dreadpirate57

Thanks John, We have not yet wired up from an electrical perspective, but the zone valves and first fix plumbing and cylinder are all piped up. Am I too late? I'd ask my plumber but he has a tendency to overreact. Cheers.

I’m struggling to choose my system boiler and controls, between all of the different brands, smart thermostats and technologies, I’m confused. Physical set up is as follows: System boiler and 210l Indirect unvented gledhill hot water cylinder 12 radiators across 3 bedrooms and one bathroom, 3 - 4 sinks 50 sqm of wet ufh in one open plan kitchen (one thermostat zone), supplied by continal. Calculated at 4.4kw. Salus wiring centre. My plumber has setup with 3 2 port zone valves, one for ch, one for cylinder, and one for ufh. He’s on the old school side, so not too famililar with the newer smart elements of heating systems. I’d like homekit compatibility and for the system to be efficient, perhaps making use of opentherm / weather compensation. Does anyone have a similar setup and could you provide any recommendations on system boilers and controls? So far ive looked at Viessmenn Vitodens 100-W B1HF 25kW System and Worcester Bosch Greenstar 4000. It looks like bosch easycontrol won’t work however, due to the addition of ufh. Initially I was looking at tado but its unclear if it would work in the above arrangement. Any advice / recommendations would be very much appreciated.