JOURNEYMAN OIL QUESTIONS AND
ANSWERS
What is an indicator that you may have a plugged fuel filter? ✅✅correct answ--High vacuum on
the oil line.
-Tripped control.
What is the normal fuel pressure delivered to the nozzle? ✅✅correct answ--Older burners =
100psi
-Newer burners= 140psi
Oil lines need about ______ to ______ Hg of vacuum for each foot we lift of oil. _____ inch of
vacuum for each 10 feet of horizontal run and ______ inch for a clean oil filter. ✅✅correct answ-
.75' to 1" Hg for each foot of lifted oil.
1" of vacuum for each 10 feet of horizontal run.
1/2" of vacuum for a clean oil filter.
To calculate the vacuum, figure about ____ of vacuum for each foot of oil lift, _____ of vacuum for
each _____ feet of horizontal run, and ______ for a clean oil filter. ✅✅correct answ-1" inch
1" inch
10' feet
1/2" inch
What is the calculated vacuum for a two stage pump operating with 7ft of lift and 30ft of horizontal
offset? ✅✅correct answ-10.5 Hg
The use of furnace cement or other materials to seal a cracked heat exchanger or parts which
provide closure shall be for _________ repairs only. ✅✅correct answ-Temporary repairs
If a fuel storage tank is permanently removed from service for whatever reason, the tank and all the
piping connected to it, including the outside fill and vent piping and any supply piping connected to
the appliance, shall be: ✅✅correct answ--Emptied of all liquid contents and sludge.
-Cleaned and rendered free of combustible vapors.
-Removed from premises or property.
,-Properly disposed of in accordance with all applicable local, state, and federal rules and regulations.
What is the radius of a pipe? ✅✅correct answ-Half the diameter.
What is the diameter of a pipe? ✅✅correct answ-Distance across the the pipe.
What is the circumference of a pipe? ✅✅correct answ-Diameter x PI
The technician may install the branch circuit overcurrent device, provided a space in the electrical
panel is available. The technician may also install the associated low voltage wiring provided its
power supply is fed from the heating branch circuit. True/False? ✅✅correct answ-Ture
Warm air ducts can have a heat loss as great as? ✅✅correct answ-40%
Direct vent heating units less than 50,000 BTU's may be vented _______ from a window.
✅✅correct answ-9" inches
One pound of water pressure is good for how many feet of height in pipe? ✅✅correct answ-2.3
feet
Can a chimney connector pass through a wall? ✅✅correct answ-Yes.
If all combustible materials in the wall are cut away from the chimney connector a sufficient distance
to provide the clearance required and a non combustible material is used to close up the opening.
Appliances requiring a negative chimney draft, the chimney connector shall be not longer than
______% of the portion of the chimney above the chimney connector inlet. ✅✅correct answ-75%
The resistance of a chad cell should be around _______ ohms or more when sensing darkness.
✅✅correct answ-100,000 ohms
What is the main reason for chamberless firing? ✅✅correct answ-Better heat transfer.
, When doing an efficiency test, the burner must run for a minimum of 5 minutes to allow...
✅✅correct answ-The appliance to reach a steady state.
How many times do you pump a "wet" tester for a proper CO2 sample? ✅✅correct answ-18-20
times.
What are the normal ohms readings of a cad cell when the burner is running? ✅✅correct answ-
300 - 1000 ohms.
Controls that are reverse acting operate in what manner? ✅✅correct answ-Close on rise.
Name the function of a fan/limit switch on a warm air furnace. ✅✅correct answ--Monitors
heat/temp.
-High limit.
On multi-unit installations the emergency and thermal electrical switches shall be wired in series
through individual unit relays so that if one switch is opened, all the equipment will be rendered
inoperable whenever the emergency switch is opened. True/false? ✅✅correct answ-True.
Vent pipes shall terminate no more than ____ feet from the fill pipe and at a point visible from the
fill point. ✅✅correct answ-12 feet.
All vent pipes shall terminate outside of a building at a point no less than ______ from any building
opening. ✅✅correct answ-2 feet.
What type of ignition turns off after flame is established? ✅✅correct answ-Interrupted ignition.
What type of ignition stays on while the burner is running? ✅✅correct answ-Intermittent ignition.
To change the air ratio for different firing rates on an adjustable head burner, you must do this:
✅✅correct answ-Adjust the position of the draw assembly in the air tube.
Air is ____% oxygen, ____% nitrogen, and ____% other gases. ✅✅correct answ--20.9% oxygen.
