SMA sunny boy 2000hf-us User manual

SB20_25_30HFUS-eng-IUS113711 | IMUS-SB20-30HFUS | Version 1.1
CA
US
PVInverter
SUNNYBOY2000HF‑US/2500HF‑US/3000HF‑US
Installation Guide

Knockingontheupperlid: • Activatingthebackgroundillumination • Switchingthroughthepowervaluesofthepast16feed-
inhourstothedailypowervaluesofthepast16days
• Switchingthroughthelinedisplay
Actualoutput
Dailyenergy
Totalenergyfed insincetheSunnyBoywas installed
Event text
BluetoothconnectiontootherSunnyBoys
Inputvoltage/inputcurrent
Gridrelay
Grideventnumber
SunnyBoyeventnumber
Powerreductionduetoexcessivetemperature • Cleanthefan(ifnecessary) • SunnyBoymightneedbetterventilation
PVarrayeventnumber
Powercurve or energy curveofthepast16feed- inhoursorpast16days(switchingthe displayisdonebyknockingonthelid)
Failurethatcanberemovedon-site (seechapter10.3 )
Devicefault PleasecontactSMA.
Outputvoltage/outputcurrent

SMA America, LLC Legal Restrictions
Installation Guide SB20_25_30HFUS-eng-IUS113711 3
Copyright © 2011 SMA America,LLC. All rights reserved.
No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form
or by any means, electronic, mechanical, photographic, magnetic or otherwise, without the prior
written permission of SMA America,LLC.
Neither SMA America,LLC nor SMA Solar Technology Canada Inc. makes representations, express
or implied, with respect to this documentation or any of the equipment and/or software it may
describe, including (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 nor SMA Solar Technology Canada Inc. nor its distributors or dealers shall
be liable for any indirect, incidental, or consequential damages under any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the
above exclusion may not apply.
Specifications are subject to change without notice. Every attempt has been made to make this
document complete, accurate and up-to-date. Readers are cautioned, however, that
SMAAmerica,LLC and SMA Solar Technology Canada Inc. reserve the right to make changes
without notice and shall not be responsible for any damages, including indirect, incidental or
consequential damages, caused by reliance on the material presented, including, but not limited to,
omissions, typographical errors, arithmetical errors or listing errors in the content material.
All trademarks are recognized even if these are not marked separately. Missing designations do not
mean that a product or brand is not a registered trademark.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and
any use of such marks by SMA America,LLC and SMA Solar Technology Canada Inc. is under
license.
SMA America, LLC
3801 N. Havana Street
Denver, CO 80239 U.S.A.
SMA Solar Technology Canada Inc.
2425 Matheson Blvd. E, 8th Floor
Mississauga, ON L4W 5K5, Canada

Important Safety Instructions SMA America, LLC
4 SB20_25_30HFUS-eng-IUS113711 Installation Guide
IMPORTANTSAFETYINSTRUCTIONS
SAVETHESEINSTRUCTIONS
ThismanualcontainsimportantinstructionsformodelsSunnyBoy2000HF‑US,2500HF‑US,
3000HF‑USinverter,thatmustbefollowedduringinstallationandmaintenanceoftheinverter.
TheSunnyBoyisdesignedandtestedaccordingtointernationalsafetyrequirements,butaswithall
electricalandelectronicequipment,certainprecautionsmustbeobservedwheninstallingand/
oroperatingtheSunnyBoy.Toreducetheriskofpersonalinjuryandtoensurethesafeinstallation
andoperationoftheSunnyBoy,youmustcarefullyreadandfollowallinstructions,cautionsand
warningsinthisinstallationmanual.
Warningsinthisdocument
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.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE
NOTICE is used to address practices not related to personal injury.

SMA America, LLC Important Safety Instructions
Installation Guide SB20_25_30HFUS-eng-IUS113711 5
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:
Markings on this product
The following symbols are used as product markings with the following meanings.
Information
This symbol accompanies notes that call attention to supplementary information that you
must know and use to ensure optimal operation of the system.
Warning regarding dangerous voltage
The product works with high voltages. All work on the product must only be performed
as described in the documentation of the product.
Beware of hot surface
The product can become hot during operation. Do not touch the product during
operation.
Observe the operating instructions
Read the documentation of the product before working on it. Follow all safety
precautions and instructions as described in the documentation.
This inverter is evaluated to UL 1741, which includes assessment to all of the
requirements of IEEE1547 and IEEE1547.1, which are an outgrowth and further
development of the IEEE recommended practices and guidelines contained in IEEE Std.
929-2000. IEEE 929-2000 provides recommendations regarding the proper equipment
and functionality necessary to ensure compatible operation when power generation is
connected to the utility grid. The inverter is additionally evaluated to CAN/CSA C22.2
No. 107.1-1.

