AC Unison Installation Guide PM245PA2

AC Unison Installation Guide PM245PA2

BenQ Solar AC Unison Solar Power Systems Installation guide Table of Contents 1. AC Unison Solar Power System Overview.2 2. Quick Setup.3 2.1 AC Unison Module... 3 2.2 CDD....... 8 2.3 Solar Monitoring System... 17 3. Notice and Safety Instructions...19 3.1 Safety Instructions for AC Unison Modules..... 19 3.2 Safety Instructions for CDD 20 3.3 Miscellaneous Instructions........ 20 3.4 Mounting Notices.... 21 3.5 Grounding Notices.......... 21 Appendix A. Micro-Inverter Specification.22 Appendix B. CDD Specification.23 Appendix C. Grounding.24 Appendix D. Module Installation-Mounting.25 2013-10-21 (PM245PA2) 1

1. AC Unison Solar Power System Overview The BenQ Solar AC Unison Solar Power System consists of three major components, BenQ Solar AC Unison Modules, BenQ Solar CDD (Concentrator Data Device) and BenQ Solar Monitoring System. The following diagram illustrates a typical configuration at a residence. Please carefully read through this installation guide before installation. 1 BenQ Solar AC Unison modules. 2 The BenQ Solar CDD communicates with AC Unison modules via IEEE 802.15.4. 3 Ethernet cable or WiFi connecting the CDD to the network router enables the CDD to upload performance data to the BenQ Solar Monitoring System. The BenQ Solar AC Unison module represents the latest advancements in PV system safety for both the installer and system owner. AC Unison modules are shipped to the installer with the micro-inverter factory-installed on an AUO-manufactured photo-voltaic solar module. The attached micro-inverter shields the installer, service provider, and module owner from exposure to the potentially lethal DC voltages produced when multiple DC modules are connected in series. AC Unison modules are quickly installed by plugging each module's fully insulated AC power cord into the insulated cord of the neighboring module. The reduced risk has the added benefit of reducing the overall installation and maintenance time. AC Unison modules also improve the energy production of the solar array. Each module has its own independently operating inverter, and therefore is controlled by its own Maximum Power Point Tracker (MPPT). Unlike PV arrays with a centralized inverter, the overall production of an AC array is not governed by the lowest producing module. This means that while one or more modules might have limited or no production due to shading, soiling, or malfunction, the remaining modules continue to produce at peak output levels. The BenQ Solar CDD is a gateway device that uses ZigBee Communications (IEEE802.15.4) to collect status and performance data from AC Unison modules. Using broadband Internet, the CDD then forwards the collected data to the Solar Monitoring System at five minute intervals. When necessary, the CDD automatically downloads and installs enhancements, which can include defect fixes, to the software on the CDD or, on rare occasions, to the firmware on the micro-inverter. No manual intervention is required during the update process. The BenQ Solar Monitoring System is a web-base data management system that enables module owners, installers, distributors and manufacturers to register solar systems, create and view module layout diagram, monitor and export performance data for both site and individual module, and update system information. 2013-10-21 (PM245PA2) 2

2.1 Quick Setup - AC Unison Module This section contains the essential procedures for installation of BenQ Solar AC Unison modules. Before following the steps described here, it is important to carefully read through the entire Installation Guide. The voltage ratings of AC service panels MUST be within the proper range. 230 Volts AC Single Phase L to N 207 to 253 2 VAC (Follow local codes) Step 1. Check Components Please ensure you have the following components: 4 3 2 5 1 AC Unison Module 1. DC to AC micro-inverter 2. DC Junction Box 3. AC Cable 4. Male AC Connector 5. Female AC Connector 6 7 8 9 10 11 12 13 14 AC Unison System Accessories 6. T-Junction Brackets *12 7. T-Junction Bracket Screws *24 8. Clips *24 9. AC Transition Cable (5m) *1 10. AC Extension Cable (2m) *1 11. Unlock Tool *1 12. AC End Cap *1 13. CDD *1 14. Manual book *1 Note: Different solution packages may contain different quantities of accessories. 2013-10-21 (PM245PA2) 3

