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P-99 / LOW PSI OIL BURNER OPERATOR
EXAM | QUESTIONS & ANSWERS
(VERIFIED) | LATEST UPDATE | GRADED
A+
All heating, combustion, and cooking equipment shall be provided with insulation or the building construction shall be fire protected, so that during operation the surface of combustible construction materials will not be raised to a temperature higher than ____. Correct answer: 170 ̊F Acceptance tests: Boilers shall not be placed in operation upon completion of construction until they have been ____ and an equipment use permit has been issued by the commissioner. Correct answer: Inspected and tested. Periodic boiler inspections: All boilers shall be inspected at least ____ including chimney connections. Correct answer: Once a year.
Owner's annual statement: The owner of each boiler that is subject to periodic inspections shall file an annual ____ with the commissioner, specifying the location of each boiler and arrangement for inspection. Correct answer: Written statement. What three things must be tested for any fuel burning and storage installation before the system can be operated? Correct answer: (1) Tightness of liquid fuel piping. (2) Tightness of fuel oil storage tanks. (3) Tightness of gas distribution piping. What are instruction cards for oil burning systems? Correct answer: Cards giving complete instructions for care and operation that are permanently located near the equipment. Every oil burning installation that is not fully automatic or requires preheating shall be operated by, or under, the direct supervision of a person holding a ____ issued by the fire commissioner. Correct answer: COF
Correct answer: Prohibited. Overflow pipes shall not be smaller in size than the ____ pipe. Correct answer: Supply. Oil is heated in storage tanks by coils using which three possible methods? Correct answer: (1) Low pressure hot water. (2) Steam (3) Electric heaters. A remote control for oil burner is provided to stop what? Correct answer: The flow of oil to any burner. What are the four safety controls that shall be installed with each automatic burner? Correct answer: (1) Oil temperature. (2) Ignition. (3) Stack or combustion. (4) High temperature or pressure.
No oil burner shall be installed unless it is connected to a ____. Correct answer: Chimney/smoke stack. What provides the supply of oil for combustion in the oil burner? Correct answer: Storage tank. What is the consistency of no. 6 fuel-oil in its normal condition? Correct answer: Thick and heavy. What must be done to no. 6 fuel-oil due to its consistency? Correct answer: It must be heated in the storage tank. Between what temperatures must no. 6 fuel-oil be maintained in the storage tank? Correct answer: 100 ̊- 130 ̊F What are the five commercial grade hydrocarbon oils? Correct answer: (1) No. 1 fuel-oil/range oil. (2) No. 2 fuel-oil/diesel oil. (3) No. 4 fuel-oil.
For manually operated burners using storage tanks with 60 gallons or less capacity, where can the remote control for oil burner be installed? Correct answer: In the supply lines between the tank and burner. Where in an oil pump discharge line shall a relief valve be installed? Correct answer: Between the pump and first shut-off valve. Dampers in flues shall be constructed so that they cannot completely ____ the passage of flue gases at any time. Correct answer: Cut off. Tight closing ____ may be installed with approved automatic draft and combustion controls. Correct answer: Dampers. If ventilation for the purpose of combustion is supplied mechanically, the ventilating system shall be ____ interlocked with the burner. Correct answer: Electrically. What removes most contaminants from the oil before it reaches the burner? Correct answer: Strainer/filter. What is present in the fuel-oil coming from the storage tank.
Correct answer: Dirt and sediment. What circulates the oil throughout the system? Correct answer: Suction line. Which device measures pressure below atmospheric pressure? Correct answer: Vacuum gauge. What do excessive vacuum readings indicate? Correct answer: That there is an obstruction in the suction line. What can be done to stop the oil flow in the event of excessive vacuum readings? Correct answer: Close the shut-off valve. What device heats the oil further before it enters the burner for combustion? Correct answer: Pre-heater. Between what temperatures does the pre-heater bring the oil to? Correct answer: 160° - 180°F What two things are made easier by pre-heating the oil? Correct answer: (1) Circulation.
