Instruction Manual

Installation
2–12 975-0400-01-01 Revision H
This manual is for use by qualified personnel only.
These voltage levels on both battery and auxiliary outputs are considered safe,
extra-low voltages and do not present a hazard as long as the PV terminals are
kept floated or ungrounded.
Follow the instructions in Chapter 2, “Installation” for connecting the PV array and
battery to the unit. Next, follow these steps for a safe, negative voltage reference
connection:
1. Disable the solar charge controller’s internal PVGFP circuit. See “Disabling
the Charge Controller’s Internal PVGFP Circuit” on page 2–12.
2. Make sure PV array terminals (positive and negative) are ungrounded.
3. Make sure auxiliary terminal lines (positive and negative) are ungrounded.
4. Ground the positive terminal of the battery only.
Disabling the Charge Controller’s Internal PVGFP Circuit
Before grounding the positive battery terminal to obtain a negative reference
voltage, you must disable the solar charge controller’s internal PVGFP circuit.
To disable the PVGFP circuit, remove the small jumper connector located on the
circuit board within the wiring compartment of the unit. See Figure 2-8 for the
jumper location. After removal, the jumper can be stored on a single pin of the 2
pin connector or moved into the location marked for units with a 3-pin connector.
DANGER
ELECTRIC SHOCK HAZARD
Disconnect positive and negative PV and battery circuits before accessing the
solar charge controller’s wiring compartment.
Failure to follow these instructions will result in death or serious injury.