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wax crystals form, gels up and the viscosity of the oil goes up - ANSWER-What happens to fuel oil when it is stored outside on a day when the temp. is only 12 degrees F? 85% carbon, 15% nitrogen, (ASTM D-396) - ANSWER-What is the chemical composition of fuel oil? If flames hit chamber it will cause soot and carbon, blocks up the heat exchanger passage - ANSWER-What does impingement mean and why is it a problem? 1 quarter inch - ANSWER-How far is the burner blast tube set back in a combu...

Minimum net stack temperature of above 350°F must be maintained - ANSWER-To avoid condensation and maintain draft The primary control must be capable of reacting to - ANSWER-The presence or absence of flame The two principal combustible elements in number two fuel oil are nitrogen and carbon - ANSWER-False If a stack type controller fails you must - ANSWER-Replace it with an approved type controller When wiring multiple circulators they should be wired in - ANSWER-Parallel Oil vi...

coupling - ANSWER-the connection between the fuel pump and oil burner motor housing - ANSWER-encases the burner and all of its components in the heating unit fuel line - ANSWER-a line meant for the passing of fuel from the fuel pump to the burner nozzle - ANSWER-oil is forced through the nozzle which cause atomization patterning and metering cad cell - ANSWER-a flame proving device that senses light in the combustion chamber adjustment plate - ANSWER-the adjustment of a band place...

Viscosity problems can be corrected by: - ANSWER-Decreasing the nozzle size and increasing the pump pressure accordingly The minimum operating pressure of an oil pump is: - ANSWER-100 PSI If a stack relay fails you, must? - ANSWER-Replace it with an approved type controller Aquastats are normally found on what type of heating systems? - ANSWER-Hydronic Airstats are found on what type of heating systems? - ANSWER-Forced warm air systems Under sized returns on a warm air system can ...

List three things needed for ignition? - ANSWER-Fuel, air and spark. Flame Retention Burners have what advantage over Non Flame Retention? - ANSWER-Better air to oil mixture and cleaner burning. Flame Retention Burners work on _ pressure? - ANSWER-High Static pressure. Why is it important to keep Burner motor fan clean? - ANSWER-Keep proper airflow. How do you adjust air on a Fixed Head and an Adjustable Head? - ANSWER-Change the airflow from the ring, adjust the dept of the nozzle. ...

The burner operates but there is no combustion because - ANSWER-There is too much air On a replacement steam boiler installation, you should pipe full-size risers to the header. True or false - ANSWER-False What is the best way to remove surface oil? - ANSWER-Skimming Where should the water like normally be in the sight glass when the boiler is off - ANSWER-Center of the sight glass What is the purpose of the automatic water feed on a steam boiler - ANSWER-To maintain a safe minimum ...

A fuel oil storage tank cannot be installed: - ANSWER-In the furnace room 5 feet within heating unit What temperature does a thermal wheel automatically activate at - ANSWER-165°F Who inspects an oil burner installation - ANSWER-State fire marshal Any valve used on a oil burner install must be: - ANSWER-Fusible valve What form is used to pull an oil burner permit - ANSWER-CMR.4 What size pipe is used to CrossConnect tank outlet piping - ANSWER-1/2 inch When is an oil safety va...

What size is the oil line for a residential burner? - ANSWER-3/8 Largest oil capacity for residential without a license? - ANSWER-10,000 Gallons At what height ceiling would a second thermal switch be required? - ANSWER-12' A typical residential oil burner is also s/u to run Kerosene True? Or False? - ANSWER-False Permit to install an oil burner is issued by the? - ANSWER-State Fire Marshall Draft measurements are taken in what? - ANSWER-Inches of water column Pressure Relief ...

vent pipes must be atleast ______ feet above or _______ feet below any window or door. they must also be _____ get away from property line to prevent sewer gas from drifting to neighbors house - ANSWER-3 feet above or 5 feet below door or window. 3 feet from property line To make combustion efficiency test, a whole must be made - ANSWER-In the flue pipe before the draft control What three colors does the NEC allowed to be used for ground wire? - ANSWER-Green, bare of green with yellow str...

A ______ carbon dioxide content is usually caused by insufficient draft or an overfired burner low high - ANSWER-high A _______ stack thermometer is generally used to measure the flue gas temperature in oil heating system: 200/2000°F 100/1000°F 200/1000°F 100/2000°F - ANSWER-200/1000°F Delayed ignition is mainly traced to a problem with which of the following: Stoker Electrodes Burner Nozzle Oil pump - ANSWER-Electrodes The advantage of the _______ of oil ...