Viessmann VITOTROL 100 Installation Instructions For Contractors page 10

Electrical connection to the control unit
(cont.)
Connection to terminals X3
A
230V~
X3
1 2 3 4
B
A Terminals inside the wireless
receiver
B Terminals "X3" on the control unit
230 V cables and low voltage cables
must be routed separately.
Recommended connecting cable to the
control unit
■ 2-core cable with a cross-section of
0.75 mm² for low voltage
Note
Leave terminal NC in the wireless
receiver free.
10