Electrical Wiring - Riello GS20 Installation, Use And Maintenance Instructions

3.4 ELECTRICAL WIRING

Ionization probe
Electrode
Air pressure
KEY TO LAY-OUT
PG – Minimum gas pressure switch
S3 – Remote lock-out signal
(220V - 0.5 A max.)
T6A – Fuse
TL – Limit thermostat
TS – Safety thermostat
V10 – Safety valve
V11 – Adjustment valve
CARRIED-OUT
IN THE FACTORY
TO BE DONE BY
THE INSTALLER
ATTENTION
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.
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.
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.
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 series to limit thermostat (TL).
2754
Ignition transformer
switch
White
Blue
Motor
Brown
Black
Capacitor
Terminal board
220V
Connector
Control box
RMG 88.620A2
~
60Hz
FOR GAS LEAK CONTROL DEVICE
5 GB
Burner
earth
VERSION
(DUNGS VPS 504)
D4352