Table of Contents

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Installation
Instructions
Fronius Symo - Installation
10.0-3 208-240
12.0-3 208-240
10.0-3 480
12.5-3 480
15.0-3 480
15.0-3 208
17.5-3 480
20.0-3 480
22.7-3 480
24.0-3 480
EN-US
Installation instructions
42,0426,0202,EA
018-16052022

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Summarization of Contents

Safety Information
General Safety Guidelines
Manual contains important instructions for inverter installation and maintenance.
Electrical Installation Safety
Electrical installations must comply with national and local codes and regulations.
Installation Location and Position
Safety Instructions and Symbols
Explains safety symbols and highlights dangers from incorrect operation or work.
Fire Prevention and Intended Use
Details precautions against fire risks and defines the inverter's intended purpose.
Location Selection Criteria
Provides criteria and guidelines for selecting a suitable location for inverter installation.
Inverter Installation Positions
Details suitable and unsuitable installation positions for the inverter, including orientations.
General Location Considerations
Outlines criteria for choosing an inverter location, including clearances and environmental conditions.
Solar Module Grounding Requirements
Explains that solar modules must not be grounded at either the positive or negative pole.
Preparation and Mounting
Attaching the Mounting Bracket
Provides steps and safety warnings for securely attaching the mounting bracket.
Knockout Procedures
Details safety precautions and methods for removing knockouts for cable entries.
AC Connection Procedures
Suitable Grid Types
Details different grid types and their compatibility with specific inverter models.
Connecting to the Public Grid
Provides safety instructions and requirements for connecting the inverter to the public AC grid.
Permitted AC Cables
Specifies cable types, AWG sizes, and connection requirements for the AC side.
Aluminum Cable Preparation
Provides connection requirements for aluminum cables, including oxide layer treatment.
Grid Monitoring and Ferrite Rings
Explains grid monitoring resistance and the use of ferrite rings for specific models.
Maximum AC Fuse Protection
Specifies power circuit breaker requirements and limitations for AC connections.
External AC/DC Disconnects
Discusses the need for external disconnects in inaccessible locations for safety personnel.
DC Connection Procedures
Multi-MPP Tracker Operation
Explains dual DC inputs and connection options for module fields on Multi-MPP Trackers.
Connecting Solar Module Strings
Provides safety instructions and procedures for connecting solar module strings to the inverter.
String Fuse Protection
Details the application and specifications of string fuses for additional protection of solar modules.
Permitted DC Cables
Specifies allowed cable types for DC connections, including copper and aluminum options.
Solar Module Selection Guidelines
Provides guidance on selecting suitable solar modules, considering open circuit voltage and altitude.
DC Aluminum Cable Connections
Details connection requirements for aluminum cables on the DC side, including oxide layer treatment.
Data Communication and Solar.Net
Laying Data Communication Cables
Provides step-by-step instructions for routing and installing data communication cables.
Installing the Datamanager
Details the process for installing the Fronius Datamanager, including safety precautions.
Physical Installation and Initial Setup
Sealing Conduits
Provides instructions on sealing conduits to prevent condensation and air circulation issues.
Clipping Inverter to Mounting Bracket
Details the process and safety precautions for attaching the inverter to its mounting bracket.
Initial Inverter Startup
Guides users through the initial setup process, including country selection and language.
Options and Maintenance
USB Stick Functionality
Explains how USB sticks function as data loggers and for software updates.
Data Management and Buffer Memory
Covers data storage, memory capacity, and buffer memory usage.
USB Stick Handling and Removal
Provides safety instructions for removing USB sticks and updating software.
Optional Accessories
Details options like the Shade Cover and guidelines for mounting other accessories.
Maintenance Procedures
Advises on performing annual checks for horizontal/outdoor installations and service by trained technicians.
Cleaning the Inverter
Provides instructions on cleaning the inverter using a damp cloth and avoiding harsh agents.

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