HelioSphera HS Atlas Series, Safety And Installation Instructions Manual

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10-SSI-001_rev.005_ENG
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5.1.3 HS Glass-Glass Series
The HS Glass-Glass modules are HelioSphera modules without any aluminum structure
attached, Fig. 13.
Front view Rear view
Fig. 13 HS Glass-Glass
PV modules are exposed to a wide range of mechanical conditions, so that surface stress
may appear. Due to the different thermal coefficient of glass and metal structures, thermal
stress can occur as a result of the module’s outdoor exposure. DIN 1055 sets basics for the
planning of a structural framework regarding building structures which must be taken into
account. During mounting the following recommendations should be followed:
1. It is strongly recommended to install HS modules in vertical (portrait) position. For
more info see next point “6.- Electrical installation”
2. Modules must be set up on the lower edge (dimension 1100 mm.) and fastened
linearly at both long sides in accordance with the support structure. A horizontal middle
support is placed to enable the center fastening and to prevent non-admissible
bending of the module. The horizontally positioned clamps guarantee that the module
resists high wind suction loads (Fig. 15).
3. The mounting assembly and the undercarriage must be appropriately dimensioned
and adapted to the in-site environmental conditions so that the maximum
bending/deformation admitted have not to exceed a specific value related to the edge
length of the module (1300 mm, respectively 1100 mm). This value is: L/100, so the