On Sun, 31 Jul 2005 07:09:08 -0500, "Chris
wrote:

I will go ahead with the zone valve as I do have one. There are a pair of free contacts in the zone valve that can be used to switch the pump on when the valve is open


Good point on using the aux contacts - that is the right way and in a
more conventional design they are used to give the demand signal to
the boiler and indirectly the pump; this all happening once the valve
has opened.

Another thing that you could perhaps do is to fit a cylinder
thermostat on the FIRE cylinder and use that to open the valve....




--

..andy

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