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Thanks. Should I do this as the heating comes on or wait a short while and then do this?

Thanks for coming back on this, very kind and much appreciated. Answers to your questions below: TRVs - Drayton RT212 Vaillant Boiler - EcoTecPlus 637 system boiler. The boiler was installed back in 2012 but the pump was replaced last year (2024). It was replaced just shortly after all the...

Hi, I was hoping someone could help with some insights please. Set-up: - Vaillant System boiler (with built-in pump inside boiler) - x2 zones (x1 underfloor in the kitchen; x1 central heating rest of house) - x10 radiators (x8 wall rads each with dreyton TRVs/lockshields that are all newly...