enphase AC Combiner Box User manual

INSTALLATION MANUAL
Enphase AC Combiner Box
with Enphase Envoy-S
Contact Information
141-00030, Rev 02

AC Combiner Box Installation
Enphase Energy Inc.
1420 N. McDowell Blvd.
Petaluma, CA 94954
enphase.com
[email protected]
enphase.com/en-us/support/contact
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, you are encouraged to try to correct the interference by one
or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
•Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance may void the
user’s authority to operate the equipment.
Other Information
This Class B digital apparatus complies with Industry Canada ICES-003.
For third-party license information, refer to enphase.com/licenses.
For Enphase patent information, refer to enphase.com/company/patents/.
Product information is subject to change without notice. All trademarks are recognized as the property of
their respective owners.
For warranty text, refer to enphase.com/warranty.
User documentation is updated frequently; Check the Enphase website (enphase.com/support) for the latest
information.
Copyright © 2016 Enphase Energy Inc. All rights reserved.
Audience
This manual is intended for use by professional installation and maintenance personnel.
© 2016 Enphase Energy Inc. 141-00030 Rev 022

AC Combiner Box Installation
Table of Contents
SAFETY ................................................................................................................................................. 5
Read this First ........................................................................................................................................ 5
Safety Instructions................................................................................................................................. 5
The Enphase AC Combiner Box with Enphase Envoy-S .................................................................... 7
How the Enphase Microinverter System Works................................................................................... 7
Pre-installation Checks.......................................................................................................................... 8
Plan the Internet Connection.......................................................................................................... 8
Download the Installer Toolkit ....................................................................................................... 8
Box Contents................................................................................................................................... 8
Required Items ................................................................................................................................ 8
Optional Items................................................................................................................................. 8
System Metering ............................................................................................................................. 9
Wiring Reference............................................................................................................................. 9
Create the Map and Install the PV Modules and Microinverters ................................................. 9
Installation Sequence .......................................................................................................................... 10
Installing the AC Combiner Box ........................................................................................................ 11
1. Choose a Location for the AC Combiner Box ................................................................................ 11
2. Prepare the AC Combiner Box ........................................................................................................ 11
3. Remove an Unused Circuit Breaker (optional)............................................................................... 12
4. Drill Hole(s) to Accept Conduit ....................................................................................................... 13
5. Wire the Output Connections .......................................................................................................... 14
6. Wire Inputs from the AC Branch Circuits........................................................................................ 15
7. Install CTs for Consumption Metering (optional) .......................................................................... 15
8. Energize the Envoy-S ....................................................................................................................... 16
9. Detect the Microinverters................................................................................................................ 17
Method A: Provision Microinverters with Installer Toolkit ......................................................... 17
Method B: Discover Microinverters with Installer Toolkit........................................................... 17
Method C: Discover Microinverters with the Envoy-S ................................................................. 17
With All Methods........................................................................................................................... 18
10. Verify System Configuration......................................................................................................... 18
11. Connect to Enlighten ..................................................................................................................... 19
Method A: Integrated Wi-Fi........................................................................................................... 19
Method B: Enphase Mobile Connect............................................................................................ 19
Method C: Ethernet Cable............................................................................................................. 20
Method D: Power Line Communication Bridges ......................................................................... 20
If the Internet Connection Fails .................................................................................................... 21
12. Send System Summary Report ..................................................................................................... 21
13. Re-Torque Connections and Secure the Door.............................................................................. 21
Activate Monitoring............................................................................................................................ 22
Method A: If the Envoy-S is Associated with a System in Installer Toolkit ......................................22
Method B: If the Envoy-S is NOT associated with a System in Installer Toolkit ..............................22
View System Performance in Enlighten ............................................................................................. 23
Troubleshooting ................................................................................................................................. 24
Loss of AC to a Single Branch of Microinverters............................................................................... 24
Inoperable Envoy-S (All LEDs Off)....................................................................................................... 24
Inoperable Envoy-S and No AC to Branch .......................................................................................... 24
Envoy-S LED States.............................................................................................................................. 25
Microinverter Detection Issues ........................................................................................................... 25
Issue: Device Communications LED is Solid Amber................................................................... 25
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AC Combiner Box Installation
Issue: Installer Toolkit Detects Fewer Microinverters than Expected........................................25
Issue: No Microinverters are Reporting ....................................................................................... 26
Power Production Issues .................................................................................................................... 26
Issue: Power Production LED is solid amber .............................................................................. 26
Internet Connection Issues ................................................................................................................. 27
Issue: Network Communications LED is Amber or Off............................................................... 27
Issue: Wi-Fi Problems ................................................................................................................... 28
Replacing an AC Combiner Box ........................................................................................................ 29
Remove the AC Combiner Box............................................................................................................ 29
Replace the AC Combiner Box ............................................................................................................ 31
Technical Data.................................................................................................................................... 32
© 2016 Enphase Energy Inc. 141-00030 Rev 024

AC Combiner Box Installation
SAFETY
Read this First
Follow the instructions in this manual. These instructions are key to the installation and maintenance of the Enphase AC
Combiner Box™.
