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I want to replace my Hvac
today Remeha told me that the Remeha Tzerra 39C CW5 is there most innovative HVAC.

who has this Hvac allready?
I have to be sure that the Opentherm Hvac solution http://www.domoticaforum.eu/viewtopic.php?f=70&t=7242 works on this one!

https://docs.google.com/viewer?url=http ... eiding.pdf

I wend for the remeha calenta CW5, it has a more energy efficient pump

The Tzerra hasn't got an energy efficient pump? It's a newer model.

yes thats what I thought also, but look at the specs
but its much cheaper also than the Calenta, and there is always a reason for that.....

Hmm I see. It's possible though, it's an extra option. It costs € 196,--

nl.remeha.com/fileadmin/user_upload/Pri ... t_2012.pdf