vr66/2

Hi all, A plumber has fitted (on his recommendation) the following set up: Boiler: Vaillant ecoTEC Plus 2 620 Controls: Vaillant sensoCOMFORT VRC 720F (including weather compensation) Wiring Centre: Vaillant VR66/2 Cylinder: Mixergy MX150 Indirect All was in and well from a central heating...