# Lunar Battery Installation Manual (LFP)
---
## Table of Contents
**Legal Information............................................................................................................................................5**
**A. Contact..................................................................................................................................................5**
**B. Legal Statement.................................................................................................................................... 5**
**C. Documentation...................................................................................................................................... 5**
**D. Specifications........................................................................................................................................ 5**
**E. Copyright............................................................................................................................................... 5**
**F. Trademarks............................................................................................................................................ 6**
**G. Electronics and Battery Disposal...........................................................................................................6**
**H. Warranty Information............................................................................................................................6**
**Important Safety Instructions.........................................................................................................................7**
**A. Intended Use.........................................................................................................................................7**
**B. Safety and Advisory Symbols................................................................................................................ 8**
**C. Documentation...................................................................................................................................... 9**
**D. Service Contact Information................................................................................................................. 9**
**E. Safety Rules and General Information...................................................................................................9**
**F. Storage, Installation, and Use..............................................................................................................12**
**G. Environmental Conditions................................................................................................................... 16**
**H. Warning Symbols................................................................................................................................ 17**
**I. Qualified Personnel.............................................................................................................................. 18**
**Regulatory Statements................................................................................................................................. 19**
**A. Compliance Summary......................................................................................................................... 19**
**B. Compliance Statements...................................................................................................................... 20**
**Lunar System Specifications......................................................................................................................... 22**
**System (AC ESS)..................................................................................................................................... 22**
**Inverter Block..........................................................................................................................................22**
**DC-ESS Unit.............................................................................................................................................23**
**Environmental......................................................................................................................................... 24**
**Mechanical.............................................................................................................................................. 25**
**Operational Specifications...................................................................................................................... 25**
**Component Overview....................................................................................................................................26**
**System Overview.......................................................................................................................................... 27**
**A. System Diagrams................................................................................................................................ 27**
**B. Battery System Configurations............................................................................................................ 29**
**C. Solar System Configurations............................................................................................................... 30**
**D. Battery to Lunar Maximizer & Maximizer Hub Communication............................................................30**
**E. Microgrid Interconnect Device (MID)...................................................................................................30**
---
**F. Battery to Lunar Bridge Connections................................................................................................... 30**
**G. Lunar Battery Communication.............................................................................................................31**
**Site Requirements.........................................................................................................................................32**
**A. Location...............................................................................................................................................32**
**B. System Clearances.............................................................................................................................. 33**
**C. Maximum Distance between System Components..............................................................................35**
**D. Cooling & Ventilation........................................................................................................................... 36**
**E. Operating Temperature Range.............................................................................................................36**
**F. Placard & Directory Requirements.......................................................................................................37**
**Tools & Materials...........................................................................................................................................38**
**A. Required Tools.................................................................................................................................... 38**
**B. Required Materials.............................................................................................................................. 38**
**Installation Preparation................................................................................................................................ 39**
**A. Open the Box and Inspect the DC-ESS Unit.........................................................................................39**
**Mounting the Wall Brackets.......................................................................................................................... 40**
**Anchoring Details.................................................................................................................................... 41**
**A. Wall-mounted system......................................................................................................................... 44**
**B. Floor-mounted System........................................................................................................................50**
**Installing the DC-ESS Unit.............................................................................................................................53**
**Install the Inverter........................................................................................................................................ 58**
**Wire the Inverter...........................................................................................................................................59**
**A. Open the Inverter wiring compartment cover..................................................................................... 59**
**B. Install Conduit.....................................................................................................................................60**
**C. Power Wiring....................................................................................................................................... 62**
**E. Communication Wiring........................................................................................................................ 63**
**F. Optional: Rapid Shutdown Initiation Device (RSID)............................................................................. 63**
**G. Inverter Wiring Cover.......................................................................................................................... 65**
**Connecting the Trunk Harness...................................................................................................................... 66**
**Connecting the Trunk Harness to the Inverter.........................................................................................66**
**Connecting the Trunk Harness to the DC-ESS Units................................................................................ 70**
**Install the Inverter EMC Components........................................................................................................... 73**
**A. Apply conductive tape to AC & DC Conduit Connectors.......................................................................73**
**B. Inverter Door Magnet Strap.................................................................................................................74**
**Install the Aesthetic Covers.......................................................................................................................... 75**
**Connect the Antenna & LED.....................................................................................................................79**
**Install the Bug Barriers on the Conduit......................................................................................................... 80**
**Conduit Cover.......................................................................................................................................... 82**
---
**Commission the Lunar System...................................................................................................................... 84**
**Troubleshooting............................................................................................................................................ 85**
**LED Indicators......................................................................................................................................... 85**
**Appendixes................................................................................................................................................... 86**
**Rogowski Coil (CTs)....................................................................................................................................... 86**
**A. Compatible Coils................................................................................................................................. 86**
**B. Installation.......................................................................................................................................... 86**
**Coils Installation at Main Panel....................................................................................................86**
**Coil Installation on Branch Circuits.............................................................................................. 87**
**Coil Termination at the Bridge......................................................................................................87**
**C. Coil Phase & Polarity........................................................................................................................... 87**
**Adjusting Coil Phase & Polarity.................................................................................................... 87**
**Coil Indicator Arrow and Wire Termination.................................................................................. 89**
**D. Commissioning.................................................................................................................................... 89**
**Power Control Systems (PCS)....................................................................................................................... 90**
**A. Terminology........................................................................................................................................ 94**
**B. Commissioning.................................................................................................................................... 95**
**C. Labels.................................................................................................................................................. 96**
**Grid Interconnection Settings for the Lunar Inverter.................................................................................... 97**
**Enter Service Defaults....................................................................................................................... 97**
**High Voltage Shall Trip Curve.............................................................................................................98**
**Points.................................................................................................................................................98**
**Low Voltage Shall Trip Curve..............................................................................................................98**
**Points.................................................................................................................................................98**
**High Frequency Shall Trip Curve........................................................................................................ 99**
**Points.................................................................................................................................................99**
**Low Frequency Shall Trip Curve.........................................................................................................99**
**Points.................................................................................................................................................99**
**Volt Var Curve.................................................................................................................................. 100**
**Points.............................................................................................................................................. 100**
**Frequency Droop............................................................................................................................. 100**
**Volt Watt Curve................................................................................................................................101**
**Points.............................................................................................................................................. 101**
**Revision History.......................................................................................................................................... 101**
---
## Legal Information
## A.Contact
Lunar Energy, Inc.
755 Ravendale Drive
Mountain View, CA 94043
USA
www.lunarenergy.com
Attention: legal@lunarenergy.com
## B.Legal Statement
For complete legal information, including copyrights, trademarks, licensing, terms of use, warranties,
and customer privacy policy, visit www.lunarenergy.com.
