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Water Characteristics
The characteristics of the water used to fill the system are
very important to prevent the build-up of mineral salts and
the formation of incrustations along the pipes, in the boiler
and in the heat exchangers.
Therefore, please get your plumber's advice concering:
• Hardness of water circulating in the system, to prevent
problems of incrustation and limescale, especially in the
domestic water heat exchanger (>25° French).
• Installation of a water softener (if water hardness > 25°
French).
• Filling the system with treated water (demineralised).
If you have very extensive system, with a large amount of
water, or which require frequent refilling, it is recommended
the installation of water softening system. It 'should
be noted that the encrustations drastically reduce
performance because of their low thermal conductivity.
To guarantee the results of the certifications (see technical table) it is necessary to have the same laboratory conditions
and to install the same parameters of the performance tests.
Only authorized technicians have these parameters and they will be able to install only after having verified that the
conditions of draft of the flue and of the combustion oxygen are the same of those of the tests.
freshwater
(0-12)
water medium
(12-20)
hard water
(20 - 30)
very hard water
(over 30)
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