>Presumably the intelligent controller is programmed to provide a certain flow temperature based on outside
>temperature and the insulation profile of our house.
How does it know the 'insulation profile' of your house?
Are you sure that the 'intelligent controller' does not also act as a thermostat - most of them do. They use the external temp sensor to work out when to switch the CH on. Earlier if it's cold outside, later if it's warm.
I think current building regs state that central heating systems must have a thermostat in one room and may have TRVs in other rooms (as well as a timer). They must also be fully pumped and have a bypass if the boiler manufacturer specifies one.
My TRV heads are attached to the valve body with a knurled ring. There is also the option for Zigbee controlled heads so you can change the temp in the bog from your phone, although in my house I think that is a solution looking for a problem.
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