## C.Documentation
Lunar Energy makes no representation or warranty, express or implied, with respect to this
documentation or any of the equipment or software it may describe, including any implied warranties
of utility, merchantability, or fitness for any particular purpose. Neither Lunar Energy nor its
distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any
circumstances.
All information contained in this document is accurate at the time of publication. Lunar Energy
reserves the right to make technical corrections and updates at any time without advance notice. The
images in this document are provided for demonstration purposes only. For the latest installation and
user documentation, visit www.lunarenergy.com.
## D.Specifications
All specifications contained in this document are accurate at the time of publication. Lunar Energy
reserves the right to make product modifications at any time without advance notice. For the latest
product information, visit www.lunarenergy.com.
## E.Copyright
©2023 Lunar Energy, Inc. All rights reserved.
---
All information in this document is subject to copyright and other intellectual property rights of Lunar
Energy, Inc. This material may not be modified, reproduced or copied, stored in a retrieval system, or
transmitted, in whole or in part, without the prior written permission of Lunar Energy.
## F. Trademarks
| lunar energy | Lunar Energy
Lunar Battery
Lunar Bridge
Lunar Maximizer
Lunar Maximizer Hub |
| --- | --- |
All other trademarks in this document are the property of their respective owners. The unauthorized
use of any trademark displayed in this document or on the product is strictly prohibited.
## G.Electronics and Battery Disposal
Waste electrical products should not be disposed of with household waste. Proper disposal of
electronic equipment is required. Refer to local codes for disposal requirements.
Contact Lunar Energy for further guidance to identify how to properly decommission, dispose, recycle,
and/or return hardware to Lunar Energy.
## H.Warranty Information
The warranty for Lunar products depends on a reliable internet connection, which allows the system to
receive regular over-the-air firmware updates. If a Lunar product is disconnected from the internet for
an extended period, its warranty may be limited to five years. Refer to
https://www.lunarenergy.com/documents for more information.
---
# Important Safety Instructions
## SAVE THESE INSTRUCTIONS
This installation document provides instructions for storing, transporting, installing, commissioning and
decommissioning the Lunar Battery, an AC Energy Storage System (ESS) consisting of the Lunar Inverter and
DC-ESS Units. These instructions are for qualified installers and service technicians only.
Follow these instructions during installation, maintenance, and operation of the equipment. This section
contains safety information that must be observed at all times when working on or using the equipment.
## ATTENTION
Please read this entire document before installing the equipment. Ignoring the warnings or instructions within
may lead to electric shock, serious injury, loss of life, or damage to the equipment, potentially causing it to
become inoperable.
Lunar Energy assumes no liability for injury or property damage due to installation or service attempted by
unqualified individuals, or due to a failure of installers or service technicians to properly follow safety,
installation and service instructions.
## A.Intended Use
The product is a battery system with integrated hybrid inverter for a solar photovoltaic and battery
storage system. It is used in the Lunar Energy Storage System along with a microgrid interconnect
device and accessory components for module-level power electronics and communication. The
system is intended for residential use.
The system is intended for use in standard 120/240-volt split-phase, 3-wire electrical distribution
systems in North America.
The product is suitable for indoor and outdoor use, according to the requirements outlined in this
Installation Manual.
The product must be operated with third-party accessory components approved by the electrical
standards applicable in the jurisdiction of installation.
---
## B.Safety and Advisory Symbols
The following symbols are used in this document to indicate important information:
**WARNING**: Indicates a hazardous situation where failure to follow instructions or use
proper materials may result in **serious injury, loss of life, or destruction of equipment**.
Use caution and do not proceed until the indicated conditions or required procedures are
fully understood and met.
**CAUTION**: Indicates a hazardous situation where failure to follow instructions or use
proper materials may result in **minor injury or damage to equipment**. Do not proceed
until the indicated conditions or required procedures are fully understood and met.
**NOTE:** Indicates an important step or additional information that highlights best practices
or procedures. To avoid damage to equipment and achieve optimum results, follow the
instructions carefully.
Les symboles suivants sont utilisés dans ce document pour indiquer des informations importantes:
**AVERTISSEMENT:** Indique une situation dangereuse dans laquelle le non-respect des
instructions ou l'utilisation de matériaux inappropriés peut entraîner **des blessures**
**graves, la mort ou la destruction de l'équipement**. Soyez prudent et ne continuez pas
tant que les conditions indiquées ou les procédures requises ne sont pas entièrement
comprises et respectées.
**ATTENTION**: Indique une situation dangereuse dans laquelle le non-respect des
instructions ou l'utilisation de matériaux inappropriés peut entraîner **des blessures**
**légères ou des dommages matériels**. Ne continuez pas tant que les conditions indiquées
ou les procédures requises ne sont pas entièrement comprises et respectées.
**NOTE:** Indique une étape importante ou des informations supplémentaires qui **mettent**
**en évidence les meilleures pratiques ou procédures**. Pour éviter d'endommager
l'équipement et obtenir des résultats optimaux, suivez attentivement les instructions.
---
## C.Documentation
**WARNING:** Follow all safety precautions in the owner’s manual, installation manual, and other
documents included with the equipment.
**WARNING**: Read all instructions and cautionary markings in this document and on the
equipment before installing the equipment. Failure to follow any of the instructions or warnings in
this document may result in electric shock, serious injury, or loss of life.
**AVERTISSEMENT**: Suivez toutes les précautions de sécurité contenues dans le manuel du
propriétaire, le manuel d’installation et les autres documents fournis avec l’équipement.
**AVERTISSEMENT**: Lisez toutes les instructions et mises en garde contenues dans ce document
et sur l'équipement avant installation. Le non-respect des instructions ou des avertissements de ce
document peut entraîner un choc électrique, des blessures graves, voire la mort.
## D.Service Contact Information
For assistance with installation, service, or repairs, you can reach Lunar Energy Installer Support
between 8 AM and 7 PM (PST) through the following methods:
○ Telephone: 650-535-1969
○ Email: installersupport@lunarenergy.com
○ Lunar Installation App (live-chat, phone or email)
When reaching out to Lunar Energy Installer Support for service or parts inquiries, please have the
product model and serial number, readily available.