General Warnings SMA America, LLC
6 SB20_25_30HFUS-eng-IUS113711 Installation Guide
GeneralWarnings
GeneralWarnings
All electrical installations must be done in accordance with the local and
NationalElectrical Code® ANSI/NFPA 70 or the Canadian Electrical Code®
CSAC22.1. This document does not and is not intended to replace any local, state,
provincial, federal or national laws, regulation or codes applicable to the installation and
use of the inverter, including without limitation applicable electrical safety codes. All
installations must conform with the laws, regulations, codes and standards applicable in
the jurisdiction of installation. SMA assumes no responsibility for the compliance or
noncompliance with such laws or codes in connection with the installation of the inverter.
The Sunny Boy contains no user-serviceable parts except for the fan on the bottom of the
enclosure. For all repair and maintenance always return the unit to an authorized SMA
Service Center.
Before installing or using the Sunny Boy, read all of the instructions, cautions, and warnings
on the Sunny Boy in this installation guide.
Before connecting the Sunny Boy to the power distribution grid, contact the local power
distribution grid company. This connection must be made only by qualified personnel.

SMA America, LLC Table of Contents
Installation Guide SB20_25_30HFUS-eng-IUS113711 7
TableofContents
1 Notes on this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 Appropriate usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3 FCC Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.4 Common utility voltage configurations . . . . . . . . . . . . . . . . . . . 17
3 Unpacking and inspection. . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Identifying the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 Selecting the wall mounting location . . . . . . . . . . . . . . . . . . . . 20
4.3 Mounting the wall mounting bracket . . . . . . . . . . . . . . . . . . . . 21
4.3.1 Possibilities for mounting the wall mounting bracket . . . . . . . . . . . . . . . . . . . 23
4.3.2 Mounting the wall mounting bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4 Mounting the SMA DC-Disconnect. . . . . . . . . . . . . . . . . . . . . . 25
4.5 Mounting the Sunny Boy onto the Wall mounting bracket . . . . 27
4.6 Grounding the SMA DC-Disconnect. . . . . . . . . . . . . . . . . . . . . 28
5 Configuring the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1 The Quick Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1.1 Country setting via rotary switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 Configuring the Quick Module. . . . . . . . . . . . . . . . . . . . . . . . . 33

Table of Contents SMA America, LLC
8 SB20_25_30HFUS-eng-IUS113711 Installation Guide
5.2.1 Configuration before installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.2.2 Configuration for Bluetooth communication . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.2.3 Closing the Quick Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.3 Mounting the Quick Module . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.4 Configuration after installation . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.4.1 Opening the installed Quick Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.5 Disassembling the Quick Module . . . . . . . . . . . . . . . . . . . . . . . 39
6 Wiring the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.2 Lower view of the SMA DC-Disconnect . . . . . . . . . . . . . . . . . . 42
6.3 Connection of the PV array (DC) . . . . . . . . . . . . . . . . . . . . . . . 43
6.3.1 Installing cable conduits and leading cable into the Sunny Boy. . . . . . . . . . 44
6.4 Connection of PV strings without optional string fuses . . . . . . . 46
6.5 Connection of PV strings with optional fuses. . . . . . . . . . . . . . . 50
6.6 Installation of the SMA Plug-in Grounding . . . . . . . . . . . . . . . . 54
6.6.1 Configurable Grounding Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.6.2 Parameter "Module grounding prescribed?" or "GndMdt". . . . . . . . . . . . . . 56
6.6.3 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.6.4 Parameter "Prescribed grounding type" or "Md.GndModReq" . . . . . . . . . . 58
6.7 Wiring the AC Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.7.1 AC connection safety requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.7.2 Connecting the Sunny Boy on the AC side . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.8 Closing the SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . 62
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8 Opening and closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.1 Disconnect the Sunny Boy from Voltage Sources . . . . . . . . . . . 65
8.2 Open SMA DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.3 Closing the SMA DC-Disconnect . . . . . . . . . . . . . . . . . . . . . . . 67

