Connection With System Blocking Via 230 V Fault Message Input; Connection With System Blocking Via 24 V Fault Message Input: Di1 - Viessmann EM-EA1 extension Installation And Service Instructions Manual

Installation sequence
Connecting the fault message input and fault...

Connection with system blocking via 230 V fault message input:

hH
fD
1
?
A
L
?
N
Fig. 9
Fault message facility
A
Junction box
B
Fault message input 43-1 and conductor L of the
■
power supply at plug
fÖ
phase.
■ Rated current at floating fault message output
Max. 1 A ~.

Connection with system blocking via 24 V fault message input: DI1

Example: Connecting a condensate removal pump
[{] [{] [{]
1 2 3 4 5 6 1 2
Fig. 10
12
[{] fÖ
? ?
B
must be connected in
:
hH
hH
+ - + -
1 2 1 2
(cont.)
fD
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
"Ö" to "S". Fault message F.104 is shown.
L
?
N
is switched over from
hH