## E.Safety Rules and General Information
All installations must conform to the laws, regulations, codes and standards applicable in the
jurisdiction of installation. Before starting an installation, consult a local building or electrical inspector
for local codes, permit and inspection requirements.
| Jurisdiction | Code |
| --- | --- |
| United States | National Electrical Code(ANSI/NFPA 70) |
| Canada | Canadian Electrical Code(CSA Z462, CSA C22.1, Part 1) |
---
| WARNING: Only qualified electrical personnel should install, troubleshoot, service, or replace the equipment. |
| --- |
| WARNING: Apply appropriate personal protective equipment(PPE)和 follow safe electrical work practices. |
| WARNING: Turn off all power supplying this equipment before working on or inside the equipment. Always use a properly-rated voltage sensing device to confirm power is off.Replace all devices,covers,and doors before turning on power to the equipment. |
| WARNING: To protect the equipment and its components from damage when transporting, handle with care.To help prevent damage,leave all equipment in its shipping packaging until it is ready to be installed. |
| WARNING: Inspect the equipment for damage before installing.Do not install the equipment if it has been damaged in any way. |
| WARNING: Do not attempt to open,disassemble,repair,tamperwith,or modify the equipment.The equipment contains no user-serviceable or field-replaceable parts.Contact the installer who installed the equipment for any repairs. |
| WARNING:Do not insert foreign objects into any part of the equipment. |
| WARNING:Do not expose the equipment or any of its components to direct flame. |
| WARNING:This product is not intended to be used in a critical life support application.Failure to adhere to this warning could result in loss of life or serious injury. |
| WARNING:Prop 65 Warning for California Residents:This product may contain chemicals known to the State of California to cause cancer,birth defects,and other reproductive harm. |
| CAUTION:Do not use parts or accessories other than those specified for use with the equipment. |
| CAUTION:Do not paint any part of the equipment,including any internal or external components or covers. |
| CAUTION:Do not use solvents to clean the equipment,or expose the equipment to flammable or harsh chemicals or vapors.Do not allow petroleum-based paints,solvents,or sprays to contact nonmetallic parts of the equipment. |
---
| AVERTISSEMENT: Seul un electricien qualifié doit installer, dépanner, entretenir ou remplacer l'equipement. |
| --- |
| AVERTISSEMENT: Appliquiez les équipements de protection individuelle (EPI) appropriés et suivez les procédures de sécurité électrique. |
| AVERTISSEMENT: Coupez toute alimentation électrique alimentant cet équipement avant de travailler sur ou à l'intérieur de l'equipement. Utilisez toujours un dispositif de détention de tension correctement calibré pour confirmer que l'alimentation est coupée. Remplacez tous les appareils, capots et portes avant de mettre l'equipement sous tension. |
| AVERTISSEMENT: Pour protéger l'equipement et ses composants contre les dommages liés au transport, manipulez avec précaution. Pour éviter tout dommage, laissez l'equipement dans son emballage d'origine jusqu'à ce qu'il soit prêt à être installé. |
| AVERTISSEMENT: Inspectez l'equipement pour déceler tout dommage avant installation. N'installez pas l'equipement s'il a été endommagé de quelque manière que ce soit. |
| AVERTISSEMENT: N'essayez pas d'ouvrir, de démonter, de réparer, de falsifier ou de modifier l'equipement. L'equipement ne contient aucune pièce réparable par l'utilisateur. Contactez l'installateur qui a installé l'equipement pour toute réparation. |
| AVERTISSEMENT: N'insérez aucun objet étranger dans l'equipement. |
| AVERTISSEMENT: N'exposez pas l'equipement ou l'un de ses composants à une source de chaleur directe. |
| AVERTISSEMENT: Ce produit n'est pas destiné à être utilisé dans une application critique de survie. Le non-respect de cet avertissement pourrait entraîner la mort ou des blessures graves. |
| AVERTISSEMENT: Avertissement Prop 65 pour les résidents de Californie : ce produit peut contenir des produits chimiques connus par l'État de Californie pour provoquer le cancer, des malformations congénitales et d'autres problèmes de reproduction. |
| ATTENTION: Ne pas utiliser de pièces ou accessoires autres que ceux spécifisés pour être utilisés avec l'equipement. |
| ATTENTION: Ne peignez aucune partie de l'equipement, y compris les composants ou couvercles internes ou externes. |
| ATTENTION: N'utilisez pas de solvants pour nettoyer l'equipement et n'exposez pas l'equipement à des produits chimiques ou des vapeurs inflammables ou agressifs. Ne laissez pas les peintures, solvants ou sprays à base de pétrole entrer en contact avec les parties non métalliques de l'equipement. |
---
## F. Storage, Installation, and Use
| WARNING:Do not store the equipment for more than six(6)months,or permit the electrical feed to the equipment to be disconnected for more than six(6)months,without placing the equipment into a storage condition as approved by Lunar Energy. |
| --- |
| WARNING:These service instructions are for use by qualified personnel only.To reduce the risk of electric shock,do not perform any servicing other than that specified in the operating instructions unless you are qualified to do so. |
| WARNING:Before making any connections,verify that the circuit breaker(s)are in the off position.Double check all wiring before applying power. |
| WARNING:Before making any connections,verify that the inverter rotary disconnect switch is in the OFF position. |
| WARNING:Ensure that all wiring is correct and that none of the wires are pinched or damaged. |
| WARNING:Do not connect this equipment to an electrical system with other power production sources unless directed to do so in these installation instructions. |
| WARNING:Only use approved devices,fasteners,and wiring as outlined in these instructions. |
| WARNING:Ensure that the equipment is properly grounded before applying power. |
| WARNING:Always de-energize the equipment before servicing.It is best practice to de-energize the equipment before disconnecting it. |
| WARNING:Only perform service on the equipment as detailed in these instructions,or under the instruction of Lunar Energy. |
| WARNING:Ensure that power coming from any connected equipment is de-energized before servicing or installing. |
| WARNING:Do not install the equipment or any of its components near heating equipment. |
| WARNING:Do not immerse the equipment or any of its components in water or other fluids. |
| WARNING:Do not open or disassemble the equipment,or any of its components,outside of what is instructed in this manual. |
| WARNING:Do not inflict mechanical damage(such as dropping,deforming,impacting,cutting,or penetrating with a sharp object)on the equipment or otherwise modify it. |
| WARNING:Do not heat the equipment.Keep it away from sources of ignition and operate it only. |
**WARNING**: Do not heat the equipment. Keep it away from sources of ignition and operate it only within the permissible temperature range.
**WARNING**: Do not short-circuit the equipment.
**WARNING**: Do not use equipment in a manner not specified by the manufacturer. Doing so may
cause injury or loss of life, or damage to equipment.
**WARNING**: Do not use equipment if it is defective, appears to be damaged, or fails to operate.
**WARNING**: Risk of electric shock and fire. Use only with PV modules with a maximum system
voltage rating of 600V or higher.
**WARNING**: When a ground fault is indicated, normally ungrounded conductors may be
grounded.
**CAUTION**: Ensure that all wire connections are tightened to the factory-specified torque value.
**NOTE**: The equipment is intended to operate with a connection to the Internet. Failure to
maintain an Internet connection may affect the warranty.
**NOTE**: The Lunar Battery will not operate as intended unless installed with the Lunar Bridge,
Lunar Meter Socket Adapter Controller, Lunar Maximizers, and Lunar Maximizer Hub.
**AVERTISSEMENT**: Ne stockez pas l'équipement pendant plus de six (6) mois, et ne permettez
pas que l'alimentation électrique de l'équipement soit déconnectée pendant plus de six (6) mois,
sans placer l'équipement dans un état de stockage approuvé par Lunar Energy.