SMA America, LLC Table of Contents
Installation Guide SB20_25_30HFUS-eng-IUS113711 9
8.4 Lock-Off function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
8.4.1 Secure Sunny Boy against reconnection. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
8.4.2 Unlocking and switching on the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . 69
9 Maintenance and cleaning . . . . . . . . . . . . . . . . . . . . . . . . 70
9.1 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
9.1.1 Cleaning the fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9.1.2 Checking the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
9.2 Checking the SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . 74
9.3 Exchanging fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.3.1 Exchanging SMA Plug-in Grounding fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.3.2 Replacing optional string fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.4 Inspecting and changing the varistors . . . . . . . . . . . . . . . . . . . 80
10 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.1 Green LED is lit or flashes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.2 Update Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.3 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.1 Checking the PV array for Ground Fault. . . . . . . . . . . . . . . . . . 88
11.2 Correct Grounding Fuse Fault. . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.3 Correct the Grounding Type. . . . . . . . . . . . . . . . . . . . . . . . . . . 90
11.4 Exchanging Grounding Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.5 AC fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
12 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
12.1 Disassembling the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . 92
12.2 Disassembling SMA DC-Disconnect . . . . . . . . . . . . . . . . . . . . . 95
12.3 Disassemble the Sunny Boy for Transport. . . . . . . . . . . . . . . . 100
12.4 Packaging the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
12.5 Storing the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Table of Contents SMA America, LLC
10 SB20_25_30HFUS-eng-IUS113711 Installation Guide
12.6 Disposing of the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . 100
12.7 Supplementary Information. . . . . . . . . . . . . . . . . . . . . . . . . . . 100
12.7.1 Connect wires to DC terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
12.7.2 Disconnect wires from DC terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . 101
12.7.3 Disconnect wires from AC-terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . 102
13 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
13.1 Torque Values and Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . 105
13.2 Efficiency curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
14 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
15 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

SMA America, LLC Notes on this manual
Installation Guide SB20_25_30HFUS-eng-IUS113711 11
1 Notes on this manual
This manual describes the assembly, installation, commissioning and maintenance of the following
SMA inverters:
• Sunny Boy 2000HF‑US (SB 2000HFUS-30)
• Sunny Boy 2500HF‑US (SB 2500HFUS-30)
• Sunny Boy 3000HF‑US (SB 3000HFUS-30)
This manual does not cover any details concerning equipment connected to the Sunny Boy (e. g. solar
modules). Information concerning the connected equipment is available from the manufacturer of the
equipment.
1.1 Validity
This manual is valid for the Sunny Boy 2000HF‑US, Sunny Boy 2500HF‑US and
Sunny Boy 3000HF‑US.
1.2 Target group
This manual is for qualified personnel. Qualified personnel have received training and have
demonstrated skills and knowledge in the construction and operation of the device. Qualified
personnel is trained to deal with the dangers and hazards involved in installing electric devices.
1.3 Additional information
You can find further information on special subjects in the download area of www.SMA‑America.com.
Refer to the user manual for detailed information on operating the Sunny Boy.
1.4 Nomenclature
In this document SMA America Production, LLC and SMA Solar Technology Canada Inc. are referred
to in the following as SMA.
WARNING
Dangerous voltages are present at various points in a PV system. For safety reasons, it is
recommended that only qualified personnel install and operate this equipment.

Safety SMA America, LLC
12 SB20_25_30HFUS-eng-IUS113711 Installation Guide
2 Safety
2.1 Appropriate usage
The Sunny Boy is a PV inverter which converts the direct current of a PV array into alternating current
and feeds this into the power distribution grid. The Sunny Boy is suitable for installation indoors and
outdoors.
You can use the generated alternating current electricity as follows:
AC and DC load circuit breaker
Secure the AC and DC cables on the Sunny Boy with load circuit breakers. With the AC and DC load
circuit breakers you can safely disconnect the Sunny Boy from the grid and the PV arrays. A DC load
circuit breaker is included in the Sunny Boy delivery. You must provide an AC load circuit breaker.
House grid: The energy is fed into the house grid and is used there by connected
consumers (for example household devices or lights). The surplus energy is
fed into the power distribution grid. When the Sunny Boy is not generating
energy, for example at night, the connected consumers are supplied by the
power distribution grid.
The Sunny Boy does not have its own energy meter. When the energy is
supplied into the power distribution grid, the energy meter runs in reverse.
Power distribution grid: The energy is fed directly into the power distribution grid. The Sunny Boy
does not have its own energy meter. Dependent on the utility supplier, the
energy produced is compensated.
Stand-alone grid: The Sunny Boy is connected to a stand-alone grid. A stand-alone grid is a
grid which is not connected to a power distribution grid. The Sunny Boy
requires a grid forming device, for example a Sunny Island, for operation.
The energy generated is consumed directly on site. Surplus energy can be
stored in batteries using proper equipment.

