Mel B Posted December 6, 2010 Share Posted December 6, 2010 The water boiler we have, a Truma Ultrastore BS 10 (10 litre, I think rather than the BS 14 which is a 14 litre one). It doesn't actually have an auto-dump valve, just a manual safety/drain valve, which we have to open ourselves in the case of impending frost to ensure it doesn't freeze, so we don't actually have the 'problem' of it dumping its load inadvertently, but obviously we have to be aware and do it when necessary. Link to comment Share on other sites More sharing options...
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