On Sun, 24 Oct 2004 10:30:05 GMT, Rick Dipper wrote:

I replaced it with some simple electronice, when the wood fire is
hot the gas boiler switches off, and all the zone valves open. When
the wood fire is cold, the zone value closes it off.

What is the state of the zone valves without power?
Is the gas boiler isolated when the wood fire is hot or does hot water
circulate through it?

--
Cheers
Dave. pam is missing e-mail