Yotta SolarLEAF SL-1000 Instruction Manual

Ver. 1.3
May 2023
Installation / User Manual
SL-1000

Table of Contents
2. Safety Guidelines..................................................................................................................................................4
2.1 General Safety Guidelines........................................................................................................................4
2.2 Product Precautions..................................................................................................................................5
2.3 Transport and Storage Safety Guidelines.............................................................................................5
2.3 Transport and Storage Safety Guidelines (Continues)......................................................................6
1
3. Product Information...................................................................................................................................7
3.1 Introduction........................................................................................................................................7
3.2 SolarLEAF (SL-1000) System.........................................................................................................7
3.3 SolarLEAF (SL-1000) Components...............................................................................................8
3.4 SolarLEAF (SL-1000) Controllers..................................................................................................8
3.5 SolarLEAF (SL-1000) Functional Block Diagram.......................................................................9
3.6 Radio Interference Statement.....................................................................................................10
4. Service and Maintenance.........................................................................................................................11
4.1 Removal from Service or Replacement......................................................................................11
4.2 Returning a SL-1000 unit to Yotta Energy.................................................................................11
5. SolarLEAF (SL-1000) Architecture........................................................................................................12
5.1 Deployment......................................................................................................................................12
1. Manual Introduction....................................................................................................................................2
1.1 Disclaimer of Liability.......................................................................................................................2
1.2 Product Identification.......................................................................................................................3
6. Mechanical Installation............................................................................................................................15
6.1 Positioning.........................................................................................................................................15
6.2 Attaching to Racking System.......................................................................................................16
6.2 Attaching to Racking System (Continues).................................................................................17
7. Electrical Installation...............................................................................................................................18
7.1 Site Mapping....................................................................................................................................18
8. Operation....................................................................................................................................................19
8.1 Activating the System...................................................................................................................19
8.2 Disposal...........................................................................................................................................19
8.3 Troubleshooting.............................................................................................................................19
5.2 National Electric Code and Local Requirements for 208V Systems..................................13
5.3 National Electric Code and Local Requirements for 480V Systems..................................14
Appendix A | Installation Map....................................................................................................................20
Appendix B | SolarLEAF (SL-1000) Data Sheet......................................................................................21

1. Manual Introduction
1.1 Disclaimer of Liability
2
This manual contains information and precautions to be used during the handling and installation of
Yotta Energy’s SolarLEAF (SL-1000) along with technical instructions to be followed during installation,
wiring, and maintenance. Not following the contents of this manual will render the warranty and any
guarantees there under null and void.
Please ensure that installation and operation of your SL-1000 is only carried out by
qualified personnel, and is carried out in accordance with all safety precautions in this
manual and all applicable local codes.
- These instructions are only valid for Yotta Energy’s SolarLeaf (SL-1000).
-The information in this manual is based on Yotta Energy’s knowledge and experience and is believed
to be reliable; but such information including product specification (without limitations) and
suggestions do not constitute a warranty, expressed or implied. Yotta Energy reserves the right to
change the manual, the specifications or product information sheets without prior notice.
-Because of the use of this manual and the conditions or methods of installation, operation, use and
maintenance of the system’s products are beyond Yotta Energy’s control, Yotta Energy assumes no
liability for damage, loss, or expense arising out of or in any way connected with such installation,
operation, use or maintenance. Yotta Energy assumes no responsibility extending beyond the
functional capability and safety of the system. This manual is only for reference.
-If your questions are not adequately addressed in this manual, please first contact your system
supplier. You can find more information on our website www.yottaenergy.com
This manual and the instructions set forth herein are part of the product and should
therefore be kept for the entire useful life of the installation.
NO user-serviceable parts inside. Read ALL instructions first.
Warning! Outdoor commercial use ONLY.
This energy storage equipment was tested to UL 9540A documented as
UL Project 4790256937 - Yotta - Unit Level Report - 2022-09-09. No additional
fire protection required.

