SOLIS S6-EH1P3.8K-H-US User manual

Version 1.0, Release Date: 07,2023
User Manual
High Voltage Hybrid Single Phase
Residential Energy Storage Inverter
Applicable models
S6-EH1P3.8K-H-US
S6-EH1P5K-H-US
S6-EH1P7.6K-H-US
S6-EH1P10K-H-US
S6-EH1P11.4K-H-US
Applicable System
Single phase system

● Product specifications are subject to change without notice. Every attempt has been made
to make this document complete, accurate and up-to-date. Individuals reviewing this
document and installers or service personnel are cautioned, however, that Solis
reserves 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 material provided in this document.
● Solis accepts no liability for customers' failure to comply with the
instructions for correct installation and will not be held responsible for upstream or
downstream systems Solis equipment has supplied.
● The customer is fully liable for any modifications made to the system; therefore,
any hardware or software modification, manipulation, or alteration not expressly
approved by the manufacturer shall result in the immediate cancellation of the warranty.
● Given the countless possible system configurations and installation environments, it is
essential to verify adherence to the following:
● There is sufficient space suitable for housing the equipment.
● Airborne noise produced depending on the environment.
● Potential flammability hazards.
● Solis will not be held liable for defects or malfunctions arising from:
● Improper use of the equipment.
● Deterioration resulting from transportation or particular environmental conditions.
● Performing maintenance incorrectly or not at all.
● Tampering or unsafe repairs.
● Use or installation by unqualified persons.
● This product contains lethal voltages and should be installed by qualified electrical or
service personnel having experience with lethal voltages.
Important Notes

8 Appendix
7 Specifications
6 Troubleshooting
5 Commissioning
4 Installation
3 Overview
2 Safety
1 Introduction
Table of Contents

01-05
06
09
11
13
14
20
23
06
01
04
09-10
18
27
1.1 Product Overview
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1. Introduction
1.2 Inverter Wire Box and Connection Points
2. Safety & Warning
2.1 Safety
2.2 General Safety Instructions
3. Overview
3.1 Intelligent LED Indicators
4. Installation
4.1 Select a Location to Install the Inverter
4.2 Product Handling
4.4 Inverter Wiring Overview
4.6 PV Cable Installation
4.7 Rapid Shutdown
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08
2.3 Notice for Use
08
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19
4.5 External Grounding
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4.9 AC Wiring
31
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5. Commissioning
6. Troubleshooting
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7. Specifications
17
4.3 Mounting the Inverter
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5.1 Pre-Commissioning
5.2 Commissioning Procedure
Contents
2.4 Notice for Disposal
11-30
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04
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1.3 Product Features
1.4 Packaging
1.5 Tools Required for Installation
4.10 Inverter Communication
10
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3.2 Inverter Wire Box and Connection Points
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8. Appendix
05
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31
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31-36
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06-08
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05
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08
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2.5 Protection Circuitry and Controls
22
4.8 Battery Installation ………………………………………………………………………………………………………………
37-40
41-49
50-57

1.1 Inverter Description
The Solis S6 Hybrid series is designed for residential applications. The inverter can work
with high-voltage lithium ion batteries to maximize self-consumption and provide backup
power if the grid fails and there is not enough PV power to cover load demand.
This inverter can operate in both on-grid and off-grid applications.
The S6 hybrid series consists of the following inverter models: 3.8kW, 5kW, 7.6kW, 10kW,
and 11.4kW. The 3.8-5K models are of a similar but different hardware platform than the
7.6-11.4K models. The inverter comes with an integrated rapid shutdown transmitter.
Figure 1.1
Frontal View
Figure 1.2
Bottom View (Wire Box)
1
LED Status Indicators
DC Disconnect Switch AC Bypass Switch
Rapid Shutdown Initiation Switch
1 ½ in. Knockout
for AC Grid
1 ½ in. Knockout for AC Backup
Data Logger (USB)
1 in. Knockout for DC Battery
1 in. Knockout
for DC PV
½ in. Knockout
for Comm Cables
Bluetooth
Antenna
Solis Data Logger (sold separately)
½ in. Knockout
for Comm Cables
½ in. Knockout for External Rapid Shutdown Switch
User Manual
1. Introduction

Figure 1.3 Right Side View
Solis Data Logger (sold separately)
Figure 1.4 Left Side View
Mounting Bracket Hook
AC Bypass Switch
Rapid Shutdown Initiation Switch
1 in. Knockout for DC PV
Mounting Bracket Hook
2
DC Disconnect Switch
Carrying Handle
Carrying Handle
Solis Data Logger (sold separately)
1 ½ in. Knockout for AC Grid
User Manual
1. Introduction

