On Wed, 3 Nov 2004 10:31:17 -0000, "Pandora"
wrote:

Does anybody know of a good quality hot water cylinder which has a facility
to replace the cylinder thermostat with a temperature sensor for better
control?

The hot water system will be unvented and I'll be using a condensing boiler.


If it's an unvented storage system you can't install it as a DIY job
in the UK. However, since your address suggests Belgium, maybe it
is allowed there.

To answer your question, though, there are electronic thermostats that
will fit a standard cylinder if you remove the insulation to give a
good contact. There is a separate sensor and controller.
A good example of that is the Danfoss Randall TP75 family (direct
wired and RF versions).

Alternatively there are boilers which will allow connection of a
bullet type temperature sensor (e.g. MAN Micromat).
For this type, the cylinder needs to have a pocket fitted by the
manufacturer. This is basically a closed tube into the cylinder and
the sensor is inserted into that, thus sensing the temperature in the
core of the cylinder rather than the surface of the copper.




--

..andy

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