To ensure the safe installation and operation of the AC Combiner Box, note the following safety symbols that appear
throughout this document to indicate dangerous conditions and important safety instructions.
DANGER: This indicates a hazardous situation, which if not avoided, will result in death or serious
injury.
WARNING: This indicates a situation where failure to follow instructions may be a safety hazard or
cause equipment malfunction. Use extreme caution and follow instructions carefully.
NOTE: This indicates information that is very important for optimal system operation. Follow
instructions closely.
Safety Instructions
DANGER: Risk
of
electrocution!
Do not install current transformers (CTs) when current is flowing in the sensed circuit.
Always install CT wires in the terminal blocks before energizing the sensed circuit.
DANGER: Risk
of electric
shock. Risk of
fire.
Do not attempt to repair the Envoy-S; it contains no user-serviceable parts. Tampering with
or opening the Envoy-S will void the warranty. If the Envoy-S fails, contact Enphase
Customer Support for assistance (enphase.com/en-us/support/contact). Refer servicing to
qualified personnel.
Only use electrical system components approved for wet locations.
Ensure that all wiring is correct and that none of the wires are pinched or damaged.
Do not wire unused terminals or terminal blocks on the Envoy-S.
Before making any connections verify that the circuit breakers are in the off position. Check
all wiring before applying power.
DANGER: Risk
of electric
shock.
Do not use Enphase equipment in a manner not specified by the manufacturer. Doing so
may cause death or injury to persons, or damage to equipment.
Be aware that installation of this equipment includes risk of electric shock. Do not install
the AC Combiner Box without first removing AC power from the Enphase System.
Disconnect the power coming from the photovoltaics before servicing or installing.
Only qualified personnel should troubleshoot, install, or replace the AC Combiner Box or the
Envoy-S.
Improper servicing of the combiner box or its components may result in a risk of shock, fire
or explosion. To reduce these risks, disconnect all wiring before attempting any
maintenance or cleaning.
Always de-energize the AC branch circuit before servicing. Never disconnect the DC
connectors under load.
Do not work alone. Someone should be in the range of your voice or close enough to come
to your aid when you work with or near electrical equipment. Remove rings, bracelets,
necklaces, watches etc. when working with this equipment.
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AC Combiner Box Installation
WARNINGS: Before installing or using the Enphase AC Combiner Box, read all instructions and
cautionary markings in the technical description and on the AC Combiner Box.
Use the circuit breakers in the Enphase AC Combiner Box only for serving Enphase
equipment. No other loads are allowed.
This unit is not provided with a GFDI device. This inverter or charge controller must be used
with an external GFDI device as required by the Article 690 of the National Electrical Code
for the installation location.
This product is intended for operation in an environment having a maximum temperature
of 46°C.
NOTES: Perform all wiring in accordance with all applicable local electrical codes, with the
Canadian Electrical Code, Part I, and with the National Electrical Code (NEC), ANSI, and
NFPA 70.
Protection against lightning and resulting voltage surge must be in accordance with local
standards.
Using unapproved attachments or accessories could result in damage or injury.
Install the AC Combiner Box in the field with 75°C or 90°C copper conductors sized per
local code requirements and voltage drop/rise considerations.
Use Class 1 wiring methods for field wiring connections to terminals of a Class 2 circuit.
