Exam (elaborations)
OIL BURNER LICENSE QUESTIONS AND ANSWERS
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OIL BURNER LICENSE QUESTIONS AND ANSWERS
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OIL BURNER LICENSE QUESTIONS AND ANSWERSWhat is the first thing a tech should do when arriving at a no combustion call? -
Answers- Ask how many times the customer reset the unit.
What is the best long term solution for preventing a clogged nozzle? - Answers- -
Remove any underground storage tanks.
-Install a quality oil filter.
-Cut the suction line 10" above the tank outlet to prevent sludge.
Hot water and steam valves are interchangeable. - Answers- False
When in the presence of a flame, a cad cell normally reads.. - Answers- 300-1000
ohms
If a pump is used to bring oil to a level higher than the tank, an oil safety valve is
required. - Answers- True
On a call where a hydronic heat system is putting out too much heat on the stack, the
issue may be.. - Answers- -Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
What is a power venter and what does it do? - Answers- An electrical device that sends
fluid gases into the chimney connector.
A burner in a confined space using 1 GPH of #2 fuel oil requires what size permanent
opening for combustion air? - Answers- 140"
The difference between an adjustable flame retention burner and a fixed flame retention
burner is? - Answers- Air inlets can be adjusted
Ignitor position can be adjusted
Fuel can be adjusted
Oil tank design, construction, installation and testing shall be in accordance with.. -
Answers- 527 CMR 9.0
Heat is a form of.. - Answers- Energy
If a burner is operational but the circulator pump isn't running.. - Answers- The pump
relay is not working correctly
A method of dealing with low viscosity/cold temps with #2 oil? - Answers- Increase
pump pressure/ decrease nozzle size
,What is needed at the outlet of an oil tank? - Answers- Thermal safety valve
Where do you obtain an installation permit for oil burners? - Answers- Fire Dept
How many Btu's approximately in 1 gal of #2 fuel oil? - Answers- 140,000 btu's
Solid state ignition is superior to spark because - Answers- It is not affected by reduced
voltage
What is an installation? - Answers- The complete setting in place, ready for operation,
of an oil burner appliance together with its accessories and equipment.
How far must a power vent terminate from an opening or window? - Answers- 4'
A pump in a one pipe system that is full of air can be self purged. - Answers- False
List the minimum size of an oil supply line. - Answers- 3/8"
A material with electrons so loose it allows voltage to pass with little or no resistance.. -
Answers- Is a conductor
If a high limit goes off, what does a low water switch do? - Answers- Maintains water
temperature
A high CO2 reading is caused by.. - Answers- Incomplete combustion
An often overlooked cause of a high CO2 reading is.. - Answers- Not enough
combustion air in the equipment room.
When multiple pumps are wired together in a heating system, they should be wired in.. -
Answers- parallel
In a series circuit.. - Answers- Current has one path.
When 2 burners are connected to the same chimney.. - Answers- Sufficient draft must
be obtained to operate both units.
The ignition transformer is located.. - Answers- In the primary control.
When safeties are wired in series one safety will affect the operation of the others. -
Answers- True
A stack switch is no longer allowed to be installed or replaced because.. - Answers- It's
safety cutout time is higher than what is now required.
, What is flashpoint an indicator of? - Answers- Minimum temperature oil will ignite but
not continue to burn.
What travels on the inside of the wire? - Answers- Volts
What does readily accessible mean pertaining to oil burning equipment? - Answers-
Capable of being reached easily and quickly for operation, maintenance or inspection.
What is the minimum vent pipe on an oil tank? - Answers- 1 1/4"
What causes corrosion on a flue pipe? - Answers- When the flue pipe is operating
below the dew point temperature.
What are the methods to prevent oil waxing? - Answers- Put additives in the fuel.
Add an oil line heater.
Cut with #1 fuel or kerosene.
What is the maximum tank size allowed inside unenclosed? - Answers- 660 gal
What is the purpose of a delayed oil valve? - Answers- Allows time for the oil pump to
get up to speed.
Delays oil flow to the nozzle.
On a call where a hydronic heat system is putting out too much heat, the issue could
be? - Answers- A shorted out thermostat.
When measuring a cad cell with the burner running and the ff terminals jumped out,
what should the cad cell reading be? - Answers- 1600 ohms
What are the possible causes of soot at or near the power venter? - Answers-
Incomplete combustion
What is a possible side effect of air in a nozzle line? - Answers- Soot
What is the cause if the cad cell is tripped on safety? - Answers- Dirty cad cell
Faulty cad cell
No flame present
If a boiler is running but the water temperature is low? - Answers- Undersized nozzle
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