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    Vaillant EcoTec Plus 428 constant cycling

    Hello All, Bear with me please while I explain my issue. In the meantime I have been trawling this forum to seek answers to my issues and am well aware that the Vaillant 428 has problems. We have the Vaillant 428 EcoTec plus installed for about 15 years. Its an extended bungalow (we have an...
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    Vaillant EcoTec Plus 428 range rating

    Hi First post but I have read a bit before doing so. I've just had a 428 installed to replace an aeging Potterton in an open vent system. I understand the need to range rate the boiler. I have 13 rads and a megaflow for HW in a challet bungalow - reasonably well insulated. Most of the...
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