Viessmann Vitodens 200-W Installation And Service Instructions Manual page 24

Installation sequence
Electrical connections
Connection of accessories
Power supply of all accessories via the boiler control unit
A
E
Some accessories with direct power supply
A
E
A Boiler control unit
B Extension kit for heating circuit with
mixer M2
C Extension kit for heating circuit with
mixer M3
If the current flowing to the connected
working parts (e.g. circulation pumps) is
higher than the safety level of the acces-
sory, the output concerned should only
be used to control an on-site relay.
24
(cont.)
B
B
D Extension AM1, EA1 and/or solar
E ON/OFF switch
Accessories
Extension kit for heat-
ing circuit with mixer
Extension AM1
Extension EA1
Solar control module,
type SM1
C
C
control module, type SM1
D
D
Internal fuse
protection
2 A
4 A
2 A
2 A