The Viessmann 7841527 Control Console is a replacement control component designed for compatible Viessmann WB1BC 35 gas-fired boiler systems. It interfaces with the boiler’s controls and operating components to manage heating functions based on system requirements and temperature signals. Used in residential hydronic heating applications, the console supports coordinated burner operat... https://www.partshnc.com/7841527-viessmann-control-console-wb1bc-35