1. Purpose of this document

This guide contains basic information regarding ARTsolar (Pty) Ltd photovoltaic modules, their installation and safe handling. ARTsolar is the brand name of ARTsolar (Pty) Ltd and the name ARTsolar will be used in the rest of this document. All instructions should be read and understood before attempting installation. If there are any questions, please contact your dealer or ARTsolar for further information. This document refers to the PV-modules themselves and is not meant to be a complete installation manual for personnel not specifically trained to install PV-modules. It serves as a general reference. Generally, the installer must conform to all safety precautions in this documentation, as well as the applicable national codes and standards when installing ARTsolar PV-modules. Before installing a solar photovoltaic system, the installer should become familiar with the mechanical and electrical requirements for photovoltaic systems.

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2. System components (modules and mounting system; standard scope of delivery)

• ARTsolar’s photovoltaic modules are manufactured with raw materials. Including; glass/foil laminates, EVA, crystalline solar cells, IP65 or IP67 rated junction boxes that include up to 1m double insulated 4mm2 solar wire (depending on the model) and a pair of MC4 connectors (male and female) and an anodized aluminum frame (silver or black).
• The mounting system does not form part of ARTsolar’s supply.
• Either mounting screws should be used through the provided mounting holes or industry certified overhead clamps should be used for fixing the module. Module fixing is done along the length of the module.
• Recommended supplier for mounting systems: Schletter GmbH, S:FLEX GmbH or Renusol GmbH.

3. General safety relevant aspects

• Do not attempt to disassemble the module, and do not remove any attached nameplates or components. Doing so will void the product warranty.
• The modules are qualified for application class A: Hazardous voltage (IEC 61730: higher than 50V DC; EN 61730: higher than 120V), hazardous power applications (higher than 240W) where general contact access is anticipated.
• Installing solar photovoltaic systems requires specialized skills and knowledge. It should be performed only by qualified and specially instructed personnel. The installer assumes all risk of injury, including risk of electric shock.
• Use only equipment, connectors, wiring and mounting hardware specifically designed for use in a photovoltaic system.

3.1. Transportation and storage

• Handle boxes with extreme care, considered a fragile commodity.
• Do not tilt the boxes more than 15o during handling.
• Take special note of instruction labels on the packaging boxes, outlining how to handle and store packaging.
• Never place boxes upside down / face down in transit.
• Avoid heavy pressure / jolting of the boxes during transit, use strapping to secure boxing.
• Packaging should be protected from rain.
• Transportation should also adhere to the specifications of handling depicted on the packaging box.

3.2. Precautions for mechanical installation

• Very fragile commodity – Take care when handling, transporting, storing and unpacking the modules. Do not carry modules using cables. Do not stand modules on their corners / face down.
• ARTsolar modules are designed for installation with specific photovoltaic mounting systems. Other uses or installation methods will void the warranty.
• The mounting system must be capable of securely fixing ARTsolar modules exposed to uplift or load pressures of more than 2’400 N/m2. 
• When mounting modules, do not cover the drain holes with other components. 
• The junction box should be at the top of the installed module (portrait view) in order to facilitate correct positioning of ventilation holes.
• The mounting structure and hardware must be made of durable, corrosion- and UV-resistant material.
• Observe all instructions and safety precautions included with the mounting system to be used with the module.
• If modules are installed on roofs (non-integral modules or panels), a fireproof underlay is needed. If modules are installed in roofs (so-called BIPV application), all applicable local, regional and national codes and regulations have to be observed.

