Re: [OT] Showers

[Keith Doxey <ukha@xxxxxxx>]

Quoting Stuart Whyte <lists@xxxxxxx>:

> Hi All,
>
> I have got a problem with my Shower/immersion heater, and all the
plumbers I
> have phoned have never heard of a system like mine.
>
> I have uploaded an image here:
>
> http://www.futureflat.org/images/showerimage.jpg
>
> Red = Hot water
> Blue = Cold water
>
> The hot and cold feeds near the center are for the shower.  The cold
is a
> mains pressure feed, and the hot goes to the shower.  Only the hot
isn't hot
> :-(  It stays hot for about 30 seconds, then just runs cold.  Its
DEFIANTLY
> a problem at this end, cause the "hot" pipe feels cold when
the shower is
> running.
>

Sounds like a problem with the mixer tap allowing the higher pressure cold
water to flow back up the hot pipe. If you turn the shower to 100% hot,
does it
then get warm?

Could be a non-return valve scaled up or jammed open, possibly even back
pressure cased by a blocked shower head.

Keith

www.diyha.co.uk
www.kat5.tv

UKHA 2004: 15th and 16th May 2004
EARLY BIRD RATE EXPIRES 31/12/03!
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