Carefully read through these installation instructions before installation, operating or servicing PV System. Failure to follow these instructions may result in bodily injury or damage to property. The installation, setup, maintenance, repairs of a PV systems must be carried out by qualified and authorized persons.

Installation Guide

Danger of Death from Electric Shock!
Solar modules generate electricity as soon as they are exposed to light. One module on its own is below the safety extra low volt level, but multiple modules connected in series (summing the voltage) or in parallel (summing the current) represent a danger. The following points must be observed when handling the solar modules to avoid the risk of fire, sparking and fatal electric shock.
1. Do not insert electrically conducting parts into the plugs or sockets!
2. Do not fit solar modules and wiring with wet plugs and sockets!
3. Please use insulated tools and insulated gloves, etc., when carrying out work on wiring and safety equipment!
4. Do not use damaged modules! Do not dismantle modules!
5. Do not mark on the rear of the module using sharp objects!
6. Take utmost caution when working on wiring and the inverter and be sure to follow the installation instructions strictly!

Danger of Death from Arcing
Modules generate direct current when light shines on them. An arc may be produced when connections are separated. Hence, we suggest you cover modules with a light-proof cloth when installing the modules. When breaking a connected string of modules, for example, when disconnecting the Dc line from the inverter under load, a lethally strong arc can occur:
1. Never disconnect the solar generator from the inverter while the inverter is connected to the mains grid, please first remove the fuse from the ac side on the inverter!
2. Be sure that cable connections are in perfect condition, no splitting, soiling or other contamination!

Unpacking the Modules and Storage
Handling the modules requires great care. Be careful when unpacking, transporting, and storing the modules.
1. Transport modules in an upright position.
2. Carry modules with both hands. Do not use the connection socket as a handle.
3. Ensure modules do not bow under their own weight.
4. Do not place modules on top of each other.
5. Do not place load or stand on them.
6. Do not mark using sharp implements.
7. Keep all electrical contacts clean and dry.

If it is necessary to store the modules temporarily, please store them in a dry, ventilated room.

General Safety Information
Be sure that the module is used only in applications where it is suitable for. The installation, setup, maintenance and repair of a PV system must be carried out by appropriately qualified and authorized persons.
While installing the solar modules, please follow the Din standards, construction rules and safety instructions.

Installing the Modules
When installing the modules, please pay attention to the following instructions.

Keeping within the Maximum Permitted Load
The maximum load on the module must not exceed 2.4kn/m2. To avoid exceeding the maximum load, users should take into account the site-specific live loads such as wind and snow.

Environmental Conditions
The module is designed for use in temperate climatic conditions. The module has no resistance to explosion. Hence it must be kept away from highly inflammable gases, vapors, naked flames or flammable materials, and must not be installed in the proximity of filling stations, gas containers, and paint equipment. Do not expose modules to concentrated light sources. Besides, it is forbidden to immerse the modules in water or constantly expose modules to water. Besides, we suggest that solar modules be installed at least 500m from the sea and sulphur (sulphur sources, volcanoes). If they are exposed to salt, they may be corroded.

Requirements of Installation
Make sure the electrical performances of modules in a system are the same. The modules connected in series must all have the same amperage. The modules connected in parallel must all have the same voltage. Connect a certain quantity of modules together to match the voltage specifications of the devices used in the system. However, the voltage created by connected modules should not be higher than the permitted system voltage. The method to minimize risk in case of an indirect lightning strike is to avoid forming loops when designing the system. Be sure that the mounting system can also withstand the anticipated wind and snow loads. Make sure that the openings on the back side of the module are not blocked up after mounting, because precipitation can run off through the small openings.

Optimum Orientation and Tilt
By figuring out the optimum orientation and tilt of PV modules, the maximum annual yield can be achieved. The best conditions to generate maximum power are that sunlight shines vertically onto the PV modules.

Avoid Overshadowing
Any partial shading, from dirt deposits, for example, will cause a reduction in yield. Thus the module should not be shadowed or covered. If it is unshadowed across its entire surface for the whole year, the unobstructed sunlight can reach the module even on the shortest day of the year.

Reliable Ventilation
Effective ventilation prevents the build-up of heat which would reduce performance.

Earthing
Although the modules are certified to safety class ii, we still would like to give some suggestions about earthing. The earth connection must be carried out by a qualified electrician.
Option 1
Connect module frames to each other using cables with cable lugs, and the hole (M4mm) provided for this purpose.
To create the conductive connection (frame is anodized), you can use a serrated washer or a self-tapping screw (φ3.5mm).The earth connection should be carried out by a qualified electrician.
Option 2
Create an electrical connection between the frames and the mounting system, e.g. by using serrated washer, then have the mounting system earthed by a qualified electrician. See example A of "Mounting".

Make sure that the conductive connection is not interrupted or influenced when making daily maintenance and that all the crunodes on the conductive connection are firmly fixed. The fastness does not depend on soldering.
The metal containing iron in the conductive connection should be processed through anodization, spray-painting, galvanization. If the material is stainless steel, there is no need to process it/

Mounting
Each module must be securely fastened at a minimum of 6 points. The frame has undergone stress test for mounting on the long sides.

Example for Mounting the PV Modules to the Substructure:

Example A:
Bolting
Earthing is provided by use of the serrated washer

1 stainless steel M8 nut
2 stainless steel serrated washer
3 Stainless steel M8 t-head bolt

Example B
clamping on (additional earthing required)

1 stainless steel M8 nut
2 stainless steel serrated washer
3 Stainless steel M8 t-head bolt
4 aluminum clamping plate
5 EPDM washer 2mm

A torque wrench is recommended to be utilized for installation. In example B, the tightening torque (using stainless steel M8 bolts) should be around 15-20Nm. Please use the pre-drilled holes for securing the module rather than drilling additional holes, or else, the warranty will be invalid. Besides, we suggest appropriate corrosion-proof fastening materials be used.

Wiring
For the Wiring, Pay Attention to

1. Correct wiring scheme
To minimize risk in the event of an indirect lighting strike, please avoid forming loops when designing the system. Please check to make sure that wiring is correct before starting up the generator. If the measured open circuit voltage (Uoc) and short-circuit current (ISC) is different from the specifications, there is operation error during wiring.
2. Correct connection of multi-contact plug connectors
The plug connector has its own polarity. Make sure that the connection is safe and tight. There should be no external stress on plug connector. Or else, it can only be used to connect the circuit.

Use of Suitable Materials
Use cable extensions and plugs that are suitable for outdoor applications and make sure that they are in perfect electrical and mechanical condition. Use only cables having one conductor. Select the appropriate cable diameter to minimize voltage drop. To calculate the minimum cable diameter and appropriate fuse, multiply the isc and uoc by a factor of 1.25.

Maintenance and Cleaning
Do not change the PV components, such as diode, junction box, plug connectors optionally. Given a sufficient tilt, at least 15°, the modules need not to be cleaned frequently because the rainfall will help clean them. To prevent heavy soiling which will lead to output reductions, we recommend cleaning the modules using plenty of water from a hose without cleaning agents and using a gentle cleaning implement, such as a sponge. Please do not scrape or rub away the dirt when it dries, because this will scratch the modules. The PV systems should be inspected regularly.

Checklists
1. All fastenings are tight and secure and free of corrosion.
2. All cable connections are secure, tight, clean and free of corrosion.
3. Cables are not damaged in any way.
4. Checking the earthing resistivity of metals.