Installation Manual - Bosch Solar Energy
Contents
1. Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 1 of 13 Table of Contents OTE SII carsales nee canvas pup dece xin bsiges E bre 2 2 0 PHOTOVOLTAIC MODULES PRODUCT CODE ierit redet niente 2 S OMODULE OVERVIEW T 2 S MAINTENANCE m M 2 3 2 STORAGE UNPACKING AND HANDLING scatet adita bt hdd epa eter ense ttn uten 3 cil MEME M 3 4 0 MECHANICAL INSTALLATION 1 2 cete eet trennt pnt nui np tpe ui bnt nep 4 4 1 PEANNING ANDIDESIDN a s ntdirvairiakta Rak rax i iiaeiai neut iren edulis ever n RR r Cre DH Ure ID 4 42 MODULE INSTALLATION OPTIONS eericarenee ua Esr E E eE aE EENE a uenia 4 4 3 MODULE INSTALLATION USING CENTER MOUNTING BRACKETS crre 4 4 4 MECHANICAL INSTALLATION WARNINGS ccecce 4 5 0 ELECTRICAL INSTALLATION ctr asutec lunius onain aanne aate isi anaes aaea deca dian dere guias 6 5 1 PLANNING AND DESIGN M 6 52 MODULE WIRING tcc ce emo A E ec E E acedts 6 LEl eB pcm E 7 5 4 ELECTRICAL INSTALLATION WARNINGS cacao bui EEEE 7 6 0 DISCLAIMER OF WIP III sates serobeileeduttecteuciuenttns beni aft rcveetidtaliue gie iode annit aiaa a 8 7 0 MECHANICAL AND ELECTRICAL PARAMETERS AND SPECIFICATIONS 9 S 0 APRENDI itas E EAE E cine cues ed hemes E E EAE R EA dE 11 8 1 ssi EPIS REAT 11 B2 MODULE TICS TAT INS rt sexe vd vas ttis tutt euentu2. Bosch Solar Modules for safe electrical connections sound mechanical connections and freedom from shading and corrosion If dirt or debris buildup becomes excessive periodically clean the glass only with a soft cloth using mild non abrasive detergent and water When using mild cleaning liquids a neutral pH in the range of 6 0 to 8 0 is recommended Chemicals with pH less than 6 0 or greater than 8 0 should be avoided as it may damage the glass surface and or the AR coating Please consult with system designer to decide the cleaning and inspection frequency according to local environmental conditions Do not power wash or use harsh cleaning materials or objects such as scouring powder steel wool scrapers blades or other sharp instruments to clean the glass surface of the module Use of such materials will invalidate the product warranty WARNING Use caution when cleaning the back surface of the module to avoid penetrating the substrate materials Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 3 2 STORAGE UNPACKING AND HANDLING Packaged modules must be stored in a dry and ventilated area Packaged modules must not be exposed to rain snow hail or other environmental conditions that may compromise the packaging material and the modules Packaged modules must be on a
3. Voltage V 1000 W m 800 W m 400 W m 15 C 35 C 600 W m 200 W m 25 C 45 C Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 10 of 13 7 0 MECHANICAL AND ELECTRICAL PARAMETERS AND SPECIFICATIONS 7 1 c Si M 72 MODULE DETAILS c Si M 72 NA41126 Mono crystalline Modules 290 Wp 295 Wp 300 Wp 305 Wp TEMPERATURE COEFFICIENTS AND PARAMETERS ELECTRICAL CHARACTERISTICS Nominal Operating Cell Temperature NOCT C 46 2 Model 290Wp 295Wp 300Wp 305 Wp Temperature Coefficient of Pmax C 0 45 Rated Maximum Power Pmax W 290 295 300 305 Temperature Coefficient of Voc C 0 34 Open Circuit Voltage Voc V 45 0 45 2 45 6 45 8 Temperature Coefficient of Isc C 0 035 Short Circuit Current Isc A 8 70 8 80 8 90 9 00 Operating Temperature C 40 to 85 Module Efficiency 14 9 15 1 15 8 15 6 Maximum System Voltage V 1000 UL amp IEC VERTS arian 36 2 36 4 36 6 36 8 Limiting Reverse Current A 9 10 Maximum Power Point Current lj 8 01 8 10 8 20 8 29 Maximum Series Fuse Rating A 15 All electrical data at standard test conditions STC 1000W m2 AM1 5 25 C Power Range W 0 45 Electrical characteristics may vary by 5 and power by 0 5W Temperature coefficients may vary by 10 Listed specifications are subject to change
4. cutus penna bap aa 12 XXe is c 12 8 4 PRE MOUNTED CABLES AND CONNECTORS co sisocsenssnstooneniscanesknnitinacnsusveniencnsisiseesbtetinsptunstaabes 13 Customer Service Bosch Solar Energy Corporation 2988 Campus Dr Suite 100 San Mateo CA 94403 USA Phone 1 650 356 3100 Fax 1 650 525 0830 sales se us bosch com www bosch solarenergy com Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 1 0 INTRODUCTION The purpose of this guide is to provide general information regarding the proper installation and handling of Bosch Solar Energy photovoltaic modules that serve residential commercial and industrial segments System design construction and commissioning should be performed by qualified personnel only To ensure system integrity designers installers and operators must meet all mechanical and electrical requirements for the system and its components It is the responsibility of the system designer and installer to ensure that all codes and requirements are followed as well Please review all the sections that pertain to proper installation of modules listed in this Guide The instructions detailed in this guide must be followed throughout the module s lifetime deployment If you need additional information about the safe proper use and han
