MASSACHUSETTS OIL BURNER LICENSE EXAM QUESTIONS WITH CORRECT ANSWERS | LATEST UPDATE 2024/2025 | GRADED A+

What are the 3 funtions of an Oil Burner nozzle? - correct answer Atomize, Meter, Patter. What are the 2 voltage circuits of a primary control? - correct answer Line & Low. What is the function of a fuse? - correct answer Protect circuit. What is the High Limit cut out? - correct answer Max safe Temp or Pressure setting. What is the High Limit cut in? - correct answer Cut out minus Differential. What is the "Max" Lockout time for a burner with a 3 GPH Flow Rate? - correct answer 45 Seconds. What is the minimum stack temperature which will allow a stack switch to work? - correct answer 400 degrees F When do you apply a permit to store oil? - correct answer 10 gallons. What is the "Main" function of an oil burner Primary Control? - correct answer Prove Flame. Stack Relay must be reset after lockout? True? or False? - correct answer True. What is the Required minimum height required for fill and vent pipes? - correct answer 3 Feet. MASSACHUSETTS OIL BURNER LICENSE EXAM QUESTIONS WITH CORRECT ANSWERS | LATEST UPDATE 2024/2025 | GRADED A+ What is the smallest vent pipe used for residential. - correct answer 1 inch 1/4 What size is the oil line for a residential burner? - correct answer 3/8 Largest oil capacity for residential without a license? - correct answer 10,000 Gallons At what height ceiling would a second thermal switch be required? - correct answer 12' A typical residential oil burner is also s/u to run Kerosene True? Or False? - correct answer False Permit to install an oil burner is issued by the? - correct answer State Fire Marshall Draft measurements are taken in what? - correct answer Inches of water column Pressure Relief for a Hot Water Boiler is? - correct answer 30 Psi Pressure Relief for a Steam Boiler is? - correct answer 15 Psi How many cubic feet of Air is required for a 1 gallon nozzle? - correct answer 1,400 If a power vent fails to start or shuts down during operation, will this affect the burner? Yes? Or No? - correct answer Yes A Hot Water Boiler needs a low water cut off if over 300,000 B.T.U's? - correct answer False What is the proper draft setting for an oil burner? - correct answer .02 Inches WC Taco Zones Valves draw .9 Amps? True? Or False? - correct answer True An oil burner tank must be how many feet minimum from an oil burner? - correct answer 5 Feet Minimum What is the gauge thickness for a 220 Gallon tank? - correct answer 12 Gauge What is a good cad cell reading in the light? - correct answer 300 -1,000 What is a good cad cell reading in the dark? - correct answer 100,000 What device sees flame failure and causes it to lockout? - correct answer Cad Cell A boiler has been flooded by recent rain. What would be the most common problem for a burner as a result - correct answer Electrical damage What is the minimum size of pipping for copper and black pipe in a residential installation? - correct answer 3/8 unless over 100 ft If you increased the air on a burner what would happen to the Co2 Reading? - correct answer It would go down If you increased the air on a burner what would happen to stack temperature? - correct answer It would go up Give 2 reasons why draft is necessary? - correct answer Remove flu gasses & efficiency. Would an increase in excess air raise or lower the stack temp? - correct answer Raise Where should a hot water temp operating control not be located? - correct answer Away from the tankless coil What are the requirements for pressure controls for boilers? - correct answer Line Voltage, ( Max 15 psi ) , Mounted on pigtail, and above water line. What info on an oil burner certifies it has been approved by the Marshall? - correct answer Mass Approval # What is a scavenger period? - correct answer Pre + Post Purge What are two methods used by domestic oil burners to prepare oil for combustion. - correct answer Atomize & Vaporize What is composition of #2 fuel oil? - correct answer 85% carbon & 15% Hydrogen What must be installed on gravity oil burners for safety? - correct answer Constant Level Valve After a Thermostat has been installed what should be checked? - correct answer Level, Heat Anticipator, Calibration What is a Cad Cell ? - correct answer A light sensitive Resistor What is the melting point of solder used on oil lines? - correct answer 500 Degrees F Why should you not allow an oil pump to create more then 12" of Vacuum? - correct answer Cavitation What parts are replaced on an annual tune-up? - correct answer Filter, nozzle, strainer, and pump Gasket When is alarm used on an oil tank? - correct answer When you can not tell what level while filling What info must be given when buying a new pump? - correct answer Rpm's, rotation, inlet port, outlet port, and stage of pump?