Viessmann HMU Notice De Montage page 10

GB
Replacing the HMU electronics module
09. Check the setting of the CAN bus
terminator switch in relation to the
type of heat generator. Adjust if
necessary.
Heat generator installation
and service instructions
Commissioning
Note
If the HMU electronics module is being
replaced at the same time as the BCU
electronics module, commissioning is
carried out with the "Service assistant"
software tool.
10
(cont.)
10. Fit the wiring chamber cover.
11. Pivot the enclosure upwards and
clip it into place.
Heat generator installation and
service instructions