1. Manual Introduction
3
1.2 Product Identification
Each SL-1000 has three (3) labels that provide the following information:
-Nameplate (Fixed) - Describes the product’s electrical and mechanical specifications, and
certifications. This label includes serial number and MAC address printed inside the white
rectangular box in the bottom right corner.
-Peel off labels (2) - These labels include serial number and MAC address ONLY. Remove these
prior installing the SL-1000 and place them where suggested. One should be placed somewhere
visible on the PV module frame sitting on top of the SL-1000 and the other one should be placed in
the system map diagram provided in the appendix of this document (Appendix A).
-NOTICE - Having this information well kept and accesible will facilitate troubleshooting and prevent
retrieving this information on fixed or hard to access applications. Keeping track on this will be
required by Yotta Energy in case of service o replacing a unit.
Removing the Nameplate (Fixed) label will void the Yotta
Energy warranty.
Nameplate (Fixed) Label
000000000001
000000000001
MAC: XXXXXXXXXXXX 000000000001
000000000001
MAC: XXXXXXXXXXXX
Peel o Label 1 (Remove and place)
*Follow the steps according to this manual to properly attach the peel o labels.
*Size of labels not in 1:1 ratio. For reference only.
Peel o Label 2 (Remove and place)

2. SAFETY GUIDELINES
2.1 IMPORTANT SAFETY INSTRUCTIONS. SAVE THESE INSTRUCTIONS.
Caution! Risk of electric shock.
4
All installations must be in compliance with all applicable regional and local codes,
and other national or international electrical standards (as applicable).
-ONLY qualified professionals can install and/or replace the SolarLEAF (SL-1000).
-Do NOT attempt to repair the SL-1000. If it fails, contact Yotta Energy Customer Support to obtain an
RMA number and start the replacement process. Damaging or opening the unit will void the warranty.
- Do NOT attempt to disassemble the SolarLEAF (SL-1000).
- Do NOT insert items into the connectors. Do NOT cut or modify the cable assemblies.
-Keep children and unauthorized persons away from the SolarLEAF (SL-1000).
-A solar module generates currents and voltages even in low light intensities i,e moonlight or city
background light. Therefore, contact with the solar panels or attached system with live modules
should be avoided and isolation of live circuits should be taken before any connection or
disconnection operation.
-Physically disconnecting connectors or contacts in a live electrical circuit can cause arching,
resulting in injury.
-Never disconnect solar panels when under load. Be aware that even without the presence of daylight,
residual voltage may still be present.
-In case of fire, do NOT use water to extinguish it.
- In case of rain, wet, or windy weather, do not install or troubleshoot any component.
-In order to ensure safe mounting, familiarize yourself with all applicable regulations for work site
safety and accident prevention.
-Any power connector mated with a socket or connector attached to this product must be from the
same manuafacturer, the same series and have a matching part number.
- All fastenings marked with the ground bonding symbol must be secured
- before connecting wires to the unit. Ground bonding symbol:

2. SAFETY GUIDELINES
5
2.2 Product Precautions
-Do NOT disconnect the power from the output port (DC out) to the DPI Microinverter without
disabling power production first. This is not to protect the SolarLEAF (SL-1000), but is required by
the DPI microinverter.
-Before installing or using the SL-1000, DPI microinverter, or solar panels, read all instructions and
warning notices in the technical documents.
-Be aware that the entire chassis of the SolarLEAF (SL-1000) can reach a temperature of 65°C. To
reduce risk of burns, do NOT touch the chassis without protection.
- Do NOT drill into the SolarLEAF (SL-1000).
- Do NOT add any weight or stack once they are outside the box.
2.3 Transport and Storage Safety Guidelines
- Transport the SolarLEAF (SL-1000) in their original packaging until installation.
-Store the SolarLEAF (SL-1000) securely in cool and dry location. The packaging is not
weather-resistant.
- Protect the SolarLEAF (SL-1000) against scratches.
- Do NOT subject the SolarLEAF (SL-1000) to mechanical stress.
- Do NOT stand on the SolarLEAF (SL-1000).
Inappropriate transportation and/or installation may damage the SolarLEAF
(SL-1000) unit. Damaging the unit will void it’s warranty.
The SolarLEAF (SL-1000) needs the chassis to be grounded. Ensure the chassis is
grounded per code. This can be done via the metal ground foot or a ground lug.
A single SolarLEAF (SL-1000) unit weights 58.7 lbs (25.7 kg) and should be lifted
by two (2) people by grasping the flange on the perimeter of the top of the unit.

