Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 24

Electrical connections
Connecting pumps
230 V~ pumps with power consumption greater than 2 A or high efficiency circulation pumps
Pumps with switching input
N L
C
L N
B
Fig. 14
Pump
A
To the control unit
B
Contactor
C
Separate mains connection (observe manufactur-
D
er's instructions)
Pumps 400 V~
Rated current for switching the contactor: 4(2) A~
L1 L2 L3 N PE
N L
C
B
M
A
3~
Fig. 16
Pump
A
To the control unit
B
Contactor
C
24
(cont.)
D
L N
L N PE
External
ON/OFF
A
Pumps without switching input
N L
C
L N
B
Fig. 15
Pump
A
To the control unit
B
Contactor
C
Separate mains connection (observe manufactur-
D
er's instructions)
D
L N
L
N PE
A