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must regularly check the circulating water level in
the expansion vase.The content of water in the
system of recirculation must be stable hold.
Experiences show that the user must regularly
check the water level every 14 days in order to
maintain a stable water content.
The replenishment process must be carried out in
case of necessity of more water when the boiler
has cooled down. These preventive measures aim
to prevent the insurgence of thermic stress of the
steel body of the boiler.
• in systems with open vase, the pressure of water
in boiler, when the system is cold, mustn't be lower
than 0,3 bar;
• the water used to fill up the heating system must
be decontaminate and without air.
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 boiler
and the system;
• Gradually open the filling tap of the system
checking that the automatic vent's valves, placed
on the system, are regularly working;
• Close the vent's valves of the radiators as soon as
the air flows 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 filling tap of the system and then let
the air flow out again through the vent's valve of
the radiator;
You must not mix water of the
heating system with antifreeze
or anticorrosion substances in
wrong concentrations. This could
ruin the seals and provoke the insurgence
of noises while operating. The producer
refuses any responsibility for damages
towards persons, animals or things if
this warning will not be respected.
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