Use only 12 to 6 gauge wire. Select the wire gauge used based on the protection provided
by the circuit breakers/fuses. Overcurrent protection must be installed as part of the
system installation.
To ensure optimal reliability and to meet warranty requirements, the Enphase AC Combiner
Box must be installed according to the instructions in this manual.
© 2016 Enphase Energy Inc. 141-00030 Rev 026

AC Combiner Box Installation
The Enphase AC Combiner Box with Enphase Envoy-S
The Enphase AC Combiner Box™ with Enphase Envoy-S Metered™ consolidates interconnection equipment
into a single enclosure and streamlines PV installations by providing a consistent, pre-wired solution for
residential applications. The included Envoy-S provides integrated revenue-grade PV production metering
(ANSI C12.20 +/- 0.5%) and optional consumption monitoring (+/- 2.5%).
The AC Combiner Box is an outdoor-rated, NRTL-certified NEMA type 3R, polycarbonate enclosure
containing an Enphase Envoy-S, circuit breakers, and wiring for Envoy-S connections. The AC Combiner Box
combines up to three AC branch circuits of Enphase Microinverters.
The Envoy-S Metered operates as a gateway between the Enphase Microinverters and the Enphase
Enlighten™ web-based monitoring and analysis software. The Envoy-S monitors the microinverters that are
connected to the PV modules. It collects energy and performance data from the microinverters over on-site
AC power lines, and it forwards that data to Enlighten, via the Internet, for statistical reporting.
How the Enphase Microinverter System Works
The Enphase Microinverter converts the DC output of the PV module into grid-compliant AC power. In
addition to performing the DC to AC conversion, it maximizes energy production by using a sophisticated
Maximum Power Point Tracking (MPPT) algorithm. This integrated system maximizes energy harvest,
increases system reliability, and simplifies design, installation and management.
The Enphase Enlighten web-based monitoring and analysis software analyzes the data collected by each
communicating microinverter and automatically detects any shortfall in energy production, identifies
possible causes, and suggests solutions. Enlighten constantly monitors every Enphase Microinverter
connected to the Envoy-S and is essential for system monitoring and troubleshooting.
Enlighten provides a wide
range of information on
system performance. You
can even access Enlighten on
your mobile device and view
current performance
information wherever you are.
Enlighten
Microinverter
Router
AC Combiner Box
with Envoy-S
Load Center
POWER LINE
COMMUNICATIONS
NETWORK
COMMUNICATIONS
To Internet
© 2016 Enphase Energy Inc. 141-00030 Rev 027

AC Combiner Box Installation
Enphase Installer
Toolkit mobile app
Pre-installation Checks
Review the following pre-installation checks before you install the AC Combiner Box.
Plan the Internet Connection
To use the Enlighten web-based monitoring and analysis software, additional requirements are:
•Internet connection for the Envoy-S through a traditional router or modem or Enphase Mobile
Connect (Enphase model CELLMODEM-01). Decide whether to connect the Envoy-S to the
Internet using integrated Wi-Fi, an Enphase Mobile Connect modem, or using Ethernet cable with
or without a power line communication (PLC) bridge.
•One of the following Web browsers with cookies enabled: Chrome 5 or higher, Firefox 11 or
higher, Internet Explorer (IE) 9 or higher, or Safari 5 or higher
Download the Installer Toolkit
The Enphase Installer Toolkit is a mobile app for iOS and Android devices that allows
installers to configure the system while onsite, eliminating the need for a laptop and
improving installation efficiency.
•Download the Enphase Installer Toolkit mobile app and open it to log in to
your Enlighten account. With this app, you can connect to the Envoy to
track system installation progress. To download, go to
enphase.com/installer-toolkit or scan the QR code:
•To run the Installer Toolkit app, you need either of the
following mobile devices:
−An Android mobile device running Android version
4.2 or later, or
−An iOS device running iOS 7.0 or later, specifically an iPhone 4 or later
or an iPod Touch 5th generation
Box Contents
Check the shipping box for the following items:
•Enphase AC Combiner Box with Envoy-S
•Ferrite bead to attach to your Ethernet Cable, if used
•The Enphase AC Combiner Box Quick Install Guide
Required Items
•Tools, including screw driver, pliers, torque wrench, etc.
