Gas boiler control

["Pete Shew" <ukha_d@xxxxxxxxxxxxxxxxxx>]

I have just received a nice large gas bill. What I am wondering is are
there any smart central heating controllers that, for example, take account
of the temperature drop in the circuit, to reduce boiler on time.

I have a fairly large system with two boilers in tandem and three zones
plus hot water. All radiators have thermostatic valves, except bathroom
towel heater type which I shall be fitting soon. The current control is by
means of a triple and a single time switch controlling zone valves. These
are commoned via a contactor to drive both boilers.

However, I don't use both boilers at the same time as one is electrically
and liquidly isolated. From time to time I switch the active boiler, and
haven't yet felt the need to run both to provide the required heating.

If there are no products commecially available, has anyone experimented
with microcontroller heating control?

Pete



UK Home Automation Meet 2004 - BOOK NOW!
http://www.ukha2004.com

http://www.automatedhome.co.uk

Member Offers - http://www.freeranger.co.uk/ukha