Hi,
I'm planing to add 2 bar single pump to my hot water system, I've tried to have a plumber to come around but two were not interested as the job is "too small", one never showed up and the other didn't seem to know what surrey flange is. So I've decided to do it myself.
I've been reading online trying to understand what exactly needs to be done, I want to boost the pressure to all my hot water outlets (kitchen tap, two in the bathroom) and replace my old electric shower with a thermostatic one.
I have gravity fed system and so far I know I need to add surrey flange and single impeller pump, my questions are:
1) My cold water storage tank is 4 gallon, is it sufficient or needs to be changed?
2) I've read somewhere (can't find it now) something about shower head needing to be at least 1m below bottom of my cold water tank. This is not possible in my case, I live in a flat and bottom of my tank is at 1,65m and shower head will be at 2.2m. Could someone clarify this to me? I think I'm getting confused as cold water will be fed from my cold mains and hot water from my new pump.
3) Is this pump ok?
http://www.stuart-turner.co.uk/products ... ar-single/
or cheaper one like this will be enough:
http://www.stuart-turner.co.uk/products ... ar-single/
4) My mains cold water pressure is at 3.2 bar, I understand that for thermostatic shower I need to have equal pressure, will Pressure Reducing Valve set at 2 bar (same as pump) do the job?
http://www.screwfix.com/p/honeywell-pre ... 22mm/32536
Any advice will be greatly appreciated :)
