To get the air out of the lines, I start at the tap closest to the water pump. Open and close the hot and cold separately... Usually hear the tone from the water pump change a bit. Work my way out, eventually to the furthest tap. For me, the issue is usually my kitchen sink. I find I open and close the tap a few times to get things flowing again. Get a little water and then spitting and sputtering and then stops again. I am not sure this is the best approach, just something I have discovered about my TT over the 4 years of ownership.