Oil burner test Questions with 100%
Correct Answers
What is the largest exposed tank allowed in a building without a permit—
Correct Answer: 660 g
What is tank approval— Correct Answer: UL 80 UL 142
A supply tank shall be securely supported by ridged, non-combustible supports
to prevent settling, sliding or lifting. true or false— Correct Answer: True
What is the largest amount of oil that can be stored with exposed tanks?—
Correct Answer: 1320 g
What is the closest distance a supply tank can be to the burner— Correct
Answer: 5 ft
What is the gauge of a 275 g above ground tank— Correct Answer: 12 gauge
The maximum amount of fuel may be delivered without a permit to store in
effect provided that application has been made in accordance with code.
true or false— Correct Answer: True
Vent pipe for a 500 g tank should be— Correct Answer: 1 1/4"
A supply tank may be supported by any ridge support. true or false— Correct
Answer: False
Stack switch relays can no longer be used in installations or replacement
because— Correct Answer: Their lock-out time is no longer the code
requirement
,An oil safety valve should be used when burner pump is lifting oil. True or false—
Correct Answer: False
On a warm air furnace, the blower comes off and on in short cycles because—
Correct Answer: The fan on/off differential is less than 40°F
What could cause a steam boiler to flood— Correct Answer: Leaky tank less coil
Having to put water in a steam boiler once or twice a week is caused by—
Correct Answer: Weak return line, radiator vents leaking, boiler sprung a leak
Some radiators on a steam system do not heat up because— Correct Answer:
The radiator vents are clogged
On a hot water boiler the pressure is 30psi and the relief valve is open
because— Correct Answer: Leaky tankless coil, bad pressure reducing valve,
perforated tankless bladder
Some forced hot-water radiators are not heating because— Correct Answer:
Vent is clogged, radiators are air bound, radiator valves clogged shut
A cad-cell primary control can lock-out safety because— Correct Answer: Cad-
cell is dirty, Cad-cell is faulty, The cad-cell is not sensing flame
On a no heat call, a cad-cell primary control fired when TT is jumped out
because— Correct Answer: The thermostat or thermostat wired are no good
In-step means— Correct Answer: The primary control start circuit is closed
On a no heat call on a hot water system, the oil burner is off on high-limit, but
the circulator is not running because— Correct Answer: The reverse is open,
circulator motor burnt out, switching relay is faulty
, The burner operates but there is no combustion because— Correct Answer:
There is too much air
On a replacement steam boiler installation, you should pipe full-size risers to the
header. True or false— Correct Answer: False
What is the best way to remove surface oil?— Correct Answer: Skimming
Where should the water like normally be in the sight glass when the boiler is off—
Correct Answer: Center of the sight glass
What is the purpose of the automatic water feed on a steam boiler— Correct
Answer: To maintain a safe minimum water line
What is the purpose of the hartford loop— Correct Answer: To prevent siphoning
of the boiler
What is the normal cut in pressure of a residential steam boiler— Correct Answer:
1/2 psi
What is the purpose of an oil safety valve— Correct Answer: Prevents oil flow in
the event of a line rupture or excessive line inlet pressure
What does the term "approved" mean— Correct Answer: Recognized by a
nationally recognized texting lab
What is a safety control— Correct Answer: Any control used to prevent unsafe
operation of the uncontrolled equipment
What is a draft booster— Correct Answer: Power operated fan installed in the
chimney connector to increase natural draft
What is a "confined space?"— Correct Answer: Any space who's volume is less
than 50 cubic feet per 1000 BTU's of all fuel burning equipment
Correct Answers
What is the largest exposed tank allowed in a building without a permit—
Correct Answer: 660 g
What is tank approval— Correct Answer: UL 80 UL 142
A supply tank shall be securely supported by ridged, non-combustible supports
to prevent settling, sliding or lifting. true or false— Correct Answer: True
What is the largest amount of oil that can be stored with exposed tanks?—
Correct Answer: 1320 g
What is the closest distance a supply tank can be to the burner— Correct
Answer: 5 ft
What is the gauge of a 275 g above ground tank— Correct Answer: 12 gauge
The maximum amount of fuel may be delivered without a permit to store in
effect provided that application has been made in accordance with code.
true or false— Correct Answer: True
Vent pipe for a 500 g tank should be— Correct Answer: 1 1/4"
A supply tank may be supported by any ridge support. true or false— Correct
Answer: False
Stack switch relays can no longer be used in installations or replacement
because— Correct Answer: Their lock-out time is no longer the code
requirement
,An oil safety valve should be used when burner pump is lifting oil. True or false—
Correct Answer: False
On a warm air furnace, the blower comes off and on in short cycles because—
Correct Answer: The fan on/off differential is less than 40°F
What could cause a steam boiler to flood— Correct Answer: Leaky tank less coil
Having to put water in a steam boiler once or twice a week is caused by—
Correct Answer: Weak return line, radiator vents leaking, boiler sprung a leak
Some radiators on a steam system do not heat up because— Correct Answer:
The radiator vents are clogged
On a hot water boiler the pressure is 30psi and the relief valve is open
because— Correct Answer: Leaky tankless coil, bad pressure reducing valve,
perforated tankless bladder
Some forced hot-water radiators are not heating because— Correct Answer:
Vent is clogged, radiators are air bound, radiator valves clogged shut
A cad-cell primary control can lock-out safety because— Correct Answer: Cad-
cell is dirty, Cad-cell is faulty, The cad-cell is not sensing flame
On a no heat call, a cad-cell primary control fired when TT is jumped out
because— Correct Answer: The thermostat or thermostat wired are no good
In-step means— Correct Answer: The primary control start circuit is closed
On a no heat call on a hot water system, the oil burner is off on high-limit, but
the circulator is not running because— Correct Answer: The reverse is open,
circulator motor burnt out, switching relay is faulty
, The burner operates but there is no combustion because— Correct Answer:
There is too much air
On a replacement steam boiler installation, you should pipe full-size risers to the
header. True or false— Correct Answer: False
What is the best way to remove surface oil?— Correct Answer: Skimming
Where should the water like normally be in the sight glass when the boiler is off—
Correct Answer: Center of the sight glass
What is the purpose of the automatic water feed on a steam boiler— Correct
Answer: To maintain a safe minimum water line
What is the purpose of the hartford loop— Correct Answer: To prevent siphoning
of the boiler
What is the normal cut in pressure of a residential steam boiler— Correct Answer:
1/2 psi
What is the purpose of an oil safety valve— Correct Answer: Prevents oil flow in
the event of a line rupture or excessive line inlet pressure
What does the term "approved" mean— Correct Answer: Recognized by a
nationally recognized texting lab
What is a safety control— Correct Answer: Any control used to prevent unsafe
operation of the uncontrolled equipment
What is a draft booster— Correct Answer: Power operated fan installed in the
chimney connector to increase natural draft
What is a "confined space?"— Correct Answer: Any space who's volume is less
than 50 cubic feet per 1000 BTU's of all fuel burning equipment
