20035606
24
GB
Installation
4.14 Electrical wiring
4.14.1 Notes on safety for the electrical wiring
Before carrying out any maintenance, cleaning or checking opera-
tions:
If the hood is still present, remove it and proceed with the elec-
trical wiring according to the layouts shown in Appendix.
All the cables to be connected to the burner are fed through the
grommets. See Fig. 23.
The use of the cable grommets can take various forms. By way
of example we indicate the following mode:
1
Three phase power supply
2
Fan motor
3
Triggering / Safety device
4
Available
5
Single phase power supply
DANGER
The electrical wiring must be carried out with the electrical supply disconnected.
Electrical wiring must be carried out by qualified personnel and in compliance with the regulations currently in force in
the country of destination. Refer to the wiring diagrams.
The manufacturer declines all responsibility for modifications or connections different from those shown in the wiring
diagrams.
Do not invert the neutral with the phase in the electrical supply line. Any inversion would cause a lockout due to firing
failure.
Check that the electrical supply of the burner corresponds to that shown on the identification label and in this manual.
The burners have been set for intermittent operation. This means they should compulsorily be stopped at least once
every 24 hours to enable the control box to perform checks of its own start-up efficiency. Normally the boiler's thermo-
stat/pressure switch ensures the stopping of the burner.
If this is not the case, it is necessary to apply in series with IN a timer switch that turns off the burner at least once
every twenty-four hours. Refer to the wiring diagrams.
The electrical safety of the device is obtained only when it is correctly connected to an efficient earthing system,
made according to current standards. It is necessary to check this fundamental safety requirement. In the event of
doubt, have the electrical system checked by qualified personnel.
The electrical system must be suitable for the maximum input power of the device, as indicated on the label and in the
manual, checking in particular that the section of the cables is suitable for the input power of the device.
For the main power supply of the device from the electricity mains:
- do not use adapters, multiple sockets or extensions;
- use an omnipolar switch, as indicated by the current safety standards.
Do not touch the device with wet or damp body parts and/or in bare feet.
Do not pull the electric cables.
DANGER
disconnect the electrical supply from the burner by
means of the main system switch;
DANGER
isolate the fuel supply.
1
2
3
5
3
3
3
3
4
Fig. 23
S8318
Summary of Contents for RL 300
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