INSTALLATION MANUAL UL

Contact Information Of Manufacturer: 19F, Block C, Wanda Plaza, Jianye District, Nanjing 210019, China Tel: 86 25 86898096 86898098 Fax: 86 25 86898097 E-mail: support@etsolar.com www.etsolar.com You may contact our regional branches for questions and services: 4900 Hopyard Road, Suite 310, Pleasanton, CA 94588, USA Tel: +1 925 4609 898 Fax: +1 925 4609 929 Email: sales @etsolar.us INSTALLATION MANUAL UL ET SOLAR SERIES MODULE Please consult your dealer or the manufacturer concerning the warranty of your modules. If you have any further questions, your dealer and ET Solar will gladly assist you. Subject to technical modifications without notice.2016 ET Solar Group

TABLE OF CONTENTS The photovoltaic module produces electricity when exposed to the sun or other light 1 Company Introduction 1 sources. For your safety and the safety of others, please read the entire Installation and Assembly Instruction manual carefully prior to installation. Please carefully read the 2 Structure of module 1 following installation and safety instructions. Non-compliance with these instructions may void the module warranty. 3 Installation of modules 2 3.1 Installation 2 1. Company Introduction 3.1.1 Mounting with Bolts 3 ET Solar Group is a vertically integrated solar energy equipment manufacturer and turnkey solutions provider. With local sales and marketing subsidiaries and offices 3.1.2 Mounting with Clamps 3 throughout Asia, Europe, and North America, we provide high quality photovoltaic modules, world leading solar tracking systems and smart turnkey solutions to our 3.1.3 Anti-salt module mounting procedure 4 customers in more than 50 countries and areas. Our products have been delivering strong operating performance in a large number of residential and utility scaled solar 3.1.4 Grounding of normal modules 7 PV projects around the world. 3.2 Fire Safety 9 2. Structure of module 3.3 Junction box 10 ET modules are made by layering 3.4 Output Voltage, Current and Maximum Power 13 low-iron-tempered glass, an EVA sticky membrane, high conversion efficient solar 4 Characteristics of Modules 14 cells and a behind-the-membrane multi-layer backsheet. These elements are 5 Operation and Maintenance 15 laminated into a plate by being heated in a vacuum. After installing the aluminum 6 Disclaimer of liability 15 alloy frame and wiring compartment, a module is born (see Fig. 1) Fig.1 Front and back sides of Appendix 1 Electrical ratings of ET Solar modules 16 ET-P660260WW module 1

3. Installation of modules Do not attempt to clean a module with a broken glass cover or a perforated backsheet. Such a module can present a serious shock hazard. 3.1 Installation When installing the modules, the face of the units should be placed where they are highly exposed to the sun. It is recommended that the modules usually face the equator; thus, in the Northern Hemisphere the surface should be oriented towards the south, and in the Southern Hemisphere, towards the north. Usually the angle between modules and the ground should be local latitude ± (5 ~10 ) as shown in Fig.2. The assembly is to be mounted over a fire resistant roof covering material when roof mounting is intended for the modules, the fire resistance of roof covering or wall should be rated for the application. The local shading of modules may cause serious hot-spots and damage the modules. The modules are for use in applications where they do not serve as a member of the building primary structural frame. A torsion and corrosion-resistant anodized aluminum frame ensures dependable performance, even under harsh weather conditions. Four or eight pre-drilled mounting holes, located on the aluminum alloy frame, are provided for ease of installation. They are designed to be used with metric M8 stainless steel screws. We recommend to use a tighten torque of 16~20 N.m. 3.1.1 Mounting with Bolts The module must be attached and supported by at least four bolts 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. 3.1.2 Mounting with Clamps Fig.2 Assembly installation angle The recommended standoff height is 5 in. (127mm).If other mounting means are employed this may affect the UL Listing. The specific angle depends on the sunlight condition, local climate and the actual application requirements. The appropriate angle of elevation has a very important relationship to the output power of the modules and the cost of the construction. The surface of the modules should avoid shading and be kept clean from foreign materials such as dirt. A minimum of four module clamps should be used, two on each long frame side, in the general clamping areas denoted by the wide arrows on the drawing. Depending on the local wind and snow loads, additional module clamps may be required(e.g. if the combined wind and snow load is as high as 5400pa, please use eight clamps). If module clamps are used to secure the module, The torque should refer to mechanical design standard, we recommend the following torque for bolt: M6------9 N.m M8------16~20 N.m 2 3

