Ledra Brands ALPHABET NU4QA-TW Installation Instructions Download Page 2

v.7.18.19

Ledra Brands Inc.

www.LedraBrands.com

In a continuing effort to offer the best product possible we reserve the right to change, without notice, specifications or materials that in our opinion will not alter the function of the product.

15774 Gateway Circle    Tustin, CA 92780

P 714.259.9959    F 714.259.9969

STEP 1C - RETROFIT: 

NEW CONSTRUCTION MOUNTING PLATE

 (NOT FOR USE WITH RETROFIT)

RETROFIT VERSION

HOLE CUTOUT 4-1/4

"

 SQUARE

Carefully remove bezel from LED Module Assembly. Use fingers to pull bezel away from LED

Module Assembly. For lens option, use suction cup (provided) to remove bezel. Sharp or flat 

objects not recommended as they can damage the bezel or snap locks.

Connect the (2) sets of quick disconnect from driver compartment to LED Module Assembly.

Insert the LED Module Assembly through the ceiling cutout and aim light to desired position.

Hand tighten the Phillips head fastening screws to secure the LED Module Assembly to the 

New Construction Mounting Plate. Ensure the LED Module Assembly is securely fastened

against the ceiling but has not recessed into soft ceiling tiles due to over tightening.

Energize circuit and test for proper operation.

Adjust hot Aiming Screw to fine tune light beam direction using Phillips screwdriver. For fine

tuning rotational adjustment, loosen rotation lock screw, reposition as desired, and secure

rotation lock screw.

Carefully insert bezel (or lens) into LED Module Assembly. Press firmly until it snaps into place.

Follow compatible control instructions for CCT and light intensity control. Controls not included.

(provided by others)

NU Series 

Tunable White

CCT

Light Intensity

120/277VAC

50/60Hz INPUT

0-10V INPUT #2

0-10V INPUT #1

STANDARD 0-10V SWITCHES

NU Series 

Tunable White

Integrated

Antenna

COMPATIBLE WIRELESS SWITCHES

CASAMBI™ APP (IOS & Android) 

Wireless Commissioning, 

CCT & Light Intensity Control

CCT & Light Intensity Control

120/277VAC

50/60Hz INPUT

“CAS” CASAMBI CONTROLS

STEP 2 - FIXTURE INSTALLATION: 

STEP 3 

STEP 4 

STEP 5 

STEP 6 

STEP 7 

STEP 8 

STEP 9 

WIRING DIAGRAMS

INSTRUCTIONS FOR USE

De-energize circuit before installation.

Ensure placement of fixture will accommodate New Construction Mounting Plate and LED 

Module Assembly. Adjust bar hangers to size and secure New Construction Mounting Plate 

as required using integral nails and screws or suspend in T- Bar grid ceiling. Ensure the 

fixture is properly supported and attached to building. Refer to product cut sheet and cut 

hole into ceiling as required. Feed building flexible electrical conduit through ceiling cutout 

and ensure enough conduit length for future serviceability. Open driver compartment and 

use knockout to connect building electrical using appropriate hardware. (Hardware not 

provided). Connect line, neutral, and ground wires to building electrical supply. Close driver 

compartment. For future servicing, do not attach to driver to any structure.

Ensure placement of fixture will accommodate New Construction Mounting Plate and LED 

Module Assembly. Adjust bar hangers to size and secure New Construction Mounting Plate 

as required using integral nails and screws or suspend in T- Bar grid ceiling. Ensure the 

fixture is properly supported and attached to building. Refer to product cut sheet and cut 

hole into ceiling as required. Feed building flexible electrical conduit through ceiling cutout 

and ensure enough conduit length for future serviceability. Open driver compartment and 

use knockout to connect building electrical using appropriate hardware. (Hardware not 

provided). Connect line, neutral, and ground wires to building electrical supply. Close driver 

compartment. For future servicing, do not attach to driver to any structure.

STEP 1A- EXISTING CEILING:

STEP 1B NEW CONSTRUCTION: 

Installation Screw

Installation Screw

Rotation Lock Screw

Hot Aiming Screw

“DIM10Z” HARDWIRED 0-10V CONTROL

New Construction Mounting Plate not used. Ensure area above finished ceiling will

accommodate placement of fixture and driver compartment. Refer to product cut sheet 

and cut hole into ceiling as required. Feed building flexible electrical conduit through

ceiling cutout and ensure enough conduit length for future serviceability. Open driver

compartment and use knockout to connect building electrical using appropriate hardware.

(Hardware not provided). Connect line, neutral, and ground wires to building electrical 

supply. Close driver compartment. For future servicing, do not attach to driver to any 

structure.

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