Figure 1.5 Back View
Figure 1.6 Top View
3
1 ½ in. Knockout for AC Grid or Backup
Heat Sink for Convective Cooling
1 in. Knockout for DC Battery or PV
User Manual
1. Introduction

Inverter x1 Inverter Mounting Bracket x1 Stabilizing Set Screws x2
4
1.2 Components Included with the Inverter
If any of these items are missing, please contact your local Solis distributor or the Solis service team.
External Energy Meter x1 Current Transformers x2
1/2 inch Cable Glands x2
Terminal Pins x20 Torqx T20 Tool x1
1.3 Tools Required for Inverter Installation
Technician Screwdriver Torqx T20 Screwdriver Wire Strippers 12AWG to 6AWG Wire Strippers 20AWG to 10AWG
Drill and Impact Driver
Multimeter (AC/DC amps)
Channel Locks
Smartphone
(for commissioning)
Torque Wrench Screwdriver
RJ45 Crimping Tool
(for parallel inverter comms only)
Ratcheting Crimper Bubble Level
User Manual
1. Introduction

● Use the original box to repackage the inverter, seal with adhesive tape with the desiccant
inside the box.
● Store the inverter in a clean and dry place, free of dust and dirt. The storage temperature
must be between -40~158°F and humidity should be between 0 to 100%, non-condensing.
● Do not stack more than two (2) inverters high on a single pallet. Do not stack more than
2 pallets high.
● Keep the box(es) away from corrosive materials to avoid damage to the inverter enclosure.
● Inspect the packaging regularly. If packaging is damaged (wet, pest damages, etc.),
repackage the inverter immediately.
● Store inverters on a flat, hard surface -- not inclined or upside down.
● Do not remove the desiccant packet that is included with the inverter. It is included to
ensure that any residual moisture is absorbed quickly.
● Restarting after a long period of non-use requires the equipment be inspected and, in some
cases, the removal of oxidation and dust that has settled inside the equipment will be
required.
● Perform an annual visual inspection of the inverter box for signs of damage
● If the inverter has been removed from the box and then replaced, put desiccant packets in the
inverter wire box to ensure the internal components stay dry
● Do not store the inverter outside or in a place that does not have environmental controls.
1.4 Inverter Storage
DO NOT STACK
MORE THAN HIGH
2
5
● If the inverter is not installed immediately, please abide by the storage instructions and
environmental conditions listed below.
User Manual
1. Introduction

2.1 Safety
The following types of safety instructions and general information appear in this document
as described below:
CAUTION
“Caution” indicates a hazardous situation which if not avoided, could result
in minor or moderate injury.
WARNING
“Warning” indicates a hazardous situation which if not avoided, could result
in death or serious injury.
DANGER
“Danger” indicates a hazardous situation which if not avoided, will result in
death or serious injury.
NOTE
“Note” provides tips that are valuable for the optimal operation of your
product.
2.2 General Safety Instructions
WARNING
Electrical installations must be done in accordance with local and national
electrical safety standards.
WARNING
Do not connect PV array positive (+) or negative (-) to ground, doing so could
cause serious damage to the inverter.
WARNING
Only devices in compliance with SELV (EN 69050) may be connected to the
RS485 and USB interfaces.
WARNING
Do not touch any internal parts until 5 minutes after disconnection
from the utility grid, PV array, and battery.
WARNING: Risk of fire
Despite careful construction, electrical devices can cause fires.
Do not install the inverter in an area containing flammable materials
or gases.
Do not install the inverter in a potentially explosive atmosphere.
2. Safety & Warning User Manual
6

CAUTION
The PV conductors are energized with high voltage DC when the PV
modules are exposed to sunlight.
CAUTION
The surface temperature of the inverter can reach up to 75 (167°F).
To avoid risk of burns, do not touch the surface of the inverter while it is
operating. The inverter must be installed out of direct sunlight exposure.
WARNING
To reduce the risk of fire, over-current protective devices (OCPD) are
required for all circuits connected to the inverter.
The DC OCPD shall be installed per local requirements. All photovoltaic
source and output circuit conductors shall have isolators that comply with
the NEC Article 690, Part II.
All Solis single phase inverters feature an integrated DC disconnect switch.
CAUTION
Risk of electric shock, do not remove the cover. There are no serviceable
parts inside, refer servicing to qualified and accredited service technicians.
NOTE
PV modules used with inverter must have an IE C 61730 Class A rating.
WARNING
Operations must be accomplished by a licensed electrician or a
person authorized by Solis.
WARNING
Installer must wear personal protective equipment during the
entire installation process in case of electrical hazards.
WARNING
The AC Backup Port of the inverter cannot be connected to the grid.
WARNING
Please refer to the product manual of the battery before installation
and configuration to the inverter.
Systems using this product shall be designed and built in accordance
with the NEC & local electrical codes & standards.
2. Safety & Warning User Manual
7

