02GF74
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| posted on 22/10/14 at 09:52 AM |
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plumbing an electric shower
Any reason why an electric shower cannot be plumbed in by fitting a t piece in the mains feed to the cold water tank? Tank is above in the attic.
In the bathroom there is cold and hot feeds to the existing unit that i understand is a mixer so the feeds come from the tanks, electric shower need
mains feed or a pump to up the pressure - correct?
Is there a problem with my suggestion such as starving the shower when the cold water tank is being filled?
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MK9R
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| posted on 22/10/14 at 10:00 AM |
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It's only the same as if you don't have a header tank and someone turns a tap on in the house so can't see an issue. Electric
showers monitor the flow rate anyway.
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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owelly
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| posted on 22/10/14 at 10:53 AM |
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The only real issue will be the drop in pressure when someone turns a tap on, or when the ball valve opens in the header tank causing a slug of hotter
water to disrupt the shower user. This is why an electric shower is often fed from the cold tank.
http://www.ppcmag.co.uk
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Mr Whippy
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| posted on 22/10/14 at 12:05 PM |
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Be careful of the wiring as mordern high power showers can heat up older shower wiring including the switches. I swtiched to cooker gauge cable and a
cooker switch for mine as that was what was happening before.
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tegwin
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| posted on 22/10/14 at 01:02 PM |
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Generally speaking the header tank usually has a pretty good supply of water (IE doesnt go around the houses before it gets to the tank)
SO if you want mains pressure cold water, that would be a reasonable place to T off from...
Scope out the cold feed in though, if its not 22mm at the tank have a rummage around down the pipe and see if it is 22mm at and point... I'd
preffer to take a T off a 22mm pipe as its less likeley to have issues when someone flushes the craper..
In reality my electric shower is a little uncomfortable if I flush the toilet whilst in the shower.... but now I just use the shower to hose away the
mess and we are all good 
You could put in a dedicated cold feed from the header tank for non mains pressure but you'd need a good enough head (or a pump).. to avoid any
issues but honestly, a cold mains pressure feed will be ok.
[Edited on 22/10/14 by tegwin]
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www.verticalhorizonsmedia.tv
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avagolen
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| posted on 22/10/14 at 06:10 PM |
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Works perfectly in my house.
Mains is a 15mm feed to header tank. T and shutoff before the tank to the shower.
Never had a problem turning on any of the taps or flushing the loo.
Kitchen tap is the only one on the mains. everything else is off the tank.
I do suppose it depends on the mains pressure in your house.
I think the shower specifies a minimum pressure.
HTH.
The Answer for everything, but never the last word....
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