Fluorocarbon paint Grounding wire ring Grounding wire Option 2 Grounding System Installation Steps: 1) Before the installation of each module, clean the frame installation area (35mm by 100mm surrounding the grounding hole) and keep it dry. 2) Choose either one of the two options described in the diagrams above to properly Fig. 3 Module mounting with clamps 3.1.3 Anti-salt module mounting procedure For photovoltaic systems to be installed near the coastline, we recommend using ET SOLAR Anti-salt modules with the following installation action items. Mainstream Grounding Methods: ground the module. 3) Spray varnish on the yellow portion of the diagram covering the entire grounding area. We recommend fluorocarbon varnish. Recommended mounting methods For mounting system with bolts, refer to picture 1 and 2. Hexagonal screw Grounding bolt Fluorocarbon paint Plain washer Elastic washer Grounding wire Insulation gasket Picture1 Picture 2 4 5

For mounting system with clamps, refer to picture 3 and 4. Briquetting Nut Plain washer Insulation gasket Bolt Picture 3 Picture 4 Maintenance Attentions Aside from components that are parts of the grounding circuit, all other components should be insulated from the module frames using non-conductive gaskets. For fluorocarbon varnish or other chemicals, please follow the instructions strictly, personal protective equipment (such as goggle, mask, gloves etc) may be needed during the operation. No photovoltaic module should be installed within 50 meters from the edge of the coastline. In areas between 50 meters and 500 meters from the edge of the nearest coastline, we recommend ET SOLAR Anti-salt Modules to be used in photovoltaic energy systems installations. In areas greater than 500 meters from the edge of the nearest coastline, we recommend conventional modules to be used in photovoltaic energy systems installations. 1) 2) To ensure optimum modules performance at project sites near the coastline, we recommend the following maintenance services once every 3 months: Inspect the frames, mounting systems, grounding holes and other easily corrodible areas. Clean the frames, mounting systems, grounding holes and other areas subject to dust and salt accumulations. 3.1.4 Grounding of normal modules Except for equipment grounding, ET Solar recommends the negative pole of PV module array is connected to earth during all PV system installations. That will keep optimal performance of PV Power Plants, which are located in a hot, high humidity climate and high Maximum System Voltage. 1) 2) 3) To maintain and repair installation sites that are rusty and corroded: Clean up the dust and salt accumulations around the rusty areas. Spray fluorocarbon varnish on all installations and rusty areas. Make sure that no area is missed. For other operation and maintenance guidance, please refer to near-coast installation standard. All permanently mounted modules have to be provided with appropriate grounding. The grounding lug should be suitable for outdoor use with aluminum.the grounding method of the frame of arrays shall comply with the NEC, article 250 and also meet UL 1703 standard. Lay-in-Lug ground part with 32 threads per inch (e.g., the lay-in-lug with UL file number E34440, part # GBL-4DBT) should be mounted to one of the 4 mm diameter grounding holes marked as grounding hole on the frame. 6 7

When the module system is used, it should be connected to the ground reliably. The ground wire should be a naked copper wire with surface coating only and with no insulation jacket. The area of cross-section of wire should be sized in accordance with the prime current carrying conductor. The area of cross-section of wire should meet the NEC, article 250. Installation in Canada shall be in accordance with CSA C22.1, Safety Standard for Electrical Installations, Canadian Electrical Code, Part 1 ( refer Figure 4). the frame to obtain reliable grounding termination. Recommended stainless steel screw assembly torque is 13.5 lb.inch(1.5 N.m), Next, insert the grounding wire (10-12AWG exposed copper wire is recommended) to the feet of the lug, and screw down the slotted screw(recommended torque is 13.5 lb.inch(1.5 N.m)). Be careful not to damage the wire copper. Fig.5 Module to grounding rod Fig.4 PV module grounding with lay in lug (Φ4mm grounding holes) 3.2 Fire Safety Consult your local authority for guidelines and requirements for building or structural fire The lay-in grounding lug, manufactured by ILSCO, type GBL-4DBT installed to frame using stainless steel screw, secured to hole opening by star washer, flat washer, split washer and nut, All hardware used is stainless steel. The starwasher is used to break the coating of safety. Roof constructions and installations may affect the fire safety of a building; improper installation may create hazards in the event of a fire. 8 9

