Massachusetts Oil Burner Study Guide Questions And Answers Rated A+

What is the voltage found at the TT terminals - ANS 24 volts What are the 8 steps of a no heat call - ANS 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 - ANS 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. - ANS 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 - ANS The stack relay is operating correctly What is normal pump pressure - ANS 100 PSI How is combustion achieved - ANS Atomization, air, ignition. What is primary air and secondary air - ANS 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 - ANS It shall be secured attached to a non-combustible supports What is the wire gauge use an oil burner circuits - ANS 14 gauge 15 amp fuse How is an oil burner wired - ANS 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 - ANS 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 - ANS the ignition Transformer drops out of the circuit once a flame is established What are the elements are found in fuel oil number 2 - ANS Carbon hydrogen oxygen and hydrocarbons What is a BTU - ANS 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 - ANS 140,000 BTUs What determines the gallons per hour of a nozzle - ANS Manufacturer ,the bore size, pump pressure or Orphus What is a series circuit - ANS an electrical or piping circuit where all of the current or fluid flows through the entire circuit What is a degree day - ANS The average temp for the day - 65 What is the flash point of number 2 fuel oil - ANS 115 degrees Fahrenheit When does the law require a combustion efficiency test - ANS During installation and maintenance What controller shuts off the oil burner in the event of excessive temperature in the appliance - ANS The high limit switch What are the three functions of an oil pump - ANS 1- filters 2- pressurizes 3- pumps fuel to the burner How is an oil burner circuit wired - ANS In series on its own circuit How is oil flow adjusted in a rotary burner - ANS Constant level and metering valve What does InStep mean - ANS The stack relay is operating properly How is combustion achieved - ANS Atomization ,air ,ignition. What is the minimum size oil line for residential burners - ANS 3/8 inch How is safety timing checked on a stack relay switch - ANS 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 - ANS 45 seconds What control devices are found on gravity feed burners - ANS Constant level valve When is a vent pipe required - ANS When the Supply tank is larger than 10 gallons What is the time limit for submitting certificate of completion - ANS Within 72 hours What kinds of joints are used on tank installations - ANS Swing joints Why are swing joints used on oil tank installations - ANS Shifting with in the tank What is the minimum distance that the burner can be from the tank - ANS 5 feet How many gallons of oil can be stored without a permit - ANS 10 gallons or less How much outside or replacement air is needed in a confined space - ANS 1 square inch for 2000 BTUs How much outside air or replacement air is needed in a boiler room in of tight Construction - ANS 1 square inch per 1000 BTUs What is the purpose of a heat anticipator - ANS It keeps the heat from over shooting Explain two different types of differentials used by thermostat - ANS In heating anticipates heat cold turns on compressor early what are the parts of an ignition assembly explain the function of each part what is the operating voltage - ANS 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 - ANS 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 - ANS Maintain boiler pressure clean sharp cut off and Supply oil. What must be done prior to installing an oil burner - ANS One must get a permit before installing an oil burner What are the four no heat call steps - ANS #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 - ANS No openings within two feet of vent What is the safety timing of a gas pilot ignition - ANS 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 - ANS 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 - ANS 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 - ANS A 1/16 inch plug to convert 1 pipe to a 2 pipe system What is a power burner - ANS Anything that's not a vaporizing oil burner Can a series 10 .3 wire thermostat be used with a 2-wire control? explain. - ANS Yes by jumping out the ground Can a series 80 dryer thermostat be wired into a 3-wire control - ANS No What is the greatest loss in a boiler - ANS Heat loss through the chimney How high on the wall should thermostat be installed - ANS 5 feet from the ground What must be checked while installing a Mercury bulb thermostat - ANS Must be checked to be level Why are low voltage thermostats use more than line voltage ones - ANS Safety What additional requirements are there for installing two or more tanks to a common discharge line - ANS 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 - ANS 567 inch by 2 inch vent going to outside what is the maximum voltage allowed for an oil burner circuit - ANS 150 volts Is carbon monoxide a desirable element in flue gases - ANS No How much air is needed to burn a gallon of fuel oil and why - ANS 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 - ANS An orange flame with red Flame tips Explain how a burner should be piped when the supply tank is located below the burner - ANS 2. Pipe dual stage with a bypass plug How should a stack switch be installed according to 527 CMR 4.00 - ANS With a flexible conduit Why should a stack switch not be rigidly mounted - ANS So you can pull it out and check it What are the purposes of a hot and cold contacts in stack switches - ANS Hot: as they heat up hot contacts close .Cold: normally closed switches open when heat heats them up. What is delayed ignition - ANS Fuel introduced to the combustion chamber before ignition What are two causes of delayed ignition - ANS The igniter electrodes or weak Transformer how is a cad cell primary control relay put in step - ANS The reset button On domestic oil tanks when is it necessary to install a vent alarm - ANS On tanks greater than 10 gallons Must every fuel tank have a gauge - ANS No .only on tanks greater than 10 gallons. What is the Pensky Martens test - ANS It's a Flashpoint test List all requirements for the fill and vent pipes - ANS 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 - ANS 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 - ANS It maintains the water temp in the boiler How are primary controls wired - ANS 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 - ANS Normal open switch that close on temperature rise to operate circulators What two problems will a vacuum test reveal - ANS 1 an air leak 2 restriction in the pipe What causes a whining sound in a pump - ANS 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 - ANS Zero two a Trace What is a sword - ANS 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 - ANS 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 - ANS Remove the third terminal Is CO2 test determines - ANS 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 - ANS 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 - ANS As close to the tank as possible supply-side How many seconds must have primary safety control shut off the burner - ANS Firing Less Than 3 gallons per hour 45 seconds firing 3 - 7 gallons per hour 15 seconds What is normal pump pressure - ANS 100 PSI What would be the advantages of a pump pressure higher than 100 PSI - ANS A cleaner burn What determines the size of a nozzle gallons per hour - ANS The maximum firing rate What is the purpose of a draft regulator - ANS To get the proper amount of air flow through the burner What are two ways to adjust draft - ANS Primary and secondary air ,and the draft regulator What is the purpose of a flow check valve - ANS 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 - ANS 12 gauge What are the two motor speeds - ANS 1725 and 3450 What is a drop lever valve - ANS Oil shut off What kind of valves are needed at the tank and pump - ANS Firematics automatic shut-off valves Where is the solenoid valve installed and how is it wired - ANS Nozzle line or port in parallel with Burner motor What are three types of pressure regulating valve - ANS Pressure control ,(water heater hydronic )fuel pump ,pressure relief valve what would cause end cone burn off - ANS Too much back pressure How is a cut-off test taken on an oil pump - ANS 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 - ANS 6 feet What would too much air do to the efficiency of an appliance - ANS It would lower the efficiency by pushing the heat up the chimney What effect would cut down on excess air have on co2 percentage - ANS It would increase CO2 readings The limit on a steam boiler operates by - ANS Pressure What is the approval of a 660 gallon tank - ANS Standard of UL 80 What is the approval of an oil tank larger than 660 gallons - ANS Standard of UL 142 Can two supply tanks be provided with only one fill pipe and vent pipe - ANS Yes Can Teflon tape be used on oil line connections - ANS No When must oil lines be in closed in a non-metallic sleeve - ANS When there is direct contact with concrete or Earth What is a gallon of oil - ANS 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 - ANS 2 hour rated fire resistive assemblies with openings protection and continuity How should a little tank of less than 10 gallons be installed - ANS 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 - ANS Towards the opening What is code with tank insulation inside garages - ANS Must have a Automotive protective barrier. Individual Supply tanks larger than 660 gallons shall be enclosed - ANS True How should an enclosed tank be supported - ANS 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 - ANS Must be protected from physical damage and protected from atmospheric corrosion How should outside tanks be mounted - ANS On a concrete slab 4 inches deep and extending 8 inches Beyond perimeter of tank How long can vent pipes be - ANS A minimum of 3 feet above grade How should return lines be connected to an exposed oil tank - ANS At the top of the tank Can an overflow pipe from the auxiliary tank have a valve or obstruction - ANS No Are compression fittings allowed on oil lines - ANS No What is the difference between an auxiliary tank and Supply tank - ANS Supply tank is the primary tank the auxiliary tank is a secondary tank What is the purpose of Form 1 - ANS An application for a permit to install or alter oil burning equipment Can stack switches be used as a primary control - ANS Yes How much time do you have to file an application after an emergency install - ANS 24 hours excluding weekends and holidays According to code when is a low water cut off required on a steam boiler - ANS Steam boilers and hot water boilers above 400000 BTUs According to code when is a low water cut off required on a water boiler - ANS Always On a no heat call why would the system run when you jump out the T&T terminals - ANS Bad thermostat or faulty wiring When are two thermal switches required - ANS When in a room with 12 foot ceilings are higher What is considered a good draft - ANS .01 - .02 inches of water column The primary control must be capable of reacting to - ANS The presence