2007-12-12 05:25:01 · 8 answers · asked by employsthebodger 1 in Home & Garden ➔ Maintenance & Repairs
yes.
some combi boilers need mains water pressure to operate the hydraulics on the divertor valve so you wouldnt get any hotwater.
2007-12-12 09:37:28 · answer #1 · answered by Turdy malurdy 6 · 0⤊ 0⤋
i dont understand why it needs a 'back ' pressure to operate, i know what it is but not why it needs it in this case?
also i think the cistern supply, if it meets normal requirements, and the fill valve would last a fair time unless there was a large sustained demand for hot and cold. at least for a normal domestic combi boiler hot output. so shut off would be possible but only after a long run time
2007-12-12 19:54:28 · answer #2 · answered by r m 4 · 0⤊ 0⤋
It should be fed from the mains, but can be run from water storage tanks (this is called a low head installation), it is not usually beneficial, one of the ideas of a combi is to be rid of storage tanks.
2007-12-12 14:20:45 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Yes, they are designed to be fed from the mains - with non-return fitting on the feed side of course. Assume you are thinking of a tank? This won't give continuous flow whilst it is refilling and your boiler will go into fail safe thinking the supply has given out.
2007-12-12 13:37:27 · answer #4 · answered by Bilbo 7 · 0⤊ 1⤋
it wont work ..its as simple as that ..a combi works on constant water pressure ..you are not going to get that from a tank ..
2007-12-12 13:52:28 · answer #5 · answered by boy boy 7 · 0⤊ 1⤋
It needs back pressure to work...it just wont work otherwise...it detects drop in pressure when taps are turned on...
2007-12-12 13:29:55 · answer #6 · answered by ? 3 · 0⤊ 0⤋
needs pressure or else will shut down
2007-12-12 13:29:32 · answer #7 · answered by paul m 3 · 0⤊ 0⤋
Yes it should,It will shut down.
2007-12-12 13:28:10 · answer #8 · answered by taxed till i die,and then some. 7 · 0⤊ 0⤋