Viessmann CO detector Installation And Service Instructions For Contractors page 7

Connecting the CO detector to the control unit
Danger
Incorrect wiring can lead to seri-
ous injury from electrical current
and result in appliance damage.
Take the following measures to
prevent wires drifting into the
adjacent voltage area:
A Vitotronic control unit main PCB
B Connecting cable with plug (stand-
ard delivery)
X4
A
B
Route LV leads < 42 V sepa-
rately from cables
> 42 V/230 V~/400 V~ and
secure with cable ties.
C
VCC
GND
C CO detector
CO
7