Thanks. Vaillant controls are a bit of a mine field, not sure exactly what I would need? Vr66 wiring centre, weather comp sensor, not sure of which thermostats for both floors and then how to incorporate a vr10 sensor for dhw temp.There brilliant and priority hot water and wc heating but you will have cooler rads then stock temp etc
Hw priority would be great, can set flow at higher temp for quicker recharge
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