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3.4
ELECTRICAL WIRING
3.4.1 STANDARD ELECTRICAL WIRING
KEY TO LAY OUT
B4
– Working signal
C
– Capacitor
CN1 – Connector SO
E
– Electrode
F1
– Suppressor
h1
– Hour counter
MV – Motor
PA – Air pressure switch
PG – Minimum gas pressure switch
RL – Relay
SO – Ionization probe
S3
– Remote lock-out signal (230V
- 0,5 A max.)
TA – Ignition transformer
TB – Burner earth
TL
– Limit thermostat
TS
– Safety thermostat
T6A – Fuse
V10 – Safety valve
V11 – Adjustment valve
XP.. – Socket
X9* – 9-pin plug for continuous ven-
tilation
X..
– Pin plug
ATTENTION:
Do not swap neutral and phase over, follow the diagram shown carefully and carry out a good earth connection.
The section of the conductors must be at least 1mm². (Unless requested otherwise by local standards and legislation).
The electrical wiring carried out by the installer must be in compliance with the rules in force in the country.
Verify that the burner stops by operating the boiler control thermostats and that the burner locks out by separating
the red ionisation probe lead connector.
In the case of phase-phase feed, a bridge must be fitted on the control box terminal board between terminal 6 and the
earth terminal.
NOTES
The burners have been type-approved for intermittent operation. This means they must stop at least once every 24 hours in
order to allow the electrical control box to check its efficiency on start-up. The boiler limit thermostat (TL) normally ensures
the burner halts. If this does not happen a time switch halting the burner at least once every 24 hours must be applied in se-
ries to limit thermostat (TL).
3216
D7273
5
GB
~
230V
50Hz
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