eta BG 1, Руководство по эксплуатации

Страница: 15 / 28

Electrical connections
15
5 Electrical connections
Circuit diagram in the appendix
The circuit diagramm is in the appendix, see
chapter
9 "Circuit diagram" .
Assembly and installation only by qualified
specialist personnel
The assembly and installation may be performed
by specialist personnel with the corresponding
qualifications only.
WARNING!
Switch off the electricity to the boiler via the mains
switch
 Switch off the electricity to the boiler via the mains
switch. This prevents injuries caused by switching
the boiler on inadvertently.
DANGER!
Electric shock
There are live parts on the circuit boards. If
touched, they can cause injury and
property damage.
 Before beginning any work, isolate the system
completely from all power sources, ensure that it
cannot be switched back on, and verify that it is
safely isolated from supply.
CAUTION!
Flexible stranded conductors
If flexible stranded conductors are not used for the
wiring, the contacts in the plug connections will be
subjected to excessive mechanical strain. In this case,
the warranty for the electronics would become null and
void.
 Only flexible stranded conductors may be used for
the wiring.
Safety devices
Observe the necessary safety devices for the heating
system. Further information about this can be found in
the boiler's installation instructions.
Establishing a CAN bus connection
Establish the CAN-bus connection between the boiler
circuit boards and the optional wall mounted boxes.
For details, see document "CAN-Bus Connetions
- Installation" (93969)