What if...

[NorthernRaider]

Nix ours was the early type that did not have a circ pump, it was called a thermo something system, you can still get em today in certain applications, esp used with back boiler stoves, the water circulates using the heat rising doofah . I don't think anyone cept those in big houses around our way had circ pumps back then.

Mind you I don't think anyone has NOT got one now so that would be another issue, but at least if they could ignite the boiler they could produce hot water.

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Various snippets covering pumpless systems in assorted applications

http://www.greenbuildingforum.co.uk/foru...1168098081

http://www.canalworld.net/forums/index.p...opic=39641

http://www.navitron.org.uk/forum/index.p...036.0.html

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Dammit, I just clicked on an article on google that showed a central heating system in a house in Ludlow that uses a solar panel / single 110 ah battery to run the ignition and a 12 volt dc circ pump for 3 hours each evening, I closed it before i could copy the URL and now I cannot find the bloody thing again.