one for the plumbers out there

[cmarkod]

I've recently had a vertical rad(2m) fitted to my existing central heating system. It 'tinkles' when on and I've bled it for ages to try and get any air out with no joy. I've got two more of these rads that I've had in for a couple of years and I've got these to run silently now but I cna't achieve the seame with this new one. Any suggestions??

 

[dsolds]

I had this with one of my lounge rads. Ended up taking it off and flushing through with a hose. It turned out to be a blob of solder which I assume was a remnant from when the pipes were installed.

 

[ukcodger]

I had this with one of my lounge rads. Ended up taking it off and flushing through with a hose. It turned out to be a blob of solder which I assume was a remnant from when the pipes were installed.

That makes sense, I suppose a loose blob of weld from rad fabrication would do the same thing.