Step 2. Layout Planning Choose one of the following layouts that best suits the rooftop. 1-Row Layouts 2-Row Layouts (*) 3-Row Layouts *: The additional accessories are required. 2013-10-21 (PM245PA2) 4

Step 3. Module Preparation 3.1 Attach the T-junction bracket to the module frame with the provided M4 screws. 3.2 Attach the T-junction cable to the T-junction bracket. 3.3 Secure AC cable with the provided cable clips. 3.4 Tear off the EDDMID sticker on the micro-inverter and place it on the System Layout Table. 3.1 3.2 3.4 3.3 Place serial number stickers appropriately on the layout table. This will be helpful in the future troubleshooting. 2013-10-21 (PM245PA2) 5

Step 4. Module Installation 4.1 For the first module in the string, use a transition cable to connect the AC cable to a transition box. 4.2 Connect AC cables between neighboring modules. Press firmly until an audible click is heard. 4.3 For multi-row layouts, use an Extension cable to bridge module rows. 4.4 For the last module in the string, seal the AC connector with an End cap. 4.2 4.1 4.3 4.4 (Care must be taken to ensure all cables are secured with appropriate cable management equipments, and that the polarities of T-Junction cables are correct.) Important: If you have any question during installation, please contact your distributor. 2013-10-21 (PM245PA2) 6

BenQ Solar AC Unison System Layout Table System Installer: Site of Installation: Date of Installation: String A String B String C 1 2 3 4 5 6 7 8 9 10 11 12 Important Due to AC cable constraints, do not exceed twelve AC Unison modules in one string. The first module of each string (e.g. A1 and B1) should be connected to the transition box, whereas the last module of each string must be sealed with the supplied end cap. - Please Print This Page - 2013-10-21 (PM245PA2) 7

2.2 Quick Setup - CDD This section contains the procedures for installation of BenQ Solar CDD before following the steps described here, it is important to carefully read through the entire installation guide. CDD Front View WiFi Antenna Status LED Radio Antenna LCD Display Button Pad Up Down Esc Enter UP & DOWN are used to move around inside a menu or to increase/decrease the settable values. ESC is used to return to the previous menu or to cancel a selection. ENTER is used to access the desired submenu or to confirm an entered value/parameter. CDD Bottom View Ethernet Port RS485 Port (Not Used) GoGo Relay (Not Used) 5V Power Supply Port Note: This section must remain accessible after installation.

Step 5. CDD Installation & Instrument 5.0 Note that walls in reinforced cement and surfaces covered in metal (doors, surfaces, etc.) can markedly reduce the reach of radio waves. Therefore, it is vital to select a location with good signal reception and close to power socket. Please refer to the Troubleshooting guide for more information. 5.1 CAUTION: If you are unsure about signal reception, please drill holes only after completing Step 7. Make the 2 holes necessary, using a drill with a 5 mm diameter bit. The depth of the holes must be around 30mm. Insert plugs in the holes and tighten the countersunk screws. 5.2 Fasten the CDD by putting the head of the screws in the 2 holes on the back. 5.3 Connect the 5V power port to a socket with the supplied power adapter. The status LED should turn green and the LCD should display BenQ Solar. Note: In order to strengthen the communication signal between modules and the CDD, the CDD must be placed close to the rooftop or the installation location, alternatively the extension cable for Radio Antenna can be purchased (RP-SMA connector) from a local appliance shop. 3rd Floor: Most recommended! Short distance and minimum of interfering elements 2ndFloor: Possible signal drops, water systems, radiators, microwave in kitchen. 1st Floor: Long distance, tech gear, water, concrete/brick layers Not recommended position for CDD. 2013-10-21 (PM245PA2) 9

