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7
Electrical system
Notes on safety for the electrical wiring
The electrical wiring must be carried out with the electrical supply disconnected.
The electrical wiring must be carried out in conformity with the regulations in force in the countries of destination,
and by qualified personnel. Refer to the wiring diagrams.
The manufacturer declines all responsibility for modifications or connections different from those shown in the wir-
DANGER
ing diagrams.
Do not invert the neutral with the phase in the electrical supply line.
Check that the electrical supply of the burner corresponds to that shown on the identification label and in this man-
ual.
The burners have been calibrated for intermittent operation. This means that they must stop once every twenty
four hours to permit the control box to check its efficiency at start up. Normally the boiler's thermostat/pressure
switch ensures the stopping of the burner.
If this is not the case, a timer should be fitted in series to L-N to stop the burner at least once every 24 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 power absorption of the device, as indicated on the label
and in the manual, checking in particular that the section of the cables is suitable for that level of power absorp-
tion.
For the main power supply of the device from the electricity mains:
- do not use adapters, multiple sockets or extensions;
- provide for an omnipolar switch, as required by current safety regulations.
Do not touch the device with wet or damp body parts and/or in bare feet.
Do not pull the electric cables.
Before carrying out any maintenance, cleaning or checking oper-
ations:
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Turn off the fuel interception tap.
Avoid condensate, ice and water leaks from form-
ing.
DANGER
2902843
Electrical system
18
GB
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