"John" wrote in message
...


.

My boiler is a trianco and the burner is Riello/RBL.


I am surprised at your situation.

I have always found the technical people at Trianco quite helpful.

You could also ask Reillo see:

http://www.rielloburners.co.uk/


(I have a Trianco boiler with a Danfoss pump which uses a two pipe system.)

Replacing the whole boiler for a more modern one might be worth considering,
bearing in mind that condensing boilers may soon be compulsory (except in some
circumstances.)

--

Michael Chare