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Chapter 2 SunStar Installation
The installation instructions describe solar battery charging. Specific instructions for the
load control and diversion modes are provided as notes.
2.1 General Information
The mounting location is important to the performance and operating life of the controller.
The environment must be dry and protected as noted below. The controller may be installed
in a ventilated enclosure with sealed batteries, but never in a sealed battery enclosure or
with vented batteries.
If the solar array exceeds the current rating of the controller, multiple SunStars can be
installed in parallel. Additional parallel controllers can also be added in the future. The load
controllers cannot be used in parallel.
If solar charging and load control are both required, two separate controllers must be used.
2.2 Installation Overview
The installation is straightforward, but it is important that each step is done correctly and
safely. A mistake can lead to dangerous voltage and current levels. Be sure to carefully
follow each instruction in Section 2.3 and observe all cautions and warnings.
The following diagrams provide an overview of the connections and the proper order:
Battery
PV+ /
Positive +
Load +
Dip Switches
PV—/
Battery
Load—
Negative—
2-1
VR2
Earth
BCD
Switch
BTS+
BTS—
Communication Port
VR1
IN
OUT
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