Jolly Mec J20 Ficha De Montaje, Uso Y Mantenimiento página 60

freshwater (0-12)
water medium (12-20)
hard water (20 - 30)
very hard water (over 30)
Replenishment of the System
The replenishment has to be slowly carried out in
order to let the air bubbles fl ow out through the
right oulets that are placed on the heating system.
In heating systems with a closed circuit the loading
cold pressure of the system and the infl ation
pressure of the expanding vase must correspond.
• in heating systems with open vase, the direct
contact between the circulating liquid and the air is
allowed. During the heating-season the user 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 fi ll up the heating system must
be decontaminate and without air.
The loading valve is required and must be
provided in the hydraulic system, if not already
supplied with the boiler.
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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 fi lling 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 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;
In the remote case the boiler has to be completely
emptied, there is a drainage tap on the right side,
behind the covering.
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.
For the specialist technician:
at the end of the installation,
brief the end user about the
correct use of the boiler.