JOURNEYMAN OIL BURNER Licensing Exam 2
Questions with 100% Correct Answers Latest Versions
2025 Top Rated A+
On a triple acting aquastat a minimum of 20 degrees is recommend between the high
and low limit, this will prevent? - ANSWER - The boiler going off on high limit before
reaching the minimum circulator temperature
An advantage of flame retention burner is - ANSWER - Their high static pressure
enables boilers and furnaces with tighter more efficient heat exchange passages
The key final adjustment for most oil burners is - ANSWER - Combustion air
Dirt or lint buildup in the bevel of the burner fan blades will - ANSWER - Reduce the
amount of combustion air
To change the air ratio for different firing rates with an adjustable head burner you -
ANSWER - Adjust the position of the drawer assembly in the Air tube
All petroleum products are chemical compounds of - ANSWER - Hydrogen and carbon
1 gallon of #2 oil contains approximately how many BTU's? - ANSWER - 140,000 BTU's
Flashpoint of a fuel is an indication of - ANSWER - The lowest temperature at which the
fuel will flash but not continue to burn
The pour point of #2 oil - ANSWER - Can be lowered by blending with kerosene, can be
lowered with fuel additives, and is the lowest temperature at which it will flow
Maximum fuel allowed without a license - ANSWER - 10,000 gallons
Is heating oil gets colder its viscosity (thickness): - ANSWER - Increases
Sulfuric acid in combustion gases can: - ANSWER - Damon's the flue lines, it holds in
the flue pipe, and create a scale buildup in the heat exchanger
The home for bacterial growth and sludge in the bottom of the oil tank is - ANSWER -
Water
, To ensure clean, uncontaminated fuel reaches the oil burner you must - ANSWER -
Install tanks properly, regularly inspect and fix minor defects before they lead to major
problems, and install a quality oil filter
Water in oil tanks come from - ANSWER - Condensation, loose or missing fill and vent
caps, and failing to drain water from a tank before installation
When installing an oil tank be sure: - ANSWER - The fill and vent lines are pitched
towards the tank, to install a vent alarm and a tank gauge, and to install an oil filter
Oil lines buried in concrete should be - ANSWER - Sleeved in plastic or PVC pipe with
no fittings below the floor
Fuel units (oil pumps) preform the following functions - ANSWER - Move oil from the
tank to the burner and deliver oil at a constant regulated pressure to the nozzle
The best way to clear a clogged oil line is to - ANSWER - Use a hand pump to pull the
blockage out
If the oil level in the tank is 4 feet below the fuel unit in 10 feet away, the approximate
vacuum should be - ANSWER - 5 - 6 inches
If the operating vacuum reading a significantly above the calculated vacuum, you
probably have a - ANSWER - Clogged oil filter
If the operating vacuum reading is significantly less than the calculated vacuum, you
probably have a - ANSWER - Suction line leak
It is best to connect your unit as a one pipe system instead of a 2 pipe system because
- ANSWER - One pipe leads to longer filter life and eliminates worries about leaking
return lines
A fuel de-aerator: - ANSWER - Eliminates the need for a return line back to the tank
A cause of pulsating oil pump pressure and a pulsating fire is - ANSWER - Air leaks in
the suction line
Increasing the fuel pump pressure will - ANSWER - Increase the flow rate
The purpose of an oil burner nozzle is to - ANSWER - Automize the oil, provide a
pattern of oil spray, and meter the amount of oil burned
When replacing nozzle - ANSWER - Follow the manufacturer's recommendations
Questions with 100% Correct Answers Latest Versions
2025 Top Rated A+
On a triple acting aquastat a minimum of 20 degrees is recommend between the high
and low limit, this will prevent? - ANSWER - The boiler going off on high limit before
reaching the minimum circulator temperature
An advantage of flame retention burner is - ANSWER - Their high static pressure
enables boilers and furnaces with tighter more efficient heat exchange passages
The key final adjustment for most oil burners is - ANSWER - Combustion air
Dirt or lint buildup in the bevel of the burner fan blades will - ANSWER - Reduce the
amount of combustion air
To change the air ratio for different firing rates with an adjustable head burner you -
ANSWER - Adjust the position of the drawer assembly in the Air tube
All petroleum products are chemical compounds of - ANSWER - Hydrogen and carbon
1 gallon of #2 oil contains approximately how many BTU's? - ANSWER - 140,000 BTU's
Flashpoint of a fuel is an indication of - ANSWER - The lowest temperature at which the
fuel will flash but not continue to burn
The pour point of #2 oil - ANSWER - Can be lowered by blending with kerosene, can be
lowered with fuel additives, and is the lowest temperature at which it will flow
Maximum fuel allowed without a license - ANSWER - 10,000 gallons
Is heating oil gets colder its viscosity (thickness): - ANSWER - Increases
Sulfuric acid in combustion gases can: - ANSWER - Damon's the flue lines, it holds in
the flue pipe, and create a scale buildup in the heat exchanger
The home for bacterial growth and sludge in the bottom of the oil tank is - ANSWER -
Water
, To ensure clean, uncontaminated fuel reaches the oil burner you must - ANSWER -
Install tanks properly, regularly inspect and fix minor defects before they lead to major
problems, and install a quality oil filter
Water in oil tanks come from - ANSWER - Condensation, loose or missing fill and vent
caps, and failing to drain water from a tank before installation
When installing an oil tank be sure: - ANSWER - The fill and vent lines are pitched
towards the tank, to install a vent alarm and a tank gauge, and to install an oil filter
Oil lines buried in concrete should be - ANSWER - Sleeved in plastic or PVC pipe with
no fittings below the floor
Fuel units (oil pumps) preform the following functions - ANSWER - Move oil from the
tank to the burner and deliver oil at a constant regulated pressure to the nozzle
The best way to clear a clogged oil line is to - ANSWER - Use a hand pump to pull the
blockage out
If the oil level in the tank is 4 feet below the fuel unit in 10 feet away, the approximate
vacuum should be - ANSWER - 5 - 6 inches
If the operating vacuum reading a significantly above the calculated vacuum, you
probably have a - ANSWER - Clogged oil filter
If the operating vacuum reading is significantly less than the calculated vacuum, you
probably have a - ANSWER - Suction line leak
It is best to connect your unit as a one pipe system instead of a 2 pipe system because
- ANSWER - One pipe leads to longer filter life and eliminates worries about leaking
return lines
A fuel de-aerator: - ANSWER - Eliminates the need for a return line back to the tank
A cause of pulsating oil pump pressure and a pulsating fire is - ANSWER - Air leaks in
the suction line
Increasing the fuel pump pressure will - ANSWER - Increase the flow rate
The purpose of an oil burner nozzle is to - ANSWER - Automize the oil, provide a
pattern of oil spray, and meter the amount of oil burned
When replacing nozzle - ANSWER - Follow the manufacturer's recommendations
