FDNY P-99 C OF F EXAM 2025 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST |LATEST UPDATE
|GUARANTEED PASS
What is indicated when the flame is white and dazzling?
Excess air
What can be a result of insufficient air supply?
Dense, black smoke and soot
What can happen to the flame of there is an excess air supply?
The flame can go out
What will happen if oil and air mixture contacts walls of combustion chamber?
Will cause a smoky fire, which leads to carbon build up on walls and burner failure
What is reflected heat?
Heat that is channeled back to combustion chamber to maintain fire after the ignition is turned
off.
At what temperature is oil stored at?
Just above 100 degrees
What temperature is fuel raised to before entering combustion chamber?
180 degrees
What can lead to after drip?
1|Page
, A defective oil cut off valve, allows oil to drip into combustion chamber while burner is off.
Carbon build up.
What leads to oil leaking on the floor in front of the unit?
A bad seal on the oil pump shaft
How often should nozzles and rotary cups be cleaned on a no. 6 oil burner?
Daily
What will cause boiler room to be filled with smoke?
Blockage in the chimney or flue passage
What will water in fuel oil cause?
Improper atomization
What is the most common cause of a puff back?
A delay in ignition
What is the purpose of a protective relay?
To shut down burners if a flame is not established quickly
What can happen if a combustion chamber is not preheated?
Oil burner system gets filled with vaporized oil fumes. Indicated by strong odor
Where is fuel oil stored?
In oil storage tank
What is the purpose of the tank shut off valve?
Stop the flow of oil for purpose of maintenance or emergency
What is an oil strainer?
The oil strainer prevents sediment and dirt in oil from storage tank from entering combustion
chamber
What is the vacuum gauge for?
To indicate whether there is an obstruction in the suction line
What is the purpose of the preheater?
To raise temperature of oil for efficiency in pumping and atomization
2|Page
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST |LATEST UPDATE
|GUARANTEED PASS
What is indicated when the flame is white and dazzling?
Excess air
What can be a result of insufficient air supply?
Dense, black smoke and soot
What can happen to the flame of there is an excess air supply?
The flame can go out
What will happen if oil and air mixture contacts walls of combustion chamber?
Will cause a smoky fire, which leads to carbon build up on walls and burner failure
What is reflected heat?
Heat that is channeled back to combustion chamber to maintain fire after the ignition is turned
off.
At what temperature is oil stored at?
Just above 100 degrees
What temperature is fuel raised to before entering combustion chamber?
180 degrees
What can lead to after drip?
1|Page
, A defective oil cut off valve, allows oil to drip into combustion chamber while burner is off.
Carbon build up.
What leads to oil leaking on the floor in front of the unit?
A bad seal on the oil pump shaft
How often should nozzles and rotary cups be cleaned on a no. 6 oil burner?
Daily
What will cause boiler room to be filled with smoke?
Blockage in the chimney or flue passage
What will water in fuel oil cause?
Improper atomization
What is the most common cause of a puff back?
A delay in ignition
What is the purpose of a protective relay?
To shut down burners if a flame is not established quickly
What can happen if a combustion chamber is not preheated?
Oil burner system gets filled with vaporized oil fumes. Indicated by strong odor
Where is fuel oil stored?
In oil storage tank
What is the purpose of the tank shut off valve?
Stop the flow of oil for purpose of maintenance or emergency
What is an oil strainer?
The oil strainer prevents sediment and dirt in oil from storage tank from entering combustion
chamber
What is the vacuum gauge for?
To indicate whether there is an obstruction in the suction line
What is the purpose of the preheater?
To raise temperature of oil for efficiency in pumping and atomization
2|Page
