Overview
All of the components and most of the wiring is identical to those used for the S-Plan All you need to do is find the brown on each HEATING zone and wire in a new 5 core if the Thermostat is on 2 or 3 core
All of the components and most of the wiring is identical to those used for the S-Plan All you need to do is find the brown on each HEATING zone and wire in a new 5 core if the Thermostat is on 2 or 3 core