5. on Bosch Solar Energy approved extrusion and hardware For module loads higher than 2400 Pa module clamps and hardware must be pre approved by Bosch Solar Energy 4 4 MECHANICAL INSTALLATION WARNINGS e Installation and maintenance should be performed by qualified personnel only e Use insulated tools during installation troubleshooting and maintenance of photovoltaic modules Installers should adhere to all applicable local regional and national codes and regulations when designing and constructing the photovoltaic system e Do not stand or walk on any surface of the modules Do not place any objects or load on the surface of the modules e Precaution should be taken to avoid damage to the glass surface with anti reflective coating due to improper handling during installation Mechanical structures should not contact the module backsheet under any expected load conditions Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 e Additional mounting holes may not be drilled in the frame glass or backsheet Ensure that frame weep holes see Appendix 8 1 are not obstructed by the mechanical installation MOUNTING CONFIGURATIONS MODULE ILLUSTRATION LOAD PARAMETERS DETAILS Mounting Color Code Mounting Hole Location E Module Rail Bolt Mount Locati
6. side of the module or with four clamps over the front side e Depending on the desired load capability of the array modules may be mounted either perpendicular or parallel to the structure rails Clamps can be mounted anywhere inside of the safe mounting range for each case illustrated below referring to chart showing clamp and bolt mounting locations e f using bolts four mounting holes are provided on the rear side the module frame as shown in Appendix 8 1 Use a stainless Steel bolt stack no smaller than 14 20 or M6 with two flat washers and a locking washer as shown in Appendix 8 2 e To ensure an adequate clamping area all clamps used must comply with the minimum clamping dimensions specified in Appendix 8 3 All fasteners used to fix the modules with clamps should be stainless steel and no smaller than 14 20 or M6 e To provide adequate fixing or clamping force torque the minimum recommended fasteners to 13 6 16 3 Nem 10 12 ft Ib e For all cases the area of the supporting structure in contact with rear side of the module must comply with the minimum support dimensions specified in Appendix 8 3 All other structural dimensions such as clamp and rail thickness should be sized appropriately for the intended site load 4 3 MODULE INSTALLATION USING CENTER MOUNTING BRACKETS Modules may also be mounted using center clamps as shown in Appendix 8 2 for use with trackers Module clamps for center mounting must be based
7. without prior notice IV CURVES AT MULTIPLE IRRADIANCES 25 C IV CURVES AT MULTIPLE TEMPERATURES 1000 W m 9 10 Current A Current A Voltage V Voltage V 1000 W m 800 W m 400 W m 15 C 35 C 600 W m 200 W m 25 C 45 C Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 11 of 13 performance reliability and fire safety codes L d d A m SECTION J J i SIDE FRAME PROFILE JUNCTION 1 BOX 7 LI M NE PLATE L EN l E J J SECTION K K CONNECTORS END FRAME PROFILE B G v n i ZA 14 0 i a l 8 0x14 0 28 0 m 6 0 MOUNTING SLOTS 4PLACES S i UM 20 0 94 5 GROUNDING HOLES DETAIL M 6PLACES A MOUNTING HOLE K 3 Y CAN A N AL FRAME WEEP K QUTOUTS ALL 4 CORNERS PHYSICAL PARAMETERS Module Dimensions Mounting Hole Spacing A 990 39 0 F 950 Oz B 1 976 ras G 1 188 46 8 D 30 132 H 1 000 39 4 E 22 0 9 Cable length Tolerance 2 5 mm 4 52 5 mm Dimension tolerance range for A 3 mm B 3 mm and C 0 3 mm Module Weight kg Frame Material Glass mm Please note the information in this instal