Use components such as ground fault circuit breakers and fuses as required by local authority.do not use panels near equipment or in places where flammable gases may be generated. The modules have been rated Fire Class C, and are suitable for mounting on to a Class A Connectors provided by different suppliers will not mutually match up.different connectors provided by one supplier will not match up either.only one type of the same connector from one supplier should be used to ensure the reliability of the electrical connection. roof. The module fire performance is type 1 rated with the special construction in below table. Module Model Specific Construction Module Type Module Male connector Female connector Manufacturer Notes All Models Superstrate: 3.2mm thickness 4.36mm; Encapsulant: 0.25mm thickness thickness of Item 2b in 4.0; Substrate: thickness of item 15f Type 1 ET-P654 ET-P648 ET-P636 1394461-2 PV-KST4 TL-Cable01M 1394462-4 PV-KBT4 TL-Cable01F Tyco Electronics Multi-Contact Zhenjiang Tongling QC Solar Amphenol 12AWG wire in 4.0 thickness 0.64mm PV-JM601M PV-JM601F Zhejiang Jaming A6-2 A6-3 T-Conn Precision Confirm mounting slope less than 5 in/ft (127mm/305mm) to maintain a fire class rating. 1394461-2 1394462-4 Tyco Electronics Be aware of the linear thermal expansion of the module frames (the recommended PV-KST4 PV-KBT4 Multi-Contact minimum distance between two modules is 1 cm). ET-P672 TL-Cable01M TL-Cable01F Zhenjiang Tongling ET-P660 QC Solar 12AWG 3.3 Junction box The junction box should be fixed on the top end of the module during installation so as to prevent the seepage of rain. ET Solar provides a wiring type box. When the integrated J-box is adopted, no tool is necessary for wiring. Just connect the modules in according to or -. You can complete complex and parallel connection easily and quickly using different electric connectors provided by your supplier. ET-M660 ET-M672 ET-M572 ET-M536 PV-JM601M A6-2 SL4-11(Male) PV-KST3 TL-Cable01M PV-JM601F A6-3 SL4-11(Female) PV-KBT3 TL-Cable01F Amphenol Zhejiang Jaming T-Conn Precision Dongguan Zerun Multi-Contact USA Zhenjiang Tongling QC Solar wire 12AWG wire Amphenol 10 11

There are other options in addition to using a wiring type junction box only consisting of two terminals marked with "+" and "-" to represent the positive and negative terminals of the power supply. Some junction boxes include three or more terminals. Only those terminals indicated with "+" and "-" should be connected to the load. The others are designed for the bypass diodes to reduce the damage to modules caused by hot spots and to ensure undisrupted electrical energy output from the array. The hex nut in the exit position on the junction box is used to hold a rubber ring to seal the box. When disconnecting the connectors of a photovoltaic module in a module array that is exposed to sunlight, electric arcs may result. Such arcs may cause burns and fires. Therefore, PV system commissioning and maintenance must be performed by a qualified electrician in accordance with the NEC. Before disconnecting a module in a solar array, disconnect the string of module from the DC Disconnect at the inverter side, and then fully cover the module with an opaque material. Do not short the positive and the negative connectors of a module exposed to sunlight. Wiring must only be completed by a qualified engineer with suitabletools. The specification of wire for the electric coupler that ET Solar provides is 1 x 4.0mm². Equivalent wire should be used if the user prefers to use his own wire. When the module s rated current is lower, 12AWG wire is recommended for use, and the strength of the wire should be taken into consideration. ET Solar does not provide any output wiring for module installation. ET Solar modules are designed to use copper wire only. The Wiring used is UL listed, rated 1000 V/600V, temperature rating 90 C,wet or dry, Sunlight Resistant, 12 AWG, Type PV Wire. The installation in Canada shall be in accordance with CSA C22.1, Safety standard for electrical installations,canadian Electrical Code, Part 1. 3.4 Output Voltage, Current and Maximum Power The open-circuit voltage (Voc), short-circuit current (Isc) and maximal power (Pmax) are printed on the PET label on the backside of the module. The electrical characteristics are within ±10 percent of the indicated values of Isc, Voc and Pmax under standard test conditions (irradiance of 100 mw/cm², AM1.5 spectrum, and a cell temperature of 25 C (77 F)). Under normal conditions, a photovoltaic module is likely to experience conditions that 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 capacities, fuse sizes, and size of controls connected to the PV output. If modules are to be installed in parallel (electrically), each module (or string of modules so connected) shall be provided with the maximum fuse as specified. In order to avoid electric shock and scalding, it is necessary to cover the surface of the module with a suitable material to prevent incidental light contacting the modules during the connection process. The modules will generate electrical energy under sunlight and otherlight sources. Refer to Section 690-8 of the National Electrical Code for an additional multiplying factor of 125 percent (80 percent derating) which may be applicable. 12 13

