Installation guide solar modules
V1 – April 2015
14 - 19
The obligatory position of the clips along the frame depends on which side of the module is used for the
installation.
Note that on both sides of the module the pressure clamps always should be mounted in a symmetric
position with respect to the center line for a proper load distribution.
Clamps must be installed according to the manufacturer’s specific instructions. Do not apply excessive
pressure on the frame such that the frame deforms. MegaCell recommends a torque of approximately 10
Newton meter [Nm], but refer to the clamp manufacturer for specific hardware and torque requirements.
For a safe and effective installation of MegaCell framed modules, the lengths for the pressure clamps are
strongly recommended is not less than 50 mm for 60 - 156 x 156 mm cell modules.
The minimum recommended clamp thickness is 2,5 mm
The clamps should have contact only with the module frame and, to avoid shadowing effects and possible
damage, should not overlap onto or over the module glass.
Do not install the modules with pressure clamps mounted out of the specified areas, otherwise the module
mechanical resistance may be affected.
Use of unauthorized laminate clamps will render the product and performance warranty void
5.2
Frameless modules
The use of frameless MegaCell modules requires frameless mounting system that grabs the edge of the
module with a pressure clamp that is lined with rubber pads (EPDM, etc).
The clamps must overlap from the edge of the module by at least 10mm but should avoid shading the cells
in the module. The applied torque used to attach the clamps to the module/racking should refer to the
mechanical design standard for the specific bolt in use.
For 4 point mounting, 4 mounting clamps should be located as described on paragraph 5.4
Depending on local snow and wind conditions, more than 4 clamps may be needed to ensure that the
modules can withstand the expected load. For loads larger than 4000Pa (50psf), ensure that each clamp has
a minimum length of 120mm. Do not use clamps with a length smaller than 80mm unless approved by
MegaCell.
When installing modules in an array, please allow for a minimum lateral air gap of at least 10mm between
the exposed edges of the adjacent modules to account for thermal expansion and contraction of PV system
elements in the field.
5.3
Frameless modules: continuous mounting (Carports, BIPV, etc.)
For a continuous mounting system where the entire perimeter of the module is used, the mounting surface
that contacts the module should:
o
Be a rubber material (such as EPDM, etc.) on all surfaces making contact with the module.
Summary of Contents for MBA-GG60 BiSoN Series
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