Massachusetts oil burner study guide Questions and answers correct

Massachusetts oil burner study guide Questions and answers correct 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 controller shuts off the oil burner in the event of excessive temperature in the appliance The high limit switch What are the three functions of an oil pump 1- filters 2- pressurizes 3- pumps fuel to the burner How is an oil burner circuit wired In series on its own circuit How is oil flow adjusted in a rotary burner Constant level and metering valve What does InStep mean The stack relay is operating properly How is combustion achieved Atomization ,air ,ignition. What is the minimum size oil line for residential burners 3/8 inch How is safety timing checked on a stack relay switch 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 45 seconds What control devices are found on gravity feed burners Constant level valve When is a vent pipe required When the Supply tank is larger than 10 gallons What is the time limit for submitting certificate of completion Within 72 hours What kinds of joints are used on tank installations Swing joints Why are swing joints used on oil tank installations Shifting with in the tank 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 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 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 567 inch by 2 inch vent going to outside what is the maximum voltage allowed for an oil burner circuit 150 volts Is carbon monoxide a desirable element in flue gases No How much air is needed to burn a gallon of fuel oil and why 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 An orange flame with red Flame tips Explain how a burner should be piped when the supply tank is located below the burner 2. Pipe dual stage with a bypass plug How should a stack switch be installed according to 527 CMR 4.00 With a flexible conduit Why should a stack switch not be rigidly mounted So you can pull it out and check it What are the purposes of a hot and cold contacts in stack switches Hot: as they heat up hot contacts close .Cold: normally closed switches open when heat heats them up. What is delayed ignition Fuel introduced to the combustion chamber before ignition What are two causes of delayed ignition The igniter electrodes or weak Transformer 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