Hehe, yeah, it's the mode for 'staying up late' and letting it heat the house longer. Apparently Viesmann associates that with cocktailparties. I guess that's how they do it at their offices... The other is the Piggy-bank-setting, for freezing your ass off while you put the saved money in the bank. With which you can pay for their ultra-high-end-expensivo heating system I guess...
Nah, j/k, we're really happy with it :P