I have put my Commander away. Don't use it any more. The reason: Most information is in German, and being a Norwegian, my German is not good enough to get my Commander going properly. I have been waiting for translations since I bought the Commander about 2 years ago. But so far the only answer we get is: It will come when we are ready.
And for the same reason, very few Commanders have been sold in Norway. I get the impression that Viessmann is not very interested in selling to countries outside German-speaking ones.
regards
Björn Bednar