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Re: OT : Plumbing help as well



Geraint,
If you want a very powerful shower but don't want any header tanks you could
either get a large combi boiler which can heat at least 15 litres/min of hot
water (approx 30kW+) or get a mains pressurised conventional heating system
with unvented cylinder.

All combi boilers restrict water flow rates in order to heat up the water to
the desired temperature.  So in the winter months the flow rate will drop
due to colder water entering your house.  ISTR that combi flow rates are
given at 35oC temp rise.  You'd need a very decent (expensive) combi if you
want a very powerful shower.

If your cold water mains pressure is good, then if you get an unvented
cylinder (150 to 200 litres) you'd get lots of hot water at mains pressure.
If your water pressure is low then you'd need to fit a booster pump.  Either
way you'd get a powerful shower.  The cylinder should reheat in about 20
mins.  Also, with a cylinder, you'd have the advantage of an immersion
heater - so if the boiler ever packed up you could still have hot water.

Regards

Simon



----- Original Message -----
From: <geraintwilliams_uk@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: 26 December 2002 03:02
Subject: [ukha_d] OT : Plumbing help as well


> I have a few questions about central heating systems etc.
>
> Wondered if anyone maybe able to help, and i'd e-mail them direct.
>
> To do with replacing current central heating boiler for what I think
> is called a "system boiler", so I can get rid of the water tanks in
> the loft etc.
> I'd like a very powerful shower as well, so I want to make sure I
> buy the right system. I have a good plumber, but he isn't that
> available and knows zero about electrics and hooking boiler into x10.
>
> Anyone know about central heating systems then ?
>
> Regards
> Geraint.
>
>
>
>
> http://www.automatedhome.co.uk
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