4. Characteristics of Modules 5. Operation and Maintenance The product is designed as a plain plate type that should not be irradiated directly under concentrated light. The array consists of modules in and parallel and has a similar electrical curve to that of a single module. In order to output maximum electrical power to the load, try to make the impedance of the load match the electric performance of the module or array. In order to maintain the stability of the system, also pay attention to the changes in the electric curve of modules, especially under weak light. In more complex control circuits, the controller supplier may have already adopted microprocessors for the tracking of maximum power output. For the best impedance matching and the best tracking of maximum power output, please refer to other relevant documents regarding these issues. ET Solar module users should rinse the array seasonally or as needed in dry, dirty areas to improve the performance of their solar electrical systems. Heavily soiled modules will have a decrease in performance due to reduced light on the photovoltaic cells. Studies by the PVUSA in Davis, CA estimate that during a dry year module soiling may affect performance by as much as 7% annually with no cleaning. Seasonal rains often clean the modules.however, during the long dry summer, it is helpful to rinse the modules as needed. ET solar modules may be rinsed with clean water to remove dirt. Normal pressure from a standard residential hose and nozzle is recommended. Early morning and late afternoons are favorable times to clean to avoid a sudden change in temperature. Care must be taken since modules produce energy any time light is present. Modules are not to be touched or walked on except by a licensed professional. Electrical ratings of ET Solar modules are shown in Appendix 1. For the detailed specifications, please refer to the module datasheet. Usually the load of the modules is a group of batteries. To prevent the modules from being charged by batteries under the circumstance of no sunlight, it is important to add a shut-off diode in. Also, please consider the voltage decrease of PN junction of about 0.7V when connecting the shut-off diode. The modules can withstand for a maximum positive or negative design loading of 45 lbs / ft². The environmental temperature may also affect the modules output power. If the environmental temperature goes up, the short-circuit current will increase a little, while open-circuit voltage will decrease, which will result in a decrease in the module s output power. Therefore, a lower environmental temperature is most appropriate for the module. 6. Disclaimer of liability Because the use of this manual and the conditions or methods of installation, operation, use and maintenance of photovoltaic products are beyond ET Solar's control, ET Solar 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 ET Solar for any infringement of patents or other rights of third parties, which may result from use of the PV product. No license is granted by implication or otherwise under any patent or patent rights. The information in this manual is based on ET Solar's knowledge and experience and is believed to be reliable, but such information including product specification (without limitations) and suggestions does not constitute a warranty, expressed or implied. ET Solar reserves the right to change the manual, the product, the specifications, or product information sheets without prior notice. 14 15

