How do i bleed a eurocal oil boiler having run out of oil?

On the end of the pump of the burner you will see a small fitting that resembles a grease fitting on a car. Turn off the power to the boiler then turn it back on. Open this fitting with a wrench while it is running and let the air bleed out. When you have fuel oil and no more bubbles close the fitting and it should fire up. If you are not quick enough you might have to turn it off and on again because it will lock out if there is no fuel going to the burner.