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4. ELECTRICAL SYSTEM
4.1 ELECTRICAL SYSTEM FACTORY-SET
4.2 ELECTRICAL CONNECTION TO THE TERMINAL STRIP
(installer-set)
KEY TO LAYOUT
MB - Burner terminal strip
- Remote lock-out signal
S
TB - Burner ground (earth) connection
TL - Limit control device system
TS - Safety control device system
S8981
S8982
NOTE
-
Do not exchange the neutral wire with the phase (avoid the
plung-pin connection).
-
Carry out a safe earth connection.
-
Cable section not indicated: 1 mm
-
All the electrical wires, which are to be connected to the termi-
nal block shall pass through the fair leads 7 (Fig. 1) to guaran-
tee the electrical protection IP 40.
-
Verify the burner stop by opening the boiler thermostat and
the burner lock-out by darkening the photoresistance.
-
The burner has been type approved for intermittent operation.
This means it should compulsorily be stopped at least once
every 24 hours to enable the control box to perform checks of
its own efficiency at start-up.
Burner halts are normally provided for automatically by the
boiler load control system.
If this is not the case, a time switch should be fitted in series
to TL to provide for burner shut-down at least once every 24
hours.
5
KEY TO LAYOUT
- Capacitor
C
FR - Photoresistance
MB - Burner terminal strip
MV - Motor
TA - Ignition transformer
TB - Burner ground (earth)
connection
V1 - 1st stage solenoid
valve
V2 - 2nd stage solenoid
valve
(A)
2
.
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