NOCO IGD200HP High-Performance Battery Isolator User Manual

1. Introduction

The NOCO IGD200HP High-Performance Battery Isolator is a solid-state electrical device designed to manage multiple battery banks in a vehicle or marine application. Its primary function is to eliminate multiple battery drain and prolong battery life by ensuring that auxiliary batteries do not discharge the starting battery. This unit is suitable for alternators rated 200 amperes or less and is compatible with Delcotron Series alternators. It is ideal for recreational vehicles (RVs), boats, cars, utility vehicles, and trucks.

2. Product Features

• Designed for alternators 200 amperes or less and accommodates Delcotron Series alternators.
• Eliminates multiple battery drain, preventing auxiliary batteries from discharging the main starting battery.
• Enables charging of multiple batteries or battery banks simultaneously from a single alternator.
• Utilizes solid-state technology for reliable and efficient operation.
• Provides full current with either leg, ensuring consistent power distribution.

3. Safety Information

Please read and understand all safety instructions before installing or operating the NOCO IGD200HP Battery Isolator. Failure to follow these instructions may result in electrical shock, fire, or serious injury.

• Always disconnect the vehicle's battery ground cable before performing any electrical work.
• Wear appropriate personal protective equipment, including eye protection, during installation.
• Ensure all wiring connections are secure and properly insulated to prevent short circuits.
• Install appropriate fuses or circuit breakers on all battery cables connected to the isolator, as close to the battery terminals as possible, to protect against overcurrent.
• This device is designed for negative ground systems only.
• If you are unsure about any part of the installation process, consult a qualified automotive or marine electrician.

4. Setup and Installation

Proper installation is crucial for the safe and effective operation of the battery isolator. The NOCO IGD200HP is designed for 12-48 VDC nominal negative ground systems.

4.1 Mounting Location

Select a mounting location that is dry, well-ventilated, and protected from excessive heat, moisture, and vibration. The isolator should be mounted securely to a solid surface. Consider the physical dimensions of the unit (approximately 30.99 x 13.72 x 10.41 cm) when choosing a location.

4.2 Wiring Connections

The IGD200HP features multiple terminals for connecting to your electrical system. Refer to the diagram below for a visual representation of the connections.

1. Alternator Connection: Connect the output cable from your alternator to the designated alternator terminal on the isolator. Ensure this cable is appropriately sized for the alternator's maximum output current and protected by a fuse or circuit breaker.
2. Starting Battery Connection: Connect a cable from the starting battery's positive terminal to the designated 'Battery 1' terminal on the isolator. This cable must also be properly sized and fused.
3. Auxiliary Battery Connection: Connect a cable from the auxiliary battery's positive terminal to the designated 'Battery 2' terminal on the isolator. This cable should also be properly sized and fused.
4. Ground Connection: Ensure all batteries and the alternator are properly grounded to the vehicle chassis or common ground point. The isolator itself does not require a separate ground connection as it operates within the existing negative ground system.
5. Excitation/Sense Wire (if applicable): Some alternators require an excitation or sense wire to function correctly with an isolator. Consult your alternator's manual or a qualified technician if your system requires this. The IGD200HP has a terminal for 'Delcotron Excitation' if needed.

After all connections are made, double-check their security and insulation before reconnecting the vehicle's main battery ground cable.

5. Operating Instructions

The NOCO IGD200HP High-Performance Battery Isolator operates automatically once correctly installed. When the engine is running and the alternator is producing charge, the isolator will allow current to flow to both the starting battery and the auxiliary battery, charging them simultaneously. When the engine is off, the solid-state design prevents the auxiliary battery from drawing power from the starting battery, thus protecting the starting battery from discharge.

6. Maintenance

The NOCO IGD200HP Battery Isolator is a solid-state device and generally requires no routine maintenance. However, periodic inspection is recommended:

• Inspect all electrical connections for tightness and corrosion. Clean any corroded terminals.
• Check wiring for any signs of wear, fraying, or damage. Replace damaged wiring immediately.
• Ensure the isolator remains securely mounted and free from excessive dirt or debris.

7. Troubleshooting

If you experience issues with your battery charging system after installing the IGD200HP, consider the following:

• No Charge to Auxiliary Battery: Check all connections to the isolator and auxiliary battery for looseness or corrosion. Verify that the alternator is functioning correctly and producing output. Check any inline fuses or circuit breakers for continuity.
• Starting Battery Drains: Ensure all connections are correct and that the isolator is functioning to prevent back-drain. Check for any parasitic draws on the starting battery unrelated to the isolator.
• Overheating Isolator: While the IGD200HP is designed for high performance, excessive heat can indicate an issue. Ensure proper ventilation around the unit and that the alternator output does not exceed the isolator's 200A rating.

If problems persist, consult a qualified technician or contact NOCO customer support.

8. Specifications

9. Warranty and Support

Warranty information for the NOCO IGD200HP High-Performance Battery Isolator is typically provided with the product packaging or available on the official NOCO website. For technical support, troubleshooting assistance, or warranty claims, please visit the NOCO website or contact their customer service department directly. Ensure you have your product model number (IGD200HP) and purchase details available when seeking support.