Operating Menu Basic Setting and Related Information General Information (Dynamic Screen) Web Server IP xx.xx.xx.xx MAC Address WiFi XXXXXXXXXXXX Tot Output Power Subnet Mask xxxx.xx W xx.xx.xx.xx IP Gateway Total Energy xx.xx.xx.xx Primary DNS xxxx.xx Wh xx.xx.xx.xx Alarms Status No Alarm Press any key Secondary DNS xx.xx.xx.xx WiFi Enabled Yes > WiFi Enabled Yes WiFi Enabled No HH:MM:SS DD/MM/YY WiFi AutoConnect Yes > WiFi AutoConnect Yes WiFi AutoConnect WiFi Network Web Server No Web Server Web Server Connected Reset Password? Are you sure? Done! CDD Login CDD Login CDD Login Reset Password? Are you sure? Done! CDD Admin CDD Admin CDD Admin Reset Password? Are you sure? Done! WiFi SSID XXXXXXXX 2013-10-21 (PM245PA2) 10

CDD Advanced Setting Menu Tot Output Power Total Energy xxxx.xx W xxxx.xx Wh Press UP and DOWN together for 3 seconds and then input the password 0010 to access Statistics > Total Energy xxxx.xx Wh Inverter data Total EDX Input Voltage xx.xx V Output Power xxx.xx W > SN: XXXXXX DSP Release xxxx.xxxx Set Password 0010 View Information > PN xxxxxx SN xxxxxxxxxxxxxxxx Firmware Rel. > Date DD/MM/YY Time HH:MM:SS Application FW x.x.xx Bootloader FW XXXX WiFi Firmware x.x RF Firmware x.x Micro Release xxxx.xxxx Model ID MICROINVERTER MAC Address XXXXXXXXXXX Output Current x.xx A Input Current x.xx A Events NO ALARM! Output Voltage xxx.xx V Frequency Change Language > Select Language English Select Language Italian xx.xx Hz Temperature xx.xx C Set Date/Time Set Date/Time > HH:MM Set TimeOut Change Display Timeout Off Settings > > Set TimeOut Off ~ 10mins Select Network WiFi Select Network Select Network WiFi > Ethernet DHCP Enabled DHCP Enabled Yes > Yes Web Server IP DHCP Enabled Network > xx.xx.xx.xx > Mask Address xx.xx.xx.xx > No IP Gateway xx.xx.xx.xx > Primary DNS xx.xx.xx.xx > Secondary DNS xx.xx.xx.xx > 2013-10-21 (PM245PA2) 11

Step 6. CDD Network Configuration To enable BenQ Solar Monitoring System, the CDD must be connected to a 10/100 Base-T network router using either: 6A - Wireless connection (WiFi) or 6B - Cabled connection (Ethernet cable) 6A - Wireless Connection (Internet via WiFi network) WiFi Router 6A.1 WiFi signal detection Installation WiFi Scanning..v Installation (XX) WiFi Found [XX] Open [ ] SAMPLE HOUSE... 6A.2 WiFi connection Enter Passkey xxxxxxxx Connecting to WiFi [XX]... Connecting to WiFi [XX] Done! WiFi Enabled Yes > 6A.3 Auto-connection configuration The CDD automatically scans nearby WiFi signals. Please see Troubleshooting guide for more information. (Note: only 802.11b/g are compatible) The scanning process takes less than 1 minute to complete. Once completed, the number of WiFI networks found will be shown on the display (XX). Press ENTER to access the selection menu of WiFi networks. The first line shows the number of network [XX], the type of protection (open, WPA, WPA2) and signal strength. The second line shows the name (SSID) of the network. (Note: CDD does not support WEP authentication.) (Skip this step if your network does not require a passkey) Use UP/DOWN to scroll through the characters and press ENTER to confirm. Press ESC to delete character. (CDD automatically connects to OPEN networks) After entering the passkey, press ENTER twice to make network connection. Network connection takes about 30 seconds to complete. Once completed, the CDD will display WiFi Enabled message, press ESC to exit this menu. WiFi AutoConnect Yes > WiFi AutoConnect Yes Use UP/DOWN to scroll to the WiFi AutoConnect option and press ENTER to proceed. Use UP/DOWN to select Yes and press ENTER to confirm. Once enabled, the CDD automatically memorizes the parameters of the last connection (SSID and passkey). 2013-10-21 (PM245PA2) 12

