Commissioning [Installer] - Hamworthy Trigon ST1 Installation, Commissioning, Operation & Service Instructions

4 Commissioning [installer]

4 Commissioning [installer]
Observe the following safety instructions regarding the commissioning of the station:
WARNING
Risk of burning 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 valves in case of too high system pressure!
During venting the solar fluid may escape as vapour and cause scalding!
 Only flush and fill the installation when the collector temperatures are
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. 40% of propylene glycol as a solar
fluid.
NOTICE
Note regarding the commissioning sequence
When putting the system into operation, first fill the heating circuit and then the solar circuit.
This guarantees that heat that may possibly be absorbed by the collectors during
commissioning can be dissipated.
NOTICE
Note regarding the expansion vessel
To prevent that the dirt particles in the solar thermal system are flushed into the expansion
vessel, some manufacturers recommend to disconnect the expansion vessel from the solar
circuit before flushing and filling. Please observe the instructions of the manufacturer.
0DNO0201
below 70 °C when wearing appropriate personal and protective equipment.
Installation-Operation ST1 Solar Pump Station 11