OIL BURNER LICENSE NEWEST 2026 ACTUAL
EXAM TEST BANK QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+ (MASSACHUSETTS)
How much air is needed to burn a gallon of number 2 fuel oil and why. -
ANSWER-In 2015 most oil burners are set up to burn with approximately 50%
excess air because it would be dangerous to set up a burner for exactly the correct
amount of air
What is the term Instep mean - ANSWER-The stack relay is operating correctly
What size vent pipe is required with a 2-inch fill pipe - ANSWER-A fill pipe shall
not be greater than the vent pipe. The minimum the fill pipe in the state of
Massachusetts is one and one quarter inch.
Explain interrupted ignition - ANSWER-the ignition Transformer drops out of the
circuit once a flame is established
. One advantage to lightweight combustion chambers is they: - ANSWER-cool
down quickly
Flame retention oil burners do not depend as much on _____ for good combustion
as did older boilers - ANSWER-chimney draft
Excess air in the combustion process lowers system efficiency by: - ANSWER-
increasing draft
Fuel Units (oil pumps) perform the following functions: - ANSWER-Lift oil from
the tank to the burner, prevent contaminants that pass the external oil filter from
clogging the nozzle, 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 and 10 feet away the
approximate vacuums should be: - ANSWER-5-6 inches (1'' for every vertical
foot, 1'' for every 10').
If the operating vacuum reading is significantly above the calculated vacuum, you
probably have a: - ANSWER-Clogged oil filter.
If the operating vacuum is significantly less than the calculated vacuum you
probably have: - ANSWER-Suction line leak.
It is best to connect fuel units as a one-pipe system instead of a two-pipe system
because: - ANSWER-One pipe leaders 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 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-1. Atomize the oil,
2. Provide a Spray Pattern,
3. Meter the amount of oil burned.
When replacing a nozzle: - ANSWER-Follow the manufacturers
recommendations.
To reduce combustion problems caused by cold oil: - ANSWER-Increase pump
pressure, install a nozzle line pre-heater, use additives or kerosene to lower
viscosity.
Nozzle after drip can be caused by: - ANSWER-A defective pressure regulating
valve, Air in the nozzle line, Oil expansion in the nozzle line after shut down.
,What are the elements are found in fuel oil number 2 - ANSWER-Carbon
hydrogen oxygen and hydrocarbons
What is a BTU - ANSWER-A British thermal unit is the amount of heat needed to
raise one pound of water 1 degree Fahrenheit
How many BTUs are in one gallon number 2 fuel oil - ANSWER-140,000 BTUs
What determines the gallons per hour of a nozzle - ANSWER-Manufacturer, the
bore size, pump pressure or Orphus
What is a series circuit - ANSWER-an electrical or piping circuit where all of the
current or fluid flows through the entire circuit
What is a degree day - ANSWER-The average temp for the day - 65
What is the flash point of number 2 fuel oil - ANSWER-115 degrees Fahrenheit
When does the law require a combustion efficiency test - ANSWER-During
installation and maintenance
What controller shuts off the oil burner in the event of excessive temperature in the
appliance - ANSWER-The high limit switch
What control devices are found on gravity feed burners - ANSWER-Constant level
valve
When is a vent pipe required - ANSWER-When the Supply tank is larger than 10
gallons
What is the time limit for submitting certificate of completion - ANSWER-Within
72 hours
What kinds of joints are used on tank installations - ANSWER-Swing joints
Why are swing joints used on oil tank installations - ANSWER-Shifting with in the
tank
, What is the minimum distance that the burner can be from the tank - ANSWER-5
feet
How many gallons of oil can be stored without a permit - ANSWER-10 gallons or
less
How much outside or replacement air is needed in a confined space - ANSWER-1
square inch for 2000 BTUs
How much outside air or replacement air is needed in a boiler room in of tight
Construction - ANSWER-1 square inch per 1000 BTUs
What is the purpose of a heat anticipator - ANSWER-It keeps the heat from over
shooting
Explain two different types of differentials used by thermostat - ANSWER-In
heating anticipates heat leftover.in cold turns on compressor early
what are the parts of an ignition assembly explain the function of each part what is
the operating voltage - ANSWER-Electrode: spark to ignite fuel. Transformer: step
up from 120 volts to 14000 hundred volts. porcelain are insulators.
When does code require low water cutoff - ANSWER-Always on a steam boiler,
and when hot water heater has an input rating of 400,000 BTUs an hour or greater
What are the three functions of a pressure regulating valve on an oil pump -
ANSWER-Maintain boiler pressure clean sharp cut off and Supply oil.