6B - Cabled connection (Internet via Ethernet cable) Router 6B.1 Disable WiFi function WiFi Enabled Yes > Use UP/DOWN to scroll to the WiFi Enabled option and press ENTER to proceed. WiFi Enabled No > Press DOWN to select No, and then press ENTER to confirm. 6B.2 Enable Ethernet connection Set Password 0010 Press UP and DOWN simultaneously for 3 seconds, then use UP/DOWN to input password 0010 and enter the Change Settings page. Change Settings > Press ENTER to proceed. Network Select Network WiFi Select Network Ethernet Boot loader Erase Flash... Network Connected > Use UP/DOWN to scroll to the Network option and then press ENTER to proceed. Press ENTER to proceed. Use UP/DOWN to select Ethernet and then press ENTER to confirm. The CDD will reboot automatically. After reboot, plug in the Ethernet cable and the CDD will detect network connection. Important In order to maintain the integrity and accuracy of the AC Unison modules energy production data, BenQ Solar recommends system owners to avoid frequent interruptions to the system Internet connection such as turning off the network router or the power supplying the network router. 2013-10-21 (PM245PA2) 13

Step 7. Acquisition of micro-inverters 7.0 Check the CDD Web Server IP by pressing ESC from the CDD s main menu. 7.1 Access the CDD s web server by entering its IP in your web browser. Ensure that the CDD and your computer are connected to the same router. 7.2 In the drop down menu, select Config > Acquisition Wizard. The default login account is username: admin password: admin. 7.3 Click on START ACQUISITION to begin scanning. Once all micro-inverters have been found, click on STOP ACQUISITION to terminate the process. 7.4 To verify that correct micro-inverters have been found, please compare the list of discovered micro-inverters against the system layout map. The SN of micro-inverter is simply the first six digits of its EDDMID. Select the micro-inverters to be associated with the CDD and press CONFIRM. (Signals less than 30 is considered invalid, please install the CDD at a new position.) 7.5 Select the country standard according to local guidelines and then press CONFIRM. 7.6 Confirm the IP portal 220.128.69.225 and IP upgrade 151.22.100.235 in the Config -> Network 7.7 Select the corresponding time zone in Plant Configuration and set the date/time in the Config menu. Note: In order to strengthen the communication signal between modules and the CDD, the CDD must be placed close to the rooftop or the installation location, alternatively the extension cable for Radio Antenna can be purchased (RP-SMA connector) from a local appliance shop. 2013-10-21 (PM245PA2) 14

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2.3 Quick Setup Solar Monitoring System This section contains the essential procedures for Solar Monitoring System registration. For more detailed description, please refer to the complete Solar Monitoring System User guide. Step 8. Login BenQ Solar Web Portal with installer account 8.1 Visit BenQ Solar Web Portal at http://benqsolar.com 8.2 The Distributor Code should be provided to you by your BenQ Solar Authorized Distributor with the purchase of BenQ AC Unison Solar Power System. After the account is created, you will receive a default login password by email. 8.3 Login BenQ Solar Web Portal with your email and the received default password. On the first login, please read the Terms of Use and click ACCEPT if you agree. You will then arrive at the main All Systems page. 8.1 8.2 8.3 2013-10-21 (PM245PA2) 17

Step 9. Register a new AC Unison Solar Power System 9.0 Login with your own installer account. (Note: this process can t be done with distributor account) 9.1 Select Register A New System on All Systems page. 9.2 Enter the CDDID shown on the back of CDD. 9.3 Under the Create Profile tab, enter the details of system installation. Click SAVE to proceed to next step. 9.4 Under the AC Unison Configuration tab, create a system layout model by dragging and dropping the modules. Position the modules according to the actual installation. Click SAVE to proceed to next step. 9.5 Enter the email and name of system owner to sign up owner s account. 9.6 The AC Unison Solar Power System has been registered. It is now listed in the All Systems page. Systems on the list remain locked until the owner logs in to the BenQ Solar Web Portal and activates his/her account. 9.1 9.4 9.5 9.3 9.6 2013-10-21 (PM245PA2) 18