•Overcurrent protection in accordance with NFPA 70-2014, §705.12(D)
•Suitable mounting hardware: use screws that are long enough to secure the unit to the vertical
mounting surface
•75°C or 90°C copper conductors, rated for wet locations
•UL listed rain-tight or wet location hubs for wire entry into the enclosure
Optional Items
Make sure you have the following optional items, if needed:
•Two consumption metering split-core CTs (order two CTs: Enphase CT-200-SPLIT)
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AC Combiner Box Installation
•Enphase Mobile Connect modem (order Enphase CELLMODEM-01)
•Ethernet over power line communication (PLC) bridge with Ethernet cables (order Enphase
EPLC-01)
•Ethernet cable: 802.3, Cat5E or Cat6, unshielded twisted pair (UTP). Do not use shielded twisted
pair (STP) cable.
System Metering
The Enphase AC Combiner Box is an AC Solar combiner with Envoy-S Metered for integrated revenue grade
PV production metering (ANSI C12.20 +/- 0.5%) and optional consumption monitoring (+/- 2.5%), which
requires additional CTs.
Wiring Reference
The following lists tightening torque, allowable wire size, and type for field-wiring terminals:
•20 in-lbs tightening torque for circuit breaker connections
•14 in-lbs tightening torque for combined output connections
•45 in-lbs tightening torque for large neutral and ground busbar screws (6-4 AWG)
•20 in-lbs tightening torque for small neutral and ground busbar screws (12-10 AWG)
•12 to 6 AWG for branch inputs
•12 to 4 AWG for combined output
•Wire type: 75°C or 90°C copper conductors, rated for wet locations
•Copper conductors only
Create the Map and Install the PV Modules and Microinverters
•Create the map and install the PV modules and microinverters as directed by the installation
manuals. You can scan this map later using Installer Toolkit and your mobile device.
NOTE: If needed, you can find an installation map at the back of any Enphase Microinverter
manual.
•Create a paper installation map to record microinverter serial numbers and positions in the array.
Peel the removable serial number label from each microinverter and affix it to the respective
location on the installation map. You can scan this map later using the Enphase Installer Toolkit
and your mobile device.
•Peel the removable label from the bottom of the Envoy-S and affix it to the installation map.
•Always keep a copy of the installation map for your records.
© 2016 Enphase Energy Inc. 141-00030 Rev 029

AC Combiner Box Installation
Installation Sequence
1. Choose a location for the AC
Combiner Box
2. Prepare the AC Combiner Box
3. Remove an Unused Circuit
Breaker (optional)
6. Wire Inputs from the AC Branch
Circuits
7. Install CTs for Consumption
Metering (optional)
5. Wire the Output Connections
4. Make Hole(s) to Accept Conduit
8. Energize the Envoy-S
9. Detect Microinverters
10. Verify System Configuration
11. Connect to Enlighten
12. Send System Summary Report
13. Re-Torque Connections and
Secure the Door
© 2016 Enphase Energy Inc. 141-00030 Rev 0210

AC Combiner Box Installation
Installing the AC Combiner Box
1. Choose a Location for the AC Combiner Box
a. Install the AC Combiner Box in a readily accessible location, at least four feet (1.2 meters) off the
ground. Do not block the vent on the side of the AC Combiner Box.
b. Consider the dimensions of the combiner box, easy access, box height, and length of cable when
selecting the location. The box is rainproof but not watertight.
2. Prepare the AC Combiner Box
a. If needed, reposition the mounting feet. You can adjust each of the four mounting feet to several
different positions. Adjust as desired for the mounting location.
b. Open the enclosure door. Pinch the top of the hinge rod using needle-nosed pliers. Slide the door up
and away to remove it. Set the door aside for later reattachment.
c. Mount the box on a vertical surface, using supplied washers to protect the feet.
d. Remove the clear plastic deadfront and keep the screws and washers in a safe place (for example,
inside the removed enclosure door).
e. Locate and remove the Spare Parts and XA-SLOT bags.
