Viessmann Vitodens 100-W WB1B Installation And Service Instructions Manual page 15

Electrical connections
% Gas fired condensing boilers only:
Cylinder temperature sensor (plug
on the cable harness outside the
control unit)
Note
Gas fired condensing boiler with-
out DHW cylinder:
For operation without a DHW
cylinder, set rotary selector "tw"
to "0".
A Only for weather-compensated
mode:
Outside temperature sensor
(accessory)
B Open room thermostat
Remove jumper D when making
this connection.
C Connection line (accessory)
Outside temperature sensor (accessory)
1. Plug the power cable supplied with
the outside temperature sensor
into slot "X21".
(cont.)
D Jumper
E Power supply (230 V, 50 Hz).
The power supply must be
equipped with a neutral conduc-
tor. Water pipes should be con-
nected to the earth bonding of the
house in question.
F Vitotrol 100
2. Connect the outside temperature
sensor to terminals 3 and 4.
Installation sequence
Danger
Incorrect core termination
can cause severe injuries
and damage to the equip-
ment.
Take care not to inter-
change wires "L1" and "N".
Separate installation
instructions
15