**AVERTISSEMENT**: Avant d'effectuer des connexions, vérifiez que le(s) disjoncteur(s) est (sont)
en position d'arrêt. Vérifiez à nouveau tout le câblage avant de mettre sous tension.
**AVERTISSEMENT**: Avant d'effectuer des connexions, vérifiez que le sectionneur rotatif de
l'onduleur est en position OFF.
**AVERTISSEMENT**: Assurez-vous que tout le câblage est correct et qu’aucun fil n’est pincé ou
endommagé.
**AVERTISSEMENT**: Ne connectez pas cet équipement à un système électrique avec d’autres
sources de production d’énergie, sauf indication contraire dans ces instructions d’installation.
**AVERTISSEMENT**: Utilisez uniquement des appareils, des fixations et un câblage approuvés,
comme indiqué dans ces instructions.
**AVERTISSEMENT**: Assurez-vous que l'équipement est correctement relié à la terre avant de
mettre sous tension.
---
| AVERTISSEMENT: Mettez toujours l'équipement hors tension avant de procéder à l'entretien. Il est recommandé de mettre l'équipement hors tension avant de le débrancher. |
| --- |
| AVERTISSEMENT: N'effectuez l'entretien de l'équipement que comme détaillé dans ces instructions ou sous les instructions d'une personne qualifiée par Lunar Energy. |
| AVERTISSEMENT: Assurez-vous que l'alimentation provenant de tout équipement connecté est hors tension avant l'entretien ou l'installation. |
| AVERTISSEMENT: N'installez pas l'équipement ou l'un de ses composants à proximité d'un équipement de chauffage. |
| AVERTISSEMENT: Ne plongez pas l'équipement ou l'un de ses composants dans l'eau ou autres liquides. |
| AVERTISSEMENT: N'ouvrez pas et ne démontez pas l'équipement, ou l'un de ses composants, en dehors de ce qui est indiqué dans ce manuel. |
| AVERTISSEMENT: N'infligez pas de dommages mécaniques (tels que chute, déformation, impact, coupure ou pénétration avec un objet pointu) à l'équipement Ne modifiez pas l'équipement de quelque manière que ce soit. |
| AVERTISSEMENT: Ne chauffez pas l'équipement. Tenez-le à l'écart des sources de chaleur et faites-le fonctionner uniquement dans la plage de température autorisée. |
| AVERTISSEMENT: Ne court-circuitez pas l'équipement. |
| AVERTISSEMENT: N'utilisez pas l'équipement d’une manière non spécifiée par le fabricant. Cela pourrait provoquer des blessures, voire la mort, ou endommager l'équipement. |
| AVERTISSEMENT: N'utilisez pas l'équipement s'il est défectueux, s'il semble endommagé ou s'il ne fonctionne pas. |
| AVERTISSEMENT: Risque de choc électrique et d'incendie. Utiliser uniquement avec des modules PhotoVoltaïques avec une tension nominale maximale du système de 600 V ou plus. |
| ATTENTION: Assurez-vous que toutes les connexions filaires sont serrées au couple spécifié en usine. |
| NOTE: L'équipement est destiné à fonctionner avec une connexion à Internet. Le fait de ne pas maintenir une connexion Internet peut affacter la garantie. |
| NOTE: La batterie Lunar ne fonctionnera pas comme prévu à moins d'être installée avec le Lunar Bridge, les Lunar Maximizers et le Lunar Maximizer Hub. |
---
## G.Environmental Conditions
**WARNING**: Do not expose the equipment to ambient temperatures outside of the storage and
operating conditions outlined in this document.
**WARNING**: The equipment is certified for indoor and outdoor installation. However, the
equipment should be installed in a location that prevents damage from flooding, directed water
flow, or pressurized water. Ensure that no water sources are above or near the equipment, including
downspouts or large sprinklers.
**CAUTION**: To ensure proper ventilation, do not allow debris to accumulate on or around the
equipment.
**AVERTISSEMENT**: N'exposez pas l'équipement à des températures en dehors des conditions de
stockage et de fonctionnement décrites dans ce document.
**AVERTISSEMENT**: L'équipement est certifié pour une installation intérieure et extérieure.
Cependant, l'équipement doit être installé dans un endroit qui évite les dommages dus aux
inondations. Assurez-vous qu'aucune source d'eau ne se trouve au-dessus ou à proximité de
l'équipement, y compris les descentes pluviales, les arroseurs ou les robinets.
**ATTENTION**: Pour garantir une ventilation adéquate, ne laissez pas les débris s’accumuler sur
ou autour de l’équipement.
---
## H.Warning Symbols
These symbols used in labels on the product indicate important safety information:
**CAUTION**: Indicates caution is necessary when operating the device or the control near
the symbol.
**RISK OF ELECTRIC SHOCK**: Indicates components that present risk of electric shock.
**GROUNDING TERMINAL**: Indicates location of grounding connection on the equipment.
**REFER TO INSTRUCTIONS**: Indicates that the user should refer to operating or
installation instructions before proceeding.
**OFF**: Indicates the OFF position
**ON**: Indicates the ON position
Ces symboles utilisés sur les étiquettes du produit indiquent des informations de sécurité
importantes:
**ATTENTION**: Indique qu'une ATTENTION est nécessaire lors de l'utilisation de l'appareil
ou de la commande à proximité du symbole.
**RISQUE DE CHOC ELECTRIQUE**: Indique les composants présentant un risque de choc
électrique.
**BORNE DE MISE À LA TERRE**: Indique l'emplacement de la connexion à la terre sur
l'équipement.
**RÉFÉREZ-VOUS AUX INSTRUCTIONS**: Indique que l'utilisateur doit se référer aux
instructions d'utilisation ou d'installation avant de procéder.
---
| O | HORS TENSION: Indique la position HORS TENSION |
| --- | --- |
| I | EN MARCHE: Indique la position EN MARCHE |
## I. Qualified Personnel
This manual and the procedures described within are intended for use only by qualified installers and
service technicians. Such qualified personnel must possess the following skills and experience:
● Knowledge of the principles and operation of on-grid and off-grid (backup) electrical systems.
● Knowledge of the risks associated with installing and using electrical devices and acceptable
mitigation methods.
● Knowledge of installation of electrical devices.
● Knowledge of and adherence to all applicable safety precautions and best practices.
