Lithonia Lighting 2x4 LED Troffer Light Instruction Manual

1. Product Overview

The Lithonia Lighting STACK Switch LED Troffer is a high-quality, energy-efficient lighting fixture designed for dropped ceiling applications. It features adjustable lumen output and switchable color temperature, allowing for customization to suit various environments such as offices, classrooms, and commercial spaces. Its slim design facilitates easy installation in restrictive plenum settings.

This fixture is engineered for superior quality and extended service life, utilizing long-life LEDs and high-efficiency drivers. The wide center basket and curved matte reflector ensure optimal light diffusion and enhanced aesthetics.

2. Safety Information

WARNING: Risk of electric shock. Disconnect power at the fuse or circuit breaker before installation or servicing.

• Read all instructions before installing.
• Installation must be performed by a qualified electrician in accordance with national and local electrical codes.
• Ensure the supply voltage is correct for the fixture (120 Volts).
• Do not handle energized fixture with wet hands.
• Do not install near combustible materials.
• This fixture is suitable for damp locations and is IC rated.

3. Package Contents

Verify that all components are present before beginning installation:

• Lithonia Lighting 2x4 LED Troffer Light Fixture (Model: STAKS 2X4 ALO6 SWW7)
• Installation Hardware (typically includes mounting clips/brackets)
• Product Guide / Instruction Manual

Image 3.1: The Lithonia Lighting 2x4 LED Troffer Light fixture.

4. Setup and Installation

The STACK Switch LED Troffer is designed for easy installation in standard 15/16 inch and narrow 9/16 inch T-grid ceiling systems. Its shallow depth of 1.9 inches allows for installation in tight plenum spaces.

For detailed step-by-step installation instructions, please refer to the official Installation Manual PDF: Installation Manual (PDF).

Image 4.1: Diagram highlighting easy installation and other features of the STACK Switch LED Lay-in.

Image 4.2: Detailed dimensions of the 2x4 LED Troffer Light, showing 47.75 inches length, 23.75 inches width, and 1.9 inches depth.

5. Operating Instructions

The Lithonia Lighting STACK Switch LED Troffer offers flexibility in both lumen output and color temperature, which can be adjusted using integrated switches on the fixture.

5.1. Adjusting Lumen Output

The fixture provides three selectable lumen options: 4000, 5000, and 6000 lumens. A switch located on the driver box allows you to select the desired brightness level before or during installation. This feature enables optimization for various mounting heights and room sizes.

5.2. Adjusting Color Temperature

The color temperature can also be switched between three options: 3500K (Neutral White), 4000K (Cool White), and 5000K (Daylight). A separate switch on the fixture's driver box controls this setting, allowing you to fine-tune the ambiance of your space.

Image 5.1: Illustration indicating the position of the lumen and color temperature selection switches on the fixture's driver box.

Image 5.2: Visual guide demonstrating the appearance of different color temperatures: 2700K (Soft White), 3000K (Warm White), 3500K (Neutral White), 4000K (Cool White), and 5000K (Daylight).

6. Maintenance

LED fixtures require minimal maintenance. To ensure optimal performance and longevity:

• Cleaning: Periodically clean the diffuser with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or optical components. Ensure the fixture is powered off and cool before cleaning.
• Inspection: Regularly inspect the fixture for any signs of damage, loose connections, or unusual operation. If any issues are observed, consult a qualified electrician.
• LED Longevity: The integrated LEDs are designed for a long operational life of up to 60,000 hours (L80/60,000), meaning they will maintain 80% of their initial lumen output for this duration. No bulb replacement is necessary.

7. Troubleshooting

If you encounter issues with your Lithonia Lighting LED Troffer, consider the following common troubleshooting steps:

• No Light: Check the circuit breaker or fuse. Ensure all electrical connections are secure. Verify the fixture is receiving power.
• Flickering Light: Confirm stable power supply. Ensure all wiring connections are tight.
• Incorrect Light Output/Color: Verify the lumen and color temperature switches are set to the desired positions.

For more comprehensive troubleshooting, please refer to the official Troubleshooting Guide PDF: Troubleshooting Guide (PDF).

8. Specifications

9. Warranty and Support

This Lithonia Lighting LED Troffer comes with a 5-year limited warranty from the manufacturer. Please retain your proof of purchase for warranty claims.

For additional support, user guides, or to contact customer service, please visit the official Lithonia Lighting website or refer to the following documents:

• Instructions for Use (IFU) (PDF)
• User Guide (PDF)
• User Manual (PDF)