Let me try to explain to you hard of thinking sludge bucket fans, the sludge is not just rust tw.ts, do you know what water contains?? Add an extra 200Ltrs + to a system what happens?? Think about it, thick cnts.
It's so refreshing to see someone revert to type. Using foul language and personal insults is usually a sign that someone realises they have no other weapons left - having lost the logical argument.
Now, since you are soooo clever as you claim, just how much dissolved scale is there in 200l of water ?
I believe over 180mg/L is considered very hard water, lets go really hard and say 250mg/l. That's a whopping 1/4 of a gram in 1000g of water, or a whole 50g in 200l of water. Yes folks, a whole 50g. Apparently all of it (and several times more) settles out in the bottom of the store - because quite frankly, if you sprinkle that much fairly evenly over the area of a typical cylinder then it's not going to leave much of a deposit.
Plumbers don't like them because we come across them all the time, we have the experience, you don't. There's no experienced Plumber or Heating Engineer on here, or on any other forum, that would fit them out of choice.
Oh in theory they're great, but like most things in our industry, they're designed by morons & fail in service.
Let me see now ...
Combi boilers - unreliable and poor performers, PHEs scale up, getting better but used to be even worse.
Condensing boilers - ditto
Radiators - rust away and have to be replaced
DHW cylinders - eventually fail and have to be replaced
Pressurised systems - safety valves fail, expansion vessels fail
See a common thread. By your argument, no sensible plumber would fit any of these because in your own words "they're designed by morons & fail in service"
Another simple thing on ye Albion pish, the f*****g plastic ball valves melt due to too much heat in the cylinder so it starts to pour out the warning pipe resulting in new roughcast at the cost of thousands of pounds. The two sites I spoke of earlier has cost Albion, a developer and a manufacturer nearly a million quid to try to sort and it's still not right. I've seen in and been involved at the sharp end of the s***te that is a thermal store!
So argument goes along the lines of ... one manufacturer got one design element wrong, hence all designs, from all manufacturers, for all time, but be equally wrong. So you don't fit condensing boilers or combi boilers then since they are subject to exactly the same criticism.
So... Where/what is this "somewhere"? Sludge is a bad thing regardless of where it settles, and surely a known, single settlement area that is relatively easily clean is better than a dozen rads that need flushing or removing and flushing.
Yeah, you'd think so.
But some people aren't prepared co allow logical thinking like that if it gets in the way of good old fashioned prejudice.
Notice how the goal posts have been moved though ? A few posts back there was a subtle attempt to shift the argument - no longer about sludge in the bottom of the store, it's now apparently about the stuff that builds up in pumps