---
## Regulatory Statements
## A.Compliance Summary
The product is listed to the applicable product standards as shown in the following table.
| Safety | System(ACESS):CAN/UL9540,UL9540A(indoor and outdoor),UL1741CRDPCS,UL3141(Issue1) |
| --- | --- |
| Safety | DC-ESSUnit(DCExpansionUnit):CAN/UL9540,UL9540A(indoorandoutdoor),CAN/UL1973,UN38.3 |
| Safety | Inverter:UL1741,UL1741SB,UL1699B(PhotovoltaicDCArc-FaultCircuit-ProtectionType1),CSA C22.2.No.107.1 |
| Safety | FunctionalSafety:UL991,UL1998,CSA C22.2No.0.8-19 |
| GridInterconnection | IEEE1547.1-2020,IEEE1547-2018(Normal/Abnormalperformancecategory:B/III),SunSpecIEEE2030.5/CSIP,CARule21 |
| EMC | FCCPart15ClassB |
| Environmental | RoHSDirective2011/65/EU |
The following safety functions were evaluated and found compliant to the Functional Safety standards
noted above (CSA Group Report 80122017, Project 80259629, dated October 20, 2025):
| Inverter | Remote Rapid Shutdown
Inverter manual disconnect
Residual Current Detection
Ground Insulation Resistance Measurement(GIRM)
Arc Fault Current Interruption(AFCI) |
| --- | --- |
| DC ESS | Cell over and under voltage
Cell over temperature,under temperature while charging and discharging
Battery overcurrent during charge and discharge |
| Maximizer | PVRSS-Rapid Shutdown Triggered |
---
## B.Compliance Statements
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
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.
This device 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 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.
**CAUTION**: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
RF Exposure Information:
This device complies with FCC radiation exposure limits set forth for an uncontrolled
environment. In order to avoid the possibility of exceeding the FCC radio frequency exposure
limits, human proximity to the antenna shall not be less than 20cm (8 inches) during normal
operation.
## 2. ISED Notice:
This device complies with Innovation, Science and Economic Development Canada
license-exempt RSS standard(s). Operation is subject to the following two conditions:
---
this device may not cause interference, and this device must accept any interference, including
interference that may cause undesired operation of the device.
*Le présent appareil est conforme aux CNR Innovation, Sciences et Développement économique*
*Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux*
*deux conditions suivantes: l'appareil ne doit pas produire de brouillage, et*
*l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage*
*est susceptible d'en.*
This Class B digital apparatus complies with Canadian ICES-003.
*Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.*
## ISED Radiation Exposure Statement
This device complies with RSS-102 radiation exposure limits set forth for an uncontrolled
environment. In order to avoid the possibility of exceeding the ISED radio frequency exposure
limits, human proximity to the antenna shall not be less than 20cm (8 inches) during normal
operation.
*Cet appareil est conforme aux limites d'exposition aux rayonnements de la CNR-102 définies*
*pour un environnement non contrôlé. Afin d'éviter la possibilité de dépasser les limites*
*d'exposition aux fréquences radio de la CNR-102, la proximité humaine à l'antenne ne doit pas*
*être inférieure à 20 cm (8 pouces) pendant le fonctionnement normal.*
## 3. Signage
Where NFPA 855 signage is required, the installer shall provide it.
---
## Lunar System Specifications
| System(ACESS) | | | | | |
| --- | --- | --- | --- | --- | --- |
| Model Number | L2-ESS-10KWH | L2-ESS-15KWH | L2-ESS-20KWH* | L2-ESS-20KWH* | L2-ESS-20KWH* |
| DC-ESS | - | | | 1xLE-DC-UNIT | 2xLE-DC-UNIT |
| Rated Energy | 10kWh | 15kWh | 20kWh | 25kWh | 30kWh |
| Maximum Continuous AC Power, on-grid | 9.6kW full sun5kW no sun | 9.6kW full sun7.5kW no sun | 9.6kWFull sun andno sun | 9.6kWFull sun andno sun | 9.6kWFull sun andno sun |
| Warranty | 12.5 Years38 MWh AC throughput | 12.5 Years56 MWh AC throughput | 12.5 Years75 MWh AC throughput | 12.5 year94 MWh AC throughput | 12.5 years113 MWh AC throughput |
| Customer Interface | Customer App, Installer App,Fleet Web Portal,APIs,LED | | | | |
| Operating Modes | Lunar AI,Self-Consumption,Time-of-use,Backup | | | | |
| Advanced Software Features | Outage Watch,Virtual Power Plant(VPP)enabled, | | | | |
| Communication | Wi-Fi,4G/LTE(CATM1),Ethernet | | | | |
*The L2-ESS-20KWH AC-ESS is used with up to two (2) DC-ESS Units, Model LE-DC-UNIT. When used with
these expansion units, the system capacity increases to 25 KWh (1 DC Expansion Unit) and 30 kWh (2 DC
Expansion Units).
| Inverter Block | |
| --- | --- |
| Model Number | 10-005025 |
| Nominal Voltage | 120/240 Vac Split Phase |
| Output Voltage Range | 210 Vac - 264 Vac |
---
| Grid Frequency | 60Hz |
| --- | --- |
| Peak AC Power,off-grid | 15kW for 5s |
| Max Load Start Capability | 134LRA1 |
| Maximum Continuous AC Current | 40A |
| Overcurrent Protection Device | 50A Breaker |
| Operating Input Voltage | 380-450Vdc |
| Maximum DC Input Current | 37.5A(PV),30A(battery) |
| Maximum PV Input Power | 15kWdc |
| Total Harmonic Distortion | <5% |
| Power Factor | 0.85 lagging to 0.85 leading |
| PV Rapid Shutdown Switch and System Disconnect | Yes,lockable |
| CEC Solar to Home/Grid Efficiency | 95.5% |
1
*Subject to base load at the time of motor start.*
**DC-ESS Unit (DC ESS)**
| Model Number | LE-DC-UNIT |
| --- | --- |
| Rated Energy | 5kWh |
| Operating Voltage Range | 190-225Vdc |
| Maximum Continuous Charge Power | 2.5kW |
| Maximum Continuous Discharge Power, on-grid | 2.5kW |
| Maximum Continuous Discharge Power, off-grid | 2.5kW |
| Peak Discharge Power, off-grid | 3.75kW(5s) |
| Chemistry | Lithium Iron Phosphate(LFP) |
---
| Environmental | |
| --- | --- |
| Ingress Rating | ESS: Type 3R
Inverter Block: Type 3R
DC ESS Unit: Type 3R |
| Operating Temperatures | 4°F to 122°F(-20°C to 50°C)3 |
| Storage Conditions | Absolute Limits:-4°F to 140°F(-20°C to 60°C)<95%RH
1 month:-4°F to 113°F(-20°C to 45°C)<60%RH
6 months:-4°F to 95°F(-20°C to 35°C)<60%RH
Up to 24 months:65°F to 82°F(18°C to 28°C)<60%RH |
