OIL BURNER LICENCE EXAM
QUESTIONS AND EXPERT VERIFIED
ANSWER 2025 EXAM GRADED 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
QUESTIONS AND EXPERT VERIFIED
ANSWER 2025 EXAM GRADED 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
