Xantrex 781-0110 Installation Manual

The Xantrex 781-0110 is a power inverter/charger designed for marine and RV applications, providing reliable AC power from DC battery sources. It features pure sine wave output, automatic transfer switching, battery charging capabilities, remote control compatibility, and comprehensive protection systems. Below are key sections for safety, installation, configuration, operation, and troubleshooting.

1. Features at a Glance 2. Safety Precautions 3. Installation Requirements 4. Specifications 5. Wiring Diagrams 6. Mounting Instructions 7. Configuration & Setup 8. Remote Control Setup 9. Operation Guidelines 10. Maintenance 11. Troubleshooting

Features at a Glance

Key components: Inverter/Charger unit, Remote Control Panel, DC input terminals, AC input/output terminals, Communication port, Cooling fan, Status indicators.

Feature	Description
Pure Sine Wave Output	Clean AC power compatible with sensitive electronics
Automatic Transfer Switch	Seamlessly switches between shore power and inverter power
Battery Charger	Multi-stage charging for extended battery life
Remote Control Capability	Monitor and control from remote location
Protection Systems	Overload, over-temperature, low battery voltage protection
DC Input Terminals	For battery bank connection
AC Input Terminal	For shore power/generator connection
AC Output Terminal	For AC load distribution
Communication Port	For remote monitoring and firmware updates
Status LEDs	Visual indicators for operation mode and faults

Safety Precautions

Read all instructions before installation. Ensure proper ventilation and clearance.

Disconnect all power sources before installation: Disconnect battery and shore power.
Use appropriate personal protective equipment: Safety glasses and insulated tools.
Ensure proper cable sizing: Follow specifications for DC and AC wiring.
Install in dry, well-ventilated location: Avoid areas with excessive moisture or heat.

WARNING! High voltage present at terminals. Risk of electric shock or fire if improperly installed. Install circuit breakers as specified.

Installation Requirements

Verify all components are present and undamaged before proceeding.

Tools required: Insulated screwdrivers, wire cutters/strippers, torque wrench, multimeter.
Materials required: Appropriate gauge cables, lugs, circuit breakers, mounting hardware.
Location requirements: Minimum 6 inches clearance on all sides for ventilation.
Mounting surface: Solid, non-combustible material capable of supporting unit weight.

CAUTION! Unit is heavy; use two people for handling and mounting.

Specifications

Model: Xantrex 781-0110
Continuous Power Output: 2000W (3000W surge)
Input Voltage: 12V DC nominal (10.5-15V DC range)
Output Voltage: 120V AC ±3%
Frequency: 60Hz ±0.1Hz
Efficiency: >90% at full load
Battery Charger: 80A maximum charge current
Transfer Time: <20 milliseconds
Operating Temperature: -4°F to 122°F (-20°C to 50°C)
Dimensions: 19.7" x 11.8" x 6.3" (500mm x 300mm x 160mm)
Weight: 44 lbs (20 kg)

Wiring Diagrams

Refer to diagrams for proper connection of DC battery bank, AC input, and AC output.

DC Connection: Connect positive battery cable to DC+ terminal, negative to DC- terminal. Install appropriate DC circuit breaker within 18 inches of battery.

AC Connection: Connect shore power to AC INPUT terminals (L, N, G). Connect AC loads to AC OUTPUT terminals. Ensure proper grounding.

Remote Connection: Connect remote control cable to communication port using provided connector.

Mounting Instructions

Mount unit vertically on solid surface using provided hardware.

Mark mounting holes using template provided.
Drill pilot holes for mounting screws.
Lift unit into position with assistance.
Secure with all four mounting screws, tightening to specified torque.
Ensure unit is level and secure before proceeding with wiring.

Tip: Mount in location accessible for maintenance but protected from elements.

Configuration & Setup

Configure settings for your specific battery type and application requirements.

Battery Type Selection: Set for Flooded, AGM, or Gel cell batteries.
Charge Parameters: Configure absorption voltage, float voltage, and equalization settings.
AC Input Current Limit: Set maximum current draw from shore power.
Search Mode: Enable/disable power saving search mode.
Transfer Sensitivity: Adjust transfer switch sensitivity if needed.

WARNING! Incorrect battery settings can damage batteries. Consult battery manufacturer specifications.

Remote Control Setup

Install and configure remote control panel for monitoring and control.

Mount remote panel in convenient location using provided hardware.
Connect communication cable between inverter and remote panel.
Power on system to initialize communication.
Configure display preferences on remote panel.
Test all remote functions: On/Off, mode selection, parameter viewing.

Operation Guidelines

Normal operation procedures and best practices.

Power On Sequence: Connect DC power first, then AC input if available.
Mode Selection: Choose between Inverter Only, Charger Only, or Auto modes.
Load Management: Ensure connected loads do not exceed rated capacity.
Monitoring: Regularly check status indicators and remote panel readings.
Shutdown: Disconnect AC loads before turning off unit.

CAUTION! Do not operate with cover removed. Keep ventilation openings clear.

Maintenance

Regular maintenance ensures optimal performance and longevity.

Monthly: Check all connections for tightness. Clean ventilation openings. Inspect for corrosion.

Quarterly: Verify proper operation of cooling fan. Check battery connections and condition.

Annually: Perform full system inspection. Test all protection features. Update firmware if available.

CAUTION! Disconnect all power sources before performing any maintenance.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No AC output	Low battery voltage	Check battery voltage and connections; recharge batteries.
Unit shuts down under load	Overload or overheating	Reduce connected load; ensure proper ventilation.
Battery not charging	AC input not detected	Verify shore power connection and circuit breaker status.
Fault LED illuminated	Various protection triggers	Check error code on remote panel; refer to fault code chart.
Remote panel not working	Communication cable issue	Check cable connections; ensure proper termination.
Excessive noise from unit	Cooling fan obstruction	Clean fan and ventilation openings; ensure free airflow.

Reset Procedure: Disconnect all power sources for 5 minutes, then reconnect.

Technical Support: 1-800-670-0707; www.xantrex.com