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I have just installed a setup that dumbrill posted a few years ago but I have one small fault, I cannot get the boiler to provide hot water. I have a tank stat instead of the thermistor, a time clock for the DHW and a sauter 3 port valve wired up as a diverting valve. On initial start up the...

I have had an Avanta 15v fitted for just over a month now, on a micro bore system. The plumber fitted a magna clean and did flush the system. We have since had a blocked radiator which I tackled the other day (drained system and found dirt in rad valve, all OK now). I refilled with x100 and x200...