enphase IQ Combiner 3C-ES Quick Install Manual page 3

6
Install CTs for Consumption Metering (optional)
The IQ Envoy printed circuit board inside the IQ Combiner 3C-ES or IQ Combiner 3-ES is pre-wired at the terminal blocks for power and production metering connec-
tions. One solid-core current transformer (CT) is provided for revenue grade production metering. A pair of split-core CTs are provided for consumption metering. To
install them, create a protected route using conduit for the CT wires from the main load center to the IQ Envoy. If you need to extend the wires, refer to the Enphase
IQ Envoy Installation and Operation Manual at:
NOTE: Because of variance in load center design and main power feed, there may not always be enough space to install consumption metering CTs.
A ) Make sure that the main load center wires are de-energized until you
have secured the CT wires in the terminal blocks.
B ) Before running the CT wires through the conduit, use colored tape to
mark one of the CTs and the free end of its wires.
C ) For the marked CT wires, connect the white and blue wires to the white
and blue "C1" terminals.
D ) For the unmarked CT wires, connect the white and blue wires to the
white and blue "C2" terminals.
E ) Tighten all connections to 5 in-lbs.
F ) Clamp the marked CT on the load center feed wire Line 1 (matching the
Envoy's "L1" voltage terminal) with the CT arrow pointing toward the
load (away from the grid).
G ) Clamp the unmarked CT on the load center feed wire Line 2 (matching
the Envoy's "L2" voltage terminal) with the CT arrow pointing toward
the load (away from the grid).
Load Center
From IQ Combiner
Consumption CTs
The arrows must point
toward the load — away
from the grid.
UP TO 250 Vac.
100A 0.5V 45-66Hz
To Grid
Energize and Update the IQ Envoy
7
A ) Re-install the plastic deadfront with the LTE-M1 cell modem in-
stalled on the deadfront. Do not completely tighten all of the screws.
B ) Once all screws are partially tightened, go back and tighten each
one completely.
C) Plug in cell modem USB cable into an Envoy USB port
D ) Turn off the DG breaker(s).
E ) Reinstall the IQ Combiner 3C-ES door.
F ) Turn on the circuit feeding the combiner.
G ) On the IQ Envoy (inside the combiner), if the AP Mode LED is not lit,
press the AP Mode button.
H ) On your mobile device, go to Settings and join the Wi-Fi network
"Envoy_nnnnnn" (where "nnnnnn" equals the final six digits of the Envoy
serial number).
enphase.com/support.
IQ Envoy Terminal Block
CU, 75C, 14AWG MIN
MEAS CAT III
OVC III
L1
N
DANGER! Risk of electric shock. Always de-energize the load
center before beginning wiring.
DANGER! Risk of electrocution! Do not install CTs when cur-
rent is flowing in the sensed circuit. Always install CT wires
in the terminal blocks before energizing the sensed circuit.
NOTES: It is important to match CT and sense voltage phases.
To properly measure power and energy, CT inputs must align with the
respective voltage inputs. Be sure to consistently identify and match
the two AC lines at two points: the main load center feed and the Envoy.
Wire colors (typically black and red) may not always consistently
identify Lines 1 and 2. If in doubt, use a multimeter to check.
Production | Consumption
P1
L2
I ) Log into the Enphase Installer Toolkit on your mobile device and down-
load the latest version of Envoy software. To do so, go to the Settings
tab in the installer toolkit and select Update Now under Envoy Software.
J ) For a short period (5-10 minutes), you must keep your mobile device
near the combiner. Follow the on-screen instructions while the
update takes place.
The Envoy software update process may take up to 25 minutes. During
the software update, the LEDs on the Envoy flash green one at a time
from right to left. During this time, the Envoy will reboot multiple times. All
four LEDs flash red when the Envoy reboots.
Once the update is finished and the PV system is installed, the Envoy is
ready for Installation Part 2.
All four LEDs flash amber during boot up (approximately 3 minutes).
When boot up is complete, the Device Communications LED
solid amber, indicating that devices are not yet detected.
Digital Input
C1 C2
1 2 3 4
Ref Common
Not used
Relay contacts
(if needed)
PD, B300
OVC II
Relay
NO
C
lights