27
IQ System Controller 2 Quick Install Guide
Close and energize IQ System
Controller 2
Configure and activate
Operation
WARNING
: Before energizing, make sure that ALL IQ
System Controller 2 connections are properly installed
and conductors terminated.
Reconnect the deadfront ground cable to the grounding
bar, torque as shown in the start of the guide, and replace
the deadfront using the 5 reserved screws. Tighten the
cover screws using a Phillips screw driver.
WARNING!
Risk of equipment damage. Ensure that no
conductors are pinched before replacing the cover.
WARNING!
Conductors are factory provided for the
generator, AC Combiner and IQ Battery. If no generator
is used with the system, these conductors will not be
terminated. If the Combiner does not connect to the IQ
System Controller 2, these will also not be terminated.
When these wires are not terminated, they should remain
stowed in the clips on the plastic frame supporting the
panel board interior and their end caps should not be
removed.
DANGER
: Risk of electric shock. There are many potential
sources of voltage. Check any Enphase IQ Battery
battery, PV, or other generationsource for voltage.
You must ensure that all electrical circuits external to
IQ System Controller 2 are completed and safe before
energizing IQ System Controller 2.
If you work on an IQ6/7/M-series retrofit system, and you
plan to energize IQ System Controller 2 and connect the
PV without commissioning the system in the same day,
follow the sequence below:
Leave the AC combiner breaker in the load
panel where it was originally placed, instead of
connecting the AC combiner L1 and L2 circuits to
the terminal lugs in IQ System Controller 2. This
way your PV systems can still be functional before
commissioning.
OPEN the NFT and IQ Battery breakers
CLOSE the breakers in the following order:
•
Main breaker
•
Load breaker
A.
D.
E.
F.
1.
2.
B.
C.
a.
b.
c.
WARNING!
At commissioning, you must reconnect the
AC combiner L1 and L2 circuits back to the terminal lugs
in IQ System Controller 2 as shown in step 5(F) in this
document.
NOTE
: If not commissioning the system you must ensure
that the DC switches on all IQ Battery batteries are turned
off to avoid the depletion of charge on the IQ Battery
batteries.
If you plan to commission the system, follow the
instructions in the Enphase Installer Toolkit app for
energizing IQ System Controller 2.
Energize the circuit feeding the IQ System Controller 2.
If installed, turn the breaker feeding the IQ System
Controller 2 to the on position.
Close and secure the door of the IQ System Controller 2.
Use the Enphase Installer App to commission the IQ System
Controller
Once connected to the IQ Gateway, refer to the Enphase
Installer App help topics for more information.
If you do not see the IQ System Controller 2 information in
Enphase Installer App, check that the IQ Gateway and the
Internet connection are working.