2.3 Notice for Use
The inverter has been constructed according to the applicable safety and technical
guidelines. Use the inverter in installations that meet the following specifications only:
1. Permanent installation is required.
2. The electrical installation must be compliant with all local and national regulations &
standards.
3. The inverter must be installed according to the instructions stated in this manual.
4. The inverter must be installed according to the inverter technical specifications.
2.4 Notice for Disposal
This product shall not be disposed of with household waste.
It must be segregated and brought to an appropriate disposal facility
to ensure proper recycling.
This it to be done in order to avoid negative impacts on the environment
and human health.
Local waste management rules shall be observed and respected.
2.5 Protection Circuitry and Controls
To meet relevant codes and standards, the Solis U.S. single phase inverter line is
equipped with protective circuitry and controls. These include Arc Fault Circuit Interrupter
(AFCI) and Anti-Islanding Protection.
Arc Fault Circuit Interrupter AFCI:
Edition 2011 of the National Electrical Code®, Section 690.11, requires that all PV plants
attached to a building are fitted with a means of detecting and interrupting serial electric
arcs in the PV wiring and array. An electric arc with a power of 300W or greater must be
interrupted by the AFCI in the time specified by UL 1699B. After five arc fault detections
in 24 hours, an AFCI-induced shutdown will be triggered. If this event occurs, the inverter
must be manually reset. After clearing the source of the fault, the inverter can be powered
back on and allowed to resume normal operation.
Anti-Islanding Protection:
Anti-Islanding is a condition where the inverter cease to produce power when the grid
is not present. Circuitry, along with firmware, has been designed to determine if the grid is
present by adjusting the output frequency of the inverter. In the case of a 60Hz resonant
system where the inverter is partially isolated from the grid, the inverter programming can
detect if there is a resonant condition or if the grid is actually present. It can also
differentiate between inverters operating in parallel and the grid.
2. Safety & Warning User Manual
8

3.1 LED Indicator Lights
There are five indicator lights on the the Solis S6-EH1P(3.8-11.4)K-H-US Series Inverter: Battery,
Inverter, Wi-Fi, RS485 and Bluetooth. These lights indicate the working status of the inverter.
The inverter creates a Bluetooth signal which is what the smart phone connects to so that the inverter
interface page can be accessed. This is how commissioning and settings changes are performed.
Battery
Inverter
Wi-Fi
Bluetooth
RS485
NOTE:
Battery/Wi-Fi/RS485/Bluetooth indicators will automatically turn off after
1 minute. The Inverter indicator will remain on with lower brightness. Short
press the Inverter indicator to wake up the other indicators.
Light Status Description
Blue
Flashing every 3s
Blue
Flashing every 1.5s
Blue
Solid ON
Yellow
Solid ON
Blue
Solid ON
Yellow
Solid ON
Red
Solid ON
OFF
OFF
OFF
Battery is discharging
Battery is charging
Battery is idle
Battery has an alarm
Inverter is operating normally
Inverter has an warning alarm
Inverter has a critical alarm
The data logger port is being used
The RS485 port is being used
The Bluetooth network is enabled
The data logger port is not being used
The Rs485 port is not being used
The Bluetooth network is disabled
Blue
Solid ON
Blue
Solid ON
Blue
Solid ON
Inverter
Wi-Fi
RS485
Bluetooth
Battery
Turning On the LED Indicator Lights
After a few minutes, the LED indicator lights will turn off to conserve
power. To turn the lights back on, short-press the Inverter LED light.
Alarm State
When the inverter has an alarm, the Inverter LED light turns red and
starts flashing. It is recommended to connect to the inverter with the
Bluetooth tool. Then you can determine what the alarm code is.
User Manual
3. Overview
9

