Under the "Vented mains pressure system" table it states : No loft tanks - space saving
you cannot put mains pressure into a vented system, it would just overflow!
Never assume everything you read is correct !
Tony
Under the "Vented mains pressure system" table it states : No loft tanks - space saving
If it doesn't use a storage tank, it will use a header tank. I doubt an expansion vessel would be safe enough for a vented cylinder.That sounds fairly clear to me. It doesn't state or even imply that it is a gravity fed system that utilises a storage tank in the loft.
DIA said:And I still don't like the sludge buckets, but they do a job. icon_rolleyes.gif
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I havent read the whole thread sooooo what happened, has the op decided to put a new mains in, or does he/she think a thermal store is going to magic up more than 16 litres a minute ?
if it was me i would bung in a break tank and pump the whole lot...
with a vented tank with high recovery coil in it you make it hot water priority with weather comp and dhw cylinder sensor.
did a job like that and got the bath hot tap from 8L/M (off the mains combi) to 22+L/M of the pumped vented tank
Thermal stores will do what you want, and give you mains pressure hot water. Plus you can add solar if have a south roof.
The best stores have a small header tank.
Do a google for Telford stores.
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