Foot mounting on
back of unit
Foot mounted horizontally
Mounting foot
Foot mounting
screw
Foot mounted at an angle
Foot mounted vertically
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AC Combiner Box Installation
3. Remove an Unused Circuit Breaker (optional)
The combiner includes three 20 A, 2-pole circuit breakers for combining inputs. If required by local
jurisdiction, you can remove one 2-pole breaker if there are only two branch circuits. If you do not need to
remove a circuit breaker, skip this step.
a. Use a straight blade screwdriver to completely loosen the busbar side of the Line 1 and Line 2
terminal blocks (gray).
b. Remove any load wire(s) on the breaker you want to remove.
c. Loosen the busbar lug(s) of only the breaker you want to remove.
d. Release the DIN rail locking tabs of all breakers.
e. Rock the breaker/busbar assembly to the left to release it from the DIN rail, and remove the breaker.
f. Rock the breakers back to the right so they are seated back on the DIN Rail.
g. Lock all of the breaker locking tabs.
h. Tighten the busbar side of the Line 1 and Line 2 terminal blocks (gray) to 14 in-lbs (1.6 Nm).
i. Verify that all busbar connections are tight.
j. Install the blanking plate onto the dead front over the location of the removed breaker using the
screws provided. Every AC Combiner Box comes with an XA-SLOT spares kit with two screws and a
blanking plate.
Loosen these
screws
Blanking
plate
Locking tabs
© 2016 Enphase Energy Inc. 141-00030 Rev 0212

AC Combiner Box Installation
4. Drill Hole(s) to Accept Conduit
WARNING: Do not drill conduit holes on the top of the box or at any location that allows moisture
ingress. This voids the warranty for the combiner box and the Envoy-S.
WARNING: Observe bend radius requirements when routing wires.
NOTE: The label template has three holes, but most applications require only two.
a. A label on the outside of the combiner box indicates the best location to make a hole or holes to
accept conduit fittings. Locate this label.
BEST PRACTICES: Use a stepped drill bit for making the conduit holes. Using a hole saw may
crack the plastic housing. As an alternative, use a sharp chassis punch with caution. Drill only at
the label location. Do not drill a hole in any other location on the box.
b. Use the provided label as a template for typical conduit placement. The center of the holes on the
label are marked with a “+”.
c. Use a snap punch or other type of center punch to prevent the drill from wandering. Drill a pilot hole
with a smaller drill before using a step drill bit.
d. Remove the label after drilling.
e. Use only UL listed rain-tight or wet location hubs for wire entry into the enclosure.
© 2016 Enphase Energy Inc. 141-00030 Rev 0213

AC Combiner Box Installation
5. Wire the Output Connections
a. Use conductors sized per local code requirements: 12 to 4 AWG copper conductors for combined
output. Take into consideration the voltage drop/rise and upstream breaker or fuse.
b. The two DIN rail terminal blocks above the circuit breakers are the output connections. Install the
black wire into the lower terminal block and the red into the upper terminal block.
c. Torque to 14 in-lbs (1.6 Nm).
d. Connect the neutral (white) to the neutral busbar.
e. Connect the ground (green or green/yellow) to the “Ground” busbar and torque to 45 in-lbs (5 Nm).
© 2016 Enphase Energy Inc. 141-00030 Rev 0214

AC Combiner Box Installation
6. Wire Inputs from the AC Branch Circuits
The combiner comes with three 20A circuit breakers (16A continuous) to which you wire the microinverter
AC branch circuits.
a. Use copper conductors sized per local code requirements and voltage drop/rise considerations: 12
to 6 AWG copper conductors for branch inputs.
b. Bring in the wires from each AC branch circuit.
c. Connect the neutral wires (white) to the neutral bus and the ground wires (green or green/yellow) to
the ground bus. Torque to 45 in-lbs (5 Nm).
d. Connect L1 and L2 (usually one black and one red) from each AC branch circuit to the circuit
breakers.
e. Torque to 20 in-lbs (2.4 Nm).
NOTE: L1 and L2 should be wired as shown, with L1 and L2 alternating.
