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    Vaillant System Question

    Thanks for that Simon. I've got no problem with trying it; just trying to understand what circumstances suit water priority and what circumstances suit parallel. Geoff Atkinson
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    Vaillant System Question

    Thanks for the reply Dave, but I think you have misunderstood my question. I know how to change it, I'm trying to decide if I should. I need to know the pros and cons of each option. Thanks. Geoff
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    Vaillant System Question

    I have a Vaillant system comprising Ecotec System Boiler, Unistor unvented system, and VR 65 control unit with NTC connection to the cylinder. By default the boiler is set to give priority to hot water requests (thus closing the CH valve) but this can be changed to allow both heating and hot...
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    Vaillant Question

    This should be an easy question for the Vaillant experts out there. I have recently had a 618 system boiler, Unistor 155, VR 65 and VR 360 programmable room stat fitted. The VR65 is communicating with the Unistore via the NTC. I have set the DHW temperature via the VR360, and everything seems...
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