What are the different pressure limits for a DualSun installation?

The inflation pressure of the expansion tank (which is not always mandatory :

Is it necessary to have an expansion tank with a DualSun SPRING installation? ) and the maximum pressure of the solar circuit at panel-level are given in the following table:


Heigth between the panels and the solar station [m] 0 2 4 6 8 10 12 14
Service pressure [bar] 1,5 1,7 1,9 2,1 2,3 2,5 2,7 2,9


This tab follow the rule Pmax =1,5 + H/10


 These pressures must not be exceeded in order for the warranty to remain valid.


>To go further : I’ve noticed a pressure variation on my DualSun Spring installation, should I be worried?





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