3.2 Inverter Wire Box and Connection Points
Name Description
2. PV
3. Battery
1. DC Switch
7. Bluetooth Antenna
4. Solis Logger
5. AC-Backup
6. AC-Grid
8. COM1/COM2
10. Rapid Shutdown Switch
11. AC Bypass Switch
Conduit for PV conductors should be connected here
Conduit for battery conductors should be connected here
This is the DC disconnect switch for the PV
Turns off the internal transmitter which initiates module level rapid shutdown
Solis data logger gets connected here - only USB versions of the loggers will work
Conduit for AC conductors to backup loads panel should be connected here
Conduit for AC conductors to the main service panel should be connected here
Extends the range of the inverter Bluetooth signal (for system commissioning)
RS 485 and CAN communication cables should go through these - use cable glands
Allows the inverter to pass power through from the grid (main service panel) to the
backup loads directly in the event of an inverter failure.
6. AC Grid
5. AC-Backup
4.Logger
3. Battery
1.DC Switch
7.Bluetooth Antenna
2. PV
8. COM
11. AC Bypass
Switch
10.Rapid
Shutdown
Switch
1.DC Switch
10.Rapid
Shutdown
Switch
11. AC
Bypass
Switch
4. Solis Logger
6. AC Grid
5. AC-Backup
3. Battery
2. PV
8. COM
7.Bluetooth
Antenna
9.External RSD
9. External RSD An external RSD switch can be added and connected to the inverter through here
9. External RSD
User Manual
3. Overview
10

4.1 Select a Location to Install the Inverter
When selecting a location for the inverter, the following criteria should be considered:
Exposure to direct sunlight may cause output power derating due to overheating
It is recommended to avoid installing the inverter in direct sunlight. The ideal location is
one where the ambient temperature does not exceed 40°C (140°F)
It is also recommended to install the inverter somewhere the rain and snow will not land
directly on it. The ideal installation location is on a north-facing wall under an eave.
WARNING: Risk of fire
Despite careful installation, electrical equipment can cause fires.
Do not install the inverter in an area containing flammable materials or
gases.
Do not install the inverter in a potentially explosive environment.
The structure where the inverter is being mounted must be fireproof.
Figure 4.1 Recommended Installation locations
Indoor Rated
Direct Sun
Shade Cover
Rain Cover Direct Rain
Outdoor Rated
NEMA 4X
90° Tilt <90° Tilt >90° Tilt
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4. Installation
11

When selecting a location for the inverter, consider the following:
The temperature of the inverter heat sink can reach 167°F. Do not touch the
heat sink while the inverter is operating.
The ambient temperature and relative humidity of the installation environment should
meet the following requirements:
● If multiple inverters are installed on site, a minimum clearance of 12 inches should be kept
between each inverter and all other mounted equipment. The bottom of the inverter should be
at least 20 inches above of the ground or floor (see Figure 4.5 on page 12).
● The LED status indicator lights located on the inverter's front panel should not be blocked
● Adequate ventilation must be present if the inverter is to be installed in a confined space.
WARNING: Risk of fire
Despite careful construction, electrical devices can cause fires.
Do not install the inverter in areas containing highly flammable materials or
gases. Keep the inverter out of reach of children if children may be present.
Do not install the inverter in potentially explosive environments.
CAUTION: Hot Surface
Made of nonflammable materials
Max. load bearing capacity ≥ 4
times of inverter weight
4.1.2 Consult technical data
● Consult the technical specifications sections at the end of this manual for additional environmental
condition requirements (temperature range, altitude, etc.)
● This model of Solis inverter must be mounted vertically (90° degrees not greater or less than 90°
degrees straight up).
4.1.3 Angle of installation
4.1.1 Clearances
Figure 4.3 Load bearing structure
Load bearing structure requirements:
Figure 4.2 Installation environment conditions
Maximum Temperature Minimum Temperature
-24°F
-31°C
140°F
60°C
Max. Relative Humidity
100%
Non-Condensing
Maximum Altitude
13,123 feet
4,000 meters
User Manual
4. Installation
12

