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Sunny Boy Accessories SUNNY BOY COMBINER BOX TLUS SBCBTL6 Installation Guide SBCBTLUS-IUS094510 | IMUS-SBCBTLUS | Version 1.0...
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(with no limitation) any implied warranties of utility, merchantability, or fitness for any particular purpose. All such warranties are expressly disclaimed. Neither SMA America, LLC nor its distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any circumstances.
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A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury. DANGER DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
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SMA America, LLC Important Safety Instructions Other Symbols in this document In addition to the safety and hazard symbols described on the previous pages, the following symbol is also used in this installation guide: Information This symbol accompanies notes that call attention to supplementary information that you should know and use to ensure optimal operation of the system.
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Canadian standards. The Sunny Boy Combiner Box contains no user-serviceable parts. For all repair and maintenance, always return the unit to an authorized SMA Service Center. Before installing or using the Sunny Boy Combiner Box, read all of the instructions, cautions, and warnings on the Sunny Boy Combiner Box in this installation guide.
Information concerning the connected equipment is provided by the manufacturer. 1.3 Nomenclature In this document SMA America Production, LLC is referred to in the following as SMA. In this manual the Sunny Boy Combiner Box TLUS is referred to as Sunny Boy Combiner Box. Installation Guide...
All inputs must be fused in accordance with National Electrical Code NEC 690. The Combiner Box is designed for the use with transformerless SMA PV inverters. The Sunny Boy Combiner Box can only be used in ungrounded array installations.
SMA America, LLC Security 2.2 Safety precautions DANGER Risk of electric shock due to high voltages inside the Sunny Boy Combiner Box. Death or serious injuries will result. • All work on the Sunny Boy Combiner Box must be carried out by qualified personnel only.
If it becomes necessary to return the Sunny Boy Combiner Box, use the original packing material. If you need assistance with a damaged Sunny Boy Combiner Box, contact your SMA dealer or SMA. Contact information for SMA is provided in chapter 12 ”Contact” (page 34).
SMA America, LLC Unpacking 3.3 Identifying the Sunny Boy Combiner Box The Sunny Boy Combiner Box can be identified by the type label. The type label (G) is located on the right side of the enclosure. Position Description Type plate Product name...
Mounting SMA America, LLC 4 Mounting 4.1 Safety DANGER Danger to life due to fire or explosion. There is always a certain risk with electric devices that a fire can occur, even though greatest attention was paid to avoid this during the development.
SMA America, LLC Mounting 4.2 Selecting the mounting location 4.2.1 Conditions for installation • The installation method and mounting location must be suitable for the weight and dimensions of the Sunny Boy Combiner Box (see section 11 ”Technical Data” (page 32)). • Mount on a solid surface.
SMA America, LLC Mounting 4.3 Wall mounting The Sunny Boy Combiner Box can be mounted on stone, brick, solid walls or wooden walls with poles. Be sure to use appropriate type of mounting hardware for the wall material. You may use screws of size 10, 12 or 14. The recommended length of the screws is 1 ⁄...
Mounting SMA America, LLC 4.3.3 Mounting the Sunny Boy Combiner Box When mounting use the Sunny Boy Combiner Box as a template. 1. Place the Sunny Boy Combiner Box at the mounting position on the wall. Level the Sunny Boy Combiner Box.
SMA America, LLC Inserting the strings 5 Inserting the strings NOTICE Infiltration of water during mounting and installation of the product. Damage to the product will result. • Do not open the Sunny Boy Combiner Box when it is raining or when there is very high humidity >...
SMA America, LLC Electrical connection 6.2 Fuse sizing Fuses are used to protect wiring and equipment from excessive currents that can cause damage, heating or in extreme cases even fire. If the fuse rating is too small the fuses can trip during normal operation.
Electrical connection SMA America, LLC 6.3 Connecting equipment ground The PV system grounding must be installed in accordance with the requirements of sections 690.43 ® through 690.47 of the National Electrical Code , ANSI/NFPA 70. In Canada, wiring methods shall be in accordance to the Canadian Electrical Code Part II.
SMA America, LLC Electrical connection 6.4 Connecting PV modules 6.4.1 Inserting the string fuses 1. Open the Sunny Boy Combiner Box as described in section 8.1 ”Opening the Sunny Boy Combiner Box” (page 27). 2. Insert fuses into the fuse holders. 3. Insert all fuse holders provided with the Sunny Boy Combiner Box.
Electrical connection SMA America, LLC 6.4.2 Connecting the negative strings Use the "Negative String Inputs" screw terminals(A). 1. Strip the cable by approx. 0.3 in. (8 mm). 2. Open the screw terminals completely by turning them counterclockwise with a flat-head screwdriver. 3. Plug the stripped cable into the screw terminal.
SMA America, LLC Electrical connection 6.5 Connecting the inverter Route the cables of the combined screw terminal to the inverter along the raceway printed on the board (see figure on page 20). Consider the required cable sizes and torques. Refer to 11.1 ”Cable requirements” (page 33).
Commissioning SMA America, LLC 6.5.2 Connecting DC − Connect the DC − conductors of the DC Disconnect at the inverter/disconnect to the "Combined Out − " screw terminals (A). 1. Strip the cable by approx. 0.3 in. (8 mm). 2. Open the screw terminals completely by turning them counterclockwise with a flat-head screwdriver.
SMA America, LLC Opening and closing 8 Opening and closing 8.1 Opening the Sunny Boy Combiner Box DANGER Risk of electric shock when opening the Sunny Boy Combiner Box under load. Death or serious injuries will result. • Cover the PV modules with an opaque material during installation.
Opening and closing SMA America, LLC 8.2 Closing the Sunny Boy Combiner Box 1. Check wire routing to ensure that no wires can interfere with the seal of the lid. 2. Check the seal on the inside of the lid to ensure it is undamaged and in correct position.
SMA America, LLC Replacing string fuses 9 Replacing string fuses DANGER Danger to life due to high voltages on exposed contacts. • All fuse holders must be plugged in, even if the fuse holder is blank. DANGER Danger to life due to high voltages within the device.
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Replacing string fuses SMA America, LLC 3. Pull the fuses out of the fuse holders. 4. Insert the new fuses into the fuse holders. 5. Insert all fuse holders provided with the Sunny Boy Combiner Box. 6. Close the Sunny Boy Combiner Box as described in section 8.2 ”Closing the Sunny Boy Combiner Box”...
SMA America, LLC Maintenance 10 Maintenance The Sunny Boy Combiner Box is designed to provide many years of trouble-free service. Performing regular maintenance will help to ensure long life and high efficiency of your PV system. Maintenance may include: • Inspection of mounting.
Technical Data SMA America, LLC 11 Technical Data Specifications subject to change without notice. Values at nominal conditions. Connection data Input voltage range 0 V ... 600 V DC Maximum current per string 20 A Nominal DC output current 36 A Maximum DC output current 56.16 A...
SMA America, LLC Technical Data 11.1 Cable requirements Use only 194 °F (90 °C) copper wire for all DC wiring connections to the screw terminals between • PV modules and Sunny Boy Combiner Box • Sunny Boy Combiner Box and Sunny Boy Connection - Sunny Boy Combiner Box The conductor cross-section must be adjusted to the maximum current.
Contact SMA America, LLC 12 Contact If you have technical problems concerning our products, contact the SMA Serviceline. We require the following information in order to provide you with the necessary assistance: • Type of inverter, if applicable • Type and number of modules connected, if applicable •...