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Installation sequence
Connecting the circulation pump
Separate power supply or 230 V~ circulation pump with power consumption greater than 2 A
A
aVG aVG
0 - 10 V
OUT
145
145
B
Fig. 9
Pump module PM1
A
Vitotronic control unit
B
Circulation pump
C
Contactor
D
Circulation pump power supply 230 V/50 Hz
E
Power supply for on-site contactor
sL
ing the circulation pump power supply
0 - 10 V OUT 0 to 10 V output for control voltage for
speed control
12
(cont.)
-
U
+
S P
Ö
2
1
hH
+ -
-
+
0 - 10 V
External
ON/OFF
for switch-
D
sL
?
E
L N
N
L
D
L
Floating switching contact for enabling the circu-
hH
lation pump
Enable contact can be connected as N/C or N/O
contact: See fig. 4, page 8
KM-BUS cable between pump module and
aVG
Vitotronic control unit
N PE
C
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