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Hi. This summer, I installed a BM K42 Twin Flow lll toe kick heather in my kitchen. I bled the system directly at the boiler outlet valves where it splits into 2 loops. This is a Weil McLain Eco hot water boiler that I had installed last winter and has only one zone but 2 loops. I don't know if it's worth mentioning but this boiler also supplies my domestic hot water.
When the boiler is on for heat, I can hear a gurgling sound in the pipes. I am pretty sure this is air. Yesterday, I was standing next to the heater when it started. It was like when you try to start a car and it won't start. The heater was making a loud banging noise and the wall where it is mounted was shaking. This lasted a good 10-15 seconds and then it started. It was scary. Since then, it has done it a few times. I have a Taco 4900 air separator that was suppose to take care of the air in the system. The system is heating fine otherwise. The toe kick is also working good.
I don't have any air bleeders on my baseboards except the one I installed on the toe kick. Am I doing it right to bleed the system at the boiler outlet where it splits into the 2 loops? I don't see where else I could bleed it!
Do you think it could be something else because I thought I had bled it good this summer. Someone told me that it has to be bled more than once. Is this true? Sorry for the long post.