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Connecting the circulation pump
Connecting circulation pumps with enable contact
Circulation pumps 230 V~
A
aVG aVG
0-10 V
1
OUT
145
0-10 V
145
B
Fig. 8
Pump module PM1
A
Vitotronic control unit
B
Circulation pump
C
Circulation pump power supply
sL
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
aVG
KM-BUS cable between pump module and
Vitotronic control unit
0 - 10 V OUT 0 to 10 V output for control voltage for
speed control
(cont.)
-
U
+
S P
Ö
2
hH
-
+
-
+
External
ON/OFF
sL
?
L
N
PE
C
Installation sequence
11
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