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Hello, That solution works OK for the upstairs thermostat (which is downstairs in the hall) although it seems a bit of a waste to run the hall radiator almost continuously to try to get 35. As far as the downstairs zone is concerned, the problem is that I don't want the lounge to be 25...

(Yes I know this is my second topic in one day!) Our system has 2 zones, one upstairs with its thermostat and open radiator in the downstairs hallway. The downstairs zone has its thermostat and open radiators in the lounge. I can't understand how it's supposed to work. The upstairs rads...

We have a new installation with a condensing boiler feeding a 2 zone radiator system. Initially we had a lot of noise and the plumbers came back and installed a Danfoss AVDO automatic bypass valve. This seems to have cured the noise but the radiators don't get as hot as they used to. However...