10/2007 - Art. Nr. 13 017 700B 13
Start-up
Control unit characteristics
SG 113 - SG 513
GAS control and safety units with non
continuous operation
- SG 113 (one stage),
- SG 513 (two stages),
are appliances of which the programme
is managed by a microcontroller. They
also analyse malfunction, via codified
light signals.
When unit is faulty, the R switch light is
on. Every ten seconds, the trouble code
appears until unit is reset.
Thanks to the non-volatile
microcontroller memory, it can be
consulted later.
The unit stops without a signal, if voltage
is below its minimum value, and restarts
automatically, as soon as voltage is
back to normal.
In continual functioning a thermostatic
cut-out is obligatory after twenty-four
hours.
Unit removal and installation
operations must be performed with
power off. The unit must not be
opened or repaired.
Push on R
during ...
… causes ...
… less than 9
seconds ...
release or
locking of the
control unit.
… between 9
and 13 seconds
...
erasing of the
statistics in the
control unit.
… more than 13
seconds ...
no effect on the
control unit.
Code Type of fault
No flame signal at end of safety time
Parasitic light during preventilation and preignition
Air pressure switch: contact does not close.
Air pressure switch: contact opens during start-up or operation.
Air pressure switch: contact is welded.
Flame disappears during operation.
— Unit was voluntarily stopped.
Code
–
Key
Short light signal
Long light signal
Short pause
Long pause
The information from the MDE system stored in the safety box can be read in plain text via a Cuenoscope or read and
extracted via a computer running the Cuenocom software.
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