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A collection of questions and answers related to the massachusetts oil burner technician certificate exam. It covers various aspects of oil burner operation, installation, and maintenance, including safety regulations, components, troubleshooting, and combustion principles. Useful for individuals preparing for the exam, but it lacks in-depth explanations and may require further research for a comprehensive understanding.
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What are the requirements when installing two tanks together to a common supply line? Tanks must be level What is the voltage found on the TT Terminals? 2 4v What gauge wire is used for a T Stat? 18 Guage Is Carbon Monoxide a desirable flue gas? Hell no! What is the purpose of a low limit control on a steam or hot water boiler?
Maintain boiler temperature for domestic What is a by pass plug used for? 2 pipe system How long after the completion of an installation must a certificate of completion be submitted? Within 72 hours When must a low water cut off be used? All steam boilers and hot water boilers over 400,000 btu's What size is the oil line for a residential burner? 3/ Largest oil capacity for residential without a license? 10,000 Gallons
Pressure Relief for a Steam Boiler is? 15 Psi How many cubic feet of Air is required for a 1 gallon nozzle? 1, If a power vent fails to start or shuts down during operation, will this affect the burner? Yes? Or No? Yes A Hot Water Boiler needs a low water cut off if over 300,000 B.T.U's? False What is the proper draft setting for an oil burner? .02 Inches WC
Taco Zones Valves draw .9 Amps? True? Or False? True An oil burner tank must be how many feet minimum from an oil burner? 5 Feet Minimum What is the gauge thickness for a 220 Gallon tank? 12 Gauge What is a good cad cell reading in the light? 300 - 1, What is a good cad cell reading in the dark? 100, 000 What device sees flame failure and causes it to lockout?
Give 2 reasons why draft is necessary? Remove flu gasses & efficiency. Would an increase in excess air raise or lower the stack temp? Raise Where should a hot water temp operating control not be located? Away from the tankless coil What are the requirements for pressure controls for boilers? 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? Mass Approval # What is a scavenger period?
Pre + Post Purge What are two methods used by domestic oil burners to prepare oil for combustion. Atomize & Vaporize What is composition of #2 fuel oil? 85% carbon & 15% Hydrogen What must be installed on gravity oil burners for safety? Constant Level Valve After a Thermostat has been installed what should be checked? Level, Heat Anticipator, Calibration What is a Cad Cell? A light sensitive Resistor
What are the 2 voltage circuits of a primary control? Line & Low. What is the function of a fuse? Protect circuit. What is the High Limit cut out? Max safe Temp or Pressure setting. What is the High Limit cut in? Cut out minus Differential. What is the "Max" Lockout time for a burner with a 3 GPH Flow Rate? 45 Seconds. What is the minimum stack temperature which will allow a stack switch to work?
400 degrees F When do you apply a permit to store oil? 10 gallons. What is the "Main" function of an oil burner Primary Control? Prove Flame. Stack Relay must be reset after lockout? True? or False? True. What is the Required minimum height required for fill and vent pipes? 3 Feet. What is the smallest vent pipe used for residential. 1 inch 1/
What do we mean by differential with regards to a pressure trol? Cut out & Cut in How many BTU's in a Gallon of #2 fuel oil? 140,000 Btu's How is an electrical solenoid valve wired and where is it installed? Wired in parallel & installed to the motor What is a series circuit? One path for electrons to flow What is a camium sulfide cell? A visual Flame detector How would you test the safety timing on a stack switch?
Disconnect T 3 Can material other then steel be used for construction of a light fuel oil tank? Yes if Approved What is the flash point of #2 fuel oil? 115 What is the minimum size oil line on a domestic system? 3/8 copper or black maul able Give two reasons for a high stack temperature? To much air or sooted boiler What is the greatest loss in a boiler? Heat loss
What are the five parts of a Backarach smoke test kit? Draft Gauge, Smoke pump, Co2 analizer, thermometer, & effiency chart. What are two reasons for a lockout on a stack switch with combustion established? Dirty Helix or low stack temperature What is the function of the hot contacts on a stack primary? Power the motor What do six terminals on a stack switch go to?
When are swing joints required? When ever you need pitch What is a power burner? Any burner other than a gravity feed or a pressure feed Why are low voltage t stats used more then line voltage Main reason because low voltage ones are much safer. Also low voltage t stats are more accurate and less expensive Is it permissible to use manually operated smoke pipe dampers Yes, on sleeve burners only. How is a stack switch put "in step"? Pull out clutch arm a half inch or so and release slowly. This aligns operating contacts. Cold contacts will close and hot contacts will open.
When replacing a nozzle to get the right angle & spray pattern you should? Replace it with manufacture specs All hot water boilers must use what to control expansion. Expansion tank Before installing a new nozzle you should what? Flush out connector line. When hydrogen burns it creates what? Water Vapor When using a draft gauge you must what? Zero it After installing a new steam boiler there is oil mixed with water what do you do?
You skim the water in the boiler Electrical energy is supplied to this device so it perform curtain functions Load See 7 more 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