SMA America, LLC Safety
Installation Guide SB20_25_30HFUS-eng-IUS113711 13
Principle of a PV plant with this Sunny Boy
You must operate the Sunny Boy only with PV arrays (modules and cabling) of protection classII.
Do not connect any sources of energy other than PV modules to the Sunny Boy.
When designing the PV system, ensure that the values comply with the permitted operating range of
all components at all times. The free design program ”Sunny Design” (www.SMA‑America.com) will
assist you. The manufacturer of the PV modules must have approved the modules for use with this
Sunny Boy device. You must also ensure that all measures recommended by the module manufacturer
for long-term maintenance of the module properties are taken. You will find further information in the
download area of www.SMA‑America.com.
Do not use the Sunny Boy for purposes other than those described here. Alternative uses,
modifications to the Sunny Boy or the installation of components not expressly recommended or sold
by the manufacturer void the warranty claims and operation permission.
Anti-Islanding protection
Islanding is a condition that can occur if the power distribution grid is disconnected while the
Sunny Boy is operating and the remaining load is resonant at 60 Hz and matches the output of the
Sunny Boy perfectly. This condition is highly unlikely and had never been witnessed outside of a
controlled laboratory. Nevertheless, the Sunny Boy incorporates an advanced active islanding
protection algorithm to ensure that the system will not export power into a balanced 60 Hz resonant
load while the utility is disconnected. The Sunny Boy periodically injects both leading and lagging
reactive current into the power distribution grid. This method has been proven by Underwriters
Laboratories to effectively destabilize and disconnect from a balanced island condition.
Position Name
APV array
BSunny Boy with integrated SMA DC-Disconnect
CLine circuit breaker
DLoad
EEnergy meter
FPower distribution grid

Safety SMA America, LLC
14 SB20_25_30HFUS-eng-IUS113711 Installation Guide
PV ground fault detection and interruption
The Sunny Boy is equipped with a ground fault detection device. If a ground fault current greater than
1 Amp is detected, the Sunny Boy will shut down and display the fault condition on the user interface
display. Once the ground fault is located and corrected, the ground fault error will need to be
manually cleared and the inverter will then resume normal operation.
PV series fusing
Series fusing may be required depending on the type of PV module used in the system.
See NationalElectricalCode®690.9
Interconnection code compliance
The Sunny Boy has been tested and listed by Underwriters Laboratories to meet the requirements of
UL1741 Static Inverters and Charge Controllers for use in Photovoltaic Power Systems, as well as
IEEE-929-2000 Recommended Practice for Utility Interface of Photovoltaic Systems and IEEE 1547
Standard for Interconnecting Distributed Resources with Electric Power Systems.
UL1741 is the standard applied by Underwriters Laboratories to the Sunny Boy to certify that it meets
the requirements of the NEC and IEEE-929-2000. IEEE 929-2000 provides recommendations
regarding the proper equipment and functionality necessary to ensure compatible operation when
power generation is connected to the utility grid.
The Sunny Boy is also certified to C22.2 No 107.1-01 (General Use Power Supplies).
Operating temperature
The Sunny Boy has been designed to maintain full power output at ambient temperatures as high as
+113 °F (+45 °C). Fan cooling allows this level of output power to be achieved even in enclosed
spaces. The Sunny Boy will continue to operate well beyond +113 °F (+45 °C) and derates as
needed to maintain a safe internal component temperature.
Contact the local utility and/or the authority having jurisdiction prior to connecting the
Sunny Boy to the power distribution grid.

SMA America, LLC Safety
Installation Guide SB20_25_30HFUS-eng-IUS113711 15
2.2 Safety instructions
DANGER
During operation high voltages are present in the Sunny Boy.
Death or serious injury due to electric shock.
• All work on the Sunny Boy must only be carried out by qualified personnel.
During operation high voltages are present in the PV plant.
Death or serious injury due to electric shock in the event of missing or damaged array
grounding.
• Comply with the local requirements for grounding the modules and the PV array.
• Thoroughly connect and ground the generator frame and other electrically
conducting surfaces.
WARNING
The Sunny Boy can become hot during operation.
Risk of burns.
• Do not touch the enclosure body during operation.
• Only touch the lid during operation.
CAUTION
Possible damage to health as a result of the effects of radiation.
• Do not stay closer than 8 in. (20 cm) to the Sunny Boy for any length of time.