2. SAFETY GUIDELINES
6
The SolarLEAF (SL-1000) will be shipped via ground freight at a SOC (Sate of Charge) level of 30% to
ensure transportation and storage safety. The units will be in a state of “deep-sleep” to minimize power
consumption of the batteries.
- Battery & cells are monitored by the BMS in a “sleep mode”
- Internally, the battery port is disconnected from the rest of the power electronics.
-All (wireless and wired) communication are turned o within the SolarLEAF (SL-1000).
2.3 Transport and Storage Safety Guidelines
The SolarLEAF (SL-1000) comes from the factory with all connectors protected. Do NOT remove these
protected covers until installation.
-Protect from moisture at all times. While not required if stored in a sheltered location, all
connectors, DC-In, DC-Out, and M12 connectors, must be protected if the SolarLEAF (SL-1000) is
stored outside where moisture could be introduced into the connectors. If the M12 port has also
been used, remember to install and tighten the M12 cap.
MC4 Sealing Caps M12 Cap
-The SolarLEAF (SL-1000) will have a shipped date indicating when the SolarLEAF has left Yotta
Energy’s warehouse.
-The SolarLEAF (SL-1000) can be stored on a warehouse or jobsite for up to TBD months in a
temperature range of TBD without any maintenance.
- If this time has exceeded, call Yotta Energy for assistance.

3. Product Information
7
The SolarLEAF (SL-1000) is a PV-coupled, panel-level micro energy storage unit with built-in thermal
regulation technology to minimize balance of system costs and the added complexity of installing
storage alongside solar projects. Each SolarLEAF (SL-1000) has two pairs of DC ports (IN and OUT). The
unit receives energy from a solar PV module on the input port and connects to Yotta Energy’s DPI
Microinverter on the output port to deliver power to the load. The SolarLEAF (SL-1000) is not intended to
be used as a backup storage system.
3.1 Introduction
The SolarLEAF (SL-1000) is designed to operate as part of the Yotta ecosystem and is engineered around
the following system components:
- Yotta Energy SolarLEAF SL-1000 panel-level storage energy storage system (this manual).
-Yotta Enegy DPI-208 or DPI-480 3-Phase Microinverter - The DPI-208 and DPI-480 are the
devices that convert the DC power from the DC Out port into AC power which is used on site or sent
out to the utility grid. The DPI Microinverters also provide rapid shutdown functions as described in
the DPI user manual. Contact Yotta Energy for more information.
-Racking system - The SolarLEAF (SL-1000) can be installed into many racking systems, including
ground-mount racking solutions - as long as a valid ground bonding path is provided. UL2703 Listed
racking systems may provide a ground bonding path to building ground. If the racking is not UL2703
Listed a separate ground wire must be attached to each DPI inverter and SolarLEAF element in the
system.
- Solar modules - The SolarLEAF (SL-1000) can be used with most 60-cell or 72-cell solar panels.
3.2 SolarLEAF (SL-1000) System
PV Module
Yotta Energy DPI-208 / DPI-480
3-Phase Microinverter
Yotta Energy SolarLEAF
(SL-1000)

3. Product Information
8
3.3 SolarLEAF (SL-1000) Components
-The SolarLEAF (SL-1000) system has a MPPT solar charger that provides power to a common DC bus
(VCOM). The power can be stored in the SolarLEAF’s battery and/or sent to the DPI Microinverter via
another DC-DC converter.
3.4 SolarLEAF (SL-1000) Controllers
Top of Unit
Gore Vent
Staubli MC4 Output Port
(DC OUT)
Staubli MC4 Input Port
(DC IN)
Wireless Antenna Port
M12 Port

9
3.5 SolarLEAF (SL-1000) Functional Block Diagram
3. Product Information
MPPT
DC
DC
DC
DC
DC
Voltage
Micro
Temp Current
Voltage
BMS
Temp Current
B1
B12
42Vmax
Kill
Switch
Solar Port
(DC In)
VCOM (59V max) Output Port
(DC Out)
Wireless
15A
15A