OREGON HEATING OIL TANK SUPERVISOR
EXAMPREP TEST PAPER 2026 TESTED
QUESTIONS WITH FULL SOLUTION SET
◉ Nozzles are available with three different spray patterns: Answer:
Solid, semi-hollow, hollow
◉ What type of motor is used on a residential high pressure oil
burner. Answer: Split phase
◉ The most common motor speeds used in amerian made burners
are. Answer: 1725 and 3250 rpm
◉ If an oil has a high viscosity. Answer: It is a thicker oil
◉ A service technician performs a combustion efficiency test. There
is too much overfire draft. What can the technician do to decrease
the amount of draft in the system. Answer: Open the barometric
◉ A technician arrives on a service call for an oil fired furnace the
overfire draft reading is +.02" WC. And the breach is -.04" WC. What
could be the cause for this type of problem.. Answer: A plugged heat
exchanger
, ◉ While performing a combustion effiency test on an oil fired
furnace. A smoke reading of #5 is obtained. Which of the following
could cause this problem.. Answer: Insufficient combustion air
◉ What is a possible problem if an oil fired furnace has a stack
temperature reading over 750 degrees F. Answer: Excessive
combustion air.
◉ On a stack mount primary control system, the thermostat is set to
call for heat. The system sparks but does not fire. A further check
shows that the burner motor is not in operation. Which of the
following could be the cause of this problem?. Answer: The burner
motor could be defective.
◉ On a high pressure gun burner, what two problems can prevent oil
from flowing to the nozzle?. Answer: A broken couple in hand a
plugged inline filter.
◉ In what position should the cold contacts of a stack relay be at the
start up of an oil fired furnace?. Answer: The closed position.
◉ If a furnace has n oil delivery problem, what three tests are used
to troubleshoot the system?. Answer: Test oil pump pressure burner
motor operation and the nozzle assembly.
EXAMPREP TEST PAPER 2026 TESTED
QUESTIONS WITH FULL SOLUTION SET
◉ Nozzles are available with three different spray patterns: Answer:
Solid, semi-hollow, hollow
◉ What type of motor is used on a residential high pressure oil
burner. Answer: Split phase
◉ The most common motor speeds used in amerian made burners
are. Answer: 1725 and 3250 rpm
◉ If an oil has a high viscosity. Answer: It is a thicker oil
◉ A service technician performs a combustion efficiency test. There
is too much overfire draft. What can the technician do to decrease
the amount of draft in the system. Answer: Open the barometric
◉ A technician arrives on a service call for an oil fired furnace the
overfire draft reading is +.02" WC. And the breach is -.04" WC. What
could be the cause for this type of problem.. Answer: A plugged heat
exchanger
, ◉ While performing a combustion effiency test on an oil fired
furnace. A smoke reading of #5 is obtained. Which of the following
could cause this problem.. Answer: Insufficient combustion air
◉ What is a possible problem if an oil fired furnace has a stack
temperature reading over 750 degrees F. Answer: Excessive
combustion air.
◉ On a stack mount primary control system, the thermostat is set to
call for heat. The system sparks but does not fire. A further check
shows that the burner motor is not in operation. Which of the
following could be the cause of this problem?. Answer: The burner
motor could be defective.
◉ On a high pressure gun burner, what two problems can prevent oil
from flowing to the nozzle?. Answer: A broken couple in hand a
plugged inline filter.
◉ In what position should the cold contacts of a stack relay be at the
start up of an oil fired furnace?. Answer: The closed position.
◉ If a furnace has n oil delivery problem, what three tests are used
to troubleshoot the system?. Answer: Test oil pump pressure burner
motor operation and the nozzle assembly.
