Be interested to know this also. Just had a Viessman 100 combi installed
in opentherm and while controls for CH and DHW work, the feedback for
hot water temp does not
Likewise. I have found you are able to set the water temperature using
nest. You can test this by setting the DHW temp in nest and then
verifying in the ViCare app. However, reporting of the actual water temp
is stuck at 49 deg for me and doesn't cha...