Oil Burner License Exam Questions With Verified Answer|A Graded

Oil Burner License Exam Questions With
Verified Answer|A Graded
Oil lines that are buried in concrete should: - AnswerBe sleeved in non-metallic pipe

.We install oil safety valves and oil pressure reducing valves to: - AnswerReduce the
head pressure at the pump and prevent the tank from siphoning in the event of a
suction line leak

.One advantage of a two stage fuel unit on a one pipe system application is: -
AnswerThere are no advantages

.If the vacuum gauge reading is substantially above the calculated reading with the
burner running, the cause could be: - AnswerRestriction in supply line

.Pulsating oil pump pressure and a pulsating fire could be caused by: - AnswerAir leaks
in the suction line

.The flow rate stamped on the nozzle is based on what pressure? - Answer100 PSI

.Increasing the fuel pump pressure will: - AnswerIncrease the flow rate

.One gallon of #2 oil contains approximately: - Answer140,000 BTU's

.Dirt or lint build-up in the bevel of the burner fan blades will: - AnswerReduce the
amount of combustion air

.To change the air ratio for different firing rates with an adjustable head burner, you: -
AnswerAdjust the position of the drawer assembly in the air tube

.One advantage of high static pressure burners is: - AnswerThey enable boiler and
furnace manufacturers to design more efficient heat exchangers

.The key final adjustment for most oil burners is: - AnswerCombustion air

.All petroleum products are chemical compounds of: - AnswerCarbon and hydrogen

.To ensure clean, uncontaminated fuel reaches the oil burner: - Answer- Install tanks
properly
- Regularly inspect them and fix minor defects before they lead to major problems
- Install a quality oil filter

.Water in oil tanks come from: - Answer- Condensation
- On outside tanks-broken tank gauges, loose or missing fill and vent caps

, - Failing to drain water from a tank before installation

.When installing a tank be sure: - Answer- The fill and vent lines are pitched downwards
towards the tank
- To install a vent alarm and a tank gauge
- To install an oil filter and a fusible valve where required

.Oil lines buried in concrete should be: - AnswerSleeved in plastic or PVC pipe with no
fittings below the floor

.The purpose of fuel units (oil pumps) is: - Answer- Lift oil from the tank to the burner
- Prevent contaminants that passed the external oil filter from clogging the nozzle
- Deliver oil at a constant and regulated pressure to the nozzle

.True or False:
When replacing the nozzle to increase the spray pattern the electrodes must be
adjusted - AnswerFalse

.The fusible link melts at what temperature? - Answer165

.When checking for fuel line leaks: - AnswerVacuum check first

.True or False:
When the thermostat calls for heat, the burner and blower start at the same time? -
AnswerFalse

.Boiler water limit control indicates? - AnswerPressure and Temperature

.A siphon is used to prevent _________ from entering the control? - AnswerSteam

.The flow of natural chimney draft is caused by? - AnswerNegative pressure

.True or False:
Power venters should be installed closest to the exterior wall? - AnswerTrue

.Unconfined space - AnswerTotal BTU's Div 1000 x 50

.All fill and vent piping shall be made of: - Answer- Steel
- Brass
- Pipe-malleable

.Piping used in the installation of oil burners? - Answer3/8 (1/2 O.D.)

.LWCO are required on all steam and water boilers over ______________________
BTU's - Answer400,000