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MASSACHUSETTS OIL BURNER LICENSE
EXAM AND PRACTICE EXAM QUESTIONS
AND CORRECT ANSWERS (ALREADY
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MASSACHUSETTS OIL BURNER LICENSE EXAM
What are the purposes of a hot and cold contacts in stack switches ------ CORRECT ANSWER---------------Hot: as they heat up hot contacts close .Cold: normally closed switches open when heat heats them up. What is delayed ignition ------CORRECT ANSWER---------------Fuel introduced to the combustion chamber before ignition What are two causes of delayed ignition ------CORRECT ANSWER----------- ----The igniter electrodes or weak Transformer how is a cad cell primary control relay put in step ------CORRECT ANSWER---------------The reset button On domestic oil tanks when is it necessary to install a vent alarm ------ CORRECT ANSWER---------------On tanks greater than 10 gallons Must every fuel tank have a gauge ------CORRECT ANSWER--------------- No .only on tanks greater than 10 gallons.
What is the Pensky Martens test ------CORRECT ANSWER---------------It's a Flashpoint test List all requirements for the fill and vent pipes ------CORRECT ANSWER---- -----------Swing joints on the fill pipe minimum of one and one-quarter inch and the vent has to be as large or larger than the fill. vent must be two feet away from any opening in the house and it must be three feet off grade List all the devices necessary for safe operation of a forced hot water system with domestic start from the fuse box - -----CORRECT ANSWER----- ----------Fuse box emergency switch thermal cut-out service which limit switch primary control What is a low limit used for on a steam boiler or hot water boiler ------ CORRECT ANSWER---------------It maintains the water temp in the boiler How are primary controls wired ------CORRECT ANSWER---------------L Black L2 white Terminal 3 goes to the burner motor Terminal 4 goes to interrupted ignition all must be flexible What is a reverse acting aquastat used for on a hot water boiler ------ CORRECT ANSWER---------------Normal open switch that close on temperature rise to operate circulators What two problems will a vacuum test reveal ------CORRECT ANSWER----- ---------- 1 an air leak 2 restriction in the pipe
Where is the check valve installed on a two pipe system when there is a lift situation ------CORRECT ANSWER---------------As close to the tank as possible supply-side How many seconds must have primary safety control shut off the burner --- ---CORRECT ANSWER---------------Firing Less Than 3 gallons per hour 45 seconds firing 3 - 7 gallons per hour 15 seconds What is normal pump pressure ------CORRECT ANSWER--------------- 100 PSI What would be the advantages of a pump pressure higher than 100 PSI ---- --CORRECT ANSWER---------------A cleaner burn What determines the size of a nozzle gallons per hour ------CORRECT ANSWER---------------The maximum firing rate What is the purpose of a draft regulator ------CORRECT ANSWER------------ ---To get the proper amount of air flow through the burner What are two ways to adjust draft ------CORRECT ANSWER--------------- Primary and secondary air ,and the draft regulator
What is the purpose of a flow check valve ------CORRECT ANSWER--------- ------Make sure flow of water does not go into the Zone that's it is unwanted What is the minimum gauge of an above-ground tank ------CORRECT ANSWER---------------12 gauge What is the voltage found at the TT terminals ------CORRECT ANSWER---- -----------24 volts What are the 8 steps of a no heat call ------CORRECT ANSWER--------------
- 1 talk to customer 2 check tt.3 check to make sure an emergency switch is on 4check to make sure there is oil in the tank 5 check to make sure the main power going to the unit is on six check to make sure that tank shut off valve is open 7 know whether the tank is located above or below the burner I know the type and style of the system that is being used on a one or two pipe system What is a cad cell ------CORRECT ANSWER---------------A device containing condominium sulfide used to prove the flame in oil burner furnace How much air is needed to burn a gallon of number 2 fuel oil and why. ------ CORRECT ANSWER---------------In 2015 most oil burners are set up to burn with approximately 50% excess air because it would be dangerous to set up a burner for exactly the correct amount of air What is the term InStep mean ------CORRECT ANSWER---------------The stack relay is operating correctly