7. Install CTs for Consumption Metering (optional)
The Envoy-S inside the AC Combiner Box is pre-wired at the terminal blocks for power and production
metering connections. One solid-core current transformer (CT) is provided for revenue grade production
metering. You can install two optional split-core CTs to provide consumption metering. To do this, you must
use a protected route in conduit for the CT wires from the main load center to the Envoy-S. If you need to
extend the wires, refer to the Enphase Envoy-S Installation and Operation Manual at: enphase.com/support.
DANGER! Risk of electrocution! Do not install CTs when current is flowing in the sensed circuit.
Always install CT wires in the terminal blocks before energizing the sensed circuit.
DANGER! Risk of electric shock. Always de-energize the load center before beginning wiring.
DANGER: Risk of electric shock. Risk of fire. Do not wire unused terminals or terminal blocks on
the Envoy-S.
NOTE:Because of variance in load center design and main power feed, there may not always be
enough space to install consumption metering CTs.
NOTE: To properly measure power and energy, CT inputs A and B must align with the respective
voltage inputs A and B. For example, make sure both CT input A and voltage input A are the
same line phases.
When installing CTs, it is important to match CT and sense voltage phases. Be sure to
consistently identify and match the two AC lines at three points: the main load center feed, the
Envoy, and the solar production circuit breaker. Wire colors (typically black and red) may not
always consistently identify Lines 1 and 2. If in doubt, use a multimeter to check.
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AC Combiner Box Installation
a. Make sure that the main load center wires are de-energized until you have secured the CT wires in
the terminal blocks.
b. Locate the screw on the left side of the terminal block door, loosen it with a screwdriver to unlock,
and flip open the terminal block door.
c. Before running the CT wires through the conduit, use colored tape to mark one of the CTs and the
free end of its wires.
d. For the marked CT wires,
connect the white wire to
“IA•” and the blue wire to
“IA”.
e. For the unmarked CT
wires, connect the white
wire to “IB•” and the blue
wire to “IB”.
f. Tighten the terminal
block screws to 5 in-lbs.
g. Install the marked CT on
the load center feed wire
Line 1 (matching the
Combiner output
terminal Line 1, bottom
terminal) with the CT
arrow pointing toward
the load. Latch the CT
and listen for the click as
it closes.
h. Install the unmarked CT
on the load center feed wire Line 2 (matching the Combiner output terminal Line 2, upper terminal)
with the CT arrow pointing toward the load. Latch the CT and listen for the click as it closes.
8. Energize the Envoy-S
a. Re-install the clear plastic deadfront. Start all of the screws, but do not completely tighten them.
Once all screws are partially tightened, go back and tighten each one completely.
b. Close the terminal block door, and secure it with the screw.
c. Reinstall the AC Combiner Box door.
d. Turn on the circuit feeding the combiner box.
e. All four LEDs flash amber during boot up. This typically takes 2 to 3 minutes. When boot up is
complete, the Device Communications LED flashes amber indicating that that microinverters are
not yet detected.
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AC Combiner Box Installation
9. Detect the Microinverters
Use one of the following methods to detect microinverters.
Method A: Provision Microinverters with Installer Toolkit
Use the Installer Toolkit mobile app to configure the Envoy-S with the serial numbers of the installed
microinverters.
a. Launch Installer Toolkit and tap View Systems.
b. Select the system you are working with, or tap [+] to add a system.
c. Connect to the Envoy-S with your mobile device as described in the side
note.
d. Return to Installer Toolkit. If the serial number for the Envoy-S you are
installing is not displayed on the System Overview screen, tap the [+] next
to the word “Envoys”. When the app displays the serial number of the
Envoy-S, tap it to add it to the system.
e. Create the arrays and scan the serial numbers from the installation map
as instructed by the Installer Toolkit Operation Manual at
enphase.com/support.
f. Tap the Connect button. This provisions the scanned microinverters on
the Envoy-S.
g. When prompted, confirm the number of microinverters that you installed.
h. If your system is in Hawaii or in another region that does not use the
Factory-Installed Grid Profile, select and apply a grid profile to the
microinverters.
The Device Communications LED lights solid green if all of the provisioned
devices are communicating or solid amber if any devices are not communicating.
