4 Commissioning [specialist]
12
99609x4x5-mub-en – V05
2017/05
4
Commissioning [specialist]
Observe the following safety instructions regarding the commissioning of the module:
WARNING
Risk of burns and scalding!
The fittings can heat up to more than 100 °C. Therefore, do not clean or fill the
system with the collectors heated (intense sunshine). Please note that hot solar
fluid can leak from the pressure relief valve when the system pressure is too high!
During venting the solar fluid may escape as vapour and cause scalding!
Only flush and fill the system when the collector temperatures are below
70 °C.
NOTICE
Risk of frost!
It often happens that the solar thermal system cannot be completely drained after flushing.
Thus, there is risk of frost damage when flushing with water. Therefore, do only use the solar
fluid used later to flush and fill the solar installation.
Use a water and propylene glycol mixture with max. 50% of propylene glycol as a solar
fluid.
NOTICE
Note regarding the commissioning
Flush and fill in the following order:
1.
Flush the storage tank (to remove scale residues).
2.
Fill the secondary circuit.
3.
Vent the heat exchanger by means of the pressure relief valve.
4.
Flush and fill the solar circuit of the heat exchanger.
5.
Flush and fill the collector field.
6.
Flush and fill the entire solar circuit.
This guarantees that the dirt particles are not flushed into the heat exchanger or the FlowRotor
and that eventually absorbed heat can be dissipated.
