Connection To The Gas System; Electrical Connections - Ferroli MODENA S HE Instructions For Use, Installation And Maintenance

Water treatment
If treatment of the water is necessary, Ferroli recommends the exclusive use of specific products such as Fernox or
Sentinel to be applied in compliance with the producer's instructions. For more information, please contact:
Fernox Manufacturing Co. LTD.
Cookson Electronics, Forsyth Road
Sheerwater, Woking, Surrey, GU21 5RZ
Tel.: 0870 8700362
If the boiler is installed in an existing system, it is necessary to remove any unsuitable additives by thoroughly
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cleaning the system. Cleaning of all the systems must be carried out in compliance with the provisions of
Standard B.S. 7593.
In areas characterised by the presence of hard water, treatment may be necessary to prevent the formation
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of encrustations in the boiler.
Make sure to use the water treatment product in the correct concentration, in compliance with the producer's
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instructions.

2.4 Connection to the gas system

If necessary the local Gas supplier should be consulted, at the installation planning stage, in order to establish the avail-
ability of an adequate supply of gas.
An existing service pipe must not be used without prior consultation with the local Gas supplier.
A gas meter can only be connected by the Local Gas supplier, or by a Local Gas suppliers Contractor.
Installation pipes should be fitted in accordance with BS6891.
Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for LPG.
Do not use pipes of a smaller size than the combination boiler inlet gas connection (22 mm).
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The complete installation must be tested for gas soundness and purged as described in BS689. All pipework
must be adquately supported. An isolating gas valve is provided and should be fitted on the boiler gas inlet.
Please wait 10 minutes when lighting from cold before checking. Gas pressures should be checked after the
boiler has operated for 10 minutes to reach thermal equilibrium. This appliance has no facility to check the
burner pressure, however if the inlet pressure and the gas rate are correct the boiler should be set correctly,
the gas valve is set and sealed at the factory and should not be adjusted without authorisation from Ferroli
Personnel. A combustion test can be carried out to ensure correct air/gas mix (see page 28 combustion an-
alyser testing).
The isolation kit shown in fig. 10 is supplied as standard.

2.5 Electrical connections

The unit must be installed in conformity with current national and local regulations.
Connection to the electrical grid
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The unit's electrical safety is only guaranteed when correctly connected to an efficient earthing system exe-
cuted according to current safety standards. Have the efficiency and suitability of the earthing system checked
by professionally qualified personnel. The manufacturer is not responsible for any damage caused by failure
to earth the system. Also make sure that the electrical system is adequate for the maximum power absorbed
by the unit, as specified on the boiler dataplate.
The boiler is prewired and provided with a cable and plug for connection to the electricity supply. The connections to
the grid must be made with a permanent connection and equipped with a bipolar switch whose contacts have a minimum
opening of at least 3 mm, interposing fuses of max. 3A between the boiler and the line. It is important to respect the
polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green wire) in making connections to the electrical
supply
. During installation or when changing the power cable, the earth wire must be left 2 cm longer than the others.
B
The user must never change the unit's power cable. If the cable gets damaged, switch off the unit and have it
changed solely by professionally qualified personnel. If changing the electric power cable, use solely "HAR
H05 VV-F" 3x0.75 mm2 cable with a maximum outside diameter of 8 mm.
10
Sentinel Performance Solutions Ltd
The Heath Business & Technical Park
Runcorn, Cheshire WA7 4QX
Tel.: 0151 424 5351
cod. 3541C364 - Rev. 00 - 12/2012
MODENA S HE
EN