Electrical Connections - Viessmann VITODENS 100-W Installation And Service Instructions Manual

Installation sequence

Electrical connections

X21 X7
X20
C
4 3 2 1
OT
A B
A Only for weather-compensated
mode:
Outside temperature sensor (acces-
sory)
B OpenTherm device
C Connecting cable (accessory)
D Jumper
E Power supply (230 V, 50 Hz).
See page 17.
F Vitotrol 100 or on-site room temper-
ature controller (230 V switched
input)
Remove jumper D when making
this connection.
Separate installation instruc-
tions
16
GAS PUMP FAN
?
Information on connecting
accessories
For this connection, observe the
separate installation instructions
provided with the accessories.
D
X1
L N 1 L N
E F