The Valencia have a plastic balancing insert which screws down around the pin - although I was pretty sure on mine it's black plastic not white... in...
Indeed, it sounds like there is no automatic bypass valve as if there was one then only one or two radiators opening slightly would cause most of the...
Cold weather boost (I presume you mean) is based on the difference between the set point and outside temperature. In 19.31 this was hard wired to 10...
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