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The static calculation of the mounting system is based on the symmetrical placement of the modules on the
mounting rails at the longitudinal side of the modules for even load transfer into the substructure.
The results calculated with the design software, such as distances of the fasteners (e.g. roof hooks, hanger
bolts, saddle clamps etc.), rail lengths and number of fasteners (e.g. direct attachment on the trapezoidal
metal), overhang (e.g. rail and roof hook protrusions) and the other calculation notes must be considered
and complied with.
novotegra has been tested and certified by TÜV Rheinland:
2 Maintenance of the mounting system
The mounting system must be checked for stability and operation at regular intervals during the system
maintenance.
In addition to the visual inspection of the components and the roof cover for damage we recommend a
random inspection of the connections.
Removal is possible in reverse order in the work steps mentioned below.
The maintenance work must be carried out by a specialist company with proven experience in electrical
systems and work on mounting systems.
3 novotegra for tile roofs II
The contents of this installation manual describe the installation of the substructure on roofs with sheet or
bitumen waterproofing.
Depending on the roof seal material, separation and/or protection membranes may need to be added
between the roof seal and the substructure. This must be agreed upon directly between the company
installing the PV system, the building owner and the specialist roof sealing company.
The substructure is installed without penetrating the roof. The PV system is secured against wind suction
by providing ballast (e.g. suitable stones), based on the results of the wind tunnel tests for the system. The
required ballast is determined by BayWa r.e. Solar Energy Systems GmbH based on the project data
provided by the installation company. The ballast applies to the planned system; on-site deviations from
planning may lead to different results.
Protection against system sliding is verified based on a coefficient of friction of
checked by the installation company prior to installation. If the coefficient of friction is determined by the
installation company in advance, protection can be verified during planning using the determined value.
The system must be secured on site to prevent it from "creeping" due to expansion caused by temperature.
This can be achieved by installing suitable stop points on the roof surface or by anchoring to the parapet,
for example. The connection points on the building and building parts must be able to bear the forces
exerted.
General conditions to be observed in accordance with the wind tunnel test results:
Roof incline 0 – 5 degrees
-
-
Flat roofs with and without parapet
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Distance from system to roof edge (without parapet) = 0.50 m
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Distance from system to parapet (inside edge) = 0.50 m
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Max module width = approx. 1.08 m max. module length = approx. 1.70 m
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Angle of installation (fixed) = 13°
Distance between rows = 1.30 – 2.40 m (closed II) respectively 2.15 – 2.45 m (East-West II)
-
(distance between the front of a panel and the front of the one behind)
3
= 0.5. This value must be
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