OPTIMUM GS MODULES INSTALLATION MANUAL
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Aplicaciones Técnicas de la Energía S.L. (ATERSA)
www.atersa.com – atersa@elecnor.com
Madrid (Spain) +34 915 178 452 - Valencia (Spain) +34 961 038 430
Shading PV module by trees, building or any obstructions to sunlight should be avoided. Trim
branches and remove unnecessary items that may block the path of sunlight during the
daytime.
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Otherwise, the power output will undoubtedly decline.
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Only PV modules with the same cell size should be connected in series.
•
Do not use modules of different specifications in the same system.
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Grounding should be completed through an attachment of the frame of PV module and
mounting racks in compliance with the national regulations to avoid risks of electrical
shocks or fire.
•
Wiring should be protected and used in location not accessible to children or small
animals to ensure personal safety and to prevent PV module from damage.
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The junction box shall be in the uppermost position to minimize the ingress of water.
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Clearance between the module frame and the mounting surface is required to allow
cooling air to circulate around the back of the module. This also allows any
condensation or moisture to dissipate. The module should never be sealed to the
mounting surface with sealant that prevents air from circulating under the module.
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The recommended standoff height is 10 cm (4 in) (Leave 10 cm of clearance between
the roof and the module frame). Clearance of 10 mm (0.4 in) or more between
modules is required to allow for thermal expansion of the frames.
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The max number of module (N) = V max system
/ [Voc (at STC)]
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Recommended maximum number of 60cells module is 24 in series and 2 in parallel, 72
cells module is 21 in series and 2 in parallel.
•
The maximum PV modules in parallel are two groups of maximum PV modules in
series.
