Antifreeze
Condensed heat transfer fluid for water heating solar systems used also for food processing.It is a non-toxic, antifreeze, almost odourless fluid, based on a substance called propylene glycol (PG).
The anticorrosive materials that contained in the antifreeze can reliably protect metals used normally in solar collectors from corrosion and wear.
In addition, it should be diluted by at least 25% ν/ν and not more than 75% n/n water when used in heating or cooling circuit. Drinking water is to be used (100mg/kg ΟΓ max.) or deionized water with neutral pH.
It is used in accordance with No. 1272/2008 (EC) Regulation [CLP] and Directive 67/548/EEC, 1999/45/EU.
WARNING: It is recommended to add antifreeze fluid with anticorrosion protection each year given that, if the circuit is not full we have decreased efficiency and wear due to the contact of metals with air and salts created over time.



