Dear Johan, I can't help you with the Vitotrol, but I do have an advice for you. Instead of switching to room temperature control directly, it could be beneficial anyhow to check whether your heating system satisfies some basic requirements. This could save you energy costs, even if you eventually decide to switch to room temperature control. Without a full specification of your heating system it a bit of a guess for me, but I have the feeling the following could be part of your problem. If you have both floor heating and radiators, you need different flow temperatures for both (lower ones for the floor heating and higher ones for the radiators). To say more I need some information: * Do you have a heat pump that allows for two separate heating circuits for floor heating and the radiators, each with their own heating curve? Or do you have a floor heating mixer that produces less warm water for the floor heating and uses the undiluted warm water for the radiators? *Have you opened all radiator valves to the fullest instead of using them to control the temperature in your rooms? For the proper running of the heat punp this is crucial. * Furthermore, has your heating firm implemented a hydraulic balance with your radiators? Also this is very important for a heat pump to function properly. If you give more specs of your heating system, I may be able to say more.
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