Viessmann Vitotrol 100 UTDB-RF2 Installation And Service Instructions Manual page 8

Installation sequence
Installing and connecting the wireless receiver
2.
4.
1.
Insert the wireless receiver cable into the
control unit enclosure and push the plug
into "X5". The plug must click home.
8
3.
Note
Route the lead in such a way that it does
not become trapped as the control unit
enclosure is closed.
(cont.)