8. 000 V DC UL 1000 V IEC 1000 V DC UL 1000 V Temperature rating 40 C to 90 C 40 C to 85 C Qualification TUV 2PFG amp UL PV wire EN 50521 amp UL for PV sys female part no S418 21B 053 male part no S418 22B 053 Copyright 2012 Bosch Solar Energy Controlled Document Bosch Solar Energy Corp Void if Printed or Electronically Duplicated Information contained herein may not be revealed or disclosed to unauthorized persons or sent outside Bosch Solar Energy without prior authorization Match printed version to documentation database Bosch Solar Energy Corp 2988 Campus Drive Suite 100 San Mateo CA 94403 USA 1 650 356 3100 www bosch solarenergy com Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp
9. allation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 4 of 13 4 0 MECHANICAL INSTALLATION 4 1 PLANNING AND DESIGN Before installation check to ensure all sub structure will accommodate expected system loads This includes but is not limited to roof foundations mechanical structure and mechanical connections e For roof installations utilize a fire resistant roof covering rated for the application e Mechanical structures should not contact the module backsheet under any expected load conditions e Consider the following factors during system design which will influence performance a Bosch solar modules produce the most power when they are pointed directly at the sun and should be tilted for optimum system performance b Proximity to obstructions such as walls buildings trees groundcover snow cover or dust and debris that have the potential to shade or damage the modules c Elevated temperatures will decrease energy yield so designs should ensure adequate airflow across the back of the module d Allow a minimum spacing of 10 mm between modules for thermal expansion 4 2 MODULE INSTALLATION OPTIONS FOR MOUNTING LOCATIONS For mounting locations for clamps or bolt for specified load please refer to Table on page 5 e Each module should be mounted using four bolts through the mounting holes on the rear
10. and modules e Always wire modules so that proper polarity is maintained Avoid placing excessive tension on the cables There is no limit to the maximum number of series strings that can be combined in parallel However when doing so each string must include overcurrent protection with a maximum rating of 15A Bosch Solar Energy recommends the use of DC rated fuses or overcurrent protection devices with the appropriate maximum voltage rating e Do not connect modules directly to a parallel bus The cross sectional area of cable and the connector type must be selected to align with the overall system design and should include the maximum short circuit current of the system maximum operating temperatures and cable run lengths For field connections use at a minimum 12 AWG 4 mm wires insulated for a minimum of 85 C Use copper wire only Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 5 8 GROUNDING The module frame includes several labeled grounding holes These holes may not be used for any other purpose Bosch Solar Energy recommends a Burndy BGBL 4 AL lay in lug for grounding Only Negative grounding circuits negative polarity to ground shall be used within the array design Attach the grounding lug to the frame as follows Step 1 Use stainless steel hardwa
11. ar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 7 0 MECHANICAL AND ELECTRICAL PARAMETERS AND SPECIFICATIONS 7 1 c Si P 72 MODULE DETAILS c Si P 72 NA21126 Multi crystalline Modules em uS 285 Wp LIS 2E Wip TEMPERATURE COEFFICIENTS AND PARAMETERS KOER EE OA ESENCAN OAO 47 2 Temperature Coefficient of Pmax C 0 45 Temperature Coefficient of Voc C 0 83 Temperature Coefficient of Isc C 0 066 Operating Temperature C 40 to 85 Maximum System Voltage V 1000 UL amp IEC Limiting Reverse Current A 8 40 Maximum Series Fuse Rating A 15 Power Range W 0 5 Temperature coefficients may vary by 10 ELECTRICAL CHARACTERISTICS 280Wp 205 Wp 200Wp 205 Wp Rated Maximum Power Pmax W 280 285 290 295 Open Circuit Voltage Voc V 44 0 44 4 44 7 45 1 Short Circuit Current Isc A 8 60 8 65 8 71 8 95 Module Efficiency 14 3 14 6 14 8 15 1 Maximum Power Point Voltage Vinpp V 34 7 35 0 35 4 359 EERON E ROOTA 3 08 8 16 8 20 8 36 All electrical data at STC 1000W m AM1 5 25 C Electrical characteristics measurement tolerance is 5 and power is 0 5W IV CURVES AT MULTIPLE IRRADIANCES 25 C IV CURVES AT MULTIPLE TEMPERATURES 1000 w m 9 10 7 8 6 s amp 6 E e o 8 4 3 2 2 1 N 0 0 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 Voltage V
