-8-
For standalone systems with batteries where the PV modules are attached to a permanent
structure, the tilt angle of the PV modules should be selected to optimize the performance
based on seasonal load and sunlight. In general, if the PV output is adequate when
irradiance is low (e.g., winter), then the angle chosen should be adequate during the rest of
the year. For grid-connected installations where the PV modules are attached to a
permanent structure, PV modules should be tilted so that the energy production from the PV
modules will be maximized on an annual basis.
2.3 Mechanical Installation introduction
Solar PV modules can be mounted using the following methods:
﹡Note: All installation methods herein are only for reference, and Econess solar will not
provide related mounting components, the system installer or trained professional personnel
must be responsible for the PV system’s design, installation, and mechanical load
calculation and security of the system.
﹡Note: before installing, you should confirm below important things:
1) Visual check before installation, to make sure there is no bug in the packing and junction
box as well as the surface of module, If have , remove and clean it .
2) Check the series number is right or not.
﹡Note: for UL 1703 , Econess modules are designed to meet a maximum positive (or
upward) and negative (or downward,) pressure of 30 lb/ft²，for IEC 61730-2 , the module
has passed Mechanical loading test 5400Pa（for mono series），2400Pa（for poly series）.
When mounting modules in snow-prone or high-wind environments, Special care should be
taken to mount the modules in a manner that provides sufficient design strength while
meeting local code requirements
2.3.1 Screw fitting:
The frame of each module has 8 mounting holes (Length* Width: 14mm*9mm) used to
secure the modules to support structure. you can use the four symmetry holes close to the
inside on module frame, if excessive wind or snow load are expected, you must use all the
eight mounting holes. the mechanical load of the PV modules mounted through the inside
mounting holes is 2400 Pa, if the outside mounting holes are further used, the mechanical
load is 5400 Pa. The module frame must be attached to a mounting rail using M8
corrosion-proof screws together with spring washers and flat washers in eight symmetrical
locations on the PV module. The applied torque should be big enough to fix it steadily.
Please find detailed mounting information in the below illustration,
