Viessmann EM-EA1 extension - Connection with System Blocking Via 230 V Fault Message Input; Connection with System Blocking Via 24 V Fault Message Input: DI1

12
Connection with system blocking via 230 V fault message input: fD
hH
[{]
fÖ
?
1
?
?
fD
A
B
?
N
L
Fig. 9
A
Fault message facility
B
Junction box
■
Fault message input 43-1 and conductor L of the
power supply at plug
fÖ
must be connected in
phase.
■
Rated current at floating fault message output
hH
:
Max. 1 A ~.
The fault message is active if 230 V voltage is present
at digital input 43-1. The heat generator is blocked.
Floating fault message output
hH
is switched over from
"Ö" to "S". Fault message F.104 is shown.
Connection with system blocking via 24 V fault message input: DI1
Example: Connecting a condensate removal pump
[{][{][{]
hH
1
2
3
4
5
6
1
2
1
2
1
2
+
-
+
-
?
N
L
Fig. 10
Installation sequence
Connecting the fault message input and fault… (cont.)
6131087
Installation