Hi,
I've had an ecoTec plus 637 in for four years now running two zones and unvented cylinder with the VRC470, VR61 and a VR81. Sadly we just converted the basement and added another zone and Vaillant technical said I couldn't expand my install without moving to their new VRC700 range.
I've...
Hi,
I currently have a 2 zone Vaillant setup, with a VR61 wiring centre and the VRC-470 as the main zone1 control and VR81 as the zone2 control. This was all installed about 2 years ago, however we have just had the basement converted and so now have an additional zone. Don't worry I planned...