Water Treatment Plant Filling - Immergas Victrix Tera V228 EU Manual

1.24 WATER TREATMENT PLANT FILLING

As already mentioned in the previous paragraphs, a treatment of the thermal and domestic system water is required, in compliance with
the local standards in force.
The parameters that influence the duration and proper operation of the heat exchanger are the water's PH, total hardness, conductivity,
and oxygen, together with the system's processing residues (any welding residues), any oil present and corrosion products that can, in
turn, cause damage to the heat exchanger.
In order to prevent this from happening, you are recommended to:
- clean the system with clean water to eliminate solid residues before installation on new and old systems;
- clean the system with a chemical treatment:
• clean the new system with a suitable cleaning device (for example Sentinel X300, Fernox Cleaner F3 or Jenaqua 300) combined with
thorough washing;
• clean the old system with a suitable cleaning device (for example Sentinel X400 or X800, Fernox Cleaner F3 or Jenaqua 400) com-
bined with thorough washing;
- Check the maximum total hardness and amount of filling water with reference to the graph (Fig. 33), if the contents and hardness of
the water are below the indicated curve, no specific treatment is required; otherwise, to limit the content of calcium carbonate, you
must provide for water-filling treatment.
- If it is necessary to provide for water treatment, it should be done through complete desalination of the filling water. As opposed to the
complete softening process, desalinating the water completely not only removes hardening agents (Ca, Mg), but also eliminates all
other minerals to reduce water-filling conductivity up to 10 microsiemens/cm. Given its low conductivity, desalinated water does not
only prevent the formation of lime scale, but also serves as protection against corrosion.
- Insert a suitable inhibitor / passivator (for example Sentinel X100, Fernox Protector F1, or Jenaqua 100); if required, also insert appro-
priate antifreeze (such as for example Sentinel X500, Fernox Alphi 11 or Jenaqua 500).
- Check electrical conduction of the water, which should be higher than 2000 µs/cm in the case of treated water and lower than 600 µs/
cm in the case of non-treated water.
- To prevent corrosion, the water system's PH should be between 7.5 and 9.5.
- Check the maximum content of chlorides, which should be less than 250 mg/l.
For quantities and methods of use of water-treatment products, refer to the instructions provided by their manufacturer.
Y
The graph refers to the entire life cycle of the system. Therefore, also consider scheduled and unscheduled maintenance, which
involves emptying and filling the said system.
42
X
Key (Fig. 33):
X - Total water hardness °F
Y - Litres of system water
33