Connecting The External Lpg Valve; Connecting The External Extractor Interlock; Connecting The Plusbus To The Boiler - Viessmann EM-EA1 Extension Installation And Service Instructions Manual

EM-EA1 Extension Installation / Service

Connecting the External LPG Valve:

Connecting the External Extractor Interlock:

Connecting the PlusBus to the Boiler

Legend
A Extension (electronics module)
B PlusBus to boiler
fD
Output 43-L is active as soon as the burner control unit
starts the burner. The external LPG valve opens.
hH
Example: Extractor hood
The floating contact switches from "Ö" to "S" as soon
as the burner control unit starts the burner. The extractor
is switched off.
Note: If making the connection to the boiler with an
external plug for the bus connection, disconnect
plug jF and connect the wires directly.
Boiler installation and service instructions
Connections
13