4
x
Set-up and installation
4.7 Electrical connection
All ROTEX GCU compact control and safety devices are con-
nected ready for use and tested. Modifications on the electrical
installation are dangerous and prohibited. The operator alone
shall bear responsibility for any resulting damage.
The mains connection, external temperature sensor and other
optional applications (e.g. circulation pump) still have to be con-
nected to the boiler control panel.
4.7.1 Opening the control unit housing and
establishing electric connections
●
Check the supply voltage (
~230 V, 50 Hz
).
●
Switch the mains switch on the boiler control panel of the
ROTEX GCU compact to "OFF".
●
Switch off the circuit breaker in the junction box of the
domestic power supply.
●
Remove the protective cover (see chap. 4.4.3).
●
Remove the locking screw at top right on the boiler switch
panel (fig. 4-27).
●
Remove the cable cover from the back of the controller
housing (fig. 4-28).
●
Turn the controller housing to the horizontal installation
position
●
Guide the cables to the controller housing and remove the
insulation accordingly fig. 4-30.
WARNING!
Touching live parts can result in an
electric shock
and lead to
potentially fatal injuries and burns.
●
Before beginning work on live parts,
disconnect all of the
systems circuits from the power supply
(switch off
external main switch, disconnect fuse) and secure against
unintentional restart.
●
Establishment of the electrical connection and work on
electrical components should only be performed by
electrical technicians
in compliance with valid standards
and guidelines as well as the specifications of the energy
supply company and the instructions in this manual.
●
Never make constructional changes to connectors or other
electrical equipment components.
●
The
equipment covers and maintenance opening covers
must be
re-fitted
immediately after completion of the work.
Fig. 4-27 Removing the locking
screw.
Fig. 4-28 Removing the cable
cover
The controller housing of the GCU compact is designed
so that it can be folded forwards for maintenance work.
●
When cutting to length and laying the cables to be
connected, make sure that the tilt movement is tension-free.
Fig. 4-29 Turning the controller housing to the horizontal installation po-
sition
Summary of Contents for GCU compact 315
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