VIESSMANN Best.NR: 718 7088, Vitotronic 200, type: KW2 heating control unit with boiler sensor, tested in top condition, is fully functional : Amazon.de: DIY & Tools
Datenblatt Vitotronic 200 - Viessmann
DB Vitotronic 200 KW1,2 | PDF
VIESSMANN Vitotronic 200 Boiler Control Control User Guide