Viessmann EM-EA1 Installation And Service Instructions Manual page 4

Connecting the "external blocking" signal to digital input DI1
jF jF
[{] DI1 DI2 DI3 [{]
1 2 3 4 1 2 3 4 5 6
Connections at plug Z1
[{]
1
? ?
fD
Configuring the function
Configure the settings of the connected
function during commissioning using
the heat generator's commissioning
assistant.
4
[{]
fÖ
?
Function: Floating switching contact,
e.g. at condensate pump. When the
contact is closed, the gas condensing
module and fuel cell module are
blocked. Fault message output hH is
activated.
Connection at terminals 1 and L
Functions:
■ Fault message input 230 V
When the contact is closed, the gas
condensing module and fuel cell
module are blocked. Fault message
output hH is activated.
■ External fault message
Fault message output hH is activa-
ted.
Heat generator installation and
service instructions