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Massachusetts oil burner Final study guide | Actual Questions and Answers
Latest Updated 2024/2025 (Graded A+)
What is the voltage found at the TT terminals - ✔✔24 volts What are the 8 steps of a no heat call - ✔✔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 - ✔✔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. - ✔✔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 - ✔✔The stack relay is operating correctly What is normal pump pressure - ✔✔100 PSI How is combustion achieved - ✔✔Atomization, air, ignition. What is primary air and secondary air - ✔✔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 - ✔✔It shall be secured attached to a non-combustible supports What is the wire gauge use an oil burner circuits - ✔✔14 gauge 15 amp fuse
How is an oil burner wired - ✔✔Shall be wired on its own circuit. All protective control and emergency devices shall be series connected in the grounded line conductors. all the electrical wiring shall be in accordance with 527 CMR 12.00 Massachusetts electrical code What size vent pipe is required with a 2 inch fill pipe - ✔✔A fill pipe shall not be greater than the vent pipe. The minimum the fill pipe in the state of Massachusetts is one and one quarter inch. Explain interrupted ignition - ✔✔the ignition Transformer drops out of the circuit once a flame is established What are the elements are found in fuel oil number 2 - ✔✔Carbon hydrogen oxygen and hydrocarbons What is a BTU - ✔✔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 - ✔✔140,000 BTUs What determines the gallons per hour of a nozzle - ✔✔Manufacturer ,the bore size, pump pressure or Orphus What is a series circuit - ✔✔an electrical or piping circuit where all of the current or fluid flows through the entire circuit What is a degree day - ✔✔The average temp for the day - 65 What is the flash point of number 2 fuel oil - ✔✔115 degrees Fahrenheit When does the law require a combustion efficiency test - ✔✔During installation and maintenance
What is the minimum distance that the burner can be from the tank - ✔✔5 feet How many gallons of oil can be stored without a permit - ✔✔10 gallons or less How much outside or replacement air is needed in a confined space - ✔✔1 square inch for 2000 BTUs How much outside air or replacement air is needed in a boiler room in of tight Construction - ✔✔ 1 square inch per 1000 BTUs What is the purpose of a heat anticipator - ✔✔It keeps the heat from over shooting Explain two different types of differentials used by thermostat - ✔✔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 - ✔✔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 - ✔✔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 - ✔✔Maintain boiler pressure clean sharp cut off and Supply oil. What must be done prior to installing an oil burner - ✔✔One must get a permit before installing an oil burner What are the four no heat call steps - ✔✔#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 - ✔✔No openings within two feet of vent What is the safety timing of a gas pilot ignition - ✔✔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 - ✔✔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 - ✔✔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 - ✔✔A 1/16 inch plug to convert 1 pipe to a 2 pipe system What is a power burner - ✔✔Anything that's not a vaporizing oil burner Can a series 10 .3 wire thermostat be used with a 2-wire control? explain. - ✔✔Yes by jumping out the ground Can a series 80 dryer thermostat be wired into a 3-wire control - ✔✔No What is the greatest loss in a boiler - ✔✔Heat loss through the chimney How high on the wall should thermostat be installed - ✔✔5 feet from the ground What must be checked while installing a Mercury bulb thermostat - ✔✔Must be checked to be level Why are low voltage thermostats use more than line voltage ones - ✔✔Safety What additional requirements are there for installing two or more tanks to a common discharge line - ✔✔They must be on a common slab at the same height and secure to one another
how is a cad cell primary control relay put in step - ✔✔The reset button On domestic oil tanks when is it necessary to install a vent alarm - ✔✔On tanks greater than 10 gallons Must every fuel tank have a gauge - ✔✔No .only on tanks greater than 10 gallons. What is the Pensky Martens test - ✔✔It's a Flashpoint test List all requirements for the fill and vent pipes - ✔✔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 - ✔✔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 - ✔✔It maintains the water temp in the boiler How are primary controls wired - ✔✔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 - ✔✔Normal open switch that close on temperature rise to operate circulators What two problems will a vacuum test reveal - ✔✔1 an air leak 2 restriction in the pipe What causes a whining sound in a pump - ✔✔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 - ✔✔Zero two a Trace
What is a sword - ✔✔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 - ✔✔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 - ✔✔Remove the third terminal Is CO2 test determines - ✔✔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 - ✔✔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 - ✔✔As close to the tank as possible supply-side How many seconds must have primary safety control shut off the burner - ✔✔Firing Less Than 3 gallons per hour 45 seconds firing 3 - 7 gallons per hour 15 seconds What is normal pump pressure - ✔✔100 PSI What would be the advantages of a pump pressure higher than 100 PSI - ✔✔A cleaner burn What determines the size of a nozzle gallons per hour - ✔✔The maximum firing rate What is the purpose of a draft regulator - ✔✔To get the proper amount of air flow through the burner
The limit on a steam boiler operates by - ✔✔Pressure What is the approval of a 660 gallon tank - ✔✔Standard of UL 80 What is the approval of an oil tank larger than 660 gallons - ✔✔Standard of UL 142 Can two supply tanks be provided with only one fill pipe and vent pipe - ✔✔Yes Can Teflon tape be used on oil line connections - ✔✔No When must oil lines be in closed in a non-metallic sleeve - ✔✔When there is direct contact with concrete or Earth What is a gallon of oil - ✔✔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 - ✔✔2 hour rated fire resistive assemblies with openings protection and continuity How should a little tank of less than 10 gallons be installed - ✔✔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 - ✔✔Towards the opening What is code with tank insulation inside garages - ✔✔Must have a Automotive protective barrier. Individual Supply tanks larger than 660 gallons shall be enclosed - ✔✔True
