3.5
ELECTRICAL WIRING
D4684
Main switch
230V ~ 50Hz
A
3365
TESTING
Check the burner has stopped by opening the thermostats.
Check the burner's lockout during operation by interrupting the flame de-
tector.
CONTROL BOX (see fig.11)
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
Fig. 11
the earth wire (TB);
unscrew the bolt (A) 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.
NOTE: 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 (TL).
E9275
TO BE DONE BY
THE INSTALLER
6
GB
WARNING:
Do not swap neutral and phase
over, follow the diagram shown
carefully and carry out a good
earth connection.
The cross section of the wires must
be at least 1 sq. mm. (Unless re-
quested otherwise by local stand-
ards and legislation).
The electrical wiring carried out by
the installer must comply with the
rules in force in the country.
*
( See
"Hydraulic
page 5). If any of the hydraulic sys-
tems feature the automatic shutoff
device (230V - max. 0.5A), it must
be connected to terminals N - T2 in
the 7-pin plug.
KEY TO LAY-OUT:
C
– Capacitor
E
– Electrode
F
– Flame detector
h1
– Hour counter
(230V ~ - 0.1A max.)
MV – Motor
P
– Bridge socket
RS
– Remote reset
SER – Safety lockout device
S3
– Remote lockout signal
(230V ~ - 0.5A max.)
T6A – Fuse
TB
– Burner earth
TL
– Limit thermostat
TS
– Safety thermostat
V1
– Oil valve
V2
– Safety lockout device
X7
– 7 pin plug
XP7 – 7 pole socket
systems"
on