3. Notices and Safety Instructions This section contains important information and instructions to safely install an array of alternating current photo-voltaic solar modules s (AC Unison module) and the CDD.. Failure to follow these instructions can result in equipment damage or failure, or personal injury, and might void the system warranty, and/or property damage. Important Perform all electrical installations in accordance with local codes. The instructions given in this manual do not replace the safety regulations in force in the country of installation and common sense rules. 3.1 Safety Instructions for AC Unison Modules For the purpose of this document, a string is defined as one to twelve AC Unison modules connected in parallel to a dedicated 20A branch circuit. An array refers to the entire installation of one or more strings connected to the structure s AC service equipment. - The AC Unison module is provided with an integral micro-inverter for outdoor PV applications. There is no direct current (DC) field wiring required and the integral micro-inverter has no serviceable parts inside. The following caution is provided as part of the micro-inverter certification: CAUTION - Risk of Electric Shock! - WARNING: Shock Hazard. AC wiring is energized by both utility dedicated branch circuit(s) and AC Unison modules rated as "Utility Interactive". Opening the array's dedicated branch disconnect will also cause the AC Unison modules to stop producing power. Proper safety procedures must be followed when installing or accessing the dedicated branch circuit wiring, which includes unplugging the AC Unison modules from the dedicated branch circuit. - Work with the local electric company before, during, and after the installation of the solar electric system. - The connector on the AC interconnecting cables is rated for disconnect under load. - The AC cables and connectors are listed for outdoor use with AC Unison module applications. - The metal components of the AC Unison module, including frame and micro-inverter, can reach temperatures of approximately 80 C or more under extreme environmental conditions. To reduce risk of burns, use appropriate safety procedures when handling. - In Italy, no more than 12 AC Unison modules can be connected to a single dedicated branch circuit. - To provide proper ventilation to the underside of the module, install modules with a minimum space of 1 inch between the bottom of module and the mounting surface. However, additional distance might be required to maintain a module back sheet temperature less than 85 C. - During shipping, the T-junction cable is securely fastened to prevent movement. Use caution when unpacking the module to ensure the T-junction cable does not swing loose and cause damage to the module back sheet. - The installer must ensure that the AC cables are properly supported and are protected from excessive stress on the cord grip at the base of the T-junction cable. - Do not remove micro-inverter s cover. No user serviceable parts inside. Refer servicing to qualified service personnel. - When the photovoltaic module is exposed to light, it supplies a DC voltage to the micro-inverter. - When managing AC Unison module cables within the array, the installer must ensure they do not bend the cables beyond their bend radius tolerances. - If the extension cable is running across open roof, another cable management system might be needed to keep the extension cable off of the roof and protected from the sun. - Before connecting AC Unison module system to any premises wiring, check the AC service panel where the AC Unison module System breaker will be located. Ensure there is sufficient electrical capacity remaining in the AC Service Panel to handle the AC Unison module system breaker.

