On 19/03/2018 10:56, Tricky Dicky wrote:
Tim the valve itself is crud free and the pin pushes and releases easily it is the head itself that is the problem.

Chris the room temp was set at 21C, Hive itself seems to do a good job of not letting the temp rise no more than +/- 1C. On its maximum setting the valve should not be closing until the temp rises at least 6-8C above that. The fact that it was still closed at 2C below the room temp setting means it has an inaccuracy of 10C that's some range? Looks like I will need a better valve. Any suggestions?

Richard


No, If on its "fully on" setting its closing the valve before the room
gets above 21C, then bearing in mind what you have said about the
freedom to move of the "wet" part it looks like you have a faulty head.

Your web link was to a screw-fix valve I think, if so take just the head
back, they may let you just swap the head and see if another one of the
same type works better.

One final thought, there aren't any washers or spacers between the valve
and the head that have been omitted on assembly? The behaviour you
describe implies that the actuator is "too close" to the valve.

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Chris B (News)