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The primary control starts burner operation in response to a signal from​ the_____. - ANSWER-room thermostat When replacing an oil burner​ nozzle, always use​ a(n)_____. - ANSWER-nozzle wrench When doing a smoke spot test on a heavy​ boiler, an acceptable smoke spot number​ is_____. - ANSWER-two When reviewing the results of a combustion efficiency test for a furnace with a flame retention​ burner, the oxygen level should be​ _____. - ANSWER-3 to 5 percent In the presen...

Add an oil line heater. Cut with #1 fuel or kerosene. What is the maximum tank size allowed inside unenclosed? - ANSWER-660 gal What is the purpose of a delayed oil valve? - ANSWER-Allows time for the oil pump to get up to speed. Delays oil flow to the nozzle. On a call where a hydronic heat system is putting out too much heat, the issue could be? - ANSWER-A shorted out thermostat. When measuring a cad cell with the burner running and the ff terminals jumped out, what should ...

To wire an oil burner in MA you must be a licensed electrician: T or F - ANSWER-False Flash Point is the lowest temp. at which the vapours above the fuel will ignite: T or F - ANSWER-True Pour Point is the lowest temperature at which No. 2 fuel oil can be lit: T or F - ANSWER-False If the centrifugal switch on a split phase motor did not open the motor could burn out: T or F - ANSWER-True In MA 527CMR4.00 a 15 amp breaker, emergency switch, thermal switch, service switch, are require...

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...