3.2 Safety Instructions for CDD - Suitable for indoor use (IP20 / NEMA 1 enclosure). Operating ambient from -20 C to 55 C. - Identification label and power rating for this device are located at the CDD enclosure. - Do not attempt to repair the CDD. If the CDD fails, please return the unit to your distributor for servicing. Tampering with or opening the CDD voids the product warranty. 3.3 Miscellaneous Instructions for AC Unison Modules - Do not install AC Unison modules in the rain, snow or windy conditions. Modules and tools must be dry. - Artificial sunlight should not be concentrated upon the AC Unison modules. Do not expose AC Unison modules to sunlight concentrated with mirrors, lenses or other means. - Use appropriate safety equipment (insulated tools, insulated gloves, etc) when working on any wiring. - Do not use damaged or defective AC Unison modules. Place all damaged or defective modules in a carton to avoid exposure to light. Even damaged or defective modules can produce electricity. - Roof mounted AC Unison modules are to be mounted over a fire resistant roof. - Avoid uneven shade on the AC Unison module surface. Shaded cells may become hot ( hot spot phenomenon) which may result in permanent damage to the module. - Do not clean the glass surface with chemicals or high pressure water spray. - Do not cover the water drain holes of the frame. There is a risk of frost damage when the frame is filled with water. - AC Unison modules are heavy. Handle with care. Keep children away from the system while installing. - Do not expose the AC Unison module to excessive loads on the surface of the AC Unison module or twist the frame. The glass may break. - Do not stand or step on the AC Unison module. The glass may be slippery. - Do not hit or put excessive load on the glass or back film. PV cells may break. - To avoid damage to the junction box, do not hit the junction box; do not pull the cables. - Do not scratch the output cable or bend it with force. The insulation of the output cable may break which may result in electricity leakage or shock. - Do not pull the output cable excessively. The output cable connection may become loose and cause electricity leakage or shock. - Do not drill holes in the frame. It may compromise the frame strength and cause corrosion of the frame. - Do not touch the AC Unison module with bare hands. The frame of the AC Unison module has sharp edges and may cause injury. Wear suitable gloves, such as leather gloves with padding in the palm and finger areas. - Do not drop the AC Unison module or allow objects to fall on the AC Unison module. - Always wear protective head gear, insulating gloves and safety shoes (with rubber soles). - Do not wear metallic jewelry which may conduct electricity and enable electric shock during installation. - Do not touch the junction box and the end of the output cables (connectors) with bare hands during installation or under sunlight, regardless of whether the AC Unison module is connected to or disconnected from the system. - Do not unplug a connector if the system circuit is connected to an operating load. - Do not damage the back sheet of AC Unison modules when fastening the AC Unison modules to a support by bolts. - Use UV resistant materials, wire management hardware to secure cables. 2013-10-21 (PM245PA2) 20

3.4 Mounting Notices The following considerations might affect the placement of the mounting system or the alignment of the modules on the mounting system. In some cases, it might be necessary to modify these notes to accommodate specific installation requirements. However, no attempt is made to describe how to install the mounting system on the roof or how to use mounting equipments. - PV modules should be installed in a location where there is no shading throughout the year. In the northern hemisphere, PV modules should typically face south, and in the southern hemisphere, PV modules should typically face north. Please make sure that there are no obstructions in the surroundings of the site of installation. - PV modules should be tilted so that the energy production from the PV modules will be maximized on an annual basis. The tilt angle of the PV module is measured between the surface of the PV module and a horizontal ground surface. BenQ Solar PV modules produce the most power when the sun s rays strike the module perpendicular to the module surface. To avoid performance losses in series circuits, ensure that all modules have the same tilt and orientation. - Take proper steps in order to maintain reliability and safety in case the PV modules are installed in areas that have heavy snow / extreme cold / strong winds / installations over, or near, water and areas where installations are prone to salt water exposure or on small islands or in desert areas. - Mounting rails should be positioned below the micro-inverter. Do not install modules with the micro-inverter resting on the mounting rail. The frame of the installed module must rest firmly on the mounting rail. - When the T-junction cable is attached to the AC Unison module with cable management components, the T-junction cable extends beyond the edge of the module frame. Mounting rails must be positioned to not interfere with the T-junction cable. 3.5 Grounding Notices Important Equipment (Primary) Grounding Solar modules and racking systems must be provided with appropriate equipment grounding. It s the installer s responsibility to ensure each module is secured to the racking system using certified equipment grounding hardware according to local codes. Proper equipment grounding of the AC Unison module system will ensure full warranty coverage. One tested and verified solution is to install AC Unison module with SCHLETTER racking system. Please see Appendix C for additional information. Electrical (Secondary) Grounding The AC cables provide an electrical (secondary) grounding path from the transition cable to the module frame. However, please note that electrical grounding does not replace equipment grounding. The full electrical grounding path from the transition cable to the module frame follows: The transition cable's green/yellow conductor is connected to the electrical ground terminal in the transition box. The other end of transition cable is connected to the AC cable which includes an internal ground wire with a longer pin. This extra length ensures the ground is the first to make contact when connecting modules and the last to break contact when disconnecting modules. Inside the micro-inverter, the AC ground wire makes a bolted termination to the micro-inverter chassis and is environmentally sealed. The micro-inverter chassis is bonded at the factory to the module frame with stainless steel hardware to provide ground continuity to the AC Unison module frame. Lightning Protection Lightning protection for electronic equipment in the home is often accomplished using rapid response SOV s or MOV s. These devices are typically installed at a sub-panel or main service entrance panel where the AC Unison module system has been connected. Lightning arrestors handle large surges from nearby lightning strikes and surge capacitors control surges that are too fast or too light for a lightning arrestor to function. Complete lightning protection systems from companies such as ABB, APC or Polyphaser can be designed and installed in the home. In addition, component level solutions can be purchased from companies like Dehn, Cital or Delta Lightning Arrestors. 2013-10-21 (PM245PA2) 21

