Common problems with, boiler oil tanks
also known as, furnace oil tanks. Oil tanks are where you store
the oil used to run your furnace, boiler or water heater.
Some oil tanks are buried in the ground, some furnace oil
are standing outside of the house, and some boiler oil storage tanks are
in your basement or crawl space.
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Buried metal fuel oil storage tanks, can be
a problem, after being under ground for many years, the oil tank
can rust through causing a number of problems.
One problem is
ground water getting into the oil storage tank, this type of
problem will cause your boiler, furnace or water heater to fail,
and make a big mess in the oil lines going to your furnace, and
your oil filter, your furnace nozzle, your oil pump filter
screen and other. as a temporary fix, the water can be pumped
out, giving you some time to make other plans.
Another problem with the buried boiler oil storage tank is,
oil can be leaking out of the tank, into the ground, not only is
this a waste of oil and money, but it is a big environmental no
If fuel oil gets into the ground, all of the affected
dirt and soil needs to be removed and disposed of according to
EPA rules, this can be very expensive.
It is recommended, that you replace the buried old fuel oil
storage tank before it leak, other non metal furnace fuel oil
storage tanks are available, and new requirements are needed for
all buried fuel oil storage tanks.
|I came across an unusable problem with
a Dunkirk oil fired hot water furnace, one day.
oil fired boiler, was brand new, so was the house and so was the
buried fuel oil storage tank.
The problem was, the boiler
would run for a day or so, then it would shut down, I would
bleed the oil line coming from the fuel oil storage tank, and it
would run again for a day or so, and shut down again, everything
was new so, I did not think there was anything wrong with oil,
or filters, this went on a few more times, but never once did I
think, to look at the oil tank, I assumed that it was installed
correctly, and being buried, what could possible be wrong with
the oil tank.
Then I noticed, when I opened the purge valve
on the beckett oil burner, it was sucking back hard, when the
oil storage tank is lower then the Dunkirk boiler, it is normal
for the oil to go back to the oil tank when the bleeder valve is
opened, but this was like a vacuum cleaner sucking, not normal
gravity sucking back.
So now I need to understand what is
causing this problem, I go to the side of the house where the
new furnace fuel oil storage is buried, All I expected to see
was the 2 pipes coming out of the ground, 1 pipe is the fill
pipe, this is used to put fuel oil into the fuel oil storage
The other pipe is a vent pipe, the vent pipe has 3
functions, 1 it allows air, to leave the fuel tank when the tank
is being filled, 2 it has an alarm that tells the person filling
the tank, it is full, avoiding overflowing of the fuel, and 3 it
allows the fuel oil to flow through the oil lines to the
furnace, without creating a vacuum.
When I get to the new
buried fuel oil storage tank, I only see 1 pipe coming out of
the ground, the fill pipe, whoever installed the new oil tank,
did not install the vent pipe or alarm.
Not having a vent on
the fuel oil storage tank, caused a vacuum in the oil tank, this
would allow the boiler to run until the sucking from the Dunkirk
oil pump, created a vacuum, pressure in the oil tank that was
equel to the the oil pump pressure, then it could not pull any
more oil, and the boiler would shut down.