Control Connections
35
Electrical Connections
Overview of electrical connections and plug-in connectors
Vitodens built-in junction box for circulation pumps
a
Boiler circuit pump
b
Heating circuit pump
c
Circulation pump for DHW tank
heating
Control unit
Low voltage connections
Line voltage connections
(230, 60 Hz) from Power/Pump
Module
Remote control WS/RS
External switching of heating
program/External heat demand
Alarm output
*1
Extension kit for heating circuit with
mixing valve
Vitotronic 050/Dekamatik-HK1
control unit
Wall-mount base
External burner disable
Outdoor temperature sensor
O
DHW tank temperature sensor
P
Low-loss header temp. sensor
R
Power supply connection
from Power/Pump Module
(230 VAC, 60 Hz)
Q
Not used
*1
An expansion board is required for connection purposes. Direct connection is not permitted. Please contact Viessmann to order an
expansion board (optional).
5285
960
v1
.2
20 20A 21
40
100
X3B X3A X4
L
N
X3
1 2 3
3 4
2
1
X7
X2
1 2 3
3 4
2
1
X6
3 4
2
1
X5
3 4
2
1
X4
R
O P
Q
Summary of Contents for Vitodens 200 WB2 11-44
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