Appendix 1:Electrical ratings of ET Solar modules Module Family ET Mono, ET-M536 ET Mono, ET-M572 ET Mono, ET-M660 ET Mono, ET-M672 ET Poly, ET-P636 Model Type Open circuit voltage at STC(Vdc) Short circuit current at STC(Adc) Rated Voltage at STC (Vdc) Rated current at STC(Adc) Rated maximum power at STC(watts) Maxi mum fuse(a) ET-M53640xx 21.96 2.54 17.68 2.27 40 5 ET-M53670xx 21.45 4.45 16.9 4.14 70 8 ET-M53675xx 21.73 4.72 17.4 4.31 75 ET-M53680xx 21.88 4.98 17.64 4.54 80 ET-M53685xx 22.66 5.12 18.05 4.71 85 ET-M572155xx 43.3 4.98 35.2 4.4 155 10 ET-M572160xx 43.9 5.07 35.26 4.49 160 ET-M572165xx 44.12 5.19 35.68 4.6 165 ET-M572170xx 44.16 5.3 36.13 4.71 170 ET-M572175xx 44.25 5.5 36.24 4.83 175 ET-M572180xx 44.6 5.61 36.3 4.95 180 ET-M572185xx 44.6 5.8 36.3 5.09 185 ET-M572190xx 44.85 5.64 36.89 5.15 190 ET-M572195xx 45.2 5.75 37.43 5.21 195 ET-M572200xx 45.45 5.87 37.88 5.28 200 ET-M572205xx 45.53 5.99 37.95 5.4 205 ET-M660260xx 38.22 9.01 30.63 8.49 260 15 ET-M660265xx 38.29 9.10 30.64 8.65 265 ET-M660270xx 38.68 9.12 30.83 8.76 270 ET-M660275xx 39.08 9.14 30.97 8.88 275 ET-M660280xx 39.12 9.29 31.43 8.91 280 ET-M660285xx 39.18 9.46 31.85 8.95 285 ET-M660290xx 39.68 9.59 32.12 9.03 290 ET-M660295xx 39.78 9.65 32.35 9.12 295 ET-M660300xx 39.97 9.69 32.54 9.22 300 ET-M660305xx 40.26 9.78 32.76 9.31 305 ET-M672310xx 45.40 8.97 36.60 8.47 310 ET-M672315xx 45.91 9.01 36.72 8.58 315 ET-M672320xx 46.31 9.08 37.00 8.65 320 ET-M672325xx 46.54 9.11 37.11 8.76 325 ET-M672330xx 46.64 9.29 37.55 8.79 330 ET-M672335xx 46.75 9.33 37.94 8.83 335 ET-M672340xx 46.91 9.41 38.17 8.91 340 ET-M672345xx 47.13 9.48 38.38 8.99 345 ET-M672350xx 47.64 9.59 38.51 9.09 350 ET-M672355xx 47.74 9.65 38.93 9.12 355 ET-M672360xx 47.96 9.69 39.05 9.22 360 ET-M672365xx 48.22 9.77 39.38 9.27 365 ET-M672370xx 48.45 9.88 39.70 9.32 370 ET-P636115xx 21.75 7.55 17.2 6.68 115 ET-P636120xx 21.75 7.63 17.4 6.89 120 ET-P636125xx 21.75 7.8 17.4 7.18 125 ET-P636130xx 21.75 8.1 17.41 7.47 130 ET-P636135xx 21.96 8.41 17.6 7.67 135 ET-P636140xx 22.54 8.42 17.95 7.8 140 ET-P648180xx 29.34 8.25 23.66 7.61 180 ET-P648185xx 29.75 8.38 23.75 7.79 185 ET-P648190xx 29.81 8.63 23.86 7.96 190 ET-P648195xx 29.83 8.82 23.93 8.15 195 ET Poly, ET-P648200xx 30.06 8.92 24.1 8.3 200 ET-P648 ET-P648205xx 30.31 9.04 24.35 8.42 205 ET-P648210xx 30.34 9.17 24.5 8.57 210 ET-P648215xx 30.71 9.28 24.74 8.69 215 ET-P648220xx 31.07 9.35 25.06 8.78 220 ET-P648225xx 31.27 9.47 25.42 8.85 225 ET-P648230xx 31.68 9.58 25.76 8.93 230 ET-P654180xx 32.35 7.6 26.45 6.81 180 ET-P654185xx 32.3 7.7 26.45 6.99 185 ET-P654190xx 32.5 7.72 26.78 7.1 190 ET-P654195xx 32.75 7.98 27 7.22 195 ET Poly, ET-P654200xx 32.72 7.86 27.21 7.36 200 ET-P654 ET-P654205xx 32.8 8.1 27.3 7.5 205 ET-P654210xx 32.83 8.3 27.54 7.63 210 ET-P654215xx 33.2 8.5 27.54 7.81 215 ET-P654220xx 33.2 8.8 27.54 7.98 220 ET-P654225xx 33.7 8.78 28.33 7.94 225 ET-P660235xx 37.18 8.5 29.83 7.88 235 ET-P660240xx 37.27 8.68 29.96 8.02 240 ET-P660245xx 37.26 8.82 29.81 8.22 245 ET-P660250xx 37.58 8.88 30.12 8.3 250 ET Poly, ET-P660255xx 37.89 9 30.29 8.42 255 ET-P660 ET-P660260xx 38.16 9.07 30.59 8.5 260 ET-P660265xx 38.29 9.24 30.74 8.62 265 ET-P660270xx 38.72 9.31 30.97 8.72 270 ET-P660275xx 38.92 9.35 31.32 8.78 275 ET-P660280xx 39.16 9.47 31.68 8.84 280 ET-P672285xx 44.65 8.58 35.86 7.95 285 ET-P672290xx 44.75 8.75 35.92 8.08 290 ET-P672295xx 44.92 8.82 36.02 8.19 295 ET-P672300xx 45.1 8.99 35.68 8.41 300 ET Poly, ET-P672305xx 45.18 9.04 36.23 8.42 305 ET-P672 ET-P672310xx 45.65 9.08 36.54 8.49 310 ET-P672315xx 45.75 9.12 36.81 8.56 315 ET-P672320xx 45.94 9.24 37.13 8.62 320 ET-P672325xx 46.31 9.28 37.28 8.72 325 ET-P672330xx 46.65 9.35 37.58 8.78 330 ET-P672335xx 46.83 9.47 37.9 8.84 335 Note: xx can cover one or multiple model following: WW/WB/BB/WWZ/WBZ/BBZ/WWG/WWGZ/WBG/WBGZ/BBZ/BBGZ/WWCO/WBCO/BBCO. 16 17