4.1.6 Flammable substances
Do not install near flammable substances. Maintain a minimum distance of ten feet
(three meters) from such substances.
4.1.7 Living area
Do not install in a living area where the prolonged presence of people or animals is expected.
Depending on where the inverter is installed (for example: the type of surface around the
inverter, the general properties of the room, etc.) and the quality of the electricity supply, the
sound level from the inverter can be quite high.
4.2 Product Handling
Figure 4.4 Handles for moving the inverter shown circled in red - one per side
4.1.5 Air circulation
Do not install in small, closed rooms where air cannot freely circulate. To prevent overheating,
always ensure that the air flow around the inverter is not blocked.
Please review the instruction below for handling the inverter:
1. The red circle below denotes the carrying handle cutout on the inverter box. Push in the
cutouts on both ends of the box to form handles for moving the inverter (see Figure 4.4).
2. Two people are required to carry and move the inverter while it is in the box.
3. When removing the inverter from the box, two people must use the handles integrated into
the heat sink. (see Figures 1.3 and 1.4 on page 2)
4. When setting the inverter down, do it slowly and gently. This ensures that the internal
components and the outer chassis do not take any damage.
4.1.4 Avoiding direct sunlight
Installation of the inverter in a location exposed to direct sunlight should to be avoided.
Direct exposure to sunlight could cause:
● Power output limitation (with a resulting decreased energy production by the system).
● Premature wear of the electrical/electromechanical components.
● Premature wear of the mechanical components (gaskets) and user interface.
Top of Box
Box handle
User Manual
4. Installation
13

● To prevent overheating, be sure that the inverter has adequate air flow around it. A minimum
clearance of 12 inches (305mm)should be kept between inverter & other equipment.
20 inches (508mm) of clearance between the bottom of the inverter and the ground.
● Visibility of the LED indicator lights should be considered. Ideally, the indicator light
should be at eye-level.
● Adequate ventilation around the inverter must be provided.
NOTE:
Nothing should be stored directly on top, underneath, or against the inverter.
● The inverter must be mounted upright on a vertical structure with a tilt of 90°. A tilt greater
or less than 90° may cause the inverter output power to derate.
Figure 4.5 Inverter Mounting Clearances
● Mount the inverter on a wall or structure capable of bearing the weight of the machine
(305mm)
12 in.
(305mm)
12 in.
(305mm)
12 in.
(305mm)
12 in.
(305mm)
12 in.
(508mm)
20 in.
(508mm)
20 in.
4.3 Mounting the Inverter
● When the inverter is mounted on the wall, it sticks out approximately 9.5 inches.
Keep this in mind when selecting the installation location for the inverter.
● The exact dimensions of the inverter and the mounting bracket are on the next page.
NOTE:
The inverter does not come with any fasteners. You must provide your own
hardware for securing the mounting bracket to the mounting structure.
User Manual
4. Installation
14

The steps to mount the inverter are listed below:
1. Place the bracket on the wall and use a bubble level to make sure it is level. The arrow in the
middle of the bracket points up. With a pencil or marker, mark the mounting holes. Use a drill
to prepare the holes for fasteners. Fasten the bracket to the wall.
Once a suitable location has been found according to 4.2 and 4.3, use figures 4.6 and 4.7
to mount the bracket to the wall. You may drill additional holes in the bracket if you need to.
Figure 4.7 Inverter Bracket Dimensions
Figure 4.6 Inverter Dimensions
21 ⅞ in.
34 ¹⁄ in.
8 ⅝ in.
Width Length Depth
Total bracket length: 18 ¹¹⁄ in. (476 mm)
Center hole to center hole: 16 in. (406.4 mm)
Hole height:
⁷⁄ in. (11 mm)
Hole width: 1 in. (25 mm)
Center hole to
center hole:
10 ¼ in.
(260 mm)
Total bracket width:
13 ⅛ in. (334 mm)
(555.5mm)
19 ¹⁄ in.
(485 mm)
(866 mm)
(218.5 mm)
(455 mm)
17 ¹⁵⁄in.
(136.5 mm)
5 ⅜ in.
User Manual
4. Installation
15

Figure 4.9 Inverter on mounting bracket and set screws
2. Lift up the inverter and align the back two hooks on the heat sync with the two tabs on
the inverter mounting bracket. Lower the inverter hooks down onto the mounting bracket
tabs and ensure the hooks have a solid bite before releasing the inverter. Then install the
two set screws that are included with the inverter for stabilization. (see Figure 4.9)
16
WARNING:
The inverter is very heavy. Please use proper lifting techniques to
avoid potential injury. It is recommended that two people lift the inverter.
Figure 4.8 Fix the bracket to the wall
Fasteners
Bracket
NOTE:
The inverter must be mounted vertically at a 90° angle.
Four fasteners must be used to ensure the bracket does not come off the
wall. At least two must embed in a wall stud to bear the inverter weight.
Wall
Wall
User Manual
4. Installation