46
With an additional enable contact
Function
External demand
Control unit
EA1 extension
Vitotronic control unit
Connection
0 to 10 V input
Note
Ensure galvanic separation between the
earth conductor and the negative pole of
the on-site power source.
aVH
.2/
aVH
.3
U
+
L N
L
N
fÖ
S P
aBJ
Ö
[{{]
0-10V
f-]
A
+ -
146
A
B
2 3
1
A
Floating contact
B
Plug
aVH
of the control unit
Contact
■
Closed
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.
■
Enable boiler; the boiler is held at its mini-
mum temperature
■
Butterfly valve open
■
Open
■
The butterfly valve is closed after approx.
5 min.
■
External burner start not possible
■
The butterfly valve is closed after approx.
5 min.
■
External burner start not possible
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.
■
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
Содержание Vitotronic 11 CC1E
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