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MASSACHUSETTS OIL BURNER STUDY
GUIDE EXAM | QUESTIONS & ANSWERS
(VERIFIED) | LATEST UPDATE | GRADED
A+
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 What is normal pump pressure Correct answer: 100 PSI How is combustion achieved Correct answer: Atomization, air, ignition. What is primary air and secondary air Correct answer: Primary air, air that is introduced to a furnace burner before the combustion process has taken place. secondary air, air that is introduced to the furnace after combustion has taken place and that supports combustion How should an oil tank be supported Correct answer: It shall be secured attached to a non-combustible supports What is the wire gauge use an oil burner circuits Correct answer: 14 gauge 15 amp fuse
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. What is the minimum size oil line for residential burners Correct answer: 3/8 inch How is safety timing checked on a stack relay switch Correct answer: Remove the stack relay from the duck and let it run .it should shut off in 45 seconds. What is the safety lockout time on Burner firing under 3 gallons per hour Correct answer: 45 seconds
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 done to install an additional fuel tank in a building that already has a tank holding 1320 gallons Correct answer: They must have a firewall around them What must be done with the bypass plug on a two pipe system and on a one pipe system Correct answer: On a one pipe system. the bypass plug must be removed .on a two pipe system the bypass must be installed. What is a bypass plug Correct answer: A 1/16 inch plug to convert 1 pipe to a 2 pipe system
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. 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 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
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 What causes a whining sound in a pump Correct answer: High vacuum pressure. (it must be air bound, too much air in the line.) line needs to be bled out. What should the smoke test before a properly tuned Appliance Correct answer: Zero two a Trace What is a sword Correct answer: A clean device that is a three to four foot long with a handle it also has a saw blade looking thing on the other end is used in tight spaces or brushes can't reach What is the purpose of a reverse acting control
Correct answer: To prevent cold water from being circulated on cold start How is a safety lockout determined on a stack switch without removing it from its holder Correct answer: Remove the third terminal Is CO2 test determines Correct answer: The percentage of carbon dioxide in the flue gas When Shall steam heating boiler and a hot water boiler require inspection by the commissioner of mass Dept of Public Safety before it is put into service Correct answer: Any time a permit is pulled to install or alter a burner 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
What kind of valves are needed at the tank and pump Correct answer: Firematics automatic shut-off valves Where is the solenoid valve installed and how is it wired Correct answer: Nozzle line or port in parallel with Burner motor What are three types of pressure regulating valve Correct answer: Pressure control ,(water heater hydronic )fuel pump ,pressure relief valve what would cause end cone burn off Correct answer: Too much back pressure How is a cut-off test taken on an oil pump Correct answer: Hook up gauge and shut off the burner .it should hold 80% of the pressure. pressure should drop no more than 10 to 15 psi How long can flexible conduit be on an oil burner Correct answer: 6 feet What would too much air do to the efficiency of an appliance Correct answer: It would lower the efficiency by pushing the heat up the chimney
What effect would cut down on excess air have on co2 percentage Correct answer: It would increase CO2 readings 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: 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 should outside tanks be mounted Correct answer: On a concrete slab 4 inches deep and extending 8 inches Beyond perimeter of tank How long can vent pipes be Correct answer: A minimum of 3 feet above grade How should return lines be connected to an exposed oil tank Correct answer: At the top of the tank Can an overflow pipe from the auxiliary tank have a valve or obstruction Correct answer: No Are compression fittings allowed on oil lines
Correct answer: No What is the difference between an auxiliary tank and Supply tank Correct answer: Supply tank is the primary tank the auxiliary tank is a secondary tank What is the purpose of Form 1 Correct answer: An application for a permit to install or alter oil burning equipment Can stack switches be used as a primary control Correct answer: Yes 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
