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Hi, I've done a fair bit of googling and reading posts in this forum regarding my current setup. Probably stuck with what I have, but would like to be 100% sure. So any extra insights would be very welcome. Thanks in advance. I have a large 5 bed detached house, 16 radiators in all, with a...

Hi, I've been looking for some info on how to correctly read pump graphs. Information seems to be a bit difficult to find. Anybody with knowhow can give me some details how to read the following chart? (Pump is fixed on stage 1 by setting d19) The residual pump discharge height depending on...

Hi, First post so please forgive me where I go wrong. Wondering if anybody has some detailed knowledge about a suspected bypass valve that is not working as I expect it to. To elaborate: I have a Vaillant Ecotec 637 boiler, with an S-plan layout. Large 5 bed, 3 bath detached, decent...