OIL BURNER LICENSE EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 250 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+.pdf

OIL BURNER LICENSE (MASSACHUSET m m m




TS) EXAM NEWEST ACTUAL EXAM WIT
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H COMPLETE QUESTIONS AND DETAIL
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ED ANSWERS GRADED A | BRAND NE
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W!!!

The fan limit control on a warm air unit is used to: -
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m✔✔✔ Correct Answer > - m m m m



Shut off the burner at a predetermined temperature
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-Start the blower at a predetermined temperature
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-Stop the blower at a predetermined temperature
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In all residential oil heating systems, the high limit control must
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be: - m



m✔✔✔ Correct Answer > Line voltage and wired in series with t
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he primary control
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Low voltage thermostats are more widely used van line voltage
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mthermostats because: - m m



m✔✔✔ Correct Answer > They are more sensitive to ambient te
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mperature

,When a thermostat appears to be out of calibration, before rec
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alibration it is important to first: - ✔✔✔ Correct Answer > -
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mBe sure the thermostat is level
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-
Check to see that the hole behind the thermostat is sealed off p
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roperly
-
Be sure that the thermostat is acclimated to the room temperat
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ure


The primary control must be capable of: -
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✔✔✔ Correct Answer > -Reacting to the absence of flame
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-Controlling the ignition and motor m m m m




-Locking out on safety in the event of flame failure
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When an interrupted ignition stack mounted primary is energiz
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ed call -
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✔✔✔ Correct Answer > The motor and ignition relays pull in t
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ogether


When using a remote mounted heat sensing primary control, th
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e flame detector is often referred to as: -
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m✔✔✔ Correct Answer > Pyrostat
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,Because of the cad cell eye's limited sensing range, it can only b
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e used effectively to: -
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m✔✔✔ Correct Answer > Monitor an oil flame
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It has been established that
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of steam is sufficient to m m m m



operate any residential one-pipe steam system. -
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✔✔✔ Correct Answer > 2 psi
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When installing a replacement steam boiler, it is important to: -
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✔✔✔ Correct Answer > Follow the manufacturers piping instru
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ction


In the early 1900's the
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was invented to prevent water m m m m



mfrom leaving the steam boiler should a return line spring a leak.
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- ✔✔✔ Correct Answer > Hartford Loop
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One of the reasons a radiator on a two pipe system fails to heat
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may be: - ✔✔✔ Correct Answer > A faulty thermostat trap
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A steam pigtail should always be installed between the pressur
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etrol and the boiler to: -
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✔✔✔ Correct Answer > Place a water seal between the boiler
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mand the pressuretrol
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, In a one-
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pipe system, the minimum distance between the water level a
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nd the bottom of the lowest steam carrying pipe is: -
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m✔✔✔ Correct Answer > 28 inches
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To prevent scalding temperatures at the domestic water fixtur
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es when using a tankless coil, it is important to install a: -
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✔✔✔ Correct Answer > Tempering valve
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A typical residential zone valve for a hot water heating system n
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ormally operates on: - ✔✔✔ Correct Answer > 24 volts
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In most residential hot water heating systems, the design temp
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erature difference between the supply and return water is: -
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m✔✔✔ Correct Answer > 20° F
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To properly size a zone circulator, you must know the following:
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-
m✔✔✔ Correct Answer > The gpm and feet of head of the piping
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The m



is used to prevent gravity circulation through the sys
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tem when the boiler maintains temperature. -
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m✔✔✔ Correct Answer > Flow control valve
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