Basic Safety Instructions; Installation Conditions; Installation Preparations - Hilti MSP-FR-EW Instructions De Montage

maintaining the necessary edge distance to the roof, the provision of safety
barriers, the restriction of access during operation, or precautions for expected
dynamic loads or specific conditions such as earthquakes and severe weather
patterns.

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 specia-
list. Observe all relevant regulations and codes.

Installation conditions

The Hilti 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 manner 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
30-50mm.
• On flat roofs with an inclination not greater than three degrees.
• For panel sizes of length 1620-1680mm and 1945-2005mm and width
950-1010mm and 1040-1095mm.
• A maximum block size of 13.63 meters (north-south direction) by 13.20 meters
(east-west direction) is permitted to avoid unnecessary stresses on the memb-
rane 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 environ-
ments (e.g. C4) if specific maintenance tasks are adhered to (guidelines/instruc-
tions available from Hilti upon request).

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:
• Sufficient structural capacity for the additional loads arising from the PV
installation.
• Consideration of the permissible bearing pressure capacity of the insulation
material.
• Compatibility, and condition, of the roofing membrane.
• Adequate water drainage and lack of water pooling.
• Condition of the roof (free from damage).
• If the system is fastened to the building in any form, it is the responsibility of
the customer to ensure the adequate design and provision of that fastening.
• 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 accor-
dance with the prevailing regulations.
• For all membrane roof coverings, including bitumen, as well as concrete roof
surfaces. However, Hilti is not responsible for ensuring the continued validity of
the warranty provided by the roof covering manufacturer.
• If installing on gravel covered roofs, the gravel must be removed during installa-
tion and replaced after completion 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
(Hilti can provide a list of approved panels on request). Hilti is not respon-
sible for ensuring the continued validity of the warranty provided by the panel
manufacturer. However, Hilti 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 system 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-Hilti cable ducts, invertors,
etc.).
Prior to initiating the PV system installation, the roof must be:
• Brought to the minimal standards required.
• Thoroughly cleaned, with all dirt and debris removed.
• Free from snow and ice.
The customer must verify that the installing conditions required for MSP-FR-EW are
satisfied. Ensure those commissioned with the work are fully familiar with the design
layout created.
Distribute the material evenly on the roof so as not to create concentrated loading.
Make sure the required tools are available (a torque wrench, battery powered screw-
driver such as the Hilti SF 14-A, and a size 30 Torx attachment.
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