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

Installation sequence
Electrical connections
% Gas condensing boilers only:
Cylinder temperature sensor (plug
on the cable harness outside the
control unit) or connect the control
box (supplied with the system boiler)
if a 230V 2-port valve and cylinder
stat are used in a 4-pipe installation
(see separate installation instruc-
tions)
Note
Gas condensing boiler without DHW
cylinder:
For operation without a DHW cylin-
der, set rotary selector "
A Only for weather-compensated
mode:
Cable entry
B
A Power cable, remote control con-
necting cable
B LV leads (sensor leads)
16
(cont.)
B Open Therm device
C Connecting cable (accessory)
D Jumper
E Power supply (230 V, 50 Hz).
F Vitotrol 100
tw " to "0".
A
Outside temperature sensor (acces-
sory)
Remove jumper D when making
this connection.
See page 17.
Remove jumper D when making
this connection.
Separate installation instruc-
tions