5
Mechanical Installation
13
5.2 Monofacial assembly mechanical installation
Module and bracket system connection
can be realized by mounting holes,
clamps or embedded systems. Installa-
tion shall follow the demonstration and
suggestions below. If installation mode
is different, please consult LONGi
customer service personnel and obtain
approval. Otherwise, modules may be
damaged and limited warranty will be
invalid.
5.1 Regular Requirements
•
Make sure that installation method and mounting structure are solid enough to meet the expected load-bearing
requirement, which is requisite assurance from PV system installer. Installation bracket system shall be tested and
inspected by the third party testing institution with static mechanical analysis capacity in accordance with local national
standards or international standards.
•
Mounting structure shall be made from durable, corrosion resistant, UV-proof materials.
•
Modules shall be fixed on the bracket solidly.
•
In regions with heavy snowfall in winter, adjust the height of the mounting system so that the lower edge of the
module is not covered by snow. In addition, ensure the lower part of module is not in the shadow of plants, trees or
damaged by flying sand and stone.
•
If modules are installed on brackets parallel to the roof or wall, the minimum gap between the module frame and the
roof/wall shall be 10cm which is good for air circulation to achieve better performance of module. Make sure the building
is suitable for installation before installing modules on roof. Moreover, seal properly to prevent leakage.
•
The module frames can appear thermal expansion and cold contraction. So the minimum distance between two
adjoining modules shall be no less than 10 mm (0.39 inch).
•
Make sure that backsheet of modules will not be in contact with bracket or building structures that can pierce into the
inside of the modules, especially when the module surface is imposed by pressure.
•
Maximum static load of the PV module is downforce 5400pa and uplift force 2400pa, which can vary from different
mounting methods of the modules (please refer to the following installation guidance), the described load in this manual
is for the test load.
•
Note: on the basis of IEC61215 - 2016 installation requirements, when computing the corresponding maximum design
load, a safety factor of 1.5 need to be considered in compliance with the local laws or regulations.
•
Modules can be installed horizontally or vertically. When installing the components, be cautious not to block the drain
hole of the frame.
