6.11 Placing ballast
To keep the mounting system in place, you must put ballast in the ballast containers.
As standard you can use concrete paving stones sized 21x10.5x8 cm as ballast. These weigh approximately 4 kg/unit and
t well into the ballast containers. Alternatively, you can also use agstones of max. 21x21 cm, kerb stones of 20x100 cm or
gravel. If you use gravel, rst place a concrete paving stone left and right in the ballast container. This prevents the gravel
from sliding out of the ballast container.
Carefully comply with the ballast weights from the calculator! NOTE! For ballast congurations, see annex section 7.4.
NOTE! Before placing the ballast, you should check whether the solar panel eld is in the correct position and whether it is
properly aligned with the roof edges. You can now still slightly correct the panel eld. Once the ballast has been installed,
correction is no longer possible!
If your roof is higher than 20 metres, we recommend that you contact your supplier.
They can then determine the correct weight depending on your situation.
15
Rev. 08.08.23 MANUAL FOR FLATFIX FUSION MOUNTING SYSTEM FOR FLAT ROOFS
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