Lithonia Lighting 2BLT2: 2'x2' Volumetric Recessed LED Luminaire

Product Overview

The Lithonia Lighting 2BLT2 is a versatile 2'x2' volumetric recessed LED luminaire designed for commercial applications. It offers a clean, low-profile design (2-3/8" depth) suitable for new construction and renovations, providing energy savings and low maintenance through high-efficacy LED technology.

Key Features & Specifications

• Intended Use: Commercial spaces (schools, offices, retail, healthcare).
• Design: Popular center basket design, low profile (2-3/8").
• Construction: Die-formed components with proprietary paint blend. Integral T-bar clips for easy installation.
• Diffusers: Impact-modified acrylic for durability, available in curved/square, ribbed/smooth frosted finishes.
• Optics: Volumetric illumination for balanced light distribution. Unified Glare Rating (UGR) starting at 18.
• Electrical: Long-life LEDs, high-efficiency drivers. 80% lumen maintenance at 60,000 hours (L80/60,000). 3-step MacAdam ellipse (3SDCM) color variation. 0-10V dimming standard.
• High Efficiency (HE) Versions: Deliver >130 LPW.
• Lumen Management (N80): Maintains constant lumen output over system life.
• Step-Level Dimming: Allows switching to 50% power for code compliance.
• Controls: Optional integrated nLight (wired/wireless) and SensorSwitch (wired/wireless) controls for addressable and standalone operation.
• Installation: Designed for NEMA standard grid ceilings (Type G, NFG, SS). Drywall Grid Adapters (DGA) available. Suitable for damp locations.
• Listings: CSA Certified, IC rated, ISO 5-9 cleanroom compatible, DLC Premium qualified.
• Government Procurement: BAA and BABA qualified options available.
• Warranty: 5-year limited warranty.

Ordering Information

The 2BLT2 offers a modular ordering system with options for Fixture Style, Air Function, Lumens, Diffuser, Voltage, Driver, Color Temperature, nLight Interface, and Controls. Consult the detailed ordering guide for specific configurations.

Example Configuration: 2BLT2 33L ADP EZ1 LP835

Key Ordering Categories:

• Series: 2BLT2
• Fixture Style: Smooth Reflector (blank) or Ribbed Reflector (RB)
• Air Function: Static (blank) or Air Supply/Return (A)
• Lumens: Standard (20L, 33L, 40L, 48L) or High Efficiency (20LHE, 33LHE, 40LHE, 48LHE)
• Diffuser: Curved Ribbed (ADP), Curved Smooth (ADSM), Square Ribbed (SDP), Square Smooth (SDSM), Low UGR (LUGR), with trim options available.
• Voltage: MVOLT (120-277V) or 347V
• Driver: EZ1 (0-10V dimming to 1%), GZ1, GZ10, SLD (Step-level dimming)
• Color Temperature: 3000K (LP830), 3500K (LP835), 4000K (LP840), 5000K (LP850), with 82CRI or 90CRI options.
• nLight Interface: Wired (N80, N100) or Wireless (NLTAIR2)
• Controls: Various nLight (NES7, NESPDT7, etc.) or SensorSwitch (MSD7ADCX, etc.) options.

Note: Specific option combinations may have restrictions.

Lighting Controls Integration

The 2BLT2 integrates seamlessly with Lithonia Lighting's nLight® and SensorSwitch™ control platforms, offering both wired and wireless solutions for enhanced building automation, energy management, and occupant comfort.

nLight® Platform

A networked lighting controls platform for indoor and outdoor applications. It scales from room to campus-wide deployments, enabling energy cost optimization, code compliance, and improved occupant comfort. nLight supports wired and wireless options, including integration with DALI®, BACnet®, and DMX.

• Wired: Luminaires connect via standard CAT-5e cables. Devices self-commission for plug-and-play convenience.
• Wireless (nLight AIR): Utilizes wireless wall switches and sensors, commissioned via the CLAIRITY+ mobile app.

SensorSwitch™ Platform

Offers standalone wired and wireless controls for room-based applications, providing reliable performance and ease of installation.

• Wired: Luminaires connect to wall switches via wiring.
• Wireless: Pairing is done via a tool, allowing fixtures to dim to 10% brightness.

Sensor Options: Various PIR and Dual Technology occupancy sensors with automatic dimming photocells are available, compatible with nLight Wired, nLight AIR, and standalone SensorSwitch systems.

