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INSTALLATION AND OPERATION MANUAL

December 2019 1 - -0341 00043

Enphase

IQ 7, IQ 7+, IQ 7X, and IQ 7A Micros

IQ 7 / IQ 7+ / IQ 7X / IQ 7A Micro Installation and Operation

Corporate Headquarters Contact Information

Enphase Energy Inc.

1420 N. McDowell Blvd.

Petaluma, CA 94954

USA

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 o 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 dierent from that to which the receiver is

connected.

• Consult the dealer or an experienced radio/TV technician for help.

Changes or modications not expressly approved by the party responsible for compliance may void the

user’s authority to operate the equipment.

Other Information

Product information is subject to change without notice. All trademarks are recognized as the property of

their respective owners.

User documentation is updated frequently; Check the Enphase website ( ) for the enphase.com/support

latest information.

To ensure optimal reliability and to meet warranty requirements, the Enphase Microinverter must be

installed according to the instructions in this manual. For warranty text refer to . enphase.com/warranty

For Enphase patent information refer to . enphase.com/company/patents/

IQ Envoy, IQ Combiner, IQ Microinverter, Installer Toolkit, Enlighten and other trademarks or service

names are the trademarks of Enphase Energy, Inc. Data subject to change.

Audience

This manual is intended for use by professional installation and maintenance personnel.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A Micro Installation and Operation

Table of Contents

Important Safety Information .......................................................................................................................................... 5

Read this First .................................................................................................................................................. 5

Product Labels ................................................................................................................................................. 5

Safety and Advisory Symbols........................................................................................................................... 5

IQ 7 Microinverter Safety Instructions .............................................................................................................. 5

PV Rapid Shutdown Equipment (PVRSE) ....................................................................................................... 7

The Enphase IQ System................................................................................................................................................. 8

How the Enphase IQ Series Micros Work ........................................................................................................ 9

System Monitoring ....................................................................................................................................... 9

Optimal Reliability ........................................................................................................................................ 9

Ease of Design ............................................................................................................................................. 9

Planning for Microinverter Installation ........................................................................................................................... 10

Compatibility ................................................................................................................................................... 10

Grounding Considerations.............................................................................................................................. 10

Branch Circuit Capacity .................................................................................................................................. 11

Utility Service Requirements .......................................................................................................................... 11

Wire Lengths and Voltage Rise...................................................................................................................... 11

Lightning and Surge Suppression .................................................................................................................. 12

Parts and Tools Required ............................................................................................................................................. 12

Enphase Equipment ....................................................................................................................................... 12

Other Items..................................................................................................................................................... 12

Enphase Microinverter Installation................................................................................................................................ 13

Step 1: Position the Enphase Q Cable ........................................................................................................... 14

Step 2: Position the Enphase Q Aggregator or Junction Box ........................................................................ 14

Step 3: Mount the Microinverters ................................................................................................................... 15

Step 4: Create an Installation Map ................................................................................................................. 16

Step 5: Manage the Cabling ........................................................................................................................... 17

Step 6: Connect the Microinverters ................................................................................................................ 17

Step 7: Terminate the Unused End of the Cable............................................................................................ 18

Step 8: Complete Installation of the Enphase Q Aggregator or Junction Box ................................................ 19

Step 9: Connect the PV Modules ................................................................................................................... 19

Step 10: Energize the System ........................................................................................................................ 20

Set Up and Activate Monitoring ...................................................................................................................... 20

Troubleshooting ............................................................................................................................................................ 21

Status LED Indications and Error Reporting .................................................................................................. 21

LED Operation ........................................................................................................................................... 21

DC Resistance Low – Power Off Condition ............................................................................................... 21

Other Faults ............................................................................................................................................... 22

Troubleshoot an Inoperable Microinverter...................................................................................................... 23

Disconnect a Microinverter ............................................................................................................................. 24

Install a Replacement Microinverter ............................................................................................................... 25

Ordering Replacement Parts .......................................................................................................................... 27