3066
8
GB
3.6 ELECTRICAL WIRING
A
E9275
TO BE DONE BY
THE INSTALLER
CA
RRI
E
D
-O
U
T
IN TH
E
FA
CT
OR
Y
CONTROL BOX
MO5
5
0
D4685
Main switch
230V ~ 50Hz
ATTENTION:
³
Do not swap neutral and phase
over, follow the diagram shown
carefully and carry out a good
earth connection.
³
The section of the conductors must
be at least 1mm².
(Unless requested
otherwise by local standards and
legislation).
³
The electrical wiring carried out by
the installer must be in compliance
with the rules in force in the country.
*
(See “Hydraulic systems” on
page 7).
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.
CONTROL BOX,
(see fig. 12)
To remove the control box from the burner it is necessary to:
³
Disconnect all the connectors, the 7-pin plug, the high voltage cables and
the earth wire (
TB
);
³
Unscrew the bolt (
A
) and pull the control box in the direction of the arrow.
To install the control box it is necessary to:
³
Screw the bolt (
A
) in at a torque of 1 - 1.2 Nm;
³
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 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
).
TESTING
³
Check the burner has stopped by opening the thermostats.
³
Make sure the operating burner locks out by covering the flame detector.
Fig. 12
KEY TO LAYOUT:
B5
– 2nd stage working si-
gnal
(230V
~
- 0.1A max.)
C
– Capacitor
E
– Electrode
F
– Flame detector
h..
– Hours counter
(230V
~
- 0.1A max.)
MV
– Motor
P
– Bridge socket
RS
– Remote reset
S3
– Remote lockout signal
(230V
~
- 0.5A max.)
SER
– Safety lockout device
T6A
– Fuse
TB
– Burner earth
TL
– Limit thermostat
TR
– Adjustment thermostat
TS
– Safety thermostat
V1
– Oil valve 1
st
stage
V2
– Oil valve 2
nd
stage
X..
– Plug
XP..
– Socket
