Oil Burner License Prep 2026-2027
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What type of system does the ignition stay on? - ANSWER Intermittent
2. How many screws are required on a flue pipe connector? - ANSWER 3
3. Is ultra low sulfur fuel more efficient - ANSWER Yes
4. What is the best way to blow out an oil supply line? - ANSWER Hand
pump (safest way)
5. What is the primary voltage of an ignition transformer? - ANSWER 120v
6. What is the maximum voltage to ground? - ANSWER 150v
7. Is steam pressure over 15psi high pressure - ANSWER Yes
,8. What is the secondary voltage on an ignition transformer - ANSWER
10,000v for an iron clad (electronic is 10k to 14k volts)
9. Thermal valve melts at what temperature? - ANSWER 165°F
10.Where are the thermal valves required? - ANSWER 2 are required, one
at the tank outlet and one at the pump inlet. (A thermal valve is a spring
loaded valve with a melt able solder)
11.If you have a residential oil burner that blows a 15 amp fuse what should
you do? - ANSWER Use an amp probe
12.Who approves oil burner installations? - ANSWER Local Fire department
13.What is the largest oil tank that can be exposed? - ANSWER 660 gal
14.What is the minimum vent and fill size for a 660 gal tank? - ANSWER 1
1/4
15.To avoid condensation in flue pipe on an oil fired appliance, what should the
minimum gross stack temp be? - ANSWER 350°F (stack-primary air = net
stack)
, 16.What does a OSV do? - ANSWER Prevents oil leaks on and underground
tank. (OSV - oil safety valve. Opens with a vacuum)
17.How many thermal valves are required on a new install? - ANSWER 2
18.What is the only test that can be performed in the field? - ANSWER
Combustion analysis
19.Fuel pressure is set at what psi? - ANSWER 100psi
20.Are test wells allowed on underground tanks? - ANSWER No
21.What is the maximum safety timing on a switch? - ANSWER 45sec (new
code states 15 sec)
22.What are the two major components of a fuel? - ANSWER Hydrogen
(85%) and carbon (15%)
23.Which way should you pitch the flue? - ANSWER 1/4" towards the
outlet of the boiler (1/4 per 10')
24.Is a one pipe system should the bypass plug be installed? - ANSWER No
25.What is oil flow measured in? - ANSWER GPH (Gallons Per Hour)
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What type of system does the ignition stay on? - ANSWER Intermittent
2. How many screws are required on a flue pipe connector? - ANSWER 3
3. Is ultra low sulfur fuel more efficient - ANSWER Yes
4. What is the best way to blow out an oil supply line? - ANSWER Hand
pump (safest way)
5. What is the primary voltage of an ignition transformer? - ANSWER 120v
6. What is the maximum voltage to ground? - ANSWER 150v
7. Is steam pressure over 15psi high pressure - ANSWER Yes
,8. What is the secondary voltage on an ignition transformer - ANSWER
10,000v for an iron clad (electronic is 10k to 14k volts)
9. Thermal valve melts at what temperature? - ANSWER 165°F
10.Where are the thermal valves required? - ANSWER 2 are required, one
at the tank outlet and one at the pump inlet. (A thermal valve is a spring
loaded valve with a melt able solder)
11.If you have a residential oil burner that blows a 15 amp fuse what should
you do? - ANSWER Use an amp probe
12.Who approves oil burner installations? - ANSWER Local Fire department
13.What is the largest oil tank that can be exposed? - ANSWER 660 gal
14.What is the minimum vent and fill size for a 660 gal tank? - ANSWER 1
1/4
15.To avoid condensation in flue pipe on an oil fired appliance, what should the
minimum gross stack temp be? - ANSWER 350°F (stack-primary air = net
stack)
, 16.What does a OSV do? - ANSWER Prevents oil leaks on and underground
tank. (OSV - oil safety valve. Opens with a vacuum)
17.How many thermal valves are required on a new install? - ANSWER 2
18.What is the only test that can be performed in the field? - ANSWER
Combustion analysis
19.Fuel pressure is set at what psi? - ANSWER 100psi
20.Are test wells allowed on underground tanks? - ANSWER No
21.What is the maximum safety timing on a switch? - ANSWER 45sec (new
code states 15 sec)
22.What are the two major components of a fuel? - ANSWER Hydrogen
(85%) and carbon (15%)
23.Which way should you pitch the flue? - ANSWER 1/4" towards the
outlet of the boiler (1/4 per 10')
24.Is a one pipe system should the bypass plug be installed? - ANSWER No
25.What is oil flow measured in? - ANSWER GPH (Gallons Per Hour)
