according to the installation instructions there has to be 1 mtr between them ,but i dont have any thing like that ..does anyone know if this spacing is critical
2007-12-16 00:33:21 · 9 answers · asked by malcwood48 1 in Home & Garden ➔ Do It Yourself (DIY)
It'll be about header-pressure. I imagine it's in case your mains water pressure is a bit lacking.
2007-12-16 00:38:39 · answer #1 · answered by parspants 5 · 0⤊ 1⤋
yes it is
as some have said its to do with the pressure to the pump. if there is insufficient height of water between the two then the pump will be ruined in a short time, cavitation, noisy and will have insufficient flow to give a decent shower and possiblly not operate at all, flow switches!
when the pump fails the manufacturer will not replace it as its incorrectly fitted.
your system needs to be described as there is more to installing a pump than just connecting the pipes, well if you want it to operate correctly anyway.
do you have a Fortic cylinder or similar? if not as there is very often sufficient head between the two.
a negative head pump is for when there is an outlet (shower/tap etc) just below or above the cold water cistern
NOT for insufficient height between the cistern and cylinder
if you are in the UK you CANNOT add a pump to the cold water mains before the tank/cistern without permission from the local water board.
you're system MAY not be suitable for a pump in its current configuration, probably need to get someone to look, but if you are doing it yourself that would be taking a liberty. You could offer to pay for advice though
someone intelligently suggested an electric shower thats a possible with a mains supply nearby
ps this question does NOT relate to the use of a Surrey or other flange although that is significant in the overall scheme
it also shows that no matter how long a plumber served they still need to read the question i.e. its pressure thats significant . it is not concerned with water starvation which is what steveg is talking about and would relate to the volume of water in the tank not its height above the cylinder. steveg is also looking at the hot supply only and in effect you need to take hot and cold from the cistern so as they are both at the same pressure
2007-12-16 16:02:19 · answer #2 · answered by r m 4 · 1⤊ 0⤋
the spacing is a way of ensuring a pressure will always be there and it is basically to stop the water fluctuating between hot and cold when you take a shower a bit more complicated that what I STATE but that is the general idea
2007-12-16 08:44:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It is to give your hot water sufficient pressure. The higher your header tank is, the more pressure you will have. Remember that a water tank is low water pressureand to increase the pressure the tank must go higher.
2007-12-19 18:25:00 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It's so you get a decent shower, the height gives the pressure to the water.
2007-12-16 11:17:43 · answer #5 · answered by i_am_jean_s 4 · 1⤊ 1⤋
I had this a few years ago. if you are not carefull your shower pump will suck air into your pipes. look up the words "surrey Flange" on the Internet. this goes in the top of your water cylinder and provides a separate feed for your shower.
2007-12-16 11:43:02 · answer #6 · answered by Anonymous · 2⤊ 1⤋
of course its critical ..its gravity fed ..and you wont have any water pressure ....BUT...all is not lost ..you can go to a plumbers merchants and ask for a negative head pump ..that will sort it for you
2007-12-16 14:54:07 · answer #7 · answered by boy boy 7 · 1⤊ 1⤋
Why have a tank at all, have you thought about connecting it to the mains?
2007-12-16 08:39:12 · answer #8 · answered by Bilbo 7 · 0⤊ 2⤋
"stevegre " has it in one. I can't improve on it, as it is the correct answer.
2007-12-17 11:57:45 · answer #9 · answered by xenon 6 · 0⤊ 1⤋