6 Commissioning [specialist]
2016/05
996098460-mub-en – V02
23
6
Commissioning [specialist]
Please observe the following safety instructions regarding the commissioning of the station:
WARNING
Risk of burns and scalding!
The fittings can heat up to more than 100 °C. Therefore, it is not allowed to flush
or fill the system if the collectors are hot (intense solar radiation). Please note that
hot solar fluid can leak from the pressure relief valve if the system pressure is too
high! During venting, solar fluid may escape as vapour and cause scalding!
Flush and fill the installation only if the collector temperatures are
below 70 °C.
NOTICE
Risk of frost!
It is often not possible to completely drain solar installations after flushing. Thus, there is a risk
of frost damage when flushing with water. Therefore, flush and fill the solar installation only with
the solar fluid used later.
Use a water and propylene glycol mixture with maximum 50% of propylene glycol as
solar fluid.
NOTICE
Note regarding the commissioning sequence
Flush and fill the installation in the following order:
1.
Flush the storage tank (to remove scale residues).
2.
Fill the secondary circuit / storage tank circuit.
3.
Vent the heat exchangers with the help of the pressure relief valves.
4.
Flush and fill the heat exchangers in the solar circuit.
5.
Flush and fill the collector field.
6.
Flush and fill the (entire) solar circuit.
This avoids that dirt particles are washed into the heat exchanger or the
FlowRotor and guarantees that possibly absorbed heat can be dissipated.
