The expansion vessel in my Brittony Combi 80 boiler is shot. I plan on installing a separate stand-alone expansion vessel. The question is: what size should I get? It's a 3-bedroom semi-detached house with radiators in all rooms.
One other question: DOes it matter where, in the system, I install it? Should it be installed in parallel with the main C/H output from the boiler, or on parallel to the C/H return pipe?
Thank you,
Al D