OIL BURNER LICENSE
(MASSACHUSETTS) EXAM NEWEST
ACTUAL EXAM WITH COMPLETE
QUESTIONS AND DETAILED ANSWERS
GRADED A | BRAND NEW!!!
The fan limit control on a warm air unit is used to: - ✔✔✔
Correct Answer > -Shut off the burner at a predetermined
temperature
-Start the blower at a predetermined temperature
-Stop the blower at a predetermined temperature
In all residential oil heating systems, the high limit control must
be: - ✔✔✔ Correct Answer > Line voltage and wired in series
with the primary control
Low voltage thermostats are more widely used van line voltage
thermostats because: - ✔✔✔ Correct Answer > They are more
sensitive to ambient temperature
,When a thermostat appears to be out of calibration, before
recalibration it is important to first: - ✔✔✔ Correct Answer > -
Be sure the thermostat is level
-Check to see that the hole behind the thermostat is sealed off
properly
-Be sure that the thermostat is acclimated to the room
temperature
The primary control must be capable of: - ✔✔✔ Correct
Answer > -Reacting to the absence of flame
-Controlling the ignition and motor
-Locking out on safety in the event of flame failure
When an interrupted ignition stack mounted primary is
energized call - ✔✔✔ Correct Answer > The motor and ignition
relays pull in together
When using a remote mounted heat sensing primary control,
the flame detector is often referred to as: - ✔✔✔ Correct
Answer > Pyrostat
,Because of the cad cell eye's limited sensing range, it can only
be used effectively to: - ✔✔✔ Correct Answer > Monitor an oil
flame
It has been established that _________ of steam is sufficient to
operate any residential one-pipe steam system. - ✔✔✔ Correct
Answer > 2 psi
When installing a replacement steam boiler, it is important to: -
✔✔✔ Correct Answer > Follow the manufacturers piping
instruction
In the early 1900's the ________ was invented to prevent water
from leaving the steam boiler should a return line spring a leak.
- ✔✔✔ Correct Answer > Hartford Loop
One of the reasons a radiator on a two pipe system fails to heat
may be: - ✔✔✔ Correct Answer > A faulty thermostat trap
A steam pigtail should always be installed between the
pressuretrol and the boiler to: - ✔✔✔ Correct Answer > Place
a water seal between the boiler and the pressuretrol
, In a one-pipe system, the minimum distance between the
water level and the bottom of the lowest steam carrying pipe
is: - ✔✔✔ Correct Answer > 28 inches
To prevent scalding temperatures at the domestic water
fixtures when using a tankless coil, it is important to install a: -
✔✔✔ Correct Answer > Tempering valve
A typical residential zone valve for a hot water heating system
normally operates on: - ✔✔✔ Correct Answer > 24 volts
In most residential hot water heating systems, the design
temperature difference between the supply and return water
is: - ✔✔✔ Correct Answer > 20° F
To properly size a zone circulator, you must know the following:
- ✔✔✔ Correct Answer > The gpm and feet of head of the
piping
The _____ is used to prevent gravity circulation through the
system when the boiler maintains temperature. - ✔✔✔ Correct
Answer > Flow control valve
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