ANSWERS
What is an indicator that you may have a plugged fuel filter? ✅✅correct answ--High vacuum on
the oil line.
-Tripped control.
What is the normal fuel pressure delivered to the nozzle? ✅✅correct answ--Older burners =
100psi
-Newer burners= 140psi
Oil lines need about ______ to ______ Hg of vacuum for each foot we lift of oil. _____ inch of
vacuum for each 10 feet of horizontal run and ______ inch for a clean oil filter. ✅✅correct answ-
.75' to 1" Hg for each foot of lifted oil.
1" of vacuum for each 10 feet of horizontal run.
1/2" of vacuum for a clean oil filter.
To calculate the vacuum, figure about ____ of vacuum for each foot of oil lift, _____ of vacuum for
each _____ feet of horizontal run, and ______ for a clean oil filter. ✅✅correct answ-1" inch
1" inch
10' feet
1/2" inch
What is the calculated vacuum for a two stage pump operating with 7ft of lift and 30ft of horizontal
offset? ✅✅correct answ-10.5 Hg
The use of furnace cement or other materials to seal a cracked heat exchanger or parts which
provide closure shall be for _________ repairs only. ✅✅correct answ-Temporary repairs
If a fuel storage tank is permanently removed from service for whatever reason, the tank and all the
piping connected to it, including the outside fill and vent piping and any supply piping connected to
the appliance, shall be: ✅✅correct answ--Emptied of all liquid contents and sludge.
-Cleaned and rendered free of combustible vapors.
-Removed from premises or property.
,-Properly disposed of in accordance with all applicable local, state, and federal rules and regulations.
What is the radius of a pipe? ✅✅correct answ-Half the diameter.
What is the diameter of a pipe? ✅✅correct answ-Distance across the the pipe.
What is the circumference of a pipe? ✅✅correct answ-Diameter x PI
The technician may install the branch circuit overcurrent device, provided a space in the electrical
panel is available. The technician may also install the associated low voltage wiring provided its
power supply is fed from the heating branch circuit. True/False? ✅✅correct answ-Ture
Warm air ducts can have a heat loss as great as? ✅✅correct answ-40%
Direct vent heating units less than 50,000 BTU's may be vented _______ from a window.
✅✅correct answ-9" inches
One pound of water pressure is good for how many feet of height in pipe? ✅✅correct answ-2.3
feet
Can a chimney connector pass through a wall? ✅✅correct answ-Yes.
If all combustible materials in the wall are cut away from the chimney connector a sufficient distance
to provide the clearance required and a non combustible material is used to close up the opening.
Appliances requiring a negative chimney draft, the chimney connector shall be not longer than
______% of the portion of the chimney above the chimney connector inlet. ✅✅correct answ-75%
The resistance of a chad cell should be around _______ ohms or more when sensing darkness.
✅✅correct answ-100,000 ohms
What is the main reason for chamberless firing? ✅✅correct answ-Better heat transfer.
, When doing an efficiency test, the burner must run for a minimum of 5 minutes to allow...
✅✅correct answ-The appliance to reach a steady state.
How many times do you pump a "wet" tester for a proper CO2 sample? ✅✅correct answ-18-20
times.
What are the normal ohms readings of a cad cell when the burner is running? ✅✅correct answ-
300 - 1000 ohms.
Controls that are reverse acting operate in what manner? ✅✅correct answ-Close on rise.
Name the function of a fan/limit switch on a warm air furnace. ✅✅correct answ--Monitors
heat/temp.
-High limit.
On multi-unit installations the emergency and thermal electrical switches shall be wired in series
through individual unit relays so that if one switch is opened, all the equipment will be rendered
inoperable whenever the emergency switch is opened. True/false? ✅✅correct answ-True.
Vent pipes shall terminate no more than ____ feet from the fill pipe and at a point visible from the
fill point. ✅✅correct answ-12 feet.
All vent pipes shall terminate outside of a building at a point no less than ______ from any building
opening. ✅✅correct answ-2 feet.
What type of ignition turns off after flame is established? ✅✅correct answ-Interrupted ignition.
What type of ignition stays on while the burner is running? ✅✅correct answ-Intermittent ignition.
To change the air ratio for different firing rates on an adjustable head burner, you must do this:
✅✅correct answ-Adjust the position of the draw assembly in the air tube.
Air is ____% oxygen, ____% nitrogen, and ____% other gases. ✅✅correct answ--20.9% oxygen.
