On 2006-10-24 23:29:41 +0100, "Roger Mills" said:

In an earlier contribution to this discussion,
Andy Hall wrote:

On 2006-10-24 14:09:29 +0100, "Roger Mills"
said:

It is feasible to add another zone to your existing central
heatingsystem, and put a normal 'wet' radiator in the conservatory?
Assuming you have a gas fired system, this would be the most
efficient solution.

This is certainly going to be less expensive to run than electric
heating in the conservatory. It is supposed to be a separate zone or
have thermostatic control valve on the radiators.


I'm not sure of the legalities but, from from a practical point of
view, it really needs to be a separate zone. If you simply have a rad
on the main circuit, with a TRV, there's no possibility of heating
*just* the conservatory.

OK, yes, but then why would one want to heat just the conservatory?
If that were the intent, wouldn''t it also be logical to make each room
a separate zone with thermostat and timer?