On Jul 26, 9:02*pm, "GB" wrote:
NT wrote:

You could use a copper hot water cylinder with a header tank, or a
combined fortic tank. In both cases the HW isnt at mains pressure,
eliminating legal and safety issues, and making it easy to get hold of
the necessary tank/s for peanuts used.

Thanks very much for all the suggestions. I can't find an unvented direct
tank that will fit into any of the spaces. Besides that, they are all rather
expensive, as you say.

That leaves me with two alternatives:

1. Is a combination cylinder + header tank. That would work, but it's not
ideal as the pressure would be quite low. OTOH, as you say, there are no
safety issues. Where do I look for a secondhand one of these?

any plumber / heating engineer / scrap dealer / ebay / a local company
could keep the next one for you etc


2. Is an instantaneous electric water heater. That's beginning to look like
the simplest and cheapest solution. Do you know if there are any special
regulations for fitting these, as there are for Megaflos and the like?

the issue is the current draw. To fill a bath at sensible speed would
take a whole lot of power.

Of course there is this way to do it
http://wiki.diyfaq.org.uk/index.php?..._Water_Systems

I don't really fancy fitting a Main hot water heater, as I want to be
gas-less if at all possible.


NT