Thermics 10 DTH V2, Installation Manual

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Panel maintenance and repair
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Panel maintenance and repair
q. Annual inspection of the panel and solar system
When visually inspecting the collectors, check the following:
- Make sure that the panels are not damaged and that the evacuated tubes are not
defective. The latter can be recognized when the silver coloured coating in the
lower area turns into a whitish patina.
- Check that all the connections are watertight.
- Check that there are no loose fastenings on the collector elements and tube
supports that could cause abnormal movements.
- Check the insulation of the tubes and replace any defective ones if necessary.
- Use a special tester to check the effectiveness of the antifreeze before the onset
of winter.
- Check the system pressure, paying attention to anything that may cause a pressure
drop (system leaks, vessel pre-charge too low, discharge from the safety valve).
- Check the anti-corrosive properties of the antifreeze fluid.
The one supplied has a variable pH from 9.0 to 10.5. Replace it if it is lower than 7.
r. Safety systems
There are several safety systems that should be checked periodically:
- Expansion vessel:
The correct sizing of the expansion vessel allows you to handle expansion caused