Installing Function Modules Outside The Boiler - Buderus Logamax plus GB162-L.B. 80 kW Installation Instructions Manual

28 | Electrical connections
7.2.2

Installing function modules outside the boiler

▶ Install the module on the wall according to the installation
instructions of the module.
▶ Make an EMS bus connection cable using a 2-core cable and the
connector enclosed with the module ( fig. 46).
Important: Use the connector of the same color as the connections
on the module.
Fig. 46 EMS bus polarity
NOTICE
Pay attention to the polarity when using an EMS bus
connection cable.
▶ Connect the wire from terminal 1 to terminal 1 and
from terminal 2 to terminal 2 ( fig. 44 and fig. 45).
▶ Connect the EMS bus connection cable to the orange RC connection
of the external connection board [1].
1
RC FA WA
Fig. 47 External connection board - Room controller RC and EMS bus
(connection color orange)
▶ To connect other modules, see § 7.2.1.
6720645916 (2014/10)
6 720 646157-43.1N
FW EV DWV
6 720 646157-44.1N
Logamax plus GB162-L.B. 80 kW / 100 kW