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Page7
PV7-PV14 manual.doc
For Dual Battery Charging Models
6.
If you will be using the PV7D’s dual battery charging feature, Splice a #14 too #10 AWG
yellow wire to the YELLOW BAT(2)+ WIRE
on the controller, and connect it to the SECOND
BATTERY BANK’S positive (+) terminal and/or the second system's positive battery bus. If
you will not be using the dual battery charging feature simply tape or place a wire nut over
the end of the yellow wire to isolate it electrically and protect it from moisture.
Expanding to Charge Additonal Battery Banks (PV7 and PV7D Only)
7. To modify/expand the PV7 and PV7D controllers to charge multiple battery banks please
follow these additional steps.
a)
Obtain the appropriate quantity of 8A 80SQ045 Schottky diodes required for your
application (One for each additional battery bank).
The Diodes are available from
Flexcharge directly, or through our dealers.
b)
Solder a piece of #16 to #14 AWG stranded wire to each lead on the diode.
Excess heat,
mechanical stress and electrostatic discharge will damage these diodes. An acceptable
alternative to soldering is to connect the diode leads directly into a terminal block that will
accept #20 to #12 AWG solid or stranded wire. It must have screw tightened terminals to hold
the wires in place. Make sure the diode’s leads are insulated and cannot come in contact with
other wires, or the ground buss.
8. Additional steps to expand the PV14 for High Ampere charging.
A. Obtain the appropriate contactors (relays) from a Flexcharge dealer or Flexcharge directly.
B.
After mounting the contactor(s) vertically within 50 feet of the PV14 Controller, connect a #20 to
#14 AWG wire
at the splice where the controller’s RED BAT+ wire connects to the wire from the
battery’s positive terminal. Using the same size wire, connect the opposite end of the wire to the
top connection of the contactor(s)
9. Connect the controller’s Orange wire to the lower terminals of the contactor(s)
If the controller does not function as you think it should, first check the
troubleshooting guide in this manual, then call your dealer or Flexcharge USA at
the numbers shown below
HOOKUP WIRE SIZE CHART
This chart provides the minimum wire size to minimize power loss. Larger wires
would are always better for operating efficiency
Max Charging Capacity
WIRE SIZE FOR 1 TO
10FT LENGTHS
WIRE SIZE FOR 10 TO
20FT LENGTHS
OA TO 3A
#14 AWG
#12 AWG
3A TO 6A
#12 AWG
#12 AWG
6A TO 12A
#10 AWG
#10 AWG
12A TO 18A
#10 AWG
#8 AWG
