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Wonder if you can advise at all, I've had a Viessmann 050 25kw combi boiler with Weather Comp installed to replace my old hot water tank system. The installer has fitted an EPH CP4 RF thermostat and receiver connected to Open Therm, and says that they work together to control the flow...

I'm looking for a method of converting a three port mid position valve to a 3 port divertor (2 position) valve by changing the wiring connections. I've been told it can be done, but can't find anything that says how. Anyone help please? Thanks.

Hi everyone, I have had an independent survey carried out to replace my current 30+ year old boiler. It is a Y plan system, with 10mm radiator piping and 6 radiators. It is controlled by a Hive system. The only hot water usage is for a bathroom and kitchen sink, we have an electric shower - no...