Join Date: Nov 2010
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We've got a 708G and it has the Traum blown air heating. This means that it has the usual button on the boiler that releases the water and inhibits the hot water if it detects the temperature around the boiler is less than 8 decrees C, this does not effect the heating though.
PM me and I will do my best to send you some images of the relevant pages in the owners manual, which we have.
Good luck with it, we absolutely love ours.