Introduction
This document details the installation of the Viessmann OpenTherm Input Module 0-10V (Part No. 7249 069). It facilitates advanced heating control by integrating a 0-10V modulating signal with compatible Viessmann boilers.
Compatibility
This module is designed for use with the following Viessmann boiler series:
- Vitodens 100
- WB1A series
- WB1B CombiPLUS series
- B1HA series
- B1KA series
Functionality
Leveraging the OpenTherm (OT) protocol, the module connects a boiler with a room controller, enabling the controller to request heating and modulate the boiler's heat output via a 0-10V DC signal.
Safety & Installation
Installation must be performed by a qualified professional. Key safety measures include deactivating power and gas supplies. Only original or Viessmann-approved parts should be used.
Installation Steps
The process involves mounting the module, connecting wiring according to specific boiler series diagrams, and ensuring proper cable management. Detailed wiring diagrams are provided for different boiler models.
Troubleshooting
The module features LED indicators for status. Common issues like communication errors can be addressed by verifying connections, power supply, and the 0-10V input signal as outlined in the document.