Method B: Discover Microinverters with Installer Toolkit
a. Use the Installer Toolkit mobile app to set the number of microinverters the Envoy-S should search
for on the power line.
b. Connect to the Envoy-S with your mobile device as described in the side note.
c. Launch Installer Toolkit and tap Connect to an Envoy.
d. When prompted, enter the number of microinverters that you installed.
e. If your system is in Hawaii or in another region that does not use the Factory-Installed Grid Profile,
select and apply a grid profile to the microinverters.
f. When prompted to start a device scan, tap OK.
The Device Communications LED flashes green while scanning. It lights solid green when all of the
microinverters you installed are communicating or solid amber if any devices are not communicating.
Method C: Discover Microinverters with the Envoy-S
If you are not using the Installer Toolkit app, press the Device Scan button on the Envoy-S. The Envoy
searches the power line for 15 minutes, but does not know how many microinverters it should discover.
The Device Communications LED flashes green for 15 minutes while scanning. At the end of the scan, it
lights solid green if at least one microinverter was discovered or solid amber if no microinverters were
discovered (or if any discovered microinverter stops communicating).
NOTE: Connecting to Envoy-S
with a Mobile Device:
The Envoy’s AP (Access Point)
Wi-Fi network allows you to
connect your mobile device to
the Envoy-S. The AP Mode LED
lights solid green when the
network is available.
•On the Envoy-S, if the AP
Mode LED is not lit, press
the AP Mode button.
•On your mobile device, go
to Settings and join the Wi-
Fi network “Envoy_nnnnnn”
(where “nnnnnn” represents
the final six digits of the
Envoy serial number).
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AC Combiner Box Installation
With All Methods
If the Device Communications LED remains solid, see “Microinverter Detection Issues” on page 25.
10. Verify System Configuration
While still connected to Envoy-S with Installer Toolkit, check the Envoy Overview screen for the following:
a. Confirm that the expected number of devices are discovered and communicating.
b. If you selected a grid profile, check the Envoy Overview screen to make sure the new profile is set on
all the microinverters. This may take up to 5 minutes for a typical system.
c. Set up metering:
If there is a check next to Production Meter, the production meter is enabled. If a gear is
shown, you must enable the meter:
•Tap Production Meter and follow the on-screen instructions to enable the Production Meter.
•If you installed consumption metering CTs, tap the >to the right of Consumption Meter.
•Based on where you installed the consumption CT, indicate whether the circuit that passes
through the consumption CT includes:
- Load with solar production (also known as net) or
- Load only (also known as total or gross), for example, in the case of a line-side tap.
•Tap Enable Consumption Meter.
•Return to the Overview screen and verify the meter reading(s).
WARNING! If using consumption metering, be sure to set the meter type correctly. You cannot
change this setting once the meter is enabled.
If you used Installer Toolkit to detect microinverters, the Power Production LED lights solid green when all
expected microinverters are producing power. If you did not use Installer Toolkit, it lights solid green if all
communicating microinverters are producing power. It flashes green when microinverters are upgrading.
Check Installer Toolkit for production status details. If the Power Production LED remains solid amber, see
“Power Production ” on page 26.
© 2016 Enphase Energy Inc. 141-00030 Rev 0218

AC Combiner Box Installation
11. Connect to Enlighten
The Envoy-S requires a connection to the Internet for reporting to Enlighten. You can provide this connection
through an existing broadband router, other Wi-Fi access point at the installation site, or by using the
Enphase Mobile Connect cellular modem.
WARNING!Risk of Equipment Damage. Do not remove power from the Envoy-S if the LEDs are
flashing green. This indicates that a software upgrade is in progress.
Connect to a broadband router using one of these methods, described in the following sections:
•Method A: Integrated Wi-Fi
•Method B: Enphase Mobile Connect (order CELLMODEM-01 separately)
•Method C: Ethernet cable (not included, installer must provide). This method requires that you use
the ferrite bead included with the AC Combiner Box.
•Method D: Power Line Communication Bridges (order EPLC-01 separately). This method requires
that you use the ferrite bead included with the AC Combiner Box.