| Altitude | Up to 9843 ft(3000m) |
$$
4^{\circ}{\sf F}
$$
$$
122^{\circ}\mathsf{F}
$$
$$
-20^{\circ}\mathbb{C}
$$
$$
50^{\circ}\mathbb{C})^{3}
$$
$$
-4^{\circ}\mathsf{F}
$$
$$
140^{\circ}\mathsf{F}
$$
$$
-20^{\circ}\mathbb{C}
$$
$$
-4^{\circ}\mathsf{F}
$$
$$
60^{\circ}C)<95\%R
$$
$$
13^{\circ}\mathsf{F}
$$
$$
(-20^{\circ}\mathrm{C}
$$
$$
45^{\circ}\mathrm{C})
$$
$$
-4\ ^{\circ}\mathsf{F}
$$
$$
95\,^{\circ}\mathsf{F}
$$
$$
-20^{\circ}\mathbb{C}
$$
$$
35^{\circ}\mathbb{C})
$$
$$
65^{\circ}\mathsf{F}
$$
$$
82^{\circ}\mathsf{F}
$$
$$
1^{{\circ}}\ ^{\ \mathsf{C}}
$$
$$
28^{\circ}\mathbb{C})
$$
3
*Performance may be de-rated at operating temperatures below 0°C (32°F) or greater than 45°C (113°F).*
$$
O^{\circ}C
$$
$$
45\,^{\circ}C
$$
---
| Mechanical | | | | | |
| --- | --- | --- | --- | --- | --- |
| Model Number | L2-ESS-10KWH | L2-ESS-15KWH | L2-ESS-20KWH | L2-ESS-20KWH | L2-ESS-20KWH |
| DC-ESS Unit | | | | (1) LE-DC-UNIT | (2) LE-DC-UNIT |
| Dimension(HxWxD) | Inverter Block:10.6"x24.4"x13.5"(270mmx619mmx344mm) | | | | |
| Dimension(HxWxD) | DC-ESS Unit:10.6"x24.4"x13.5"(270mmx619mmx344mm) | | | | |
| Dimension(HxWxD) | Top+Bottom Cover:3"x24.4"x13.5"(75mmx619mmx344mm) | | | | |
| Dimension(HxWxD) | 34.8"x24.4"x13.5"(884mmx619mmx344mm) | 45.5"x24.4"x13.5"(1156mmx619mmx344mm) | 56.1"x24.4"x13.5"(1425mmx619mmx344) | 66.8"x24.4"x13.5"(1696mmx619mmx344) | 77.4"x24.4"x13.5"(1967mmx619mmx344) |
| Inverter Mass | 42lb(19kg) | | | | |
| DC ESS Mass | 106lb(48kg) | | | | |
| Total Assembly Mass(包括 brackets and covers) | 305lb(139kg) | 421lb(191kg) | 540lb(245kg) | 659lb(299kg) | 778lb(354kg) |
| Mounting | Wall or floor mount | | | | |
$$
1 0. 6 ^ {\prime \prime} \times 2 4. 4 ^ {\prime \prime} \times 1 3. 5 ^ {\prime \prime}
$$
$$
10.6^{n}\times24.4^{n}\times13.5^{n}
$$
$$
3^{n}\times24.4^{n}\times13.5^{n}
$$
$$
34.8\times24.4
$$
$$
77.4\stackrel\ast\times\mathrm24.4\
$$
---
## Operational Specifications
See Compliance Summary, Performance Specifications, and ***Appendix A: Grid Interconnection Settings*** for
the specific grid connectivity requirements as well as standard and test procedures to which the product was
designed and evaluated.
The factory locked settings for the Lunar Energy Storage System are detailed in Appendix A. Note that
modifications to the settings listed in this section can only be made by a Lunar Energy qualified engineer.
Curtailment to Inverter real power output as well as site export, may be modified by the Lunar Install App or
the Lunar Gridshare platform. These user interfaces are available to installers with approved login credentials.
The PV components in the Lunar Battery are a functionally grounded system.
The Lunar Battery must have neutral and ground conductors separated at the device. Neutral and earth shall
only be bonded at the Service Disconnect for the site.
Arc Fault Detection and Ground Fault Detection checks are initiated when the product is turned ON (via the
inverter rotary switch, provided the system is fully installed and commissioned). Both Arc Fault Detection and
Ground Fault Detection operate continuously, and both Arc Fault Detection and Ground Fault Detection
circuits self test runs every hour, while the system remains active.
Refer to the ***Troubleshooting*** section of this manual for information on LED indicators, including AFCI alerts,
and recommended actions for addressing Arc Fault and Ground Fault detections.
## Component Overview
The Lunar Battery is the name for the Energy Storage System that includes all of the following components:
● DC-ESS Unit (DC-ESS Unit)
● Inverter
● Trunk Harness
● Aesthetic Covers (Battery and Inverter)
● Wall Brackets (Battery and Inverter)
● Foot Bracket
● Bottom Cover
● Top Cover
● Access door on Inverter Cover
● Rotary switch on Inverter
---
## System Overview
The Lunar Battery is a component of the Lunar Energy integrated solar battery and energy storage system.
The system consists of a smart hybrid inverter, a modular battery system, a microgrid interconnect device,
and module-level power electronics that allow control of solar generation, energy storage, and loads.
## A.System Diagrams
**Whole Home: Lunar System with Service Disconnect at Lunar Bridge**
**Whole Home: Lunar System with Service Disconnect at Utility Meter**
---
## Partial Home: Lunar System with Service Disconnect at Lunar Bridge
---
## B.Battery System Configurations
The Lunar Battery is a modular energy storage system, consisting of a hybrid inverter and multiple
DC-ESS Units. The Lunar Battery is configurable to allow installations with a capacity of 10, 15,
20kWh. The 20kWh configuration can be further expanded with DC-ESS to enable 25 and 30kWh
aggregate energy with a single vertical column..
| Package | Content | Lunar Part Number | |
| --- | --- | --- | --- |
| Inverter | Inverter BlockWall BracketAesthetic CoverInverter DoorBug BarriersConduit Covers | 90-003540 | |
| 5kWh DC-ESS Unit | 5kWhDC-ESSUnitWall BracketAesthetic Cover | 90-06948A | |
| Hardware Kit | Top CoverBottom Cover(with foot bracketpre-assembled)Trunk HarnessWall Bracket Screws | 10kWh | 90-07282A |
| Hardware Kit | Top CoverBottom Cover(with foot bracketpre-assembled)Trunk HarnessWall Bracket Screws | 15kWh | 90-06823A |
| Hardware Kit | Top CoverBottom Cover(with foot bracketpre-assembled)Trunk HarnessWall Bracket Screws | 20kWh | 90-001223 |
| Hardware Kit | Top CoverBottom Cover(with foot bracketpre-assembled)Trunk HarnessWall Bracket Screws | 25kWh | 90-07111A |
| Hardware Kit | Top CoverBottom Cover(with foot bracketpre-assembled)Trunk HarnessWall Bracket Screws | 30kWh | 90-07112A |
---
## C.Solar System Configurations
Any solar installation connected to a Lunar Battery must utilize Lunar Maximizers and Lunar Maximizer
Hub, and the installation must comply with the guidelines in the ***Lunar Maximizer and Maximizer Hub***
***Installation Manual***. Lunar Maximizers are module-level power electronics designed for DC-to-DC
conversion. It is important to note that the Lunar Battery’s DC connections may only be made to Lunar
Maximizers and Lunar DC-ESS Units; direct connections to PV modules are strictly prohibited.
