enphase AC Combiner Box Installation Manual
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enphase AC Combiner Box Installation Manual

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

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Summary of Contents for enphase AC Combiner Box

  • Page 1 INSTALLATION MANUAL Enphase AC Combiner Box with Enphase Envoy-S Contact Information 141-00030, Rev 02...

  • Page 2: Fcc Compliance

    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.

  • Page 3: Table Of Contents

    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.
  • Page 4 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 ............................

  • Page 5: Safety

    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.
  • Page 6 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.

  • Page 7: The Enphase Ac Combiner Box With Enphase Envoy-S

    (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.

  • Page 8: Pre-Installation Checks

    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.

  • Page 9: System Metering

    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.

  • Page 10: Installation Sequence

    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) 4. Make Hole(s) to Accept Conduit 5. Wire the Output Connections 6. Wire Inputs from the AC Branch Circuits 7.

  • Page 11: 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.

  • Page 12: Remove An Unused Circuit Breaker (Optional)

    Verify that all busbar connections are tight. 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.

  • Page 13: Drill Hole(S) To Accept Conduit

    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.

  • Page 14: Wire The Output Connections

    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.

  • Page 15: Wire Inputs From The Ac Branch Circuits

    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.

  • Page 16: Energize The Envoy-S

    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.

  • Page 17: Detect The Microinverters

    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.

  • Page 18: With All Methods

    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.

  • Page 19: Connect To Enlighten

    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.

  • Page 20: Method C: Ethernet Cable

    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.

  • Page 21: If The Internet Connection Fails

    WARNING: Do not skip this step. You must re-torque all field wiring connections after one hour. a. Turn off power to AC combiner box at the main load center. Verify that all power is removed from the system before attempting any wiring.

  • Page 22: Activate Monitoring

    (enlighten.enphaseenergy.com). Once you have registered the system and successfully installed the Envoy-S, Enlighten sets up an account for the site owner. When you complete the registration and installation, Enphase sends account information to the site owner so that they can log in to the Enlighten website and view system performance.

  • Page 23: View System Performance In Enlighten

    AC Combiner Box Installation View System Performance in Enlighten Once the array is built and the system is activated, you can log in to Enlighten to view site data. Enlighten displays a graphic representation of the PV system. It also shows detailed current and historical performance information.

  • Page 24: Troubleshooting

    Test point C to the screws on the load-side breaker screws (D). The result should be around 120 VAC. If not, switch the breaker off and on to reset. If this does not remedy the problem, contact Enphase Customer Support (enphase.com/en-...

  • Page 25: Envoy-S Led States

    AC Combiner Box Installation Envoy-S LED States State Description Flashing amber in unison The Envoy-S is booting up Flashing green sequentially Software upgrade in progress Solid green Communicating with Enlighten Flashing green WPS connection in progress, or Envoy-S is attempting to...

  • Page 26: Issue: No Microinverters Are Reporting

    AC Combiner Box Installation Check Enlighten or use the Installer Toolkit to connect to the Envoy to see if any microinverters • are not reporting in to the Envoy or having any error conditions. If this problem occurs when light levels are low, try again during daylight hours.

  • Page 27: Internet Connection Issues

    Enlighten after its scheduled reporting time (five minutes). When the LED is off, there is no network connection. If you are using the Enphase Mobile Connect modem and the Network Communications LED remains off or lights solid amber, see Troubleshooting in the Enphase Mobile Connect Installation Guide.

  • Page 28: Issue: Wi-Fi Problems

    AC Combiner Box Installation Issue: Wi-Fi Problems If the Network Communications LED remains off: If the Envoy is installed in an enclosure, that enclosure must be non-metallic to allow wireless • communication. Metal enclosures impede wireless communication. Stucco and plaster wall construction may contain metal mesh, which can affect wireless range.

  • Page 29: Replacing An Ac Combiner Box

    If Customer Support authorizes an AC Combiner Box replacement (RMA), perform the following steps. 1. Turn off power to AC combiner box at the main load center. Verify that all power is removed from the system before attempting any wiring.
  • Page 30 9. Unlatch the split-core consumption CTs (if used) and remove them from the sensed wires. 10. Disconnect the consumption CT leads from the Envoy-S terminal blocks. NOTE: Do not remove the production CT from the AC Combiner Box. It is calibrated to work with the installed Envoy-S and cannot be reused.

  • Page 31: Replace The Ac Combiner Box

    AC Combiner Box Installation Replace the AC Combiner Box Follow the steps in “Installing the AC Combiner Box” starting on page 11. After installing the new AC Combiner Box, do the following: 1. Log in to Enlighten and add the Envoy-S to the Activation for this system by clicking “Add Another Envoy”...

  • Page 32: Technical Data

    AC Combiner Box Installation Technical Data Model Number AC Combiner Box, Metered AC combiner with Enphase Envoy-S Metered™ for integrated revenue XAM1-120 grade PV production metering (ANSI C12.20 +/- 0.5%) and optional consumption monitoring (+/- 2.5%). Accessories (Order Separately) Enphase Mobile Connect™...

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