2-13
CAUTION: The solar PV array can produce open-circuit voltages over 100 Vdc
when in sunlight. Verify that the solar input breaker has been opened
(disconnected) before installing the system wires (if the controller is in
the solar charging mode).
Using the diagram on the previous pages, connect the four power conductors in the
following steps:
1. Confirm that the input and output disconnect switches are both turned off before
connecting the power wires to the controller. There are no disconnect switches inside the
SunStar.
2. Pull the wires into the wiring compartment. The Battery Temperature Sensor (BTS) wires
can be inside the conduit with the power conductors.
3. Connect the B (positive) wire to the B terminal.
4. Connect the Battery – (negative) wire to the Battery – terminal.
5. Connect the Solar + wire (positive) to the Solar + terminal. (or Load + / Div)
6. Connect the Solar – (negative) wire to the Solar – terminal. (or Load – / Diversion –)
The CE certification requires that the battery conductors, and BTS wires shall not be
accessible without the use of a tool and are protected in the battery compartment.
Do not bend the power wires up toward the access cover. These large wires can damage the
meter assembly when the access cover is attached to the controller.
Torque each of the five power terminals to 5.65 Nm (50 in-lbs).
Power-Up
z
Confirm that the solar (or load) and battery polarities are correct.
z
Turn the battery disconnect on first. Observe the LED’s and LCD meter to confirm a
successful start-up.
z
Note that a battery must be connected to the SunStar to start and operate the controller.
The controller will not operate from a solar input only.
z
Turn the solar (or load) disconnect on.
2.4.7 Finish Installation
Inspect for tools and loose wires that may have been left inside the enclosure.
Check the power conductors to make sure they are located in the lower part of the wiring
compartment and will not interfere with the cover and the LCD meter assembly.
NOTE: If the power conductors are bent upwards and touch the LCD meter assembly,
pressing the cover down on the wires can damage the meter.
z
Carefully place the cover back on the controller and install the one cover screw.
z
Closely observe the system behavior and battery charging for 2 to 4 weeks to
confirm the installation is correct and the system is operating as expected.
