Oil Burner study guide with complete
solutions
What is a cad cell? - Answer- Visual flame detector
What does "in-step" mean? - Answer- The primary control start circuit is closed
What is the voltage found at the TT terminals? - Answer- 24 volts
What are the 8 steps on a no heat call? - Answer- Main fuse, oil burner fuse, customer
emergency switch, oil tank, oil valves, high limit, thermostat, primary control.
How much air is necessary to burn a gallon of #2 fuel oil? - Answer- 1540 cubic ft
What is the normal pump pressure? - Answer- 100 psi
How is combustion achieved? - Answer- Proper amount of oil, air, and ignition
What is primary air? - Answer- Air mixed with oil before the nozzle. It is the atomizing air
found on in low pressure burners.
What is secondary air? - Answer- Fan air
Does firbebrick come in different heat ratings? - Answer- Yes
How should an oil tank be supported? - Answer- Rigid, non-combustable supports
What is the wire gauged used on oil burner circuits? - Answer- 14 gauge min
How is an oil burner wired? - Answer- Series; intermittent or interrupted.
What does intermittent mean? - Answer- The transformers stays on throughout the
burner cycle
What does interrupted mean? - Answer- The transformer drops out after flame is
established.
Who approves oil burners in MA? - Answer- Any approved national testing lab
What does the term Marshall mean? - Answer- State Fire Marshall
What size vent pipe is required with a 2 inch fill pipe? - Answer- 2" min
, Can a vent pipe on an oil tank be smaller than the fill? - Answer- No, it can be larger but
not smaller
What is the minimum size of vent and fill pipes? - Answer- 1 1/4"
Explain interrupted ignition - Answer- Transformer drops out after the flame is
established
What permits are available? - Answer- Install, store oil, and tank removal
What are the elements found in fuel oil? - Answer- 85% Carbon and 15% Hydrogen
What is fuel oil? - Answer- Hydro-carbon
How must fuel oil be prepared for combustion? - Answer- It is atomized or vaporized
and mixed with air
What is a BTU? - Answer- The amount of heat necessary to rain 1 lb of water 1 degree
Fahrenheit
How many BTU's are in a gallon of #2 fuel oil? - Answer- 140,000
What determines the GPH of a nozzle? - Answer- The orifice
What is a series circuit? - Answer- the current has only one path to travel
What is a degree day? - Answer- 65 degrees F minus the daily average temp
What is the flash point of #2 fuel oil? - Answer- 110 degrees Fahrenheit
Can materials other than steel be used for fuel oil tanks? - Answer- Yes, if approved
What does the word "approved" mean? - Answer- Accepted b y the Marshall of by the
laboratory which is accepted by the Marshall
When is a combustion efficiency test required by law? - Answer- After installs and
routine maintenances
What control shorts off the oil burner in the event of excessive temp in the appliance -
Answer- High limit
Name 3 functions of an oil pump? - Answer- Pick-up, pressurize, and strain oil
How is an oil burner wired - Answer- Intermittent or interrupted
How is an oil burner circuit wired? - Answer- Series
solutions
What is a cad cell? - Answer- Visual flame detector
What does "in-step" mean? - Answer- The primary control start circuit is closed
What is the voltage found at the TT terminals? - Answer- 24 volts
What are the 8 steps on a no heat call? - Answer- Main fuse, oil burner fuse, customer
emergency switch, oil tank, oil valves, high limit, thermostat, primary control.
How much air is necessary to burn a gallon of #2 fuel oil? - Answer- 1540 cubic ft
What is the normal pump pressure? - Answer- 100 psi
How is combustion achieved? - Answer- Proper amount of oil, air, and ignition
What is primary air? - Answer- Air mixed with oil before the nozzle. It is the atomizing air
found on in low pressure burners.
What is secondary air? - Answer- Fan air
Does firbebrick come in different heat ratings? - Answer- Yes
How should an oil tank be supported? - Answer- Rigid, non-combustable supports
What is the wire gauged used on oil burner circuits? - Answer- 14 gauge min
How is an oil burner wired? - Answer- Series; intermittent or interrupted.
What does intermittent mean? - Answer- The transformers stays on throughout the
burner cycle
What does interrupted mean? - Answer- The transformer drops out after flame is
established.
Who approves oil burners in MA? - Answer- Any approved national testing lab
What does the term Marshall mean? - Answer- State Fire Marshall
What size vent pipe is required with a 2 inch fill pipe? - Answer- 2" min
, Can a vent pipe on an oil tank be smaller than the fill? - Answer- No, it can be larger but
not smaller
What is the minimum size of vent and fill pipes? - Answer- 1 1/4"
Explain interrupted ignition - Answer- Transformer drops out after the flame is
established
What permits are available? - Answer- Install, store oil, and tank removal
What are the elements found in fuel oil? - Answer- 85% Carbon and 15% Hydrogen
What is fuel oil? - Answer- Hydro-carbon
How must fuel oil be prepared for combustion? - Answer- It is atomized or vaporized
and mixed with air
What is a BTU? - Answer- The amount of heat necessary to rain 1 lb of water 1 degree
Fahrenheit
How many BTU's are in a gallon of #2 fuel oil? - Answer- 140,000
What determines the GPH of a nozzle? - Answer- The orifice
What is a series circuit? - Answer- the current has only one path to travel
What is a degree day? - Answer- 65 degrees F minus the daily average temp
What is the flash point of #2 fuel oil? - Answer- 110 degrees Fahrenheit
Can materials other than steel be used for fuel oil tanks? - Answer- Yes, if approved
What does the word "approved" mean? - Answer- Accepted b y the Marshall of by the
laboratory which is accepted by the Marshall
When is a combustion efficiency test required by law? - Answer- After installs and
routine maintenances
What control shorts off the oil burner in the event of excessive temp in the appliance -
Answer- High limit
Name 3 functions of an oil pump? - Answer- Pick-up, pressurize, and strain oil
How is an oil burner wired - Answer- Intermittent or interrupted
How is an oil burner circuit wired? - Answer- Series