Safety SMA America, LLC
16 SB20_25_30HFUS-eng-IUS113711 Installation Guide
2.3 FCC Compliance Information
SMA PV inverter, model Sunny Boy 2000HF‑US, Sunny Boy 2500HF‑US,
Sunny Boy 3000HF‑US
This device complies with Part 15 A and B of the FCC Rules. Operation is subject to the following
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
• The user is cautioned that changes or modifications not expressly approved by
SMAAmerica,LLC could void the user’s authority to operate this equipment.
Contact SMA for more information.
RF-exposure Statement
The SMA Sunny Boy 2000HF‑US, Sunny Boy 2500HF‑US, Sunny Boy 3000HF‑US contains a
modular transmitter. Thus it must have a separation of at least 8 in. (20 cm) between the antenna and
the body of the user or nearby persons, excluding hands, wrists, feet, and ankles.

SMA America, LLC Safety
Installation Guide SB20_25_30HFUS-eng-IUS113711 17
2.4 Common utility voltage configurations
The figure below illustrates common utility voltage configurations. Remember, when connecting the
Sunny Boy to the power distribution grid, the phase relationship is not important, but the voltage must
be compatible.

Unpacking and inspection SMA America, LLC
18 SB20_25_30HFUS-eng-IUS113711 Installation Guide
3 Unpacking and inspection
3.1 Scope of delivery
Check the delivery for completeness and for visible external damage, such as cracks in the enclosure
or in the display. Contact your dealer if anything is damaged or missing.
3.2 Identifying the Sunny Boy
You can identify the Sunny Boy using the type label. The type label is on the right side of the enclosure.
The serial number (Serial No.) and the type (Type / Model) of the Sunny Boy are specified on the
type label.
Object Quantity Description
A1 Sunny Boy
B1 Wall mounting bracket
C1 Installation manual
D1Document set
E1User manual
F1SMA DC-Disconnect
G1 Communication module (SMA Quick Module)
H1SMA Plug-in Grounding
I3 Screws and washers (M5)
(NamedesGerätes):
BittefüllenSie die folgendenFelderaus:
:
Typ:
Seriennummer:
DatumderInbetriebnahme:
Anschrift:
Installationsbetrieb
Typ:
Seriennummer:
DatumderInbetriebnahme:
Anschrift:
Installationsbetrieb
Gewährleistungs- undGarantiebedingungen
ABCD
COM
E
FGH I

SMA America, LLC Mounting the Device
Installation Guide SB20_25_30HFUS-eng-IUS113711 19
4 Mounting the Device
4.1 Safety
DANGER
Danger to life due to fire or explosions.
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.
• Do not install the inverter on flammable construction materials.
• Do not install the inverter in areas where highly flammable materials are stored.
• Do not install the inverter in potentially explosive areas.
WARNING
The Sunny Boy can become hot during operation.
Risk of burns.
• Mount the Sunny Boy in such a way that it cannot be touched inadvertently during
operation.
CAUTION
Danger of crushing due to the Sunny Boy falling.
Crushing of body parts
• Consider the weight of the Sunny Boy with SMA DC-Disconnect of approximately
50 lbs (23 kg) during mounting.
• Always lift the Sunny Boy with both hands.

Mounting the Device SMA America, LLC
20 SB20_25_30HFUS-eng-IUS113711 Installation Guide
4.2 Selecting the wall mounting location
Observe the following conditions during installation:
• The installation method and mounting location must be suitable for the weight and dimensions
of the Sunny Boy (see section 13”Technical Data” (page103)).
• Mount on a solid surface.
• The mounting location must be accessible at all times. Otherwise proper maintenance of the
Sunny Boy is not possible.
• Vertical installation or tilted backwards by max. 30°.
• The connection area must point downwards.
• Never install the device with a forward tilt.
• Do not install horizontally.
• Install at eye level to allow operating status to be read at all times.
• The ambient temperature must be below +113 °F (+45 °C) to ensure optimal operation.
• Do not expose the Sunny Boy to direct sunlight, in order to avoid power reduction due to
excessive heating.
• In a living area, do not mount the unit on
plasterboard walls (or similar) in order to avoid
audible vibrations.
The Sunny Boy can make noises when in use which
can be regarded as a nuisance when installed in a
living area.