Method A: Integrated Wi-Fi
To use the Enphase integrated Wi-Fi, you need a wireless
router. To use Wi-Fi:
a. On the Envoy-S, verify that no Ethernet cable is plugged
into the RJ45 port.
b. If your router supports WPS, press and hold the WPS
button on the wireless router for a few seconds. On most routers, a WPS LED begins flashing.
c. If you are using the Installer Toolkit mobile app, tap the Network button, tap Wi-Fi, and then tap your
network from the list of available networks. If the wireless router does not support WPS, you may be
prompted to enter a password.
If you are not using the Installer Toolkit mobile app, you can only connect using WPS. Initiate a WPS
connection by pressing and holding the AP Modebutton for 5 seconds.
The Network Communications LED begins flashing green. Within three minutes the Network
Communications LED lights solid green, indicating a successful connection to the Internet and to
Enlighten. If the Network Communications LED does not light solid green, see “Internet Connection
Issues” on page 27.
Method B: Enphase Mobile Connect
(Order CELLMODEM-01 separately)
To install Enphase Mobile Connect:
a. Connect the antenna to the connector (marked CELL) on the modem.
b. Mount the modem as described in the Enphase Mobile Connect Installation
Guide.
c. Connect the USB cable:
•First, connect the USB cable to the USB port(s) on the Envoy-S.
•Then, connect the mini-USB connector to the Mobile Connect modem.
If receiving power from the Envoy-S, the modem power LED lights.
Within three minutes the Network Communications LED lights solid green, indicating a
successful connection to the Internet and to Enlighten.
© 2016 Enphase Energy Inc. 141-00030 Rev 0219

AC Combiner Box Installation
NOTE: With Mobile Connect, the Envoy initially reports to Enlighten every five minutes for 12
hours or until the Envoy-S detects the expected number of microinverters, which is based on the
number entered in Total Number of PV Modules in Enlighten. After that, the Envoy uses low
bandwidth reporting mode. Low bandwidth mode reports 15-minute interval readings and event
data to Enlighten four times a day rather than every 15 minutes as with other connection
methods.
Method C: Ethernet Cable
To use this method, you need an Ethernet cable and a broadband router. In the box with the Envoy-S is a
ferrite bead. You must attach this ferrite bead to your Ethernet cable to ensure there is no communication
interference between the Envoy-S and other devices. To install the cable and ferrite bead:
a. Select an Ethernet cable with unshielded twisted pairs (UTP) and suitable ratings for its environment.
Do not use shielded twisted pair (STP) cable.
b. Place the bead on the cable, near one end, and close the latch.
c. Plug the cable end with the ferrite into the Envoy-S Ethernet port.
d. Secure a tie wrap on the cable on each side of the ferrite bead.
e. Tighten an additional tie wrap around the ferrite bead.
f. Trim any tie wrap excess.
g. Plug the other end of the Ethernet cable into a spare port on the broadband router.
Within three minutes the Network Communications LED lights solid green, indicating a
successful connection to the Internet and to Enlighten.
When you use Ethernet cable, two small LEDs on the Ethernet port indicate Ethernet link and activity.
The link LED is solid green when the cable is connected correctly, and the activity LED flashes green
or yellow when data is sent or received.
Method D: Power Line Communication Bridges
(Order EPLC-01 separately)
If you need to locate the Envoy-S away from the router, at a distance where an Ethernet cable is not practical
or the wireless signal does not reach, use power line communication bridges with the Envoy-S. Bridges allow
the Envoy-S to communicate with the broadband router over the site’s power lines. To install power line
communication bridges:
a. Plug one of the bridges into the same AC outlet that the Envoy-S is using.
b. Place the bead on the Ethernet cable, near one end, and close the latch. Do not use shielded twisted
pair (STP) cable.
c. Plug the cable end with the ferrite into the Envoy-S Ethernet port.
d. Secure a tie wrap on the cable on each side of the ferrite bead.
e. Tighten an additional tie wrap around the ferrite bead.
f. Trim any tie wrap excess.
g. Plug the other end of the Ethernet cable into the bridge.
h. Plug the other bridge into an AC outlet near the broadband router.
i. Connect one end of a second Ethernet cable to the second bridge, and connect the other end of the
Ethernet cable into the broadband router.
Within three minutes the Network Communications LED lights solid green, indicating a
successful connection to the Internet and to Enlighten.
© 2016 Enphase Energy Inc. 141-00030 Rev 0220