4
• Maintain an adequate distance between the solar module
and the mounting surface to ensure sufficient rear
ventilation.
• The solar modules can be mounted both vertically and
horizontally. Respect the range of clamping.
• In case of extreme snowloads e.g. in some alpine regions,
especially for landscape orientation, an additional rail to
support lowest module row frame parts are appropriate.
• You can find further installation instructions in the
installation manual for the respective installation system.
• The mounting system must be made from material that is
resistant to corrosion and atmospheric conditions and able
to withstand the loads required.
• Installation of cable has to follow the best demonstrated
available technology (e.g.. H1Z2Z2-K standard according to
EN 50618). UV resistant materials has to be used e.g. cable
ties or other cable fixation. Avoid abrasion of wire insulation
caused by e.g. wind. Do not lay cable on sharp edges.
• Respect minimum required bending radius of about 50mm
for 4mm² cable core.
• When routing the cable and plugs,make sure to avoid
possible areas with permanent water accumulations on the
roof.
3.2 Mounting solar modules on installation system
The solar modules can be damaged if the proper
procedure is not followed
Secure the solar modules against slipping and falling.
• Do not drop the solar modules.
• Do not hold the solar module by its socket or connection
cables.
• Always grasp the solar modules simultaneously at two
opposite points on the module frame when lifting.
• Never carry solar modules by just one part of the frame.
• Do not expose the solar modules to mechanical impact.
• Do not touch the solar modules with sharp or pointed
objects. Especially the electric isolating backsheet foil must
not be damaged - immediate safety hazard.
• To prevent lasting marks on the glass, only touch the solar
modules with clean, soft and silicone-free protective gloves
• Do not wear leather or powdered gloves.
• Make sure the rear of the mounted solar module is not
damaged even in the case of deflection due to mechanical
stress (e.g. due to snow loads).
• Do not drop any objects or tools on the solar module and
do not step, kneel or walk on the modules.
• The clamping elements must not protrude past the edge of
the frame on the glass side.
• Use corrosion-resistant stainless steel bolts only.
• Make sure the clamping elements do not damage the frame
surface or bend the frame. Minimum clamp width should
18mm and minimum cover of frame 5mm is recommend.
3.3 Electrical installation
3.3.1 Electrical values
All relevant electrical values and safety properties are
specified on the sticker on the reverse of the solar module.
Under normal conditions, a photovoltaic module is likely
to experience conditions that produce more current and/
or voltage than reported at standard test conditions.
Accordingly, the values of Isc and Voc marked on this module
should be multiplied by a factor of 1,25 when determining
component voltage ratings, conductor current ratings, fuse
sizes, and size of controls connected to the PV output.
The modules are qualified for application class A: Hazardous
voltage (IEC 61730: higher than 50V DC; EN 61730: higher
than 120V), hazardous power applications (higher than
240W) where general contact access is anticipated (modules
qualified for safety through EN IEC 61730-1 and -2 within this
application class are considered to meet the requirements for
safety class II.
The maximum reverse current loadability of the solar
modules is 20 ampere.
3.3.2 General safety instructions
• Carry out the cabling in accordance with the applicable
regulations.
• Make sure that the cables and connections are not
damaged, dry and clean. Protect the cables from damage.
Risk of electric shock.
Risk of fire and injury from electric arc.
• Do not disconnect connectors under load.
• Ensure sufficient protection against contact with live parts.
• Only use insulated and dry tools.
• Do not insert any electrically conducting parts into the
connectors.
• Never open the junction box.
• Make sure there is no tension in the cable when positioning
and follow the specified minimum bend radius.
• Avoid large conductor loops.
3.3.3 Parallel and serial connection
• Solar modules of the same type can be connected in
parallel.
• The solar modules in this series are fundamentally designed
for series connection.
• Only use solar modules of the same type and output
for parallel connection. Take measures for overcurrent
protection (e.g. line fuse) if necessary. Never exceed the
specified reverse current loadability of the solar modules.
Maximum number of module strings that are allowed to be
switched in parallel without further protection devices: 2
strings (fuse rating / (short-circuit current * 1.25) + 1)
