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

7
Electrical connections
• Click the function module(s) into position in the wall
bracket (fig. 39).
• Remove the drawer.
Fig. 40
Removing the covers
• Remove the covers of both free connectors on the
function module connection cables (fig. 40).
• Slide the drawer back into the boiler.
2
Fig. 41 Interconnecting modules
• Connect the free 120 VAC mains cable (fig. 40)to the
module (fig. 41, [1). If more modules are used, the
120 VAC supply for the second module can be taken
from the first module using the cable enclosed with the
module.
30
6 720 646157-40.1N
1
6 720 646157-41
Logamax plus GB162- 80/100 kW - Subject to modifications resulting from technical improvements!
Fig. 42 Connecting several modules
NOTICE
B The module may have the letters RC or
EMS above the connection (fig. 42, [1]).
• Connect the free connector of the EMS bus
connecting cable (fig. 41)to the first module (fig. 42).
• If more modules are used, the EMS bus connection for
the second module may be branched off from the first
module using the cable enclosed with the module
(fig. 41 & fig. 42).
NOTICE
Pay attention to the polarity when using an
EMS bus connection cable
B Connect the wire from terminal 1 to
terminal 1 and from terminal 2 to
terminal 2 (fig. 41and fig. 42).
7.2.2 Installing function modules outside the
boiler
Fig. 43 EMS bus polarity
• Install the module on the wall according to the
installation instructions of the module.
1
6 720 646157-42.1N
6 720 646157-43.1N