Breaker installation positions are noted in the diagram:
A ) Ensure that the IQ System Controller 2 is completely de-energized.
B ) Open the three latches that lock the enclosure door. To release the
latch, pull the latch handle forward and then to the right. With all the
latches opened, swing open the enclosure door.
*
WARNING
: Risk of equipment damage. Do not remove the
pre-installed solar shield attached to the enclosure door.
C ) Use a Phillips screw driver to loosen the six screws along the
periphery of the deadfront. Support the deadfront to keep it from
falling while performing the next step.
D ) While supporting the deadfront, use a screwdriver to disconnect the
deadfront ground wire from the grounding bar before the deadfront is
removed.
E ) Use the two tabs on the front to assist handling the deadfront during
the removal. Keep the deadfront and screws handy as you will need
them later.
*
WARNING
: Risk of electric shock. To maintain the warranty, do
not modify the deadfront other than to remove or replace filler plates,
as needed.
F ) If you install a main breaker or load breaker, remove the standard lugs
before installing the Eaton CSR breaker. By default, lugs are provided in
the IQ System Controller 2 unit for connection to the mains and to the
load. In case of usage without breakers, the conductors are connected
directly to these lugs. When breakers are used, the lugs are replaced
with breakers during installation.
G ) Remove a filler plate from the deadfront for each breaker position
you will use. Refer to the breaker position diagram to the left. To
remove the filler plate, press the two snaps inward while gently
pushing the filler plate out.
H ) For the IQ Battery, AC Combiner or Generator (optional) connection,
snap the appropriately sized BR series two-pole Eaton breaker onto the
busbar, using only the breaker positions indicated in the diagram on the
door of the unit. The wires to be connected to each breaker are located
beside each breaker position. Remove the heatshrink cap on the wire
ends before inserting into the breaker.
I ) There are three ways of installing the IQ Gateway breaker:
Option 1:
Unwire and remove the IQ Gateway breaker from the IQ Com-
biner, wire L1 and L2 from IQ Gateway terminals through the PV conduit
to IQ System Controller, insert IQ Gateway breaker onto the bottom right
position on IQ System Controller busbar (earlier reserved for generator),
wire IQ Gateway L1 and L2 to IQ Gateway breaker on IQ System Control
-
ler busbar.
Option 2:
Unwire and remove IQ Gateway breaker inside IQ Combiner , wire
L1 and L2 from IQ Gateway terminals through the PV conduit through IQ
System Controller to backup panel ,insert IQ Gateway breaker onto an
available space on backup loads panel,wire IQ Gateway L1 and L2 to IQ
Gateway breaker on backed up loads panel.Generator breaker position is
free to be used with generator.
Option 3:
Unwire and remove IQ Gateway breaker inside IQ Combiner,
unwire and remove NFT breaker inside IQ System Controller and insert
quad breaker (BRK-20A40A-4P-240V) in the NFT position, wire L1 and L2
from IQ Gateway terminals
through the PV conduit to IQ
System Controller, wire IQ
Gateway L1 and L2 and
NFT L1 and L2 to the quad
breaker. Generator breaker
position is free to be used
with generator.
J) The bottom right breaker
position can be used for the
below purposes :
1. Power the IQ Gateway
2. Interconnect with the
Generator (optional)
3. Power the control
transformer to enable the
auxiliary contact load/PV
shedding feature
4. Connect the subpanel
backup load breaker for <100A load subpanel. You can connect the
main breaker of the subpanel to this position, since the load side lugs
in IQ System Controller do not support <100A breaker or <1AWG wires.
Ensure you stick the “GENERATOR” or “BACKUP LOADS” label, on top of
the “IQ Gateway” embossing, on the IQ System Controller deadfront per
the usage.
K ) Install each breaker by rocking it to the left, catching the clips that hold it in
place. Then rock the breaker to the right so it is fully seated and secure.
L ) For the main load breaker, use an appropriately sized CSR Eaton breaker.
Install at the location indicated in the diagram on the door of the unit.
M ) Remove the mains/load lugs by unscrewing the two nuts holding the lugs.
Re-use the same nuts to fix the CSR breakers in the same position. Torque
to 4 N•m (35.4 lb•in).
N ) Use the 8-32 screw (from the lit kit marked 150-00148 that ships with the IQ
System Controller 2) to secure the mains breaker (not the load breaker). Use
a T20 drive to
tighten the 8-32 screw to 1.5 N
•
m (13.3 lb
•
in)
. Do not use any
other screw.
O ) Check that all breakers are properly seated.
P ) Use the included stowed conductors, as labeled, to wire the circuit
breaker(s) for the IQ Batteries, IQ Combiner, and generator (optional), as
needed. The stowed conductors are provided with crimped-on ferrules
with end caps to prevent accidental contact. Remove the conductor end
caps as needed.
Q ) Torque the breaker connections as listed in the following and
in the
conductor table on the unit
.
R ) Purchase and install two circuit breaker hold-down screw kits (SKU:
EP200G-NA-HD-200A) to secure the IQ Battery and generator double-pole
circuit breakers.
Connections
Wire size (AWG)
Torque (N•m / lb•in)
Main lugs
Backup load lugs (use a 1/4” hex drive) Cu/AL: 300 KCMIL - 1
31.1 / 275
CSR breaker bottom wiring lugs
Cu/AL: 300 KCMIL - 2
28.2 / 250
BR breakers (wire provided)
6
3.1 / 27
AC Combiner lugs,
IQ Battery lugs, and
Generator lugs
14 - 10
8
4 - 6
2 - 3
2.8 / 25
3.4 / 30
3.9 / 35
4.5 / 40
Neutral - large lugs (use a 3/8” hex drive)
Cu/AL: 300 KCMIL - 6
31.1 / 275
Neutral and ground bars
Large holes (5/16-24 UNF)
1/0 - 3
4 - 6
8
10 -14
5.6 / 50
5.1 / 45
4.5 / 40
4.0 / 35
Small holes (10-32 UNF)
6 - 8
10 -14
2.8 / 25
1.7 / 15
Required practices when
torquing connections:
•
Always follow NEC
2017 110.4 (D)
dictates.
•
You must use a cali-
brated torque tool to
achieve the indicated
torque values.
•
Use tamper-proof
torque mark/
paint after torquing
connections.
Load breaker
AC Combiner
breaker
IQ Battery
breaker
Generator
breaker
Mains breaker
Ground wire
Install 8-32
screw with 1.5
N•m torque
CSR breaker upper
lugs: 4 N•m torque
CSR breaker bottom
wiring lugs: 28.2 N•m
torque