Owner’s Manual |
GPR-25 Regulator
6
Carmanah Technologies Corp. Copyright © 2007
Document number: GPR-25_Manual_v4.doc
Last revised: June 21, 2007
5. Installation Instructions
1. Prepare for mounting.
Use the template provided at the end of the manual to mark the four
mounting holes and the
“cutting line for flush mounting”.
2. Complete the installation of the solar modules.
If this GPR-25 was purchased as part of a Go
Power! Electric Solar Kit, follow the RV Installation Guide provided. Otherwise follow manufacturer’s
instructions for module mounting and wiring.
3. Select wire type and gauge.
If this GPR-25 was purchased as part of a Go Power! Electric Solar Kit,
appropriate wire type, gauge, and length is provided. Please continue to Section 6, “Operating
Instructions”. If the GPR-25 was purchased separately, follow the instructions included here.
Wire type is recommended to be a stranded copper UV resistant wire. Wire fatigue and the likelihood of a
loose connection are greatly reduced in stranded wire compared to solid wire. Wire gauge should be able
to sustain rated current as well as minimizing voltage drop.
Suggested Minimum Wire Gauge
(Cable length 25 ft max. from solar array to battery bank)
50 Watt
#14 Wire Gauge
80 Watt
#12 Wire Gauge
115 Watt
#10 Wire Gauge
160 Watt
#10 Wire Gauge
240 Watt
#10 Wire Gauge
IMPORTANT:
Identify the polarity (positive and negative) on the cable used for the battery and solar
module. Use colored wires or mark the wire ends with tags. A reverse polarity contact, however brief,
will blow the regulator fuse and may damage the unit.
4. Jumper setting for sealed or flooded batteries.
Refer to the wiring schematic.
5. Wiring the GPR-25.
Wire the GPR-25 according to the wiring schematic. Run wires from the solar
modules and the batteries to the location of the GPR-25. Keep the solar module(s) covered with an
opaque material until all wiring is completed.
Connect the battery wiring to the regulator first and then connect the battery wiring to the battery.
The regulator should now be showing the battery voltage. Connect the solar wiring to the regulator
and remove the opaque material from the solar module(s). The negative solar array and battery
wiring must be connected directly to the regulator for proper operation.
Do not connect the negative solar array or negative battery regulator wiring to the chassis of the
vehicle.
6. Mounting the GPR-25.
Mount the GPR-25 to the wall using the included four mounting screws. Place
washers between the wall and the back of the faceplate to create a gap that provides airflow to the
back of the unit.
Congratulations, your controller should now be operational. If the battery power is low and the solar
modules are producing power, your battery should begin to charge.
6. Operating Instructions
When connected to solar modules and batteries, the GPR-25 will automatically begin to function. It will
regulate and monitor the battery state of charge. No further user intervention is necessary. The LCD
monitor will cycle between array current and battery voltage.
Summary of Contents for GPR-25
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