45
Without an additional enable contact
Function
External demand
Control unit
EA1 extension
Connection
0 to 10 V input
Note
Ensure galvanic separation between the earth conductor and the negative pole of the on-
site power source.
U
+
L N
L
N
fÖ
S P
aBJ
Ö
[{{]
0-10V
f-]
A
+ -
0 to 1 V
■
Boiler blocked
■
Butterfly valve closed
■
Boiler circuit pump or shunt pump off
1 to 10 V
■
Enable boiler; the boiler is held at its minimum temperature
■
Butterfly valve open
■
Boiler circuit pump or shunt pump enabled
■
Set boiler water temperature:
1 V
≙
10 °C
10 V
≙
100 °C
Lead boiler
Only for low temperature boilers:
On the lead boiler, the voltage must be higher than 1 V.
Parameter
■
Note parameter "46" in the
"General"
group.
■
A temperature or output can be specified via the 0 to 10 V input. Note parameter "45" in
the
"General"
group.
External functions — multi boiler system
Connecting the external control unit
(cont.)
5863679
Installation
Summary of Contents for Vitotronic 11 CC1E
Page 118: ...118 5863679...
Page 119: ...119 5863679...
