AUO AC Unison
[AUO AC Unison Installation Guide]
[Page 32 of 44]
[February 2012 Rev. 1.0]
PV modules should be installed in a location where there is no shading throughout the year. In the northern hemisphere, PV
modules should typically face south, and in the southern hemisphere, PV modules should typically face north. Please make
sure that there are no obstructions in the surroundings of the site of installation. Take proper steps in order to maintain
reliability and safety in case the PV modules are installed in areas that have heavy snow / extreme cold / strong winds /
installations over, or near, water and areas where installations are prone to salt water exposure or on small islands or in desert
areas.
PV modules should be tilted so that the energy production from the PV modules will be maximized on an annual basis. The tilt
angle of the PV module is measured between the surface of the PV module and a horizontal ground surface. AUO PV
modules produce the most power when the sun’s rays strike the module perpendicular to the module surface. To avoid
performance losses in series circuits, ensure that all modules have the same tilt and orientation.
The frame of the module must be connected with the substructure rails (mounting strips) by at least four points. The following
figures illustrate the installation and the mounting area and the position of the mounting hole. Under no circumstances may the
short frame edges be used for anchoring the module. The assembly on the support structure using the pertinent holes and
specific nuts and bolts. The screws should be tightened up to 5.5 Nm (4.1 lb-ft). The module’s frame must not be drilled nor put
under pressure with other securing systems. The air gap must bigger than 45mm.
The following considerations might affect the placement of the mounting system or the alignment of the modules on the
mounting system. However, no attempt is made to describe how to install the mounting system on the roof or how to use
module clamps.
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Mounting rails must be positioned below the micro-inverter. Do not install modules with the micro-inverter resting on the
mounting rail. The frame of the installed module must rest firmly on the mounting rail. Installing a module with the
micro-inverter resting on the rail and uneven contact between the frame and the rail can cause damage to the
micro-inverter and the module.
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When the mid-cable receptacle is attached to the AC Unison module with wire management components, the mid-cable
receptacle extends beyond the edge of the module frame. Mounting rails must be positioned to not interfere with the
mid-cable receptacle.
7.0 PV System Attachment Mounting Considerations
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