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  1. R

    Combi Boilers in Tandem?

    Norcon - thanks for the link, makes an interesting read. So it sounds like it's possible but there's more to it than simply combing the two outlets, though it doesn't sound too complicated. My tripping point maybe that we've only got 15mm to the bath - it sounds like from that thread it would...
  2. R

    Combi Boilers in Tandem?

    BingoBongo in response to your point about hot water draw off's - there's quite a few. 3 showers, 1 bath, adding the sinks up comes to 8 (that figure surprised me, but that includes ensuites, kitchen, utility, etc). Having said that we don't have all the sinks running at the same time...
  3. R

    Combi Boilers in Tandem?

    Good point, but I've got a copy of the original installers installation plan somewhere. My thought was that it was originally spec'd with two boilers due to the number of radiators - but I may be wrong. Both boilers are fed by a single gas meter, so to me that would rule out previous usage as...
  4. R

    Combi Boilers in Tandem?

    Hi All I've got a question which I'm hoping someone can answer - So I've got a Victorian semi, the previous owner had two Vaillant combi boilers installed, one supplies hot water to the ground floor, one to the first floor - heating the same way (why they went for two and not one large one...
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