Viessmann VITODENS 100-W Installation And Service Instructions Manual page 16

Installation sequence
Electrical connections
% Cylinder temperature sensor (plug
on the cable harness outside the
control unit)
Note
Gas condensing boiler without DHW
cylinder:
Cable entry
B
A Power cable, remote control con-
necting cable
B LV leads (sensor leads)
Outside temperature sensor (accessory)
1. Plug the power cable supplied with
the outside temperature sensor into
slot "X21".
16
(cont.)
A
2. Connect the outside temperature
For operation without a DHW cylin-
der, set rotary selector "
sensor to terminals 3 and 4.
tw " to "0".