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R3 Pre
Series
R3-15K
R3-17K
R3-20K
R3-25K

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Table of Contents
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Summarization of Contents

Introduction
1.1 Introduction
This manual describes solar inverters R3-15K/R3-17K/R3-20K/R3-25K.
1.2 Applied designations
Explains the different symbols used in the manual for important information.
1.3 Important safety information
Crucial safety instructions to read before installing, operating, or maintaining the inverter.
1.4 System sizing
Guidelines for dimensioning a photovoltaic system to optimize inverter utilization.
Technical Description
2.1 Mechanical design
Details the outline dimensions and components of the R3-15K/R3-17K/R3-20K/R3-25K inverters.
2.2 Electrical system design
Illustrates the internal wiring diagram and system components of the inverter.
2.3 Technical data
Presents comprehensive technical specifications for different inverter models.
2.4 Grid codes
Lists national and regional grid codes supported by the inverter for compliance.
Installation and Startup
3.1 Package information
Lists the components included in the inverter package.
3.2 Installation environment
Specifies optimal conditions and restrictions for inverter installation.
3.3 Installation position
Provides guidance on selecting the best location and clearances for the inverter.
3.4 Mounting procedure
Step-by-step instructions for physically mounting the inverter.
3.5 Electrical connection
Covers AC output, DC input, and communication connections for the inverter.
3.6 Starting the inverter
Procedure for safely powering on and commissioning the inverter.
User Interface
4.1 LED and key
Describes the function of indicator LEDs and control buttons on the inverter.
4.2 LCD display
Details navigation, settings, and operational information shown on the inverter's LCD screen.
4.3 Self-Test (CEI 0-21)
Instructions for performing the self-test function for Italian grid compliance.
Maintenance
6.1 Routine Maintenance
Covers periodic checks and cleaning for optimal inverter performance.
6.2 Fan Maintenance
Instructions for cleaning or replacing the inverter's cooling fans.

Table of Contents