Central Heating Pipe Noise - caused by water taps

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Hi

Earlier I had opened a thread about a noise in my central heating pipes and I got handful of suggestions - please see this thread: https://www.diynot.com/diy/threads/central-heating-pipe-noise.518419/page-2#post-4323703

Its looks like we have now narrowed down the problem, but we don't know how should we fix this problem.

The noise in central heating pipe is actually being caused by opening water taps in bathroom / kitchen (yet to identify which one caused the problem - hot or cold tap). It seems like the water tab is somehow sending air (while closing the tap, I think) to central heating pipe. Is this an issue with by pass valve. Its a brand new boiler with all the pipes are newly installed throughout the house.

Thanks
 
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I haven't read the other thread in detail, but if it's a combi boiler using hotwater will divert the boiler to heat the water, and then turning the tap off will divert it back to heating the house.

So it could be using the hot effects the heating noise in the same way as turning it off and back in.

Best to keep it all in one thread however.


Daniel
 
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I haven't read the other thread in detail, but if it's a combi boiler using hotwater will divert the boiler to heat the water, and then turning the tap off will divert it back to heating the house.

So it could be using the hot effects the heating noise in the same way as turning it off and back in.

Best to keep it all in one thread however.


Daniel

Hi Daniel

Yes, its a Vaillant Combi boiler. Opening the hot water tap (for example, in bath) is actually somehow sending air to central heating pipes which makes the air (running through the pipe) noise
 
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take and post a video of the sound, the water in the CH never meets the water that comes out of your HW taps unless a fault condition but as its a new boiler it is possible but unlikely and you would be getting dirty water from the taps or you would have pressure problems at the boiler
 
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Have you run the purge program on the boiler, if it's an ecotec etc?

I haven't read the other thread.
 
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