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1-1 Introduction
The SunWide is an advanced design using a microcontroller for digital accuracy and fully
automatic operation. Each model unit can be used for 12V, 24V and 48V system and can
be operated at three major functions including solar charging, load control and lighting
control. The PWM battery charging has been optimized for longer battery life and the
state-of-the-art auto detector of day and night has been precisely applied to log the
different length of night hours for lighting control no matter where and when (the North
or the South, winter or summer) SunWide is installed. Many specifications of the
SunWide are unique and designed for user-friendly operation. Please take the time to read
this operator’s manual and follow the instruction step by step to help you make full use of
many functions that the SunWide can provide to your solar lighting system.
1-2 Safety Instruction
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This manual contains important instructions that should be followed during
installation and maintenance of the SunWide controller.
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Be very careful when working with batteries. Lead acid batteries can generate
explosive gases, and short circuits can draw thousands of amps from the battery.
Read all instructions provided with the battery.
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Do not exceed the rated current ratings of the controller.
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Do not exceed a battery voltage of 48V (nominal). Do not use a battery less than
12V.
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Charge only 12, 24, or 48 volt lead-acid batteries when using the standard battery
charging programs or NI-CAD batteries when DIP Switch number 3~5 is in the ON
position in the SunWide.
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DO NOT short circuit the PV array or load while connected to the controller. This
will damage the controller.
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The controller should be protected from direct sunlight. Ensure adequate space for
air flow around the controller.
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Do not install a SunWide in a sealed compartment with batteries.
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Never allow the solar array to be connected to the SunWide with the battery
disconnected. This can be a dangerous condition with high open-circuit solar voltage
present at the terminals.
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Pressure terminal connectors are not required. Use only copperwire with minimum
75°C insulation rating and between 10 AWG (5.2 mm
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) and 14 AWG (2.1 mm
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)
gage.
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The negative system conductor should be properly grounded. Grounding should
comply with local codes.