3.3 Precautions for electrical installation

• Before any manipulation at an installed PV plant, switch the system off first on the AC-side followed by the DC-side of the inverter or the charge controller.
• When disconnecting wires connected to a photovoltaic module that are exposed to light, an electric arc may occur. Arcs can cause burns, start fires or otherwise create safety (up to lethal electric shock) problems.
• Check for remaining voltage before starting the installation, and observe the local safety relevant regulations for such working conditions.
• Make connections only in dry conditions.
• Under normal conditions, a photovoltaic module can produce more current and/or voltage than reported at standard test conditions.
• Accordingly, the values of ISC and VOC marked on this module should be multiplied by a factor of 1.25 when determining component voltage ratings, conductor current ratings, fuse sizes, and size of controls connected to the PV output. In the USA, refer to Section 690-8 of the National Electrical Code (NEC) for an additional multiplying factor of 125 percent (80 percent de-rating) which may be applicable.
• Contact with a DC voltage of 30V or more is potentially hazardous. It is advised that when wiring and installing the PV array that it be done under sun-sheltered areas/covers.
• Only connect modules with the same rated output current in series. If modules are connected in series, the total voltage is equal to the sum of the individual module voltages.
• Only connect modules or series combinations of modules with the same voltage in parallel. If modules are connected in parallel, the total current is equal to the sum of individual module or series combination currents.
• Always use the same type of module within a particular photovoltaic system.
• With a serial interconnection of the modules, the sum of the open circuit voltage at Standard Test Conditions (Voc @ STC) must not pass over the maximal system voltage, indicated both on the module label and on the modules datasheet.
• If the sum of short circuit currents of the parallel connected modules passes over the reverse current (indicated in the module data sheet), string diodes or fuses have to be used in each string of modules connected in parallel. These string diodes or fuses have to be qualified for the maximum expected current and voltage.
• Read the instructions and safety precautions for all other components used in the system, including wiring and cables, connectors, DC-breakers, inverters, etc.
• Use appropriate safety equipment (insulated tools, insulating gloves, etc.) approved for use on electrical installations.

3.4 General prescriptions for installation

• Do not apply paint or adhesive to the modules.
• Do not use mirrors or other hardware to artificially concentrate sunlight on the module.
• When installing modules, observe all applicable local, regional and national codes and regulations. Obtain a building and/or electrical permit where required.
• Keep children well away from the system while transporting and installing mechanical and electrical components.
• Do not wear metallic rings, watchbands, ear, nose, or lip rings or other metallic devices while installing or troubleshooting photovoltaic systems.
• Do not drill holes in the glass surface of the module. Doing so will destroy the module and make the warranty void.
• Do not drill additional mounting holes in the module frame. Doing so will void the warranty.
• Do not lift the module by grasping the module’s junction box or electrical leads.
• Do not stand or step on the module. There is the danger of breaking the glass or slipping with the possibility of severe injury or death!
• Do not drop the module or allow objects to fall on the module.
• Do not place any heavy objects on the module.
• Inappropriate transportation and installation may damage the module.
• Ensure you read the mounting instructions carefully as tightening too much will cause the glass to break.
• All installations are to comply with SANS 10142-1 / SANS 10142-1-2

4. Mechanical Installation

4.1 Robustness of modules and mounting system

ARTsolar’s photovoltaic modules have been tested to withstand loads as per the specific module datasheet. Tests were conducted with a static load for one hour.
The modules must not be mounted in regions where higher wind and snow loads are expected than specified in the module datasheet.
The whole support structure needs to be strong enough to cope with the above loads.
Load calculations to check for the applicability for the actual installation are within the responsibility of the system planner or installer.

4.2 Selecting the location

• Select only suitable locations for installation of the modules.
• In most cases, optimum performance is achieved if the modules face true south in northern latitudes and true north in southern latitudes.
• For detailed information on optimal module orientation, refer to standard solar photovoltaic installation guides or a reputable solar installer or systems integrator.
• The module should not be (partly) shaded at any time of the day.
• Do not install the module near equipment or in locations where flammable gases can be generated or collected.

4.3 Mounting methods

4.3.1 Mounting with bolts

• The module must be attached and supported by at least four bolts M6 or M8 (depending on the situation) through the indicated mounting holes.
• Most installations will use the four inner mounting holes on the module frame.
• Depending on the local wind and snow loads, additional mounting points may be required.

4.3.2 Mounting with clamping hardware

• If module clamps are used to secure the module, the torque on the clamp bolt should be around 8–10 Nm.
• A minimum of four module clamps should be used, two on each long frame side.
• Depending on the local wind and snow loads, additional module clamps may be required.
• Take note not to cover the cells with the clamping structure.

4.3.3 Other

• Other specific photovoltaic mounting methods are acceptable as long as the minimum requirements as described in chapter 4.1 are met.

