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Solar Energy Systems
Mounting instructions – MSP-FR-EW flat roof PV mounting system
Basic safety instructions
The following basic safety instructions and warnings form an essential part of these instructions and are of
fundamental importance when handling this product:
− Working clothing which complies with national regulations must be worn.
− Applicable industrial safety provisions must be observed.
− Ensure that all electrical work is carried out by an electrically qualified specialist. Observe all relevant regu-
lations and codes.
− The presence of a second person who can provide help in the event of an accident is obligatory during the
entire installation work.
− Keep a copy of these installation instructions to hand in the immediate vicinity of the system for use by
those commissioned to perform the work.
− Until the PV installation is fully completed and in an operational state, all incomplete sections, components
and materials must be secured in accordance with the prevailing regulations.
Installation conditions
The Schweizer MSP-FR-EW installation system is designed for the following conditions:
− To withstand all prevailing wind and snow load scenarios. However, it must be installed in the correct man-
ner for the conditions for the specific location and project, especially the calculation of any additional ballast
required.
− For fastening of framed photovoltaic panels, with a frame height between 30-50 mm.
− On flat roofs with an inclination not greater than three degrees.
− For panel sizes of length 1495-1159 mm, 1620-1682 mm and 1945-2005 mm and width 950-1010 mm and
1040-1095 mm.
− A maximum block size of 13.63 meters (north-south direction) by 13.20 meters (east-west direction) is per-
mitted to avoid unnecessary stresses on the membrane roof covering from thermal expansion.
− The minimum allowable friction coefficient between the protection sheet and the roofing membrane is 0.3.
− Suitable for environmental conditions within the range of normal environmental corrosively (e.g. at least 1
km from sea coasts), and in more corrosive environments (e.g. C4) if specific maintenance tasks are adhe-
red to (guidelines/ instructions available from Schweizer upon request).
− For all membrane roof coverings, including bitumen, as well as concrete roof surfaces. However, Schwei-
zer is not responsible for ensuring the continued validity of the warranty provided by the roof covering ma-
nufacturer.
− If installing on gravel covered roofs, the gravel must be removed during installation and replaced after com-
pletion so as the protection sheet is in direct contact with the roofing membrane.
− For panels that permit clamping on the short edges in the corner location (Schweizer can provide a list of
approved panels on request). Schweizer is not responsible for ensuring the continued validity of the war-
ranty provided by the panel manufacturer. However, Schweizer will support customers as much as feasibly
and practically possible in obtaining any necessary clamping approvals from panel manufacturers.
− For roofs that can adequately withstand the additional load from the PV system (as verified by, and within
the responsibility of, the customer). The calculated total load acting on the roof from the MSP-FR-EW sys-
tem includes the MSP mounting structure, the panels (as indicated in the design) and the required ballast.
All other loads are excluded (e.g. cables, non-Schweizer cable ducts, invertors etc.).
Installation preparations
An expert assessment of the roof must be obtained in order to verify the suitability of the roof for supporting a
PV system, including structural characteristics, construction standard, and condition.
If necessary, the roof should be tested for suitability, amongst others:
© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
Telefon +41 44 763 61 11
Telefax +41 44 763 61 19
www.schweizer-metallbau.ch
Mounting instructions - MSP-FR-EW
technical changes reserved
27.03.2015/BRX
page 4/12
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