Vaillant 0020259834 wired VRC 700 2 zone radiator solar heating control pack DHW
Part Number: 0020259834. Vaillant VRC 700 is designed to work with more complex systems. Vaillant wired VRC 700/6 0020184838. Vaillant wired digital programmable thermostat VR91 0020171334. Vaillant wiring centre VR70 0020184844.