***The Lunar Maximizer and Maximizer Hub Installation Manual*** outline compatible PV modules, as well
as PV stringing requirements, such as minimum and maximum series string length.
For maximum PV DC power input allowances, see ***Lunar System Specifications, Lunar Inverter***
section.
## D.Battery to Lunar Maximizer & Maximizer Hub Communication
The Lunar Battery communicates with the Maximizer Hub through Power-line Communication (PLC)
over the field-installed PV DC circuit. Additionally, the wireless mesh network among the Lunar
Maximizers communicates information with the Lunar Battery via the Maximizer Hub, utilizing the
same PLC circuit.
## E.Microgrid Interconnect Device (MID)
The Lunar Battery requires installation with a microgrid interconnect device, specifically either the
Lunar Bridge or the Lunar Meter Socket Adapter Controller (MSAC) used with the ConnectDER
IslanDER meter socket adapter. Further details on these MID components can be found in the Lunar
Bridge Installation Manual or the Lunar MSAC Installation Manual.
## F. Battery to Lunar Bridge Connections
The Lunar Battery connects to the Lunar Bridge via the following connections:
## Low voltage connections:
The cable is a 4-wire configuration, comprising a 13V+ power circuit, a signal ground, and two wires
for the CAN Hi and CAN Low communication circuit.
## High voltage connections:
The Lunar Battery AC circuit and its overcurrent protection must be installed on the backup side, which
is the load side of the relay within the Lunar Bridge. For simplicity, the easiest installation method is usually to place the ESS breaker directly inside the Lunar Bridge. Alternatively, the ESS breaker can be
installed in a subpanel that connects to the Lunar Bridge.
**WARNING**: Ensure the grounded conductor is properly connected to the installation grounding
conductor at the service disconnect.
**AVERTISSEMENT**: Assurez-vous que le conducteur de terre est correctement connecté au
conducteur de mise à la terre de l'installation au niveau du sectionneur de service.
## G.Lunar Battery Communication
The Lunar system is equipped with LTE CAT M1 cellular connectivity and includes a secondary Wi-Fi
access point. The secondary Wi-Fi point is used for commissioning the system with the Lunar Installer
app.
The preferred connection types are:
● 2.4 GHz Wi-Fi
● Ethernet connection (wired)
---
## Site Requirements
## A.Location
The vertical stack consisting of the Lunar inverter and multiple DC-ESS Units can be installed indoors
or outdoors, and can be wall-mounted or floor-mounted. The install location must abide by the
clearances, access, and wiring configurations outlined in the ***Site Requirements; Section B. System***
***Clearances***. Additionally, the installation location must also be consistent with the environmental
requirements for the system, including temperature and moisture, as well as the system’s ingress
rating.
The units are only intended to be installed in attached or detached garages, sheds, enclosed utility
closets, basements, storage or utility spaces within dwelling units and are not intended for installation
in habitable spaces and living spaces in dwelling units.
**NOTE**: All installations must conform to the laws, regulations, codes and standards applicable in
the jurisdiction of installation. Smoke alarms are to be provided in the residence in accordance with
local building, fire, and installation codes.
**NOTE**: In Canada, CSA C22.1 limits the indoor installation of residential ESS to a garage, a free
standing structure or storage building
**NOTE**: Toutes les installations doivent être conformes aux lois, réglementations, codes et
normes applicables dans la juridiction d'installation. Des détecteurs de fumée doivent être fournis
dans la résidence conformément aux codes locaux du bâtiment, d'incendie et d'installation.
**NOTE**: Au Canada, la CSA C22.1 limite l'installation intérieure des SSE résidentiels à un garage,
une structure autoportante ou un bâtiment de stockage.
---
## B.System Clearances
The install location must allow for certain minimum and maximum distances between system
components and between the equipment and architectural features such as walls, columns, ceilings,
or from openings (e.g. windows, doors, HVAC inlets or other operable openings). These distances are
required for installer, operator and service access, proper ventilation, as well as for Compliance and
Fire Code setback requirements. The install location must comply with all local codes for access to
equipment doors, panels and controls. Refer to the figure and table below when planning the install
locations of system components.
**Example shows a 20kWh Lunar system (4 x 5kWh DC-ESS Units)*
---
| AC ESS Clearances | | |
| --- | --- | --- |
| A | Minimum wall space for installation | 36.4 in wide(92cm wide)
Height depending on quantity of DC-ESS Units |
| B | Minimum clearance on sides of installed system | Minimum clearance of 6 in(15.2cm) to all obstructions.
Additional clearance is recommended but not required from any source that blows hot air towards the ESS.Exposure may result in power limiting behavior from the ESShot air coincides with hot weather and high power demands.
Minimum clearance to doors and windows directly entering the dwelling unit (not applicable to attached or detached garages):
•Abide by local Code required clearances |
| C | Minimum clearance above-installed system | 2.5 in(15cm) |
| D | Maximum height above ground/floor to bottom of ESS | For rotary switch on inverter to be 6'7" from grade:
L2-ESS-10kWh:50.4in(128cm)
L2-ESS-15kWh:39.7in(101cm)
L2-ESS-20kWh:29.1in(74cm)
L2-ESS-20kWh+(1)DC-ESS Unit(LE-DC-UNIT):18.5in(47cm)
L2-ESS-20kWh+(2)DC-ESS Units(LE-DC-UNIT):7.8in(20cm)
Where external RSID is field installed less than 6'-7" from grade:No limit |
| E | Minimum clearance in front of battery | Abide by local code required clearances |
| - | Minimum room size for indoor installation | 283 cu ft.(8.01m³) |
---
**NOTE**: Required separation distances to other ESS may be reduced to the above minimums
based upon large scale fire testing. Unit to Unit spacing is fixed by the mechanical interface of wall
brackets. Both the standalone DC-ESS Unit and the Lunar Battery system (AC ESS) consisting of a
hybrid inverter and multiple DC-ESS Units are tested according to ANSI/CAN/UL 9540A:2025 5th
Edition, Dated March 12, 2025 - Test Method for Evaluating Thermal Runaway Fire Propagation in
Battery Energy Storage Systems. CSA Group Projects 80257877 and 80257878, Laboratory Test
Data – UL 9540A Checklist and Test Result (Unit Level), dated November 18, 2025, are available
upon request.
