29
20140894
GB
Electrical system
6.2.4
PRESS 1G - 2G - 3G electrical connection of burner (three-phase model)
(by installer)
Key (Fig. 25):
IN -
Manual burner stop switch
MB- Burner terminal strip
PS- Lock-out reset button
S -
Remote lock-out signal
TB- Burner ground (earth) connection
TL-
Limit control device system:
This shuts down the burner when the boiler temperature or
pressure exceeds the setpoint value.
TR- High-low mode control device system:
This controls operating stages 1 and 2 and is necessary
only for two-stage operation.
TS- Safety control device system:
This operates when TL is faulty.
NOTE:
the burner is delivered preset for single-stage operation
with a jumper inserted in the terminal strip, see (Fig. 27). If
two-stage operation is required, remove the jumper be-
tween terminals 10-11 and insert the control device TR in its
place to command the 2nd gas oil solenoid valve
Fuse and cable sections: (cable section not indicated: 1,5 mm
2
)
Fig. 26
20141016
WARNING
–
Do not invert the neutral with the phase wire in
the electricity supply line. Any inversion would
cause a lockout due to firing failure.
–
Only use original spare parts to replace the
components.
PRESS
GW
1G
2G
3G
V
200
200
200
230
F
A
T5
T6
T6
T10
S
mm
2
1,5
1,5
1,5
1,5
Fig. 27
D346
Summary of Contents for PRESS 1G
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