Load vibrating from Boiler on cold tap (intermittent)

[swal87]

Evening guys.

I have an issue with my glowworm cxi30 whereby occationally when i run the cold tap for a few seconds (maybe 5 seconds) the boiler makes a loud vibrating noise for about 4-5 seconds after closing the tap.

This is happening from different taps in the house.

Again this is intermittant and wont happen for days.

Any direction would be apprechiated.

Cheers

 

[Mike Jackson]

Sounds like water hammer to me. Fitting a small shock arrestor may help.

 

[jtsplumbing]

May also be an idea to fit a pressure reduceing valve on incomeing water main (If you have high pressure)

 

[mountainman]

The early Saunier Duvall combi's had this problem and that was solved with a shock arrester.