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Thanks. I am not sure whether this remains valid if there is no boiler attached to G1 terminals?

Evening all. Looking for some advice on a wet UFH install. I have a SCU209LED-TM wiring centre, which helpfully has no terminals for a 2 port valve (which is installed on the flow to the manifold). Link here: https://underfloorheatingexpress.com/amfile/file/download/file/6/product/277/...

Here are the rough outputs for the radiator zones: Ground floor = 37,000 BTU = 10.8kW First Floor = 36,000 BTU = 10.5kW Second Floor = 30,000 BTU = 8.7kW

Hello all. I am renovating an old country house and adjoining annexe and am having a crack at the central heating system. We have had a biomass boiler installed with associated thermal store in the outbuilding which has been heating a standard radiator system in the annexe for the past year no...