Whistling/ringing from hot water cylinder

lostinrates

We recently had a new heating system installed and are having a fair few teething problmes. It's a sealed system powered by a pellet boiler.

On a couple of occasions the cylinder has made a very shrill whistle or ringing which was at first ascribed by the heating installers as down to the fact there was not sufficient water in it when it was first turned on, but it is now full, and it rang yesterday afternoon and all morning so far today.

It's tortuous, and I cannot get hold of the installers to come and hear it (they have not heard it only had my description).

Any ideas what this could be? I and my digs are huddling at the opposite end of the house so as to lessen the impact of the sound.:(

alleycat`

Do you have any photos of the system / layout and also can you record it on a little video and upload it somewhere like http://tinypic.com/

A whistling hot water tank sounds like it is either drawing in air or is overheating and a pressure relief valve is kicking in.

lostinrates

alleycat` wrote: »

Do you have any photos of the system / layout and also can you record it on a little video and upload it somewhere like http://tinypic.com/

A whistling hot water tank sounds like it is either drawing in air or is overheating and a pressure relief valve is kicking in.

I can take and upload a photo later. Thanks.


Having spoken to the engineer he said he things its just air in the pipes, and asked that the radiators were bled again, but they had almost no air in them. It might be that those small amounts are building up and we will need to bleed lots over the next few weeks?

I know they have had problems with a pressure valve leaking initially.

dullnote

Hi check the tundish, this is where the water in the cylinder will go if the the system is over pressure. If you look at the cylinder near the top there will be a pipe going to waste or outside, a lot of times there is an air gap and you can see if it is running.

this would normally only open to reduce the pressure and close would not think it would run for hours but worth a check.

Other thing are all the filling valves fully open if one is just about closed this could cause a noise every time the cylinder tries to fill.

Automatic air valve running for hours?? dont think so, only way that could happen is air getting in.

Is you cylinder for hot water and heating on a closed loop? if so does the pressure drop in the heating system?

lostinrates

An update, it was a valve. It was set to maximum when installed and needed to be on minimum. All is now resolved! Hurrah!