Can a series 80 dryer thermostat be wired into a 3-wire control - ANSWER-No
What is the greatest loss in a boiler - ANSWER-Heat loss through the chimney
How high on the wall should thermostat be installed - ANSWER-5 feet from the
ground
EXAM TEST BANK QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+ (MASSACHUSETTS)
How much air is needed to burn a gallon of number 2 fuel oil and why. -
ANSWER-In 2015 most oil burners are set up to burn with approximately 50%
excess air because it would be dangerous to set up a burner for exactly the correct
amount of air
What is the term Instep mean - ANSWER-The stack relay is operating correctly
What size vent pipe is required with a 2-inch fill pipe - ANSWER-A fill pipe shall
not be greater than the vent pipe. The minimum the fill pipe in the state of
Massachusetts is one and one quarter inch.
Explain interrupted ignition - ANSWER-the ignition Transformer drops out of the
circuit once a flame is established
. One advantage to lightweight combustion chambers is they: - ANSWER-cool
down quickly
Flame retention oil burners do not depend as much on _____ for good combustion
as did older boilers - ANSWER-chimney draft
Excess air in the combustion process lowers system efficiency by: - ANSWER-
increasing draft
Fuel Units (oil pumps) perform the following functions: - ANSWER-Lift oil from
the tank to the burner, prevent contaminants that pass the external oil filter from
clogging the nozzle, 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 and 10 feet away the
approximate vacuums should be: - ANSWER-5-6 inches (1'' for every vertical
foot, 1'' for every 10').
If the operating vacuum reading is significantly above the calculated vacuum, you
probably have a: - ANSWER-Clogged oil filter.
If the operating vacuum is significantly less than the calculated vacuum you
probably have: - ANSWER-Suction line leak.
It is best to connect fuel units as a one-pipe system instead of a two-pipe system
because: - ANSWER-One pipe leaders 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 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-1. Atomize the oil,
2. Provide a Spray Pattern,
3. Meter the amount of oil burned.
When replacing a nozzle: - ANSWER-Follow the manufacturers
recommendations.
To reduce combustion problems caused by cold oil: - ANSWER-Increase pump
pressure, install a nozzle line pre-heater, use additives or kerosene to lower
viscosity.
Nozzle after drip can be caused by: - ANSWER-A defective pressure regulating
valve, Air in the nozzle line, Oil expansion in the nozzle line after shut down.
,What are the elements are found in fuel oil number 2 - ANSWER-Carbon
hydrogen oxygen and hydrocarbons
What is a BTU - ANSWER-A British thermal unit is the amount of heat needed to
raise one pound of water 1 degree Fahrenheit
How many BTUs are in one gallon number 2 fuel oil - ANSWER-140,000 BTUs
What determines the gallons per hour of a nozzle - ANSWER-Manufacturer, the
bore size, pump pressure or Orphus
What is a series circuit - ANSWER-an electrical or piping circuit where all of the
current or fluid flows through the entire circuit
What is a degree day - ANSWER-The average temp for the day - 65
What is the flash point of number 2 fuel oil - ANSWER-115 degrees Fahrenheit
When does the law require a combustion efficiency test - ANSWER-During
installation and maintenance
What controller shuts off the oil burner in the event of excessive temperature in the
appliance - ANSWER-The high limit switch
What control devices are found on gravity feed burners - ANSWER-Constant level
valve
When is a vent pipe required - ANSWER-When the Supply tank is larger than 10
gallons
What is the time limit for submitting certificate of completion - ANSWER-Within
72 hours
What kinds of joints are used on tank installations - ANSWER-Swing joints
Why are swing joints used on oil tank installations - ANSWER-Shifting with in the
tank
, What is the minimum distance that the burner can be from the tank - ANSWER-5
feet
How many gallons of oil can be stored without a permit - ANSWER-10 gallons or
less
How much outside or replacement air is needed in a confined space - ANSWER-1
square inch for 2000 BTUs
How much outside air or replacement air is needed in a boiler room in of tight
Construction - ANSWER-1 square inch per 1000 BTUs
What is the purpose of a heat anticipator - ANSWER-It keeps the heat from over
shooting
Explain two different types of differentials used by thermostat - ANSWER-In
heating anticipates heat leftover.in cold turns on compressor early
what are the parts of an ignition assembly explain the function of each part what is
the operating voltage - ANSWER-Electrode: spark to ignite fuel. Transformer: step
up from 120 volts to 14000 hundred volts. porcelain are insulators.
When does code require low water cutoff - ANSWER-Always on a steam boiler,
and when hot water heater has an input rating of 400,000 BTUs an hour or greater
What are the three functions of a pressure regulating valve on an oil pump -
ANSWER-Maintain boiler pressure clean sharp cut off and Supply oil.
Can a series 80 dryer thermostat be wired into a 3-wire control - ANSWER-No
What is the greatest loss in a boiler - ANSWER-Heat loss through the chimney
How high on the wall should thermostat be installed - ANSWER-5 feet from the
ground
