Yes, in practice if you want to use a combi boiler with solar thermal you have to add a storage cylinder for the solar-pre-heated water anyway, as a direct feed from the panels wouldn't provide hot enough water fast enough.
I suspect though that, as eg. combi boilers are specified in building regs for new houses, it is just that a list of certain boiler models are designated as officially combis and that's that, however you subsequently tinker with them.
There is some confusion over when the subsidy is going to come in. It was originally supposed to be this April, then it seemed like it was cancelled altogehter, now maybe next April or maybe sooner than that.
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Date: 2011-09-30 10:45 am (UTC)I suspect though that, as eg. combi boilers are specified in building regs for new houses, it is just that a list of certain boiler models are designated as officially combis and that's that, however you subsequently tinker with them.
There is some confusion over when the subsidy is going to come in. It was originally supposed to be this April, then it seemed like it was cancelled altogehter, now maybe next April or maybe sooner than that.