What is it?
The Vaillant VR33 OpenTherm module ensures that your Vaillant boiler can communicate OpenTherm. This allows you to connect OpenTherm modulating thermostats such as Anna and Adam HA to your Vaillant central heating boiler.
What does it work with?
You can use this VR33 module with the following Vaillant central heating boilers:
- Vaillant EcoTEC Plus
- Vaillant EcoTEC Pro / Classic
- Vaillant EcoCOMPACT
- Vaillant hrPRO
- Vaillant hrSOLIDE
- Vaillant hrSOLIDEplus
- Vaillant hrEXCLUSIEF (from manufacturing year 2006)
The Vaillant VR33 OpenTherm module is NOT suitable for all Vaillant thermoCOMPACT variants.