Many thanks everyone
Yes it must be the main heat exchanger.
May well just get engineer to get it. He did seem to think he might be able to rob one from a defunct boiler but i'm not sure i'm all that keen on this avenue
Yes it must be the main heat exchanger.
May well just get engineer to get it. He did seem to think he might be able to rob one from a defunct boiler but i'm not sure i'm all that keen on this avenue