How should an enclosed tank be supported - ✔✔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 - ✔✔Must be protected from physical damage and protected from atmospheric corrosion How should outside tanks be mounted - ✔✔On a concrete slab 4 inches deep and extending 8 inches Beyond perimeter of tank How long can vent pipes be - ✔✔A minimum of 3 feet above grade How should return lines be connected to an exposed oil tank - ✔✔At the top of the tank Can an overflow pipe from the auxiliary tank have a valve or obstruction - ✔✔No Are compression fittings allowed on oil lines - ✔✔No What is the difference between an auxiliary tank and Supply tank - ✔✔Supply tank is the primary tank the auxiliary tank is a secondary tank What is the purpose of Form 1 - ✔✔An application for a permit to install or alter oil burning equipment Can stack switches be used as a primary control - ✔✔Yes How much time do you have to file an application after an emergency install - ✔✔24 hours excluding weekends and holidays According to code when is a low water cut off required on a steam boiler - ✔✔Steam boilers and hot water boilers above 400000 BTUs
What causes puff backs - ✔✔Delayed faulty ignition In oil burner circuits the high limit must be - ✔✔line voltage and wired in series with the primary control The maximum steam pressure needed to operate a residential one pipe steam system is - ✔✔2 PSI What problems does an oil film on the burner fan blades indicate - ✔✔Leaking pump seal It is best to connect fuel units as a one pipe system instead of a two pipe system because - ✔✔One paper leads to longer filter life and eliminates worries about leaking return lines To change the air ratio for different firing rates with an adjustable head burner you - ✔✔Adjust the position of the drawer assembly in the air tube Dirt & Lint built up in the bevel of the burner fan blades will - ✔✔Reduce the amount of combustion air If the operating vacuum reading is significantly above the calculated vacuum you probably have a - ✔✔Clogged oil filter A fuel deaerator - ✔✔eliminates the need for a return line back to the tank All petroleum products are chemical compounds of - ✔✔Hydrogen and carbon If the oil level in the tank is 4 feet below the fuel unit and 10 feet away the approximate vacuum should be - ✔✔ 5 - 6 inches To calculate combustion efficiency we must know - ✔✔The net stack temperature and excess air CO2 or O
New CO2 reading of 7% at the bridge and 10% over the fire indicates - ✔✔Air is leaking into the furnace or boiler heat exchanger About 21% of air is made of - ✔✔Oxygen When the combustion gases get too cold - ✔✔The water vapor in the flue gases will condense Nozzle after drip can be caused by - ✔✔A defective pressure regulating valve. air in The Nozzle line. oil expansion in the nozzle line after shutdown. We use O2 and CO2 measurements to calculate - ✔✔The amount of excess air in the combustion gases The flow rate stamped on the nozzle is based on - ✔✔100 PSI The hole in the flue pipe for combustion testing should be - ✔✔That's close to the breach of the heating unit as possible When using a pump type smoke tester 10 strokes are necessary to - ✔✔Eliminate any moisture on the tester paper. clear tester air .draw the proper amount of fuel gas threw the paper. A combustion efficiency test includes measurements of - ✔✔Stack temperature smoke test and excess of air Power ventors use - ✔✔A fan to pull combustion products through the heat exchanger and out of the building Excessive draft drop through the heat exchanger indicates - ✔✔Heavy set and scale deposits in the heat exchanger Which condition affects nozzle spray droplet size - ✔✔Fuel pump pressure
In a blank system the radiator Supply and return pipe are connected to one common main - ✔✔1 pipe monoflo when using a blank heater it is necessary to maintain sufficient boiling water temperature to heat the domestic hot water - ✔✔Tankless heater One method for removing oil and dirt from a newly-installed steam boiler is to - ✔✔Skim the boiler through the nipple at the water level after a few days of operation If I cadcell is seeing light when a thermostat conneted to the terminal TT terminals calls for heat - ✔✔The primary control will not energize Increasing the air intake in order to achieve a cleaner fire will also increase the - ✔✔Flue gas temperature A single stationary conductor in the flux of a permanent magnet will - ✔✔induce a current flow. An advantage of flame retention burner is - ✔✔The high static pressure enables boilers and furnaces with tighter more efficient heat exchanger passages it is becoming more and more of a problem to get enough air to the burner because. - ✔✔less air gets into modern buildings because of new construction standards. better Windows and Doors .more insulation and weatherstripping. Compared to wet kits digital electronic conversion kits instruments are - ✔✔Are faster and can create a printed record blank is a good insulator at 120 volts but a good conductor at 10000 volts - ✔✔Air When using an ohmmeter - ✔✔Disconnect the hot and neutral wires from power source and discharge any capacity as they may be in the circuit to be tested
Energizing the ignition circuit during the entire burn cycle - ✔✔Significantly reduces ignition component life What happens once a PSC motor starts - ✔✔The capacitor the auxiliary windings and the mainliners remain in circuit while the motor is running why would the burner on a furnace short cycle off the high limit control - ✔✔The air filters are dirty What happens when you decrease the amount of excess air - ✔✔Lowers that stack temperature & increases efficiency Why should we do a heat loss calculation - ✔✔To match the boiler or furnace output to the heat load of the building to reduce off-cycle losses from oversizing to reduce cycling losses and increase run times
