IBC TopFix 200 Installation Manual page 35

4.7 Assembly with solar fasteners on a steel substructure
Solar fasteners are intended for attachment to metal purlin or rafter structures with roofing
made of trapezoidal profiles and sandwich profiles. In this process, the outer shell is made
either of steel or aluminium.
Just as with hanger bolts, solar fasteners are inserted through the roofing and fastened to the
substructure.
Comply with the valid, generally applicable building surveillance certificate Z-14.4-638 and the
regulations contained therein for the use on trapezoidal sheet metal and sandwich roofs.
Figure 52: Solar fastener
Proceed as follows during mounting:

Do not drill into the water bearing depressions, but into the protruding parts.

Determine the rafter/purlin position (potentially mark using a piece of string).

Drill 11 mm bores into the outer roofing (sheet metal).

Depending on the thickness of the steel, drill into the metal substructure accordingly to fasten the
solar fasteners. For this purpose, take into account the data illustrated in Figure 53 below.
Pre-drilling diameter [mm]
Figure 53: Steel substructure pre-drilling diameter

Screw the solar fastener into the steel substructure to safeguard it demonstrates secure static
properties.

Tighten the lower nut on the machine thread to press the rubber seal against the outer roofing, thus
sealing the hole.

Carefully press down the seal. Risk of cracks and deformation!

For stress reasons, the universal connector must always be mounted in the direction of the roof
ridge.

Adapt the required length of the solar fastener to the height of the roof structure. Use IBC SOLAR
AG's very own "PV Manager" planning software to ensure you select the right solar fastener.
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Version 17.01, as of: 27-Jun-2017
Thickness of the steel substructure [mm]
1.5 < 5.0 5.0 < 8.0
6.8
8.0 < 10
7 7.2
> 10
7.4