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Backflow vent started leaking
Just turned on my boiler a couple of times this season, and it's been acting a little bit odd. I am trying to get it looked at by a pro on here, but just wanted to check with this board. The boiler itself is pretty new... replaced in 2015.
First, the backflow vent has started dripping. Second, the radiators used to traditionally whistle as the steam came on. That whistling is gone. I also have a sense that the system is filling with steam slower than previous years. Anyone had these symptoms or have an idea of the cause?
I had mentioned in a previous post that I think my manual fill valve has a leak because the boiler water level was gradually growing. I was planning on having it replaced when I had the boiler cleaned this season. I'm wondering if as my boiler builds up steam, it is pushing the incoming water drip into the backflow? I'm not a steam expert, but it's just the only thing I can think of... Or is that not related?