Kalor Francesca 17B User Manual page 14

The loading valve is required and must be
provided in the hydraulic system.
This operation must be carried out with caution
following these steps:
• open the vent's valve of the radiator ,of the
thermostove and the system;
• Gradually open the fi lling tap of the system
checking that the automatic vent's valves, placed
on the system, are regularly working;
Water Characteristics
The characteristics of the water used to fi ll the
system are very important to prevent the build-up
of mineral salts and the formation of incrustations
along the pipes, in the thermostove 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
(>15° French).
• Installation of a water softener (if water hardness
> 15° French).
• Filling the system
(demineralised).
If you have very extensive system, with a large
amount of water, or which require frequent
refi lling, 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.
Pellet
The pellets are cylinders of compressed wood, produced from sawdust and wood
processing (chips and sawdust), generally produced by sawmills and carpenters. The
binding capacity of the lignin contained in wood, allows to obtain a compact product
without adding additives and foreign chemicals to the wood, is therefore
obtained a natural fuel with high yield.
The use of expired pellets or any other unsuitable material can damage
parts of the thermostove and impair proper operation: this can lead
to the termination of the guarantee, and its producer responsibility.
For our products use pellets diameter 6 mm, length 30 mm and a maximum of 8%
A1 certifi ed according to the UNI EN ISO 17225-2 standard. Keep the pellets away from heat
sources and not in humid environments or with explosive atmosphere.
12
with treated water
• Close the vent's valves of the radiators as soon as
the air fl ows out;
• check through the pressure gauge placed in the
system that the pressure is reaching 1 bar (this is
required only for systems with closed vase, you
have to look for local rules that allow it); whereas
for systems with open vase the restoration will be
automatic;
• Close the fi lling tap of the system and then let
the air fl ow out again through the vent's valve of
the radiator;
freshwater (0-12)
water medium (12-20)
hard water (20 - 30)
very hard water (over 30)
and