Performance Data

The 2BLT2 offers high performance with excellent lumen output and efficacy.

Lumen Output & Efficacy

Standard configurations provide robust lumen packages, while High Efficiency (HE) versions exceed 130 LPW. For example, a 33L ADP LP835 model delivers 3332 lumens at 124.92 LPW.

Unified Glare Rating (UGR)

UGR values are provided for various configurations, typically starting at 18. These values are based on specific room reflectance and size parameters. Detailed UGR tables are available in the product documentation.

[Link to full photometry and Revit (BIM) data available on the Lithonia Lighting website.]

Constant Lumen Management

The optional nLight Lumen Management system (N80) actively manages the LED light source to maintain consistent lumen output over the fixture's lifespan, preventing energy waste from over-lighting.

Emergency Lighting Options

The 2BLT2 is available with field-installable emergency battery pack options to ensure continued illumination during power outages.

Emergency Battery Packs

• Various wattages (7W, 10W, 15W, 20W) and runtimes (120 minutes) are available.
• Options include Self-Testing Automated Reporting (STAR) and Self-Diagnostic features.
• Models like ILB CP10 HE AELR A and ILBLP CP10 HE SD A are Title 20 compliant.

STAR System (Self-Testing Automated Reporting)

STAR technology automates emergency lighting testing and reporting to comply with Life Safety Code NFPA 101. It performs self-testing (30-second tests every 30 days, 90-minute tests annually) and automated reporting.

• Mobile STAR: Test data logged per unit, broadcast to CLAIRITY+ app.
• Connected STAR: Test data logged via STAR Gateway by IOTA®, emailed directly.

Accessories & Replacement Parts

Optional accessories and replacement parts are available to enhance functionality and maintain the luminaires.

Accessories

• DGA22: Drywall grid adapter for 2'x2' recessed fixtures.
• 2X2SMKSHP PAF: Surface Mount Troffer Kit.
• Disconnect Plugs (BDP): Available in 2-pole and 3-pole packages.

Replacement Parts

Various lens assemblies are available for 2-foot replacement.

Diagram Descriptions

Sensor Coverage Pattern (Mini 360° Lens)

This diagram illustrates the coverage pattern of the Mini 360° Lens sensor. It is recommended for walking motion detection from mounting heights between 8 ft (2.44 m) and 20 ft (6.10 m). Initial detection of walking motion along sensor axes occurs at distances of 2x the mounting height up to 15 ft (4.57 m) and 1.75x up to 20 ft (6.10 m). It provides 12 ft (3.66 m) radial detection of small motion when mounted at 9 ft (2.74 m). Detection is earlier when walking across the sensor's field of view compared to walking directly towards it.

Sequence of Operation (Sensor Examples)

These diagrams show typical sensor operation. When motion is detected, lights turn ON. After a set time delay (e.g., 2.5 minutes at 1% level), if no motion is detected, lights turn OFF. Automatic dimming photocells adjust light levels based on ambient light, with presets typically at 5fc or 10fc.

nLight & SensorSwitch Control Diagrams

Visual guides illustrate the installation and connection of wired and wireless controls for both nLight and SensorSwitch systems, showing how luminaires connect to wall switches and sensors.

Mobile STAR vs. Connected STAR

The STAR system offers two deployment options: Mobile STAR for small-scale applications, where test data is logged per unit and broadcast to the CLAIRITY+ app; and Connected STAR for large-scale applications, where data is logged via a STAR Gateway by IOTA® and emailed directly.

Detailed Performance Data

Performance Data Summary

DLC information is subject to change; refer to www.dlc.org. Above listings do not cover 347v or SLD.

HE Performance Data Summary

DLC information is subject to change; refer to www.dlc.org. Above listings do not cover 347v or SLD.

Note on Emergency Lumens: Delivered Lumens = 1.25 x P x LPW, where P is output power of emergency driver (e.g., 10W for E10WLCP).

Unified Glare Rating (UGR)

UGR values vary based on luminaire options and application parameters. The following table provides typical values for the BLT 2x2 @ 80CRI and 3500K, using a 4H x 8H room size with 70%/50%/20% reflectance.

To determine a more precise maximum UGR value ("Application-UGR"), a full lighting design layout should be completed with the selected luminaire configuration for each application.