You lot will like this !
My requirement to the builder was that 4 uvc showers and an electric shower could run simultaneously ( lower flow of course ! ) and be usable .
Someone gave a nice diagram of a system to do that ( showing a cold accumulator tank ) . Anyway right at the start of the refurb I showed it to builders “uvc expert” ( the guy who installed it ) . He’d “never seen anything like that “ - so it was left .
Today I run the electric shower and 3 uvc simultaneously- guess what ? . Underflow light comes on electric shower and naturally water cold .
Builder takes a look - he’s never heard of a ‘cold accumulator ‘ . Anyway he has to do some ‘internet research ‘ and undoubtedly will retro fit a pressurised cold accumulator just for the shower .
I didn’t say “I told you “ .
The more I employ ‘trades’ ; the more knowledge I gain ! ???