It was also quite common to pipe a 20 - 30 kw boiler up with 15 mm from the split, doesn't make it good.It was quite common to switch the boiler from the programmer, in the olden days.![]()
Never ever seen an old boiler under piped, but no doubt there was a few cowboys back then.
Was on a posh estate in the 60s and the heating had been connected with hose pipe and jubilee clips.
We nick named him hose pipe Hammond after that, (the later being his name) and he had done dozens like it.