5. Electrical Installation

5.1 Grounding

• All module frames must be properly grounded in countries where grounding of modules is mandatory. Observe all local electrical codes and regulations.
• For safety reasons it is recommended all module frames should be prepared for grounding.
• A bolted or screwed connection is required, it incorporates:
• a screw size of at least an M4.
• a star washer under the screw head or a serrated screw must penetrate non-conductive coatings like anodized frame
• screw and star washer in stainless steel
• 2 or more screws or 2 full threads of a single screw shall engage the metal
• Devices listed and identified for grounding metallic frames of PV modules are permitted to ground the exposed metallic frames of the module to grounded mounting structures.
• When using lay-in lugs, the grounding conductor should be inserted into the opening, and secured using the set screw.
• Functional grounding is not foreseen for the ARTsolar modules. If it is performed, local electrical codes and regulations have to be observed, and used grounding means have to be isolated from live parts by reinforced insulation.
• In any case the grounding screws, bolts or other parts have to be used separately from mounting parts of the module.

5.2 General electrical installation

WARNING! Electrical shock hazard! Do not touch bare conductors or other potentially energized parts.

• Photovoltaic modules convert light energy to direct-current electrical energy. They are designed for outdoor use.
• Do not use modules of different configurations in the same system.
• ARTsolar modules are supplied with IEC certified cables and connectors for serial electrical connections.
• Use only additional cables which are qualified for the expected maximum current, maximum voltage and environmental conditions. Minimum cross section 4mm2 (#12 AWG).
• The PV-DC-connectors must never be disconnected under load! Adhere to the first rule of chapter 3.3.
• Refer to the relevant standards in your country to determine over current, conductor ampacity and size requirements.
• For best performance, ensure that positive and negative DC wires run closely together avoiding loops, which will also reduce the strength of inductive impacts of nearby lightning strikes.
• Following the installation of a module string, the performance of the string is checked to ensure proper functioning. At least, ISC and VOC need to be checked with appropriate equipment and circuit breakers.

6. Maintenance

ARTsolar recommends the following maintenance items to ensure optimum performance of the module:

• Clean the glass surface of the modules as necessary.
• Dust accumulating on glass surface will result in a reduction of power output. Before applying water, check for any cracks in the glass – If there are do not apply water and contact the installer/ARTsolar for further advice.
• Use water and a soft sponge or cloth for cleaning. A mild, non-abrasive cleaning agent can be used if necessary. Do not use dishwasher detergent.
• Electrical and mechanical connections and the general condition of an installed PV-system should be checked periodically by qualified personnel to verify that they are clean, secure and undamaged.
• Any problems must only be investigated by qualified personnel.
• Also observe also the maintenance instructions for all other components used in the system.

7. Shutting down the system

• Disconnect the system from all power sources in accordance with instructions for all other components used in the system.
• The PV-DC-connectors must never be disconnected under load! Use switches designed for being disconnected under the prevailing DC-load or stick to the first rule of chapter 3.3.
• The system should now be out of operation and can be dismantled. In doing so, observe all safety instructions as applicable to installation

8. Typical electrical ratings of the concerned modules

For further information please refer to the module data sheet.

9. Disclaimer of liability

Because the use of this documentation and the conditions or methods of installation, operation, use and maintenance of photovoltaic products are beyond ARTsolar’s control, ARTsolar does not accept responsibility and expressly disclaims liability for loss, damage, or expense arising out of or in any way connected with such installation, operation, use or maintenance. No responsibility is assumed by ARTsolar for any infringement of patents or other rights of third parties, which may result from the use of the PV product. No license is granted by implication or otherwise under any patent or patent rights.
The information in this documentation is based on ARTsolar’s knowledge and experience and is believed to be reliable, but such information including product specification (without limitation) and suggestions does not constitute a warranty, expressed or implied. ARTsolar reserves the right to change the manual, the product, the specifications, or product information sheets without prior notice.

10) Limited Warranty

ARTsolar (Pty) Ltd (ARTsolar) hereby grants the following Limited Warranty to the customer in respect of any installation (for its own use) (the original “Buyer”) of ARTsolar brand models of solar photovoltaic modules including factory assembled junction box and cables and components listed below including any kits or installations (the “Products”)