Oil furnaces mingle fuel and air in an optimal size to operate properly. An oil furnace may, but, limitation up with as well yet air in the lines. In such instances, it is expedient to "bleed" the lines---that is, let outside the air that has built up in the fuel lines. Bleeding an oil furnace can be done by a know onions, or you can determine it yourself with the due tools and directions. Provided your furnace is not working properly, stab bleeding the lines as a belongings of your maintenence regimen.
When the valve is turned and the reset button is pressed, suction will be created in the valve, allowing air and excess fuel to be pumped out.
Finishing the Bleed
A steady stream of fuel should flow through the bleeder valve before it is ready to be closed again.Oftentimes, you will notice two nuts on the furnace's fuel filter. The smaller one should be turned slightly (about a quarter-turn) to let the air out of the furnace. The nut should be retightened once all of the air has been released and oil bubbles begin to form.
Bleeder Valve
Next, locate the bleeder valve on your furnace. The side of the fuel pump is the most common location for such a valve, but consult your user's manual for the exact positioning in your furnace. Turn the valve sufficiently to let air out. Some furnaces require that a piece of tubing be attached so fuel can flow out.
Preparing Your Furnace
Before the lines on a furnace are bled, the furnace should be turned off. This is accessible on most furnaces; nevertheless, you may want to refer to your user's book whether you're unaware of the Correct action to close off your furnace. In general, the shutoff switch will be a toggle (marked ON or OFF) or a button.If oil and air (in other words, bubbles) are present, the valve will need to be bled further. Once the steady stream is flowing regularly through the valve for a couple of seconds, the nut may be tightened. The furnace may turn on by itself or it may need to be restarted manually.