or absence of a flame The heat anticipator in a thermostat should be set to - ANS The amperage draw of the control unit Electrical current the amount of electricity flowing in a circuit is measured in - ANS Amps Advantage of PSC Motors over conventional split phase Motors is they - ANS Are protected by an overload switch Before using an electronic analyzer you must - ANS 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 - ANS The amperage draw of the burner motor to increase The electric force or potential similar to water pressure is - ANS Volts We use motor delay our post Purge technology for - ANS Cleaner shutdowns What causes puff backs - ANS Delayed faulty ignition In oil burner circuits the high limit must be - ANS line voltage and wired in series with the primary control The maximum steam pressure needed to operate a residential one pipe steam system is - ANS 2 PSI What problems does an oil film on the burner fan blades indicate - ANS Leaking pump seal It is best to connect fuel units as a one pipe system instead of a two pipe system because - ANS 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 - ANS Adjust the position of the drawer assembly in the air tube Dirt & Lint built up in the bevel of the burner fan blades will - ANS Reduce the amount of combustion air If the operating vacuum reading is significantly above the calculated vacuum you probably have a - ANS Clogged oil filter A fuel deaerator - ANS eliminates the need for a return line back to the tank All petroleum products are chemical compounds of - ANS 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 - ANS 5 - 6 inches To calculate combustion efficiency we must know - ANS The net stack temperature and excess air CO2 or O2 New CO2 reading of 7% at the bridge and 10% over the fire indicates - ANS Air is leaking into the furnace or boiler heat exchanger About 21% of air is made of - ANS Oxygen When the combustion gases get too cold - ANS The water vapor in the flue gases will condense Nozzle after drip can be caused by - ANS 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 - ANS The amount of excess air in the combustion gases The flow rate stamped on the nozzle is based on - ANS 100 PSI The hole in the flue pipe for combustion testing should be - ANS That's close to the breach of the heating unit as possible When using a pump type smoke tester 10 strokes are necessary to - ANS 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 - ANS Stack temperature smoke test and excess of air Power ventors use - ANS A fan to pull combustion products through the heat exchanger and out of the building Excessive draft drop through the heat exchanger indicates - ANS Heavy set and scale deposits in the heat exchanger Which condition affects nozzle spray droplet size - ANS Fuel pump pressure To burn 1 pound of fuel oil it takes how many pounds of air - ANS 14.4 pounds a layer of Ash 1/16 inch thick will increase fuel consumption by - ANS 4% When sizing a combustion chamber for fire rate of one gallon per hour you should provide A minimum floor space of - ANS Between 80 to 100 square inches It has been established that blank of steam pressure is sufficient operate any residential one pipe steam system - ANS 2 PSI In the early nineteen-hundreds the blank was invented to prevent water from leaving the steam boilers should a return line spring a leak - ANS The Hartford Loop One of the reasons a radiator on a two pipe system fails to heat may be - ANS A faulty thermostatic trap A steam pigtail should always be installed between the pressuretrol and the boiler too - ANS To Place a water seal between the boiler and the pressure troll. In a forced warm air system the return air duct size should never be less than blank of the air duct size - ANS 80% In a burner that has been properly set up and adjusted it will experience and occasional hard start of puff back the problem Maybe - ANS Low voltage input to the Transformer Power ventors that are installed inside of a structure should be - ANS Mounted as close to the outside wall as possible when the installation instructions call for a draft regulator with a power vent system it should be installed - ANS Between the boiler or furnace and a power Venter In a blank system the radiator Supply and return pipe are connected to one common main - ANS 1 pipe monoflo when using a blank heater it is necessary to maintain sufficient boiling water temperature to heat the domestic hot water - ANS Tankless heater One method for removing oil and dirt from a newly-installed steam boiler is to - ANS 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 - ANS The primary control will not energize Increasing the air intake in order to achieve a cleaner fire will also increase the - ANS Flue gas temperature A single stationary conductor in the flux of a permanent magnet will - ANS induce a current flow. An advantage of flame retention burner is - ANS 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. - ANS 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 - ANS Are faster and can create a printed record blank is a good insulator at 120 volts but a good conductor at 10000 volts - ANS Air When using an ohmmeter - ANS 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 - ANS Significantly reduces ignition component life What happens once a PSC motor starts - ANS 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 - ANS The air filters are dirty What happens when you decrease the amount of excess air - ANS Lowers that stack temperature & increases efficiency Why should we do a heat loss calculation - ANS 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