Oil burner License Study Guide ( Massachusetts )
Exam Questions And Correct Answers (Verified
Answers) Updated 2027
Give 2 reasons why draft is necessary? - ANSWER -Remove flu gasses &
efficiency.
Would an increase in excess air raise or lower the stack temp? - ANSWER -Raise
Where should a hot water temp operating control not be located? - ANSWER -
Away from the tankless coil
What are the requirements for pressure controls for boilers? - ANSWER -Line
Voltage, ( Max 15 psi ) , Mounted on pigtail, and above water line.
What info on an oil burner certifies it has been approved by the Marshall? -
ANSWER -Mass Approval #
What is a scavenger period? - ANSWER -Pre + Post Purge
What are two methods used by domestic oil burners to prepare oil for combustion.
- ANSWER -Atomize & Vaporize
What is composition of #2 fuel oil? - ANSWER -85% carbon & 15% Hydrogen
What must be installed on gravity oil burners for safety? - ANSWER -Constant
Level Valve
After a Thermostat has been installed what should be checked? - ANSWER -
Level, Heat Anticipator, Calibration
What is a Cad Cell ? - ANSWER -A light sensitive Resistor
, What is the melting point of solder used on oil lines? - ANSWER -500 Degrees F
Why should you not allow an oil pump to create more then 12" of Vacuum? -
ANSWER -Cavitation
What parts are replaced on an annual tune-up? - ANSWER -Filter, nozzle,
strainer, and pump Gasket
When is alarm used on an oil tank? - ANSWER -When you can not tell what level
while filling
What info must be given when buying a new pump? - ANSWER -Rpm's, rotation,
inlet port, outlet port, and stage of pump?
Name 3 causes of delayed ignition ? - ANSWER -Weak Transformer, Bad
Electrodes, and bad spray pattern/clogged nozzle
What is the voltage output of an ignition transformer? - ANSWER -10,000
Standard & 14,000 Rotary
What determines the GPH of a nozzle ? - ANSWER -The Orriface
Inner parts of a nozzle can be changed? True? Or False? - ANSWER -False. You
never change the inner parts of a nozzle
What do we mean by differential with regards to a pressure trol? - ANSWER -Cut
out & Cut in
How many BTU's in a Gallon of #2 fuel oil? - ANSWER -140,000 Btu's
How is an electrical solenoid valve wired and where is it installed? - ANSWER -
Wired in parallel & installed to the motor
What is a series circuit? - ANSWER -One path for electrons to flow
Exam Questions And Correct Answers (Verified
Answers) Updated 2027
Give 2 reasons why draft is necessary? - ANSWER -Remove flu gasses &
efficiency.
Would an increase in excess air raise or lower the stack temp? - ANSWER -Raise
Where should a hot water temp operating control not be located? - ANSWER -
Away from the tankless coil
What are the requirements for pressure controls for boilers? - ANSWER -Line
Voltage, ( Max 15 psi ) , Mounted on pigtail, and above water line.
What info on an oil burner certifies it has been approved by the Marshall? -
ANSWER -Mass Approval #
What is a scavenger period? - ANSWER -Pre + Post Purge
What are two methods used by domestic oil burners to prepare oil for combustion.
- ANSWER -Atomize & Vaporize
What is composition of #2 fuel oil? - ANSWER -85% carbon & 15% Hydrogen
What must be installed on gravity oil burners for safety? - ANSWER -Constant
Level Valve
After a Thermostat has been installed what should be checked? - ANSWER -
Level, Heat Anticipator, Calibration
What is a Cad Cell ? - ANSWER -A light sensitive Resistor
, What is the melting point of solder used on oil lines? - ANSWER -500 Degrees F
Why should you not allow an oil pump to create more then 12" of Vacuum? -
ANSWER -Cavitation
What parts are replaced on an annual tune-up? - ANSWER -Filter, nozzle,
strainer, and pump Gasket
When is alarm used on an oil tank? - ANSWER -When you can not tell what level
while filling
What info must be given when buying a new pump? - ANSWER -Rpm's, rotation,
inlet port, outlet port, and stage of pump?
Name 3 causes of delayed ignition ? - ANSWER -Weak Transformer, Bad
Electrodes, and bad spray pattern/clogged nozzle
What is the voltage output of an ignition transformer? - ANSWER -10,000
Standard & 14,000 Rotary
What determines the GPH of a nozzle ? - ANSWER -The Orriface
Inner parts of a nozzle can be changed? True? Or False? - ANSWER -False. You
never change the inner parts of a nozzle
What do we mean by differential with regards to a pressure trol? - ANSWER -Cut
out & Cut in
How many BTU's in a Gallon of #2 fuel oil? - ANSWER -140,000 Btu's
How is an electrical solenoid valve wired and where is it installed? - ANSWER -
Wired in parallel & installed to the motor
What is a series circuit? - ANSWER -One path for electrons to flow
