I came across something in my travels yesterday which surprised me a
bit, and I wondered if others might be able to satisfy my curiosity?
I opened the airing cupboard door, inside was a larger than average HW
tank which came up to about my chest (maybe 5ft tall). On the HW tank
was a big notice with words to the effect that the HW was supplied at
As it happened I had to shut off the HW supply to work on something in
the bathroom, and sure enough this required the rising main to be shut
off in the kitchen in order to kill the HW supply.
My experience is obviously limited in this domain, but I've always
been used to HW cylinders being fed by gravity from the cold header
tank in the loft so it was a bit of a surprise to find one that's
being fed directly from the rising main. Usually the rising main goes
straight up to the loft to fill the header tank and pretty much
everything else (apart from a tap in the kitchen perhaps) is dropped
from that tank.
The usual CH/HW piping with divertor valve was in place to the HW
cylinder to indirectly heat the HW thru a coil, so I'm pretty sure
this HW cylinder isn't being fed directly from a CH boiler.
Is this a usual arrangement which I've managed to miss all these
years, or did I trip over a house that has had something special done
to it? :)
Just very curious about the piping arrangement in this instance
because it seemed odd - I'm not trying to fix a problem with the HW
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