20154169
20
GB
Installation
4.10 Electrical wiring
Notes on safety for the electrical wiring
Before carrying out any maintenance, cleaning or checking opera-
tions:
If the cover is still present, remove it and proceed with the electrical
wiring.
By way of example we indicate the following mode (according to
UL795
):
4.10.1 Notes on terminals
On the electrical panel there terminals with a “spring” system. The
opening of these terminals must be made via a suitable tool, using
a flat-blade screwdriver of the correct size.
The clamp uses a pressurised opening system.
Clamp opening
insert the correct screwdriver into the opening, pushing down
until the hole for the cable is completely open.
Insert the previously stripped cable and remove the screw-
driver. Make sure the cable is securely fastened Fig. 18.
DANGER
The electrical wiring must be carried out with the electrical supply disconnected.
Electrical wiring must be made in accordance with the regulations currently in force in the country 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 wiring
diagrams.
Check that the electrical supply of the burner corresponds to that shown on the identification label and in this manual.
Burners have been type-approved for continuous operation (FS2). Burner FS1 operation has also been approved
only with the use of the UV flame sensor kit.
The RFGO safety device features two built-in flame amplifiers which allow using it for applications with UV sensor
only, FR sensor only or with both sensors (UV+FR). The FR amplifier circuit is subject to constant auto-control, which
allows to use it for applications requiring a burner operating cycle longer than 24 hours. When it is used as a UV
control, the system is considered as non-permanent, requiring one burner recycle every 24 hours.
Normally, burner stopping is guaranteed by the boiler's thermostat/pressure switch.
If this is not the case, you must apply a time switch to L-N in series, 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. Do not use the gas tubes as an earthing system for
electrical devices.
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, in compliance with 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
Turn off the fuel interception tap.
DANGER
Avoid condensate, ice and water leaks from form-
ing.
20114253
Fig. 18
Содержание RS 28/M
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