minimum the fill pipe in the state of Massachusetts is one and one quarter inch. Explain interrupted ignition ------CORRECT ANSWER---------------the ignition Transformer drops out of the circuit once a flame is established What are the elements are found in fuel oil number 2 ------CORRECT ANSWER---------------Carbon hydrogen oxygen and hydrocarbons What is a BTU ------CORRECT ANSWER---------------A British thermal unit is the amount of heat needed to raise one pound of water 1 degree Fahrenheit How many BTUs are in one gallon number 2 fuel oil ------CORRECT ANSWER---------------140,000 BTUs What determines the gallons per hour of a nozzle ------CORRECT ANSWER---------------Manufacturer ,the bore size, pump pressure or Orphus What is a series circuit ------CORRECT ANSWER---------------an electrical or piping circuit where all of the current or fluid flows through the entire circuit What is a degree day ------CORRECT ANSWER---------------The average temp for the day - 65
What is the flash point of number 2 fuel oil ------CORRECT ANSWER-------- -------115 degrees Fahrenheit When does the law require a combustion efficiency test ------CORRECT ANSWER---------------During installation and maintenance What controller shuts off the oil burner in the event of excessive temperature in the appliance ------CORRECT ANSWER---------------The high limit switch What are the three functions of an oil pump ------CORRECT ANSWER------- -------- 1 - filters 2- pressurizes 3- pumps fuel to the burner How is an oil burner circuit wired ------CORRECT ANSWER---------------In series on its own circuit How is oil flow adjusted in a rotary burner ------CORRECT ANSWER--------- ------Constant level and metering valve What does InStep mean - -----CORRECT ANSWER---------------The stack relay is operating properly How is combustion achieved ------CORRECT ANSWER--------------- Atomization ,air ,ignition.
Why are swing joints used on oil tank installations ------CORRECT ANSWER---------------Shifting with in the tank What is the minimum distance that the burner can be from the tank ------ CORRECT ANSWER---------------5 feet How many gallons of oil can be stored without a permit ------CORRECT ANSWER---------------10 gallons or less How much outside or replacement air is needed in a confined space ------ CORRECT ANSWER---------------1 square inch for 2000 BTUs How much outside air or replacement air is needed in a boiler room in of tight Construction ------CORRECT ANSWER---------------1 square inch per 1000 BTUs What is the purpose of a heat anticipator ------CORRECT ANSWER---------- -----It keeps the heat from over shooting Explain two different types of differentials used by thermostat ------ CORRECT ANSWER---------------In heating anticipates heat leftover.in cold turns on compressor early what are the parts of an ignition assembly explain the function of each part what is the operating voltage ------CORRECT ANSWER---------------
Electrode :spark to ignite fuel. Transformer: step up from 120 volts to 14000 hundred volts. porcelain are insulators. When does code require low water cutoff ------CORRECT ANSWER---------- -----Always on a steam boiler ,and when hot water heater has an input rating of 400,000 BTUs an hour or greater What are the three functions of a pressure regulating valve on an oil pump - -----CORRECT ANSWER---------------Maintain boiler pressure clean sharp cut off and Supply oil. What must be done prior to installing an oil burner ------CORRECT ANSWER---------------One must get a permit before installing an oil burner What are the four no heat call steps ------CORRECT ANSWER--------------- #1Oil check#2 fuse breaker#3 emergency switch#4 power What are the requirements for oil fuel vent pipes that terminate outside of the building ------CORRECT ANSWER---------------No openings within two feet of vent What is the safety timing of a gas pilot ignition ------CORRECT ANSWER--- ------------15 seconds or less
What must be checked while installing a Mercury bulb thermostat ------ CORRECT ANSWER---------------Must be checked to be level Why are low voltage thermostats use more than line voltage ones ------ CORRECT ANSWER---------------Safety What additional requirements are there for installing two or more tanks to a common discharge line ------CORRECT ANSWER---------------They must be on a common slab at the same height and secure to one another 6 oil burners have been installed in a large room which is of tight construction and which must be kept closed at all times there is decidedly not enough combustion air for proper burner operation there burner sizes are 1.35 gallons per hour under these conditions what is the minimum free area of an opening connecting to the outdoors which must be provided -----
- CORRECT ANSWER---------------567 inch by 2 inch vent going to outside what is the maximum voltage allowed for an oil burner circuit ------ CORRECT ANSWER---------------150 volts Is carbon monoxide a desirable element in flue gases ------CORRECT ANSWER---------------No
How much air is needed to burn a gallon of fuel oil and why ------CORRECT ANSWER---------------14.4 plus 50% 192 feet cubed 154 CF to ensure enough oxygen When visually adjusting the flame on an oil burner you should try to get -----
