Installation Guide

Page 2
LITHONIA LEM EMERGENCY DRIVER
LEM_DRIVER.EPS
AC (NORMAL)
DRIVER
LEM
EMERGENCY DRIVER
LED
LOAD
WHITE
COMMON
AC INPUT (120 TO 277V)
SWITCHED OR
UNSWITCHED
HOT
BLUE (+)
BLUE / WHITE (-)
YELLOW (+)
YELLOW / BLACK (-)
LED INPUT(+)
LED INPUT (-)
LED OUTPUT (+)
LED OUTPUT (-)
UNIT
CONNECTOR
TEST ACCESSORY LEADS-OBSERVE PROPER
POLARITY WIRING.
MATE UNIT CONNECTOR AFTER INSTALLATION IS
COMPLETE AND AC POWER IS SUPPLIED
WALL SWITCH
WHITE
BLACK
VIOLET (+)
BROWN
BROWN
VIOLET (+)
INSTALLATION INSTRUCTIONS
WARNING: To prevent high voltage from being present on the YELLOW and YELLOW/BLACK output leads prior
to installation, the unit connectors must be open (disconnected.) Do not join the unit connector until installation is
complete and AC power is supplied to the emergency driver.
CAUTION: Before installing, make certain the A.C. power is o󰀨 and the LEM Emergency Driver unit
connector is disconnected.
Model
LEM04 A, LEM04 B
LEM08 A, LEM08 B
Output Wattage


TABLE A: Model Wattage
2. Mounting the LEM Emergency Driver
For LEM04 A and LEM08 A: The LEM Emergency Driver

For LEM04 B and LEM08 B: Mount the LEM Emergency Driver in the driver/lamp compartment or enclosed


the battery pack and the load.
Illustration 1
Test Switch/Indicator so that it can be seen after installation.
Illustration 2
VIOLET (+)
BROWN
FIXTURE
TEST SWITCH / INDICATOR
7/8" BUSHING
FIXTURE
CHANNEL COVER
PLASTIC TUBE
TBTS
FIXTURE LENS
LEM UNIT

TEST SWITCH / INDICATOR
LEM UNIT
3. Wiring
Refer to the wiring diagram below for the appropriate wiring of the LED load and driver. Install in accordance with
the National Electrical Code and local regulations. For additional wiring diagrams consult Customer Service.
1. System Compatibility
The LEM Emergency Driver can be used with most LED loads
that operate at 20-50 VDC.
1. The LEM Emergency Driver series has been evaluated to
and found compliant to UL standard 924. The as-installed
  
State, and Local code requirements.
 
based on the model (See Table A) and of the
forward voltage required to operate the LED array.
3. See Page 4 for methods to calculate emergency light levels.