Correct answer: Heaters. What is the chemical union of oxygen with the hydrogen and carbon in fuel-oil? Correct answer: Combustion. The two principal elements of fuel-oil are ____. Correct answer: Hydrogen and carbon. Oil is a liquid fuel and as such will not ____. It must be changed to a gas or vapor to support combustion. Correct answer: Burn. Which device accelerates the change of liquid fuel to a vapor that can be mixed with air and burned. Correct answer: Oil burner. In low pressure oil burners, the oil and air mixture is delivered to the nozzle at a pressure between ____. Correct answer: 1 - 15 psi. The air that contacts the oil prior to its leaving the nozzle is called ____. Correct answer: Primary air.
The introduction of air from the fan into the combustion chamber after the oil has left the nozzle is called ____. Correct answer: Secondary air. Oil burners require approximately ____ cubic feet of air per gallon of oil consumed. Correct answer: 2, The end product of complete combustion is ____. Correct answer: Carbon dioxide. The end product of incomplete combustion is ____. Correct answer: Carbon monoxide. Each time one pound of carbon is burned, ____ BTU of heat are liberated. Correct answer: 14, If the fuel is not supplied with the proper amount of oxygen, carbon monoxide will be produced, and only ____ BTU of heat are liberated. Correct answer: 4, A correctly adjusted oil burner flame will have an ____ colored flame body with small ____, slightly cloudy tips. Correct answer: Orange / Red
Heat in the combustion chamber that maintains the fire after the ignition is turned off is called ____. Correct answer: Reflected heat. The walls of the combustion chamber are made up of ____. Correct answer: Insulating firebrick. The heaviest commercial fuel-oil is ____. Correct answer: No. 6 fuel-oil. Which fuel-oil contains the most sediment? Correct answer: No. 6 fuel-oil. Heavy oil such as no. 6 fuel-oil is raised to about ____ before it enters the combustion process. Correct answer: 180°F A defective oil cut-off valve can lead to ____. Correct answer: After-drip. After-drip can lead to ____. Correct answer: Carbon deposit build-up.
What will dirty or damaged nozzles cause? Correct answer: Carbon deposit build-up. How often should no. 6 fuel-oil burner nozzles be cleaned? Correct answer: Daily. Blockage in the chimney or flue passage will cause the boiler room to become ____. Correct answer: Filled with smoke. Water in the fuel-oil or the wrong grade of fuel-oil will cause improper ____. Correct answer: Atomization. Burner puff-back is most often caused by a ____ in ignition. Correct answer: Delay. Pure white condensed steam that smells like fuel-oil is a condition that can cause ____. Correct answer: Puff-back. What 3 things must be done when puff-back conditions are present? Correct answer: (1) Shut off the burner. (2) Vent the area.
Correct answer: Shut-off valve. The atomizing cup/spinner is a device that breaks up fuel oil for proper ____. Correct answer: Combustion. Which low pressure control is mounted on the fan housing and will shut the oil burner down if no air exists for combustion? Correct answer: Vaporstat. A dangerous condition occurs when oil pumped to the combustion chamber is not properly ____. Correct answer: Atomized. The mixture of fuel oil and air is initially ignited by a gas pilot or electric ignition. After ignition, combustion is maintained in the combustion chamber by what? Correct answer: Retained heat. What is a photoelectric cell? Correct answer: A flame detection control device. Which device will shut down an oil burner if a flame is not visible? Correct answer: Photoelectric cell.
What operates the oil burner in the summer for domestic hot water needs? Correct answer: Aquastat. Which automatic, electric control for steam boilers will shut the burner down when the water is below a safe operating point? Correct answer: Low water cut-off. Which device indicates the water level of a steam boiler? Correct answer: Gauge glass. What should be visible in the gauge glass while the boiler operates? Correct answer: Water. The main combustion controller is called what? Correct answer: Stack switch/primary control. What does the stack switch/primary control do? Correct answer: Shut down the oil burner due to ignition failure or loss of flame in the combustion chamber. When does the stack switch/primary control operate? Correct answer: When there is no heat in the chimney/smoke stack.
Which valve is used to relieve excessive steam pressure? Correct answer: Safety valve/pop-off valve. Where is the safety valve/pop-off valve, located? Correct answer: On or near the top of the steam boiler. Which automatic, electric control will shut down the oil burner when steam pressure reaches a desired point? Correct answer: Pressuretrol. Which control will shut down a steam boiler if the pressure rises above the operating setting? Correct answer: Manual reset pressuretrol. At what RPM is oil atomized? Correct answer: 3,
