Had a look through the archive but still have a couple of questions.

Gas not being an option unfortunately, looking to replace header and
immersion tanks with some form of `undersink ` heating. To supply kitchen
sink and showeroom basin , replace current dribbling shower pump, non power
shower :-( , with electric shower.

Uvented Undersink appears to mean under a sink at least 4 meters away for
some models though, is this total?

Or can you have a tap tee`d below the 4M limit but overall pipe length to
second tap extends to the limit?

Is it better to have a the heater at the washing machine/sink or
bathroom/ex-water tank space?

Is a copper tank heater that much better than a Screwfix

http://www.screwfix.com/app/sfd/cat/...37130&id=68643

type thing, enameled steel tank?

Is a 9.5kW flow boiler a better solution?

Thanks for any help.

Adam

In article ,
Adam Aglionby wrote:
Gas not being an option unfortunately, looking to replace header and
immersion tanks with some form of `undersink ` heating. To supply
kitchen sink and showeroom basin , replace current dribbling shower
pump, non power shower :-( , with electric shower.

Might be ok for a single person who is out all day and lives on take
aways. For someone who cooks - or a family, totally useless.
--
*Why is 'abbreviation' such a long word?

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in message
...
In article ,
Adam Aglionby wrote:
Gas not being an option unfortunately, looking to replace header and
immersion tanks with some form of `undersink ` heating. To supply
kitchen sink and showeroom basin , replace current dribbling shower
pump, non power shower :-( , with electric shower.

Might be ok for a single person who is out all day and lives on take
aways. For someone who cooks - or a family, totally useless.

Thanks for the input but its a tiny one bedroom flat where the cubic space
taken up by the cold and hot tanks would make more sense as storage.

15L of hot water more than enough to fill both available sinks, showeroom
one is of railway carriage size...

Combi/condensing gas boiler would be preferable but not an available option
on this project.

Had one water outage ever, so unconvinced by reserve water supply reasoning,
specially for drinking water, seen inside a few header tanks, or aquatic
micro zoo may be better name.

Any direct experince anyone?

Thanks
Adam




*Why is 'abbreviation' such a long word?

Dave Plowman London SW
To e-mail, change noise into sound.

On Fri, 16 Jul 2004 12:11:15 GMT, "Adam Aglionby"
wrote:

Thanks for the input but its a tiny one bedroom flat where the cubic space
taken up by the cold and hot tanks would make more sense as storage.

15L of hot water more than enough to fill both available sinks, showeroom
one is of railway carriage size...

Combi/condensing gas boiler would be preferable but not an available option
on this project.

Had one water outage ever, so unconvinced by reserve water supply reasoning,
specially for drinking water, seen inside a few header tanks, or aquatic
micro zoo may be better name.

Any direct experince anyone?

Hi,

If funds aren't a problem and the supply is up to it the best option
might be to get the most powerful electric shower you can.

Another option would be to have 2 15l heaters in series. One could be
switched on for washing up water and both for a shower.

This should give you at least 50L of water at shower temperatures
using a thermostatic shower valve, which works out to a 5 min shower
at 10L/minute which is not tooo bad.

How powerful a shower feels depends on the pressure as well as flow,
it depends on whether you want to rinse shower gel off or have a
vertical bath

cheers,
Pete.

On Fri, 16 Jul 2004 01:12:33 GMT, "Adam Aglionby"
wrote:

Had a look through the archive but still have a couple of questions.

Gas not being an option unfortunately, looking to replace header and
immersion tanks with some form of `undersink ` heating. To supply kitchen
sink and showeroom basin , replace current dribbling shower pump, non power
shower :-( , with electric shower.

Uvented Undersink appears to mean under a sink at least 4 meters away for
some models though, is this total?

Or can you have a tap tee`d below the 4M limit but overall pipe length to
second tap extends to the limit?

Hi,

The instructions on mine state it's to accomodate any expanded water
so it should be OK.

Is it better to have a the heater at the washing machine/sink or
bathroom/ex-water tank space?

Depends on the length of the pipe runs, they will reduce the capacity
of the heater effectively and waste some heated water.

Is a copper tank heater that much better than a Screwfix

http://www.screwfix.com/app/sfd/cat/...37130&id=68643

type thing, enameled steel tank?

It depends on how much water you require, I reckon a 15L though a TMV
would give you 25L of shower temperature water but pipe runs will
reduce that.

There is a 30L model available from somewhere, I could try and find it
if you want.


Is a 9.5kW flow boiler a better solution?

Depends on how much you would need to spend on extra wiring as well.

Another option could be to use a higher grade (pressure) immersion
tank with an expansion vessel connected to mains via a pressure
reducing valve, though this is not a 'normal' way of doing things.

cheers,
Pete.

Uvented Undersink appears to mean under a sink at least 4 meters away for
some models though, is this total?

This is because it doesn't have a built in expansion vessel and uses the
supply/tap pipework for the same purpose. Buy the type that does have an
expansion vessel and you lose the pipework length requirement.

Christian.