12. ctrical arcing which may result in burns fires or other problems Modules connected in series should not be disconnected under illumination Always use a wire management system that keeps wires and cables out of direct contact with edge surfaces which could cut or damage the insulation Do not allow wires to rest on the ground or roof surface The module junction box should not be opened or modified in any way in the field Additional grounding holes may be added only with the express written consent of Bosch Solar Energy New grounding holes must be drilled using an approved drill jig avoiding damage to the module glass backsheet or other module components Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 Do not use mirrors lenses or other techniques to magnify or concentrate additional light on the module 6 0 DISCLAIMER OF LIABILITY The information in this manual is based on Bosch Solar Energy s knowledge and experience and is believed to be accurate However all information in this manual without exception including recommendations and specifications does not constitute a warranty expressed or implied Bosch reserves the right to change the manual the module or specifications without prior notice The product warranty shall be VOID if handling and installatio
13. d Clamp Mount location A 394 mm Clamp mount allowable range B 248 mm C 444 mm Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 5 0 ELECTRICAL INSTALLATION 5 1 PLANNING AND DESIGN e All modules are manufactured with a sealed junction box and pre attached cables and locking connectors These components should not be modified or tampered with in any way NOTE Installers should ensure that the polarized locking connectors are from the same supplier when connected on the same string We do not recommend mixing polarized interlocking connectors from different manufacturers including connections at the inverter combiner boxes and modules e Ensure connectors are clean and dry before establishing connection Ensure that all wire fusing and disconnects are appropriately sized for the system design according to national regional and local codes Electrical characteristics are within plus or minus 5 of rated values for Isc Voc Impp and Vmp Pmax ranges between 0 5W at standard test conditions STC However modules will operate under conditions which may be significantly different than STC Bosch Solar Energy suggests multiplying specified ratings by a minimum of 1 25 or more when specifying the system and balance of system components Refer to local c
14. dling of Bosch photovoltaic module products please contact Bosch Solar Energy 2 0 PHOTOVOLTAIC MODULES PRODUCT CODE c Si P 72 NA21126 Multi crystalline Modules 280 Wp 285 Wp 290 Wp 295 Wp c Si M 72 NA41126 Mono crystalline Modules 290 Wp 295 Wp 300 Wp 305 Wp 3 0 MODULE OVERVIEW Bosch Solar Energy Photovoltaic modules consist of a series of electrically interconnected crystalline silicon solar cells that are sealed within a laminated sheet of tempered glass superstrate and EVA back sheet substrate These laminates are secured inside an aluminum frame to provide rigidity and a means for attachment to mounting sub structures The frames should not be modified or removed Tempered glass may have AR coating e Photovoltaic modules are designed and constructed for outdoor use Do not submerge modules in water at any time e The front and back of each module is labeled with a product bar code Do not cover remove or deface these labels This may be required for product identification e Damage to the glass surface or the anti reflective coating can impact the power output and overall efficiency of the system Scratches handling marks or any damage to the glass surface must be avoided e For best performance and to avoid potential issues keep the front side of the module clean and free of obstructions including covers tape adhesives paint and debris 3 1 MAINTENANCE Check modules glass and frames for damage Regularly inspect all
15. iance with all applicable regional and local electrical codes or other national or international electrical standards Use insulated tools during installation troubleshooting and maintenance of photovoltaic modules Wear suitable protection to prevent direct contact with module s electrical output and mechanical sharp edges Cover the front of the modules with an opaque material to stop production of electricity when installing or working with a module or wiring Modules connected in a series should not be disconnected under illumination Disconnecting modules under illumination may cause electrical arcing which may result in burns fires or other problems Follow industry best practices when commissioning trouble shooting disconnecting or connecting