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Hi I've got a problem with a cylinder (below) that only seems to produce lukewarm water : The water pipe going into the cylinder from the boiler system (shown below) is red hot when the hot water is switched on : But the pipe at the top of the cylinder is only lukewarm to...

Hi, I've got a Drayton M1 3 port mid position valve controlling the Water / Heating flow in my house. At the moment the radiators always come on, even if the thermostat is turned all the way down and heating is set to off on my programmable timer. If I unclip the actuator from the valve...