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Water quality requirements on the circuit
Water quality must meet the standards of European Directive 98/83 EC and the criteria
set out in UNE 112.076. Water quality should be analysed before use; to evaluate criteria
such as concentration, pH value, conductivity, chloride ion concentration (Cl-), sulfide ion
concentration (S2-), etc. Some of the parameters on the chemical ingredients are
indicated in the following table:
Parameter
Acrylamide
Antimony
Arsenic
Benzene
Benzopirene
Boron
Bromate
Cadmium
Chrome
Copper
Cyanide
1.2-dichloroethane
Epiclorohydrin
• PH value: between 6.5 and 8.5
• Water hardness: <50ppm.
Before connecting the outdoor unit:
In any installation, both new and existing, a thorough cleaning of the pipes must be
carried out using a suitable chemical cleaning product,and then wash the pipes to clean
said chemical agent. To avoid damage to the pipes, you must add anionic, cationic
corrosion inhibitors, a mixture of both or film products that block the existing microlays,
avoiding corrosion reactions and oxygen detachment. When using inhibitors or other
cleaning chemicals, always read the manufacturer's instructions and their compatibility
with the materials that make up the installation.
Antifreeze
In case the installation is to operate in refrigeration mode, it is mandatory to use anti-
freezing. In installations that do not operate in refrigeration mode, antifreeze must be
used when there is a risk of freezing during a period of non-operation or due to
environmental conditions. Antifreeze solutions must use propylene glycol with a Class 1
toxicity index. Ethylene glycol must never be used in the primary circuit.
Problems arising from poor water quality or not having treated water as described
herein are not covered by the product warranty.
Value
Parameter
0.10 μgil
Fluoride
5.0gll
Lead
10gll
Mercury
1.0gll
Nickel
0.010gll
Nitrate
1.0 mgll
Nitrite
10gll
Pesticides
5.0gll
Pesticides - total
50gll
Polycyclic aromatic hydrocarbons
2.0 mgll
Selenium
50gll
Tetrachloroethylene and
Trichloroethylene
3.0gll
Trihalomethane - Total
0.10 μgil
Vinyl chloride
Value
1.5 mgll
10gll
1.0gll
20gll
50 mgll
0.50 mgll
0.10gll
0.50gll
0.10gll
10gll
10gll
100gll
0.50gll
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