**NOTE**: Les distances de séparation requises par rapport aux autres systèmes de stockage
d'énergie (SSE) peuvent être réduites aux minimums indiqués ci-dessus, sur la base d'essais au feu
à grande échelle. L'espacement entre les unités est fixé par l'interface mécanique des supports
muraux. L'unité de stockage d'énergie CC autonome et le système Lunar Battery, composé d'un
onduleur hybride et de plusieurs unités de SSE CC, sont testés conformément à la norme
ANSI/CAN/UL 9540A:2025, cinquième édition, datée du 12 mars 2025- Méthode d'essai pour
l'évaluation de la propagation d'un incendie par emballement thermique dans les systèmes de
stockage d'énergie par batterie. Projet du Groupe CSA 80257877 et 80257878, Données d'essais
en laboratoire – Liste de contrôle et résultats d'essai UL 9540A (niveau unité), 18 novembre 2025,
disponible sur demande.
## C.Maximum Distance between System Components
The following distances between Lunar system subcomponents and between the Lunar system and
the home electrical systems are supported. Wire selection must meet local codes and is in some cases
also based on the distance of the cable run.
Refer to the table below when planning the install locations of system components.
| Maximum Wire Lengths between System Components | | |
| --- | --- | --- |
| Wiring Distance | Wire Gauge | Maximum Wire Length |
| Inverter to Maximizer Hub | 12AWG-4AWG | 200ft(61m) |
| Inverter to Bridge Communication | Cat5e, Cat6, Cat6a, or 14-22AWG(shielded,twisted oruntwisted) | 95ft(29.5m) |
| Inverter to Bridge AC | 8AWG-4AWG | 95ft(29.5m) |
---
## D.Cooling & Ventilation
The Lunar inverter and DC-ESS Units are air-cooled and must be installed with the clearances
specified in ***Site Requirements, Section B: System Clearances*** and in a location that meets the
ambient temperature guidelines outlined in ***Site Requirements, Section D: Cooling & Ventilation***.
Mounting in direct sunlight is permitted; however, in hotter climates, this may reduce system operating
efficiency, peak power (DC & AC), and the product's lifespan. It is recommended to avoid direct
sunlight in these climates.
## E.Operating Temperature Range
The Lunar Battery is rated for continuous operation in ambient temperatures ranging from –4°F
(-20°C) to 122°F (50°C).
$$
(-20^{\circ}\mathbb{C})
$$
$$
122^{\circ}\mathsf{F}\,(50^{\circ}\mathsf{C})
$$
For optimum performance:
● In hot climates, install where shaded.
● In cold climates, install where protected from wind
Below 32°F (0°C), the batteries may begin to curtail peak charge power. Below 14°F (-10°C), the
batteries may begin to curtail peak discharge power.
$$
32^{\circ}\mathsf{F}\,(0^{\circ}\mathsf{C})
$$
$$
1 4 ^ {\circ} \mathrm {F} (- 1 0 ^ {\circ} \mathrm {C})
$$
Each individual DC-ESS Unit is equipped with a 90 Wt resistance heater, with power output
dynamically controlled based on the cell temperature measured from that specific DC-ESS Unit.
Above 113°F (45°C), the inverter and DC-ESS Units may begin to curtail peak power. The inverter will
decrease power to 3kW at a component measured temperature of 122°F (50°C).
$$
113^{\circ}\!\!\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 11^{\circ}
$$
$$
122^{\circ}\!\!\ \ \ \ \
$$
**NOTE**: System functions are determined based on internal component temperatures. Therefore
duration at a given ambient temperature impacts operation. Sustained ambient temperatures
outside of the ‘unrestricted operation’ zone are necessary to curtail system operation. Additionally,
sun, wind, or other environmental conditions at a given ambient temperature may alter the system
behavior.
**NOTE**: The Lunar Battery is warrantied for installation in direct sunlight; however, solar radiation
increases component temperatures.
**NOTE**: Les fonctions du système sont déterminées en fonction des températures des
composants internes. Par conséquent, la durée à une température ambiante donnée a un impact sur
le fonctionnement. Des températures ambiantes soutenues en dehors de la zone de « fonctionnement sans restriction » sont nécessaires pour réduire le fonctionnement du système. De
plus, le soleil, le vent ou d'autres conditions environnementales à une température ambiante
donnée peuvent modifier le comportement du système.
**NOTE**: La batterie Lunar est garantie pour une installation en plein soleil; cependant, le
rayonnement solaire augmente la température des composants.
## F. Placard & Directory Requirements
For systems governed by NEC Articles 705 (Interconnected Electric Power Production Sources), 706
(Energy Storage Systems), and 710 (Stand-Alone Systems), a placard or directory is required. This
placard must clearly indicate the location of the disconnecting means for each individual power
source. Please note that this placard is not provided by Lunar.
---
## Tools & Materials
## A.Required Tools
The following tools are the minimum required for installation of the Lunar inverter and DC-ESS Units.
Additional standard construction tools may be needed.
● Personal protective equipment rated for electrical installation (safety glasses, insulated gloves,
protective footwear)
● Drill with up to 1/4" diameter drill bits
$$
1/4^{\ 11}
$$
● Torque screwdriver up to 45 in-lbs with 1/8" hex, 4mm hex, and T25 hex
$$
1/8^{\ \ }
$$
● Wire stripper/cutter for 4 AWG - 24 AWG wires
● Multimeter
● Lunar Lifting Tool (90-07117A)
## B.Required Materials
The following materials are the minimum required for installation of the Lunar inverter and DC-ESS
Units. Additional standard materials and consumables may also be needed.
● Anchoring fasteners (refer to the ***Anchoring Details*** section)
● UL 514B electrical conduit, fittings, and adapters (3/4” - 1” trade size)
$$
(3/4^{\prime\prime}-1^{\prime\prime}
$$
**NOTE**: Metallic conduit required.
● Power connections: minimum 600V rated copper (Cu) cable
● Communication connections: 4-conductor shielded copper (Cu) cable (24 AWG - 14 AWG)
---
## Installation Preparation
## A.Open the Box and Inspect the DC-ESS Unit (DC-Expansion Unit)
Review the parts list to verify the box contents are complete. If any parts are missing, contact Lunar
Energy Install Support for assistance.
Inspect the contents for damage. If there is any visible damage, do not install the component, and
contact Lunar Energy Install Support to arrange the return of the damaged component. Refer to
www.lunarenergy.com for contact information and instructions for returns.
**WARNING**: If a component is damaged in any way, do not install the component. Contact Lunar
Energy Customer Service for assistance.
**AVERTISSEMENT**: Si un composant est endommagé de quelque manière que ce soit, ne
l’installez pas. Contactez le service client de Lunar Energy pour obtenir de l’aide.
---
## Mounting the Wall Brackets
For both wall-mounted and floor-mounted systems, there are two methods for assembling the wall brackets.
Wall-mounting and floor-mounting installation procedures for the Lunar DC-ESS Unit remain the same for the
15 - 30 kWh models. The example imagery shown in this section features a 20 kWh configuration.