1
Oil Burner License 2025 QUESTIONS
AND VERFIED CORRECT ANSWERS
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.
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,2
-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.
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,3
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
3
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 4
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
4
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Oil Burner License 2025 QUESTIONS
AND VERFIED CORRECT ANSWERS
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.
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,2
-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.
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,3
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
3
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 4
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
4
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
