Journeyman Oil Questions and Graded Answers.
The use of furnace cement or other materials to seal a cracked heat exchanger or parts which
provide closure shall be for _________ repairs only. - 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: - -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 an indicator that you may have a plugged fuel filter? - -High vacuum on the oil
line.
-Tripped control.
What is the normal fuel pressure delivered to the nozzle? - -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. - .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. - 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? - 10.5 Hg
What is the radius of a pipe? - Half the diameter.
What is the diameter of a pipe? - Distance across the the pipe.
What is the circumference of a pipe? - 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? - Ture
Warm air ducts can have a heat loss as great as? - 40%
Direct vent heating units less than 50,000 BTU's may be vented _______ from a window. -
9" inches
One pound of water pressure is good for how many feet of height in pipe? - 2.3 feet
Can a chimney connector pass through a wall? - 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. - 75%
,The resistance of a chad cell should be around _______ ohms or more when sensing darkness. -
100,000 ohms
What is the main reason for chamberless firing? - Better heat transfer.
When doing an efficiency test, the burner must run for a minimum of 5 minutes to allow... -
The appliance to reach a steady state.
How many times do you pump a "wet" tester for a proper CO2 sample? - 18-20 times.
What are the normal ohms readings of a cad cell when the burner is running? - 300 - 1000
ohms.
Controls that are reverse acting operate in what manner? - Close on rise.
Name the function of a fan/limit switch on a warm air furnace. - -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? - True.
Vent pipes shall terminate no more than ____ feet from the fill pipe and at a point visible from
the fill point. - 12 feet.
All vent pipes shall terminate outside of a building at a point no less than ______ from any
building opening. - 2 feet.
What type of ignition turns off after flame is established? - Interrupted ignition.
, What type of ignition stays on while the burner is running? - Intermittent ignition.
To change the air ratio for different firing rates on an adjustable head burner, you must do this: -
Adjust the position of the draw assembly in the air tube.
Air is ____% oxygen, ____% nitrogen, and ____% other gases. - -20.9% oxygen.
-78% Nitrogen.
-1.1% other gases.
What is the normal fuel pump pressure of a high pressure oil burner? - -100psi for older
burners.
-140psi for newer burners.
Where fed directly from a storage oil tank, the fuel supply system shall be designed so that the
burner fuel unit operates with less than _____ in H.G. - 10 in H.G.
What is the purpose of the OSV devise? - -Limits pressure on burner pumps to a max
3psi.
-Automatic shut off if line is broken.
What is the maximum running vacuum for a single stage fuel pump? - 6" H.G.
If the top of the oil supply source is more than __(1)__ feet above the fuel unit you need to install
a __(2)__ valve.
The NFPA rating for the head pressure on a fuel unit is only __(3)__ PSI, about __(4)__ feet of
head.
If the tank head is greater than __(5)__ feet, the supply oil pressure may exceed __(6)__ PSI, and
therefore, shorten shaft seal life.
A __(7)__ valve or __(8)__ valve should be used in the oil supply line. - 1.) 8 Feet
2.) OSV valve
The use of furnace cement or other materials to seal a cracked heat exchanger or parts which
provide closure shall be for _________ repairs only. - 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: - -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 an indicator that you may have a plugged fuel filter? - -High vacuum on the oil
line.
-Tripped control.
What is the normal fuel pressure delivered to the nozzle? - -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. - .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. - 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? - 10.5 Hg
What is the radius of a pipe? - Half the diameter.
What is the diameter of a pipe? - Distance across the the pipe.
What is the circumference of a pipe? - 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? - Ture
Warm air ducts can have a heat loss as great as? - 40%
Direct vent heating units less than 50,000 BTU's may be vented _______ from a window. -
9" inches
One pound of water pressure is good for how many feet of height in pipe? - 2.3 feet
Can a chimney connector pass through a wall? - 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. - 75%
,The resistance of a chad cell should be around _______ ohms or more when sensing darkness. -
100,000 ohms
What is the main reason for chamberless firing? - Better heat transfer.
When doing an efficiency test, the burner must run for a minimum of 5 minutes to allow... -
The appliance to reach a steady state.
How many times do you pump a "wet" tester for a proper CO2 sample? - 18-20 times.
What are the normal ohms readings of a cad cell when the burner is running? - 300 - 1000
ohms.
Controls that are reverse acting operate in what manner? - Close on rise.
Name the function of a fan/limit switch on a warm air furnace. - -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? - True.
Vent pipes shall terminate no more than ____ feet from the fill pipe and at a point visible from
the fill point. - 12 feet.
All vent pipes shall terminate outside of a building at a point no less than ______ from any
building opening. - 2 feet.
What type of ignition turns off after flame is established? - Interrupted ignition.
, What type of ignition stays on while the burner is running? - Intermittent ignition.
To change the air ratio for different firing rates on an adjustable head burner, you must do this: -
Adjust the position of the draw assembly in the air tube.
Air is ____% oxygen, ____% nitrogen, and ____% other gases. - -20.9% oxygen.
-78% Nitrogen.
-1.1% other gases.
What is the normal fuel pump pressure of a high pressure oil burner? - -100psi for older
burners.
-140psi for newer burners.
Where fed directly from a storage oil tank, the fuel supply system shall be designed so that the
burner fuel unit operates with less than _____ in H.G. - 10 in H.G.
What is the purpose of the OSV devise? - -Limits pressure on burner pumps to a max
3psi.
-Automatic shut off if line is broken.
What is the maximum running vacuum for a single stage fuel pump? - 6" H.G.
If the top of the oil supply source is more than __(1)__ feet above the fuel unit you need to install
a __(2)__ valve.
The NFPA rating for the head pressure on a fuel unit is only __(3)__ PSI, about __(4)__ feet of
head.
If the tank head is greater than __(5)__ feet, the supply oil pressure may exceed __(6)__ PSI, and
therefore, shorten shaft seal life.
A __(7)__ valve or __(8)__ valve should be used in the oil supply line. - 1.) 8 Feet
2.) OSV valve
