The VR 61 mixer module has been designed to allow Vaillant low voltage 'ebus' controls to be integrated within traditional 230V S-plan type installations to provide total system solution comprising of an ecoTEC system or open vent boiler, uniSTOR cylinder and control. Installation is simplified with all components being supplied by one manufacturer.

The VR 61 is an intelligent wiring centre for use with the VRC 430 weather compensator and Vaillant cylinders only, and can be used to connect a hot water and two central heating zones, each independent time and temperature settngs. Additionally a storage loading pump or secondary circulation pump can also be connected.