Appendix A. Micro-inverter Specification Output Data (AC) AC Grid Connection Type Rated AC Power Maximum output current Nominal output voltage Single Phase 250 W 1.3 A 230 V Operating voltage range 180 264 V (1) Nominal frequency 50 Hz Operating frequency range 47 53 Hz (2) Nominal Power factor > 0.95 Maximum number of units per string 12 Operating Performance Peak inverter efficiency 96.5% Weighted efficiency (EURO) 95.4% Stand-by Consumption <50mW Environmental Operating ambient temperature range -40 to + 75 (with derating above +65 ) Cooling Natural convention No fans Features Communication ZigBee (IEEE 802.15.4) Grid Standard Enel Guideline (CEI 0-21 + Attachment A70 Terna) (3) VDE 0126-1-1, VDE-AR-N 4105 (4) G83/1, RD1663, AS 4777 Safety and EMC Standard EN61000-6-2, EN61000-6-3, EN61000-3-11, EN61000-3-12 EN50178 (1). The AC voltage range may vary depending on specific country grid standard (2). The Frequency range may vary depending on specific country grid standard (3). Limited to plant power 3kW (4). Limited to plant power 3.68kVA 2013-10-21 (PM245PA2) 22

Appendix B. CDD Specification Communications With AC Unison modules Radio IEEE 802.15.4/ Max Distance (free space) 50m Max number of AC Unison modules 30 With monitoring system Wireless: Wi-Fi IEEE 802.11 / 2.4GHz / 10 Mbps Wired: Ethernet RJ45 10/100 Mbps Power Requirements Power supply Adapter input Adapter output Power consumption Battery External plug-in adapter 100 240Vac ; 50/60 Hz 5Vdc 1A Typ. 2.5W / Max. 5W Coin battery, 3Vdc, replaceable Mechanical al Specifications Dimensions Weight 180 X 150 X 25 mm 0.6 kg Ambient Temperature Range -20 C to 55 C Enclosure Environmental Rating Mounting IP20 / NEMA 1 (Indoor use) Wall mounting Safety Marking CE Safety and EMC Standard FCC Part 15 Class B / Class C; IEEE 6245; IEEE C 37.90.1-2; RTTE 1999/5/CE; IEC 61000-6-2 2013-10-21 (PM245PA2) 23

Appendix C. Grounding Get more information via http://www.schletter.de/en/home-products.html 2013-10-21 (PM245PA2) 24

Appendix D. Installation-Mounting Mounting Modules may be mounted at any angle from horizontal to vertical. Select the appropriate orientation to maximize sunlight exposure. The gap between the module and system structure or ground is required to prevent wiring damage and allows air to circulate behind the module. Make sure that the module installation shall obey local fire-resistant regulations. Do not remove or alter the module frame. Additional mounting holes may damage the module and reduce the strength of the frame. Screwing: Secure the module to the structure using the factory mounting holes. The torque wrench must be used for assembly. In the examples shown, the tightening torque must be 20N.m. Use the existing holes for securing the module; do not drill any additional holes (doing so would void the warranty). Use corrosion-proof fastening materials. Clamping: Note that the clamping clips on the side frame should be in parallel. Installers should ensure the clamps are of sufficient strength to allow for the maximum design pressure of the module. Clips and clamps are not provided by BenQ Solar. The centerline of the clips should be between D1-410mm~D2-490mm from the short end of the module for 5400 Pa design strength. Figure D-1 shows effective mounting area. Figure D-1 Effective mounting area (clamping) 2013-10-21 (PM245PA2) 25