"Chris Harris" wrote in message
...
It is uk.d-i-y. the onus is on you to state you are not in the UK. The
southern Ireland posters do that, and their standards in most things are
not far off ours.
Ok fair enough you have made
your point, and point taken. But the onus is on
you to answer the question and not to preach
who can and can't install any system.
You responded with one liners and never explained. If UK regs don't apply
to you it is up to you to say so. You were given the reasons why a DIYer
can't install an unvented cylinder in the UK and a better alternative. That
is not preaching.
Now I've been doing a fair bit of reading today,
and thinking where I could
put in an unpressurised heat bank. Might be
able to squeeze one into the
back loft, definitly could get anything in the
main loft.
Does anybody do a design service? Or more
to the point who does a good fair,
unbiased, design service?
The DPS sites give a load of on-line, and downloadable, design software.
What you need is calculate the rad sizes, then this will give you the boiler
size. Calulate the heat bank/thermal store size with the appropriate
software on the DPS site. Then you can get a heat bank that has all the
controls, motorised valves, elecrical box, etc in one package. Look at the
DPS site for customers examples. All you need do is connect up the boilers
flow and return and the radiator flow and return to the appropriate
connections, the power, clock and the room stat. These can be pre-wired
into the box and it is a matter of running a wire out to each component.
Then it is a matter of sizing up the CH pipes.
If I'm going down this route I would like to
have at least a plan, if not a
materials list, drawn up by a pro. As I will
be importing almost everything, either because
I have to or just to save costs, I would like to
get it right.
Firstly get kit which can be serviced with available parts where you are,
and that locals can service. What is the most common oil boiler with parts
available on the islands? Get one of these. Heat banks are simple and
service free. The locals probably will not have heard of them, but the
logic is easy to follow for even a dumb plumber. Unvented cylinders require
pressure controls and if these go then you have no hot water and you need to
source the parts and no hot water.
Try DPS as a first stop, I'm sure they have a design service. They may
throw that in for free if you buy a simple heat bank from them. They will
need a plan of your house. This probably can be on A4 paper, with room
sizes, what type of walls and floors, windows sizes, single or double
glazed, insulation levels, boiler location, heat bank location, etc.
A TIP:
Go for an "integrated" heat bank, which provides CH and DHW, with a large
backup electric immersion. If the oil boiler is down then electricity will
heat the heat bank cylinder, and hence the house and hot water until the
boiler is up. Essential in a part of the world where most parts have to be
imported and may take time with long outage times.
Integrated heat banks are the only devices that give full CH/DHW backup.
Heat bank use standard heating pumps. I assume these are available on the
islands off-the-shelf. They operate on flow switches, which probably are
not available on the islands, so it may be worth your while ordering one of
these as a spare, just in case.
Is all equipment British? Don't you import any from Argentina? If so are
they local makes or imported Italian or Spanish?
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