- CORRECT ANSWER---------------An orange flame with red Flame tips Explain how a burner should be piped when the supply tank is located below the burner ------CORRECT ANSWER---------------2. Pipe dual stage with a bypass plug How should a stack switch be installed according to 527 CMR 4.00 ------ CORRECT ANSWER---------------With a flexible conduit Why should a stack switch not be rigidly mounted ------CORRECT ANSWER---------------So you can pull it out and check it What are the two motor speeds ------CORRECT ANSWER--------------- 1725 and 3450 What is a drop lever valve ------CORRECT ANSWER---------------Oil shut off What kind of valves are needed at the tank and pump ------CORRECT ANSWER---------------Firematics automatic shut-off valves
The limit on a steam boiler operates by ------CORRECT ANSWER------------ ---Pressure What is the approval of a 660 gallon tank ------CORRECT ANSWER---------- -----Standard of UL 80 What is the approval of an oil tank larger than 660 gallons ------CORRECT ANSWER---------------Standard of UL 142 Can two supply tanks be provided with only one fill pipe and vent pipe ------ CORRECT ANSWER---------------Yes Can Teflon tape be used on oil line connections ------CORRECT ANSWER- --------------No When must oil lines be in closed in a non-metallic sleeve ------CORRECT ANSWER---------------When there is direct contact with concrete or Earth What is a gallon of oil ------CORRECT ANSWER---------------The amount of oil to occupy one standard u.s. gallon 231 cubic inches at a temperature of 60 degrees Fahrenheit How should multiple oil tanks be separated from other portions of a building ------CORRECT ANSWER---------------2 hour rated fire resistive assemblies with openings protection and continuity
How should a little tank of less than 10 gallons be installed ------CORRECT ANSWER---------------At least 2 feet from any heat source When when installing a tank larger than 10 gallons capacity is provided with an opening in the bottom for use as a burner Supply connection or as a drain how should the tank be pitched ------CORRECT ANSWER------------- --Towards the opening What is code with tank insulation inside garages ------CORRECT ANSWER---------------Must have a Automotive protective barrier. Individual Supply tanks larger than 660 gallons shall be enclosed ------ CORRECT ANSWER---------------True How should an enclosed tank be supported ------CORRECT ANSWER------- --------By at least four inches above the floor by Masonry sadels at least 12 inch thick space not more than 8 feet on Center and extending the full width of the tank at least 15 inches clearance shall be provided between the tank and the top of the walls of the tank enclosure for purposes of inspection and repair What is code with outside tanks with an inside burner ------CORRECT ANSWER---------------Must be protected from physical damage and protected from atmospheric corrosion
How much time do you have to file an application after an emergency install ------CORRECT ANSWER---------------24 hours excluding weekends and holidays According to code when is a low water cut off required on a steam boiler --- ---CORRECT ANSWER---------------Steam boilers and hot water boilers above 400000 BTUs According to code when is a low water cut off required on a water boiler ---- --CORRECT ANSWER---------------Always On a no heat call why would the system run when you jump out the T&T terminals ------CORRECT ANSWER---------------Bad thermostat or faulty wiring When are two thermal switches required ------CORRECT ANSWER----------- ----When in a room with 12 foot ceilings are higher What is considered a good draft ------CORRECT ANSWER---------------.01 - .02 inches of water column The primary control must be capable of reacting to ------CORRECT ANSWER---------------The presence or absence of a flame
The heat anticipator in a thermostat should be set to ------CORRECT ANSWER---------------The amperage draw of the control unit Electrical current the amount of electricity flowing in a circuit is measured in ------CORRECT ANSWER---------------Amps Advantage of PSC Motors over conventional split phase Motors is they -----
- CORRECT ANSWER---------------Are protected by an overload switch Before using an electronic analyzer you must ------CORRECT ANSWER---- -----------Performers smoke test to be sure you're bringing at 0 to trace of smoke If a oil pumps gears are partially impeded by rust and difficult to turn it can cause ------CORRECT ANSWER---------------The amperage draw of the burner motor to increase The electric force or potential similar to water pressure is ------CORRECT ANSWER---------------Volts We use motor delay our post Purge technology for ------CORRECT ANSWER---------------Cleaner shutdowns What causes puff backs ------CORRECT ANSWER---------------Delayed faulty ignition
