caused by.. - ANS :Incomplete combustion
An often overlooked cause of a high CO2 reading is.. - ANS :Not enough combustion air in the
equipment room.
When multiple pumps are wired together in a heating system, they should be wired in.. - ANS
:parallel
In a series circuit.. - ANS :Current has one path.
When 2 burners are connected to the same chimney.. - ANS :Sufficient draft must be obtained
to operate both units.
The ignition transformer is located.. - ANS :In the primary control.
When safeties are wired in series one safety will affect the operation of the others. - ANS :True
A stack switch is no longer allowed to be installed or replaced because.. - ANS :It's safety
cutout time is higher than what is now required.
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What is a power venter and what does it do? - ANS :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? - ANS :140"
The difference between an adjustable flame retention burner and a fixed flame retention
burner is? - ANS :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.. - ANS :527
CMR 9.0
Heat is a form of.. - ANS :Energy
If a burner is operational but the circulator pump isn't running.. - ANS :The pump relay is not
working correctly
A method of dealing with low viscosity/cold temps with #2 oil? - ANS :Increase pump pressure/
decrease nozzle size
What is needed at the outlet of an oil tank? - ANS :Thermal safety valve
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, 4
Where do you obtain an installation permit for oil burners? - ANS :Fire Dept
How many Btu's approximately in 1 gal of #2 fuel oil? - ANS :140,000 btu's
Solid state ignition is superior to spark because - ANS :It is not affected by reduced voltage
What is an installation? - ANS :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? - ANS :4'
A pump in a one pipe system that is full of air can be self purged. - ANS :False
List the minimum size of an oil supply line. - ANS :3/8"
Oil lines that are buried in concrete should: - ANS :Be sleeved in non-metallic pipe
We install oil safety valves and oil pressure reducing valves to: - ANS :Reduce the head
pressure at the pump and prevent the tank from siphoning in the event of a suction line leak
One advantage of a two stage fuel unit on a one pipe system application is: - ANS :There are
no advantages
If the vacuum gauge reading is substantially above the calculated reading with the burner
running, the cause could be: - ANS :Restriction in supply line
4|Page
MASSACHUSETTS OIL BURNER LICENSE
NEWEST 2024-2025 ACTUAL EXAM TEST BANK
PREDICTOR 350 VERIFIED QUESTIONS AND
CORRECT DETAILED ANSWERS (DETAILED
RATIONALES) | GRADED A+ GUARANTEED
PASS
What is the first thing a tech should do when arriving at a no combustion call? - ANS :Ask how
many times the customer reset the unit.
What is the best long term solution for preventing a clogged nozzle? - ANS :-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. - ANS :False
When in the presence of a flame, a cad cell normally reads.. - ANS :300-1000 ohms
If a pump is used to bring oil to a level higher than the tank, an oil safety valve is required. -
ANS :True
1|Page
, 2
On a call where a hydronic heat system is putting out too much heat on the stack, the issue
may be.. - ANS :-Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
A high CO2 reading is caused by.. - ANS :Incomplete combustion
An often overlooked cause of a high CO2 reading is.. - ANS :Not enough combustion air in the
equipment room.
When multiple pumps are wired together in a heating system, they should be wired in.. - ANS
:parallel
In a series circuit.. - ANS :Current has one path.
When 2 burners are connected to the same chimney.. - ANS :Sufficient draft must be obtained
to operate both units.
The ignition transformer is located.. - ANS :In the primary control.
When safeties are wired in series one safety will affect the operation of the others. - ANS :True
A stack switch is no longer allowed to be installed or replaced because.. - ANS :It's safety
cutout time is higher than what is now required.
2|Page
, 3
What is a power venter and what does it do? - ANS :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? - ANS :140"
The difference between an adjustable flame retention burner and a fixed flame retention
burner is? - ANS :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.. - ANS :527
CMR 9.0
Heat is a form of.. - ANS :Energy
If a burner is operational but the circulator pump isn't running.. - ANS :The pump relay is not
working correctly
A method of dealing with low viscosity/cold temps with #2 oil? - ANS :Increase pump pressure/
decrease nozzle size
What is needed at the outlet of an oil tank? - ANS :Thermal safety valve
3|Page
, 4
Where do you obtain an installation permit for oil burners? - ANS :Fire Dept
How many Btu's approximately in 1 gal of #2 fuel oil? - ANS :140,000 btu's
Solid state ignition is superior to spark because - ANS :It is not affected by reduced voltage
What is an installation? - ANS :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? - ANS :4'
A pump in a one pipe system that is full of air can be self purged. - ANS :False
List the minimum size of an oil supply line. - ANS :3/8"
Oil lines that are buried in concrete should: - ANS :Be sleeved in non-metallic pipe
We install oil safety valves and oil pressure reducing valves to: - ANS :Reduce the head
pressure at the pump and prevent the tank from siphoning in the event of a suction line leak
One advantage of a two stage fuel unit on a one pipe system application is: - ANS :There are
no advantages
If the vacuum gauge reading is substantially above the calculated reading with the burner
running, the cause could be: - ANS :Restriction in supply line
4|Page
