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In the flue pipe between the draft regulator and the chimney
Which of the following can cause a weak spark in a high pressure gun burner?
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-A cracked electrode
-A bad ignition transformer
In which type of systems does the ignition transformer stay on for the full time the
burner is running?
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Intermittent
How many Btu's approximately in 1 gal of #2 fuel oil?
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140,000 btu's
The ______ are important for both on and off cycle efficiency in a fire tube boiler.
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Combustion chambers
Inadequate air supply can be cause by:
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Not enough air in the furnace room
Which of those listed below include heat losses from on cycle, off cycle, jacket
distribution and infiltration?
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AFUE
Corrosion to the flue pipe may occur if:
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The fuel gas temperature is below the dew point temperature
The _____ is used to prevent gravity circulation through the system when the boiler
maintains temperature.
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Flow control valve
Oil tank design, construction, installation and testing shall be in accordance with..
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527 CMR 9.0
Should hot water piping be insulated to save energy?
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Yes
What is the first thing a tech should do when arriving at a no combustion call?
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Ask how many times the customer reset the unit.
If the vacuum reading is substantially above the calculated reading, (with the burner
running) the cause may be:
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-Plugged fuel filter
-Kinked oil supply line
-Check valve sticking