If your boiler is upstairs and higher than the tank, then it is either 2 pipe, or has a tiger loop. Either of these requires the pump to be run to prime the system, but shouldn't take too long.
How do you know there is air? Have you got transparent oil lines? You need to make sure there is no obstruction to oil before priming through the pump.
How do you know there is air? Have you got transparent oil lines? You need to make sure there is no obstruction to oil before priming through the pump.
