Bubbling nopise from Central Heating system upstairs on star


Postby JohnP2712 » Mon Dec 01, 2008 4:16 pm

Hi

I am sure one of you guys will know the answer to this. I have a relativly new Boiler installed in an old Microbore system. The boiler is oil fired. When the new boiler was installed I had an extension added but the plumber used 15mm traditional plumbing. All was well. Recently I have added several new radiators to the microbore part of the installation (very proud) along with the TRV's. Of course I have drained down and up (twice in fact). Both now and after the previous drain down I am gettting a bubbling noise from the hot water cylinder area towards the radiator in our bedroom every time the system fires up. It is getting worse. I have drained all the radiators and there is never any air. I tried draining the vent next to the hot water cylinder (the pump is in the same location btw) but nothing at all came out (water or air). So now I am stumped.

Any help anyone please

Thanks!

JP
JohnP2712
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