OIL BURNER LICENSE EXAM | ALL QUESTIONS
AND CORRECT ANSWERS | GRADED A+ |
LATEST EXAM | VERIFIED ANSWERS
Which of the following can cause the oil burner overload protector to trip? --
----CORRECT ANSWER----------------Seized oil pump
-Seized burner motor
When testing an ignition transformer using the arc test method, the arc
should be a minimum of: ------CORRECT ANSWER---------------1/2"
The newer flame retention type combustion heads (flame retention rings): --
----CORRECT ANSWER---------------Are made out of stainless steel and
use air canes to create a tighter flame in the combustion chamber
When is a single stage oil pump used for a fuel oil system? ------CORRECT
ANSWER---------------When the fuel pump is located below the oil storage
tank
A one-pipe system: ------CORRECT ANSWER---------------Must NOT have
the bypass plug inserted in the pump.
When must a two-stage pump be used on an oil fired appliance? ------
CORRECT ANSWER---------------When the fuel pump is locate above the
oil storage tank
,A common breach draft for an oil appliance is: ------CORRECT ANSWER---
-------------.03 to -.06
What is the purpose of a delayed oil valve? ------CORRECT ANSWER-------
--------It delays oil pressure to the nozzle
Which spray pattern is most often used on nozzles rated below 1.0 GPH? --
----CORRECT ANSWER---------------Hollow
What is the purpose of the barometric damper used on an oil fired
appliance? ------CORRECT ANSWER---------------It controls the draft
through the system
What type of lubrication should be used in the burner motor of a high-
pressure gun burner? ------CORRECT ANSWER---------------SAE 20 oil
A properly set up and adjusted oil fire appliance should produce a CO2
measurement of: ------CORRECT ANSWER---------------10% to 12%
A common over the fire draft for an oil appliances ------CORRECT
ANSWER----------------.01 to -.02
Where is a delayed oil valve installed when used with a high pressure gun
burner? ------CORRECT ANSWER---------------After the oil pump before the
nozzle
,If the draft through an appliance is too high, what adjustment should be
made? ------CORRECT ANSWER---------------Adjust the barometric damper
to more of an open position
What does a high smoke reading indicate on an oil fired appliance? ------
CORRECT ANSWER---------------Not enough primary air
A stack thermometer commonly has a range from: ------CORRECT
ANSWER---------------200° to 1000°
For safety, if you oil storage tank cannot be installed: ------CORRECT
ANSWER---------------In the appliance room within 5' of the heating unit
According to NFPA 31-2001, what is the minimum size of the fill pipe on an
oil storage tank? ------CORRECT ANSWER---------------1 1/4"
Two properties of lightweight combustion chambers are: ------CORRECT
ANSWER---------------Rapid heat up and rapid coil down
WhT is the btu input rating of an oil fired appliance that uses a .65 GPH
nozzle? ------CORRECT ANSWER---------------91,000 BTU
, What are two problems that can cause a gun burner to operate below 100
psig? ------CORRECT ANSWER---------------A bad oil pump and plugged
inline filter
Which of the following can cause a weak spark in a high pressure gun
burner? ------CORRECT ANSWER----------------A cracked electrode
-A bad ignition transformer
When adjusting the electrode assembly, what is the measurement (height)
from the center of the nozzle to the tip of the electrode? ------CORRECT
ANSWER---------------1/2" to 9/16"
If a technician performs a combustion efficiency test on an oil fired
appliance and measures too high of a CO reading, which of the following
could cause this to happen? ------CORRECT ANSWER---------------Not
enough air for the fuel air mixture
A technician is servicing an oil fired appliance that uses a cad cell primary
control. The control locks out after a brief period of time. Which of the
following can cause this to happen? ------CORRECT ANSWER---------------
The cad cell does not sense light.
What is the code pertaining to oil burning equipment? ------CORRECT
ANSWER---------------527 cmr 4.0
An electrical switch that proves proper draft has been established is called
what? ------CORRECT ANSWER---------------Air proving switch
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