EXAM QUESTIONS WITH ANSWERS NEW
MODIFIED TESTED AND APPROVED GRADED A+
2026 LATEST
How is an oil burner wired --CORRECT ANSWER--Shall be wired on its own
circuit. All protective control and emergency devices shall be series connected
in the grounded line conductors. all the electrical wiring shall be in accordance
with 527 CMR 12.00 Massachusetts electrical code
What size vent pipe is required with a 2 inch fill pipe --CORRECT 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 --CORRECT ANSWER--the ignition Transformer
drops out of the circuit once a flame is established
What are the elements are found in fuel oil number 2 --CORRECT ANSWER--
Carbon hydrogen oxygen and hydrocarbons
What is a BTU --CORRECT ANSWER--A British thermal unit is the amount of
heat needed to raise one pound of water 1 degree Fahrenheit
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,How many BTUs are in one gallon number 2 fuel oil --CORRECT ANSWER--
140,000 BTUs
What determines the gallons per hour of a nozzle --CORRECT ANSWER--
Manufacturer ,the bore size, pump pressure or Orphus
What is a series circuit --CORRECT ANSWER--an electrical or piping circuit
where all of the current or fluid flows through the entire circuit
What is a degree day --CORRECT ANSWER--The average temp for the day -
65
What is the flash point of number 2 fuel oil --CORRECT ANSWER--115
degrees Fahrenheit
When does the law require a combustion efficiency test --CORRECT
ANSWER--During installation and maintenance
What controller shuts off the oil burner in the event of excessive temperature in
the appliance --CORRECT ANSWER--The high limit switch
What are the three functions of an oil pump --CORRECT ANSWER--1- filters
2- pressurizes 3- pumps fuel to the burner
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,How is an oil burner circuit wired --CORRECT ANSWER--In series on its own
circuit
How is oil flow adjusted in a rotary burner --CORRECT ANSWER--Constant
level and metering valve
What does InStep mean --CORRECT ANSWER--The stack relay is operating
properly
What is the voltage found at the TT terminals --CORRECT ANSWER--24 volts
What are the 8 steps of a no heat call --CORRECT ANSWER--1 talk to
customer 2 check tt.3 check to make sure an emergency switch is on 4check to
make sure there is oil in the tank 5 check to make sure the main power going to
the unit is on six check to make sure that tank shut off valve is open 7 know
whether the tank is located above or below the burner I know the type and style
of the system that is being used on a one or two pipe system
What is a cad cell --CORRECT ANSWER--A device containing condominium
sulfide used to prove the flame in oil burner furnace
How much air is needed to burn a gallon of number 2 fuel oil and why. --
CORRECT 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
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, What is the term InStep mean --CORRECT ANSWER--The stack relay is
operating correctly
What is normal pump pressure --CORRECT ANSWER--100 PSI
How is combustion achieved --CORRECT ANSWER--Atomization, air,
ignition.
What is primary air and secondary air --CORRECT ANSWER--Primary air, air
that is introduced to a furnace burner before the combustion process has taken
place. secondary air, air that is introduced to the furnace after combustion has
taken place and that supports combustion
How should an oil tank be supported --CORRECT ANSWER--It shall be
secured attached to a non-combustible supports
What is the wire gauge use an oil burner circuits --CORRECT ANSWER--14
gauge 15 amp fuse
How is combustion achieved --CORRECT ANSWER--Atomization ,air
,ignition.
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