Riello Gulliver BS2D TL Installation, Use And Maintenance Instructions page 60

3.7 ELECTRICAL WIRING
Main switch
230V ~ 50Hz
Fig. 8
A
E9250
3115
KEY TO LAY-OUT
B5
C
CN1 – Ionisation probe
E
h..
MV – Motor
PA – Min. air pressure switch
PG – Min. gas pressure svitch
RS – Remote reset
SM – Servomotor air damper
SO – Ionisation probe
ATTENTION:

Do not swap neutral and phase over, follow the diagram shown care-
fully 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
Connect the 2nd stage thermostat (TR) to terminals T6 - T8 and remove
the bridge.
TESTING
Check the burner has stopped by opening the thermostats.

Check that the burner is blocked by opening the connector (CN1) inserted

in the probe red wire and located outside the control box.
CONTROL BOX, (see fig. 8)
To remove the control box from the burner it is necessary to:
disconnect all the connectors, the 7-pin plug, the high voltage cables and the

earth wire (TB);
unscrew the bolt (A, fig. 8) and pull the control box in the direction of the arrow.

To install the control box it is necessary to:
screw the bolt (A) in at a torque of 1 - 1.2 Nm;

reconnect all the connectors previously disconnected.

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 en-
sures the burner halts. If this does not happen a time switch halting the burner at
least once every 24 hours must be applied in series to limit thermostat (TL).
8
– 2 nd stage working signal
– Capacitor
connector
– Electrode
– Hour counter
Brown
Blue
Black
GB
– Lock-out signal
S3
(230V - 0.5A max.)
T6A – Fuse
TB – Burner-earth
– Limit thermostat
TL
TR – Adjustment thermostat
– Safety thermostat
TS
V10 – Safety valve
st
V11 – 1 valve
nd
V12 – 2 valve
– plug
X..
XP.. – socket
D4627
CARRIED-OUT
IN THE FACTORY
TO BE DONE BY
THE INSTALLER