a PV system Trouble shooting should include planning checking disconnecting cause seeking replacement and record keeping Do not install or handle the modules or their components when they are wet or during periods of high wind Do not attempt to disassemble repair or open any part of the module including junction box or sub components Do not artificially concentrate sunlight on a module Do not install or handle any broken modules If a module is broken or the back sheet is torn contact with the surface or frame can cause an electrical shock Do not wear rings jewelry watches or other metallic items while working with photovoltaic modules Please note the information in this inst
16. lation manual is preliminary and subject to change DETAIL L WEEP CUTOUT 029 Anodized Aluminum 3 2 Tempered ARC glass Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 12 of 13 8 0 APPENDIX 8 2 MODULE ILLUSTRATIONS Center Mount Option 8 8 CLAMP DRAWINGS MINIMUM CLAMP DEPTH MINIMUM SUPPORTING WIDTH Dimension INCH Module Clip Dimensions A 6 35 0 3 B 38 1149 Minimum Support Dimensions C 15 0 6 D 15 0 6 Please note the information in this installation manual is preliminary and subject to change 1 4 20 BOLT FLAT WASHER P MODULE FRAME A S n E Bm m S a ES FLAT WASHER E TN S H LA x H N N NA NM N RACKING STRUCTURE n og WASHER 7 4 20 NUT Bolt Stack Details T Z2 MWY ASO MINIMUM SUPPORTING DEPTH SUPPORTING SURFACE Copyright 2012 Bosch Solar Energy Corp Installation Manual Bosch Solar Energy c Si P 72 NA21126 c Si M 72 NA41126 13 of 13 8 0 APPENDIX 8 4 PRE MOUNTED CABLES AND CONNECTORS Mounting Configuration Pre mounted cables Pre mounted connectors Manufacturer BizLink Technologies http www bizlinktech com index html Type TUV PV1 F amp UL PV wire locking polarized connectors Cross section 4 0 mm 4 mm dia Max current 30 A at 85 C IEC 25 A and UL 20A Max system voltage IEC 1
17. n of the product does not conform to Bosch Solar Energy s written installation instructions or if the product has been reworked repaired or otherwise modified in a manner not previously authorized by Bosch Solar Energy in writing or if the product is installed in an environment for which it was not designed Bosch Solar Energy shall not be liable for special indirect consequential contingent or incidental damages related to or arising from the installation or use of the product by purchaser under any circumstances Bosch Solar Energy assumes no responsibility for any product application or use which is beyond Bosch Solar Energy s direct control Bosch Solar Energy does not accept responsibility and expressly disclaims liability for loss damage or expense arising out of or in any way connected to such installation operation or maintenance of the product International Product Certifications UL 1703 and Safety Class Il certifications ensure that Bosch solar products operate safely and comply with global electrical e Stringent outgoing quality acceptance criteria benchmarked to industry standards e UL1703 listed by CSA for Canada and US Fire Resistance Rating Class C Certification APPROVED PRODUCT ASSOCIATION Bosch Solar Energy Modules are certified by qp c zd y c US mcs B AJB T UT UL 1703 Certified Please note the information in this installation manual is preliminary and subject to change Copyright 2012 Bosch Sol
18. odes before planning and design of the system Determine the maximum number of modules connected in series using the following formula N Vmax Voc Where N equals the maximum modules in series Vmax equals the maximum system voltage please refer to module data sheet for actual Vmax rating as some models are rated for 1000 V UL and 1000 V IEC Voc equals the module open circuit voltage at coldest conditions for the site refer to local codes WARNING Installers should adhere to all applicable local regional and national codes and regulations when designing and constructing the photovoltaic system NOTE In colder climates it may be necessary to further reduce the maximum number of modules in series by using Voc at the minimum expected operating temperature 5 2 MODULE WIRING e The module includes wires and polarized locking connectors from the junction box on the back of the module The wires have sufficient length to connect to adjacent modules in either a portrait or landscape configuration Field replacement of connectors or cables must be avoided and it will invalidate the product warranty Polarized locking connectors of the same type and make are needed for all series string wiring The maximum operating temperature of wires and connectors should not exceed 85 C WARNING It is not recommended to mix connectors from different suppliers within the same string This includes connections at the inverter combiner boxes
