INSTALLATION MANUAL INSTALLATION MANUAL
Contents
1. Since sparks may be produced Do not install modules near equipment or locations where flammable gases can be generated or collected In case of fire DelSolar modules on the roof are likely to produce dangerous DC voltage and may have poten tial hazard even in the case of Low light intensity Modules being disconnected from the inverter Modules being partly or entirely destroyed When fire has been extinguished or for the duration of fire stay away from all elements of the PV system Have your installer perform the necessary steps to bring the PV system back into a safe condition Mechanical Installation The design and installation of photovoltaic systems shall be in accordance with the National Electrical Code NEC and the Canadian Electrical Code CEC To install the modules facing south in northern latitudes and north in southern latitudes for best power out put The modules should not be shaded at any time If the shade occurred on module surface it will result in lower power output or may result in permanent damage to the module Do not modify the PV module frames mechanically or chemically It will void the warranty Clearance between the module frame and mounting surface may be required to allow the cool ambient air circulating behind the module It is necessary for optimum module performance All fasteners nuts bolts washers screws etc must be stainless steel made unless otherwise specified it should2. zZ _ p rn ee nd Be er F en ee n DE NEE a e If modules are connected in parallel the total current is equal to the sum of individual module current e Connecting modules in parallel the wiring and connectors can become overheated at high current Use system wiring with suitable cross section and connectors that are approved for use at the maximum short circuit cur rent of the module The recommended cable is PV wire with a cross section of at least 4 mm e Maximum number of series connected modules lt Maximum sysytem voltage Voc of the module at STC e f fuse is used number of parallel connected modules lt Maximum fuse rating Isc of the module at STC Mm NOTE It is recommended that paralleling modules be performed using an external junction box However a small number of modules may be g paralleled using the junction box on the back of the modules Contact gt your local seller for more information Illustration A Series for more voltage Illustration B Parallel for more current Module Wiring e Each module has two 12 AWG standard 90 C sunlight resistant output cables each terminated with plug amp play connectors e The cable is suitable for applications where wiring is exposed to the sunlight directly We recommend that all wiring and electrical connections comply with the National Electrical Code NEC e For field connections use the minimum 12 AWG copper wires insulat
3. 4 Label Ea gt q mm q gt lt a 8 x Mounting Hole l Module Back Side i di Module Back Side Diameter of 9 mm Normal Installation Heavy Snow or Wind Load b em lt 2400 Pa lt 5400 Pa N y Fig 1 1 Fig 1 2 Fig 1 3 DelSOlar Bolt ME Stainless steel Fam Langer side Spring washer Stainless steel Flat washer Stainless steel 140 mm En Supporting structure Ei Flat washer Stainless steel mm m Spring washer Stainless steel Thickness 3mm Nut Stainless steel Fig 1 4 Fig 1 5 Method 2 Attachment Using Clamps e The modules may be mounted using clamps Clamp A and Clamp B designed for solar modules as shown in Fig 2 1 e Modules must be mounted at 4 symmetrical quarter points by the means showed in Fig 2 2 amp Fig 2 3 e The clamp position could be in a range as shown in Fig 2 4 e The clamps must be attached to a supporting structure using M8 stainless steel hardware all fitting compo nents must be corrosion proof material e The applied torque is about 8 N m e The modules are supported parallel to surface of the building wall or roof Sufficient clearance recommended is 140 mm between the module frame and mounting surface of the wall or roof is required to prevent wiring damage and allow cool air to circulate behind the module Clamp A amp mm AA Solar module yy Mounting Structure
4. use corrosion proof fixing material The module mounting structure must be made of durable corrosion resistant and UV resistant material There are two approved methods to mount DelSolar modules to the supporting structure For all mounting methods a minimum gap between the modules of 5 mm is required to allow for thermal expansion Method 1 Attachment Using Screw Each long side frame has 4 mounting holes with 9 mm diameter used to secure the module to supporting structure as shown in Figure 1 1 For normal installation modules must be securely attached to the mounting structure using at least 4 symme trical mounting holes as shown in Figure 1 2 for normal installation If additional wind or snow loads are anti cipated for this installation lt 5400 Pa additional mounting holes are also used as shown in Figure 1 3 The module frame must be attached to a supporting structure using M8 stainless steel hardware together with spring washers and flat washers all fitting components must be corrosion proof material as shown in Figure 1 4 The applied torque is about 8 N m Here the standoff method or the rack method is recommended The recommended stand off height is 140 mm as shown in Figure 1 5
