Instructions for use and maintenance
11
2.3 Electrical connection
Connection to the electrical power supply must be carried out according to the applicable rules. Before
making the electrical connection make sure that the voltage and frequency shown on the technical data
plate are the same as those of the power supply. The power lead must be flexible, with characteristics of
no less than the type with H07RN-F polychloroprene rubber insulation. The lead should be connected to
the terminal block according to the wiring diagram enclosed with the appliance, and then secured with a
cable clamp.
The wiring pattern is as follows:
Yellow/green wire
earth
Blue wire
neutral N
Brown wire
live L
If the appliance is to be permanently connected to the mains power supply, an omnipolar safety switch of
suitable capacity with a contact separation of at least 3 mm must be fitted upstream of it.
Make sure that the power lead does not come into contact with hot or sharp parts.
If the plug continues to spark during ignition, and the burnes becomes blocked, swap the live wire with the
neutral.
It is essential for the appliance to be properly earthed and included in an equipotential system; this
connection is carried out with the stop screw marked by the
symbol to be found behind the appliance. The equipotential wire must have a diameter of at least 10
mm
2
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CAP.3 - COMMISSIONING (for the installator)
3.1 Checking the nominal thermal capacity
The nominal thermal capacity must be checked by the authorised engineer or by the competent Agency,
according to the information contained in this user manual. This check must be made for new installations
or for conversions to other types of gas and after all extraordinary maintenance.
There is no way of setting the nominal thermal capacity other than measuring the correct supply pressure
and checking that the injectors used are the correct ones. The sealed (for example with paint) components
must never be disturbed. Checking the nominal thermal capacity is carried out using a counter and a
chronometer. The exact volume of gas that must pass for each unit of time can be seen in the technical
data table. This value must be kept within the prescribed range, with a tolerance of ± 5%.
If any deviation is found a check should be made that the correct size injectors have been fitted.
