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IQ System Controller 2 Quick Install Guide
Close and energize
IQ System Controller 2
CLOSE breakers in the following order:
1. Main breaker
2. Load breaker
WARNING! At commissioning, you must reconnect the
IQ Combiner L1 and L2 circuit back to the terminal lugs in
IQ System Controller 2.
If you plan to commission the system, follow the instructions
in the Enphase Installer App to provision and energize
Enphase Energy System.
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 if the IQ Gateway is connected
to the internet.
Remember to close and secure the door of the IQ System
Controller 2 before leaving the site.
WARNING! Connect the AC wires of the IQ Combiner,
IQ Batteries, and generator into the terminal lugs at the
bottom of the IQ System Controller 2 load center on the left.
Do not connect the AC wires directly to the breakers.
The AC wires go into the terminal lugs as shown on the label.
Before energizing, make sure that all IQ System Controller 2
wiring is complete.
WARNING! If not commissioning the system, you must
ensure that the DC switches on all IQ Batteries are turned
o to avoid the depletion of charge on the IQ Batteries.
Reconnect the dead front ground cable to the grounding
bar. Place the dead front using the 5 reserved screws.
Tighten the cover screws using a Phillips screwdriver.
WARNING! Risk of equipment damage. Ensure that no
conductors are pinched before placing the dead front.
WARNING! If either solar, storage, or generator circuits are
not used in an installation, their respective red and black
colored conductors 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 IQ Battery, PV, or other
generation sources for voltage.
WARNING! Risk of equipment damage. Do not wire the
IQ System Controller 2 when it is energized.
If you work on an IQ6, IQ7, or M Series retrot 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 IQ Combiner breaker in the load panel
where it was originally placed, instead of connecting
the IQ 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.
TURN OFF DC switches on all batteries.
OPEN the IQ Battery breaker in IQ System Controller 2.
A.
B.
D.
E.
F.
G.
C.
a.
b.
c.
d.