5. DelSOlar INSTALLATION MANUAL IEC Version DelSOlar Content General information 1 Safety precaution for installing solar PV system 1 Fire safety Mechanical installation Electrical installation Commission amp Maintenance oO OO A N N Disclaimer of Liability IMPORTANT Please read this manual carefully before installing the modules Non compliance with these instructions may void the modules warranty General Information This manual contains information regarding the installation and safe handling of DelSolar photovoltaic PV mod ules All instructions should be read and understood before attempting to install If there are any questions please contact your dealer or DelSolar for further information The installer should conform to all safety precautions in the manual when installing modules Before installing a PV system the installer should become familiar with me chanical and electrical requirement for the PV system All installations must be performed in compliance with all applicable regional and local codes or other national and international electrical standards Keep this manual in a safe place for future reference Safety Precaution for Installing Solar PV System DelSolar modules are qualified for Application Class A Hazardous voltage greater than 50 V DC or hazardous power applications greater than 240 W where general contact access is anticipated Modules qualified for safety under I
6. EC 61730 1 IEC 61730 2 and within this application class are considered to meet the require ments for Safety Class Il Installing PV systems should be performed only by qualified or licensed experts Ensure that the DelSolar modules are fastened to proper mounting systems designed for appropriate mechani cal loads resulting from wind and snow and the proper weight of the modules Completely cover the module with an opaque material during installation to keep electricity from being gener ated Be very careful when disconnecting wires connected to PV modules that are exposed to sunlight an electric arc may result Such arcs may cause burns may start fires and may create problems Artificially concentrated sunlight shall not be directed on the module or panel Use only insulated tools that are approved for working on electrical installations Each module shall be provided with the maximum series fuse as specified Routine maintenance of a module or panel shall not involve breaking or disturbing the bonding path Do not attempt to disassemble the module or remove any part of module Do not remove the attached nameplate or components Do not stand or place heavy objects on modules Do not drop sharp objects on modules Do not lift or transport modules by grasping the junction box or electrical leads Do not set the module down hard on any surface Del S Ol ar u Do not perform any work if the cables connectors or junction box ar
7. I ar ya e The grounding wire must be properly fastened to the module frame to as sure good electrical contacts e Each long side frame has 3 grounding holes with 4 mm diameter and marked with a symbol G or 3 adjacent to their location for ground contact The location of grounding holes are shown on Fig 3 1 Label e Grounding wires must be connected to the module frame at one of these locations e Great care should be exercised to ensure that corrosion caused by the grounding means is avoided e Corrosion can increase the resistance of the grounding connection on the module or can even cause the grounding connection to fail entirely e Corrosion can be caused by the effects of weather humidity dirt and so on Corrosion can also be caused when two dissimilar metals contact each other galvanic action 6 x Grounding Hole e All grounding hardware nuts bolts washers screws etc must be stain Diameter of 4 mm less steel unless otherwise specified it should use corrosion proof fixing material as shown in Fig 3 2 amp Fig 3 3 e The grounding wire should not be smaller than 12 AWG Fig 3 1 e The grounding wire should be 2 meters in length multi conductor and rat ed of 105 C and 600V e Recommended torque value is 2 3 N m 20 4 Ib in e There are two approved methods to ground DelSolar modules Method 1 Grounding Using Bolt and Nut
8. Rail 42 50mm Roof depend on module height Metal clamp A 2 places Metal clamp B 2 places Clamp B l Thickness 23mm l Fig 2 1 Fig 2 2 DelSOlar Metal clamp B Nut M8 Between modules Fig 2 3 D6P_A1A D6P_A2A D6P_A3A D6P_A5A Module Mounting Structure Rail End of module D6P_B1A D6P_B2A D6P_B3A D6P_B5A D6M_A1A D6M_A2A D6M_A3A D6M_A5A D6M_B1A D6M_B2A D6M_B3A D6M_B5A Bolt M8 Unit mm mounting area oe mounting area Fig 2 4 Electrical Installation Grounding Metal clamp A 450 650 550 1050 300 1250 300 1150 300 e All module frames and mounting racks must be properly grounded in accordance with respective national electrical code and local authority e A bolt screw or other parts used for bonding purposes within a module or panel shall not be intended for securing the complete device to the supporting surface or frame e To ground the frame of the module or array to avoid the hazards of electric shock and fire e Bonding shall be by a positive means such as clamping riveting bolted or screwed connectors welding sol dering or brazing If the bonding means depends upon screw threads two or more screws or two full threads of a single screw must engage the metal e The array frame shall be grounded in accordance with NEC requirements for grounding solar electrical system e The module frame must be properly grounded Del S N
