Adveco AGUADENS 210T, Инструкция по установке, использованию и техническому обслуживанию

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36 60T - 280T
COSMOGAS
the system may be dirty or particularly blocked up, and the
subsequent refilling with new treated water.
If the analysis of a sample of water that will be used to fill the
system shows the following values:
- Hardness from 12 °F to 20 °F
- 7.5 < pH < 9.5
then you can proceed with filling. If the properties are different,
an inhibitor must be used.
10.7.3 Water treatment in domestic heating
systems
The water in domestic heating systems must always be treated
both when the boiler is replaced and when it is a new system.
All the treatment systems and chemical conditioning processes
required must be set up during the planning stage, based on
the characteristics of the unrefined water, in order to obtain
water with the following characteristics:
- Appearance: clear, colourless and with no foam;
- pH: from 7.5 to 9.5;
- Hardness from 12 °F to 20 °F;
- Conditioners: present within the concentrations laid down
by the
supplier.
If the water characteristics are unknown, there is a very high
probability of running into problems such as the following:
a. LIMESCALE
30° fr = 300 mg/kg CaCO
3
For a system that contains 1000 litres of water at 30°f the
content of CaC0
3
is 300 gr, which, if not suitably treated, will
be deposited on the surface of the heat exchanger (as it is
the hottest part of the system). This creates concentrated
increases in temperature and consequently causes the heat
exchanger to break.
b. CORROSION
As a rule corrosion is fostered by the presence of oxygen,
by contact between different metals, or by the presence of
chlorides.
c. DEPOSITS
These are insoluble organic and inorganic substances: DIRT,
RESIDUES FROM WORK.
10.8 - MYDENS boiler heat circuit outlet
In order to avoid constantly refilling with water and the resultant
introduction of oxygen and limescale, it is advisable to limit
as much as possible any work of draining the heating circuit.
10.9 - MYDENS boiler low-temperature
systems (or underfloor heating)
WARNING! If the boiler is installed in an
underfloor system made with plastic piping, all of the
necessary precautions must be taken against corrosion
due to oxygen in the water:
make sure that the system is made with plastic pipes
with oxygen permeability not exceeding 0.1 g/m3 at
40°C. Should the pipe not meet these characteristics, the
radiant panel circuit must be isolated from the boiler, via
a plate heat exchanger suitable for resisting the corrosion
generated by the oxygen dissolved in the water.
10.10 - Manifold sensor
The manifold sensor (detail 26 in figures 3-3, 3-5 and 3-7),
is fitted at the factory onto the boiler manifold. However, this
position may not be correct in certain systems with a hydraulic
separator or a plate heat exchanger (see figures 10-1 and 10-
2). It is therefore recommended that the sensor be removed
from the boiler manifold to the hydraulic separator as shown
in figures 10-1 and 10-2, at detail 58.
WARNING! For correct operation of the system
the manifold sensor must be located at a point on the
hydraulic separator/plate heat exchanger where it can
detect the correct delivery temperature and can be
influenced by the temperature of the secondary circuit
water flow
10 - INSTALLATION - Plumbing connections - MYDENS boiler