heat pipe banging

haliburton

Please help me with this banging pipe ! I have a NY long island Split level home with a gas fired hot water slant fin furnace with 2 zones. I recently relocated a couple of heating pipes in the basement where the furnace is located to finish off the ceiling. Now, I have some banging copper pipes in the upper level bedroom.
I believe I bled the pipes pretty well but can't seem to get that banging to stop, any suggestions ? Did I mess up the system by putting a couple of extra turns in the copper pipe down in the basement ?

haliburton

heat pipe banging

I mean't to add - the banging happens only when the heat first comes on. Once its really hot and running it isn't banging anymore.

oil-2-4-6-gas

pictures of the piping ----Pictures

haliburton

heat pipe banging

We'll if it helps, the place where the banging is coming from is the last bedroom on the 2nd floor just as the pipe turns from the horizontal baseboard goes vertical and flows straight down through the foor and down into the basement. from where it comes out between rafters it turns a couple of times and then runs accross the basement ceiling then turns a couple more times into the burner.
Not sure where is critical picture ?

Norm Harvey

in moving the pipes, you've probably shifted some so that they are rubbing on the wood. When the hot water first goes through the pipes, the expansion can cause that bang.


Try to isolate the pipe that is banging and put some neoprene between the pipe and the wood that it is rubbing against.

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