9. e To the grounding hole secure the grounding wire with stainless steel hardware consisting of bolt spring washer flat washer cup washer star washer and nut as shown in Fig 3 2 e Length of bolts should not be more than 25 mm in order to avoid contacting the back sheet of module e The use of cup washer also called terminal cup washers is to prevent the grounding wire slipping out from under the screw head and or the flat washer e To make sure the cup washer is placed between the wire and module frame e Choose an adequate size for the cup washer and flat washer so the wire is fully clamped between them e The star washers must be used to make the electrical connection between grounding hardware and module frame by scraping off the anodized film of Al frame DelSOlar Nut Stainless steel Flat washer Stainless steel T Star washer Stainless steel Ground hole diameter 4mm Flat washer Stainless steel N nn Ground wire 212AWG aut Wound around the bolt Cup washer Stainless steel Frame Longerside Spring washer Stainless steel Length 25mm gt L 16mm du Bolt M4 Stainless steel Fig 3 2 Method 2 Grounding Using Grounding Lug Laminate Frame er Longer side Nut Stainless steel Ze Star washer Stainless steel gd Flat washer Stainless steel Lug Bolt M4 Stainless steel Wire insert Setsc
10. e wet due to the risk of electrical shock Do not work in rain snow or windy conditions The electrical characteristics are within 10 percent of the indicated values of Isc Voc and Pmax under stan dard test conditions irradiance of 1000 W m AM 1 5 spectrum and temperature of 25 C 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 Refer to Section 690 8 of the National Electrical Code of an additional multiplying factor of 125 percent 80 percent de rating which may be appli cable Fire Safety DelSolar modules are rated as Fire Class C according to UL 790 Standard To use components such as earth ground fault circuit breakers fuses and circuit breakers as required by local authority in the PV system for fire prevention The fire safety of building may be affected by the roof construction and installations Improper installation may cause hazards in the event of fire Consult with local authority for guidelines and requirements for building or structural fire safety For roof installation PV modules should be mounted over a fire resistant roof covering which is rated for the application
11. ed for a minimum of 90 C and sunlight resistant as well e According to IEC 60189 the insulation material used for internal wiring should have a temperature rating of minimum 90 C e Wire Type PV module interconnections should be 90 C wet rated conductors An allowable wire type is using USE 2 single conductor cable and PV wire for exposed applications DelSOlar a Commissioning amp Maintenance All work in commissioning and maintenance of a system must be performed by a qualified PV technician Bypass diode e Modules have bypass diodes integrated in the junction box and are wired in parallel with series string In the unlikely event of diode failure it is recommended to contact with DelSolar or local agent for checking replac ing bypass diodes e Be cautious of electricity shocks while commissioning and maintaining the solar power system Testing e Test all electrical and electronic components of the system before commissioning Maintenance e Clean the module glass when it s dirty use water and a soft sponge or cloth for cleaning A mild non abrasive cleaning agent can be used to remove sticky dirt e Check the electrical and mechanical connections regulatory to verify they are clean secure and undamaged Disclaimer of Liability e The use of this manual the installation conditions or methods operation use and maintenance of PV modules are beyond DelSolar s control DelSolar does not accept responsibilit
12. rew Fig 3 3 e To select a grounding lug listed for direct burial and outdoor use tin plated solid copper lay in lug with a stainless steel set screw capable of accepting a 4 12 AWG copper conductor e g ILSCO GBL 4DBT Burndy CL50 1TN e Length of bolts should not be more than 20mm in order to avoid contacting the back sheet of the module e The star washers must be used to make the electrical connection between grounding hardware and module frame by scraping off the anodized film of Al frame e To the grounding hole secure the lug with stainless steel hardware consisting of bolt flat washer star washer and nut as shown in Fig 3 3 Series and Parallel Wiring e Modules can be wired in series to increase voltage Connect wires from the positive terminal of one module to the negative terminal of the next module Illustration A as below shows 4 modules connected in series e f modules are connected in series the total voltage is equal to the sum of the individual module voltage e The maximum open circuit voltage of the system must not be greater than the specified maximum system voltage of the module to increase voltage CAUTION Do not connect modules with wire terminations in series DelSOlar man e To connect modules in parallel to increase current Connect wires from the positive terminal of one module to the positive terminal on the next module Illustration B as below shows 4 modules connected in parallel
13. y and expressly disclaims liability for loss damage or expense arising out of or in any way connected with such installation operation use or mainte nance e No responsibility is assumed by DelSolar for any infringement of patents or other rights of third parties which may result from use of the PV modules No license is granted by implication or under any patent or patent rights e This manual information is based on DelSolar s knowledge and experience and is believed to be reliable Such information including product specification without limitations and suggestions do not constitute a warranty expresses or implied DelSolar reserves the right to change the manual the PV product the specification or product information sheet without prior notice
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