Lithonia Lighting LEM04 Instruction Manual Download Page 2

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

BROW

N

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 off and the LEM Emergency Driver unit 

connector is disconnected.

Model

LEM04 A, LEM04 B
LEM08 A, LEM08 B

Output Wattage

4 watts (approx.)
8 watts (approx.)

TABLE A: Model Wattage

2.  Mounting the LEM Emergency Driver

For LEM04 A and LEM08 A: The 

LEM Emergency Driver

 should be mounted on or nearby the fixture above the 

ceiling. Route the flexible conduit to the fixture or junction box to make the necessary connections. 

For LEM04 B and LEM08 B: Mount the 

LEM Emergency Driver

 in the driver/lamp compartment or enclosed 

wireway so the wire leads are not exposed at least 1/2” away from the normal driver. Refer to Illustrations 1 and 2.

When battery packs are remote mounted, consult Customer