Installation; Installation Standards; Place Of Installation; Installation In Existing Systems - Beretta NOVELLA 55 RAI Installation Manual

3

INSTALLATION

3.1

Installation standards

L'installazione dev'essere eseguita da per-
sonale qualificato in conformità alle seguenti
normative di riferimento:
- UNI-CIG 7129
- UNI-CIG 7131
- CEI 64-8.
Installers must also ensure conformity to fire
prevention standards, gas safety standards
and local bylaws.
3.2

Place of installation

Novella RAI boilers must be installed in boiler
rooms with vents that conform to applicable
technical standards and safety legislation.
a
Boilers must be installed indoors. They
are not designed for outdoor use and
are not fitted with automatic frost protec-
tion devices.
IMPORTANT
Before installing the boiler, thoroughly flush
out all pipes to remove any dirt and deposits
that could compromise the correct functioning
of the boiler. Install a water collector under
the safety valve and connect it to the nearest
drain to evacuate any water coming out of the
safety in the event of overpressure.
The domestic hot water circuit does not requi-
re a safety valve but the installer should never-
theless check that the water supply pressure
does not exceed 6 bar. If necessary, install a
pressure reducer.
Before lighting the burner for the first time,
make sure that the boiler is configured for
use with the type of gas supplied. The type
of gas is specified on the packaging label
and on the boiler's own name plate.
Make sure that the flue is able to withstand
the temperature of the flue gases and that it
has been designed and made in conformity to
applicable standards. The flue must also be as
straight as possible, sealed, insulated and not
blocked or choked.
3.3

Installation in existing systems

Perform the following checks before installing
Novella RAI boilers in existing systems.
- Check that the flue is large enough and
suitable for the characteristics of the boiler.
- Check that the characteristics of any exi-
sting central heating pump are suitable for
the boiler (see the graph on page 11).
- Make sure that the central heating circuit
has been flushed out to remove all sludge
and limescale, and that it has been properly
de-aerated.
- Make sure that the system is fitted with
safety and control devices that conform to
applicable legislation and standards.
- Check the hardness of the water supply
to ascertain whether a softening system is
required. Refer to the following values.
REFERENCE VALUES
pH 6-8
Electrical conductivity less than 200 mV/cm (25°C)
Chlorine ions less than 50 ppm
Sulphuric acid ions less than 50 ppm
Total iron less than 0,3 ppm
Alkalinity M less than 50 ppm
Total hardness 35° F
Sulphur ions none
Ammonia ions none
Silicon ions less than 30 ppm
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