19. ons FRONT VIEW t Clamp Mount Locations Fixed clamp location for 5400 Pa BACK VIEW front load Maximum Front Load 5400 Pa or 113 psi Maximum Rear Load 2400 Pa or 50 psi CASE 1 Structural rails running perpendicular to the length of the module should be fixed via bolts at the mounting holes between each long side frame or Clamps can be mounted at the Fixed Clamp Mount location as shown in the color code key Bolt Mount Locations FRONT VIEW Clamp Mount Locations Clamp mount allowable range BACK VIEW Maximum Front Load 5400 Pa or 113 psi Maximum Rear Load 2400 Pa or 50 psi CASE 2 Structural rails running parallel to the length of the module should be fixed via bolts at the mounting holes on each long side frame or Clamps can be mounted anywhere within the Clamp Mount Range as shown in the color code key X Fixed Clamp Mount Clamp Mount Locations Clamp mount allowable range Case 3 option 1 m BACK VIEW OR Case 3 option 2 BACK VIEW Maximum Front Load 2400 Pa or 50 psi Maximum Rear Load 2400 Pa or 50 psi CASE 3 Structural rails running perpendicular to the length of the module should be fixed via bolts at the mounting holes between each long side frame or Clamps can be mounted anywhere within the Clamp Mount Range as shown in the color code key O Clamp Mount Range Fixe
20. ppropriate provided pallets and must not be stacked more than two pallet high for storage Once the modules are opened store modules in a dry and ventilated room Modules should never be stored in a wet environment Upon unpacking do not carry a module by its wires or junction box Only carry a module by its frame with two or more people Precaution should be taken to avoid damage to the glass surface with or without anti reflective coating due to improper handling during storage or unpacking Keep all electrical contacts clean and dry All modules are manufactured with a sealed junction box and pre attached cables and locking connectors These components should not be modified or tampered with in any way Do not allow unauthorized persons near the installation site or storage area of modules Do not place modules on top of one another Do not place any load on the module or twist the module frame Do not stand step walk or jump on the module Do not drop or place objects on the modules such as tools Do not handle modules with bare hands and avoid scratches handling marks or any damage especially to the front glass of the module backsheet or electrical components Do not mark the modules with sharp instruments Do not leave a module unsupported or unsecured Do not modify module frames in any way 3 3 SAFETY The following safety guidelines and best practices should be followed All installations must be performed in compl
21. re Step 2 Place the grounding lug over the grounding hole on the exterior of the module frame Step 3 Place a star washer directly between the bottom of the grounding lug and the exterior surface of the frame Step 4 Place an M4 or 8 32 bolt through the lug star washer and frame grounding hole Step 5 Secure the lug to the frame using a flat washer split washer and M4 or 8 32 nut Step 6 Torque the bolt stack to approximately 1 5 Newton meters or 1 1 foot pounds to ensure the star washer scratches the anodized frame It should be noted that the Bosch 72 cell module frame profile has been evaluated for compatibility with the Daetwyler Clean Energy Modu Rack High Top and Eco Top mounting frame structure grounding systems Please refer to the Max Daetwyler Corporation Listing Constructional Data Report no 100618390LAX 002 from Intertek Testing Services NA 5 4 ELECTRICAL INSTALLATION WARNINGS Installation and maintenance should be performed by qualified personnel only Use insulated tools during installation troubleshooting and maintenance of photovoltaic modules Installers should adhere to all applicable local regional and national codes and regulations when designing and constructing the photovoltaic system Photovoltaic modules produce DC electrical energy from light When illuminated each module can have a DC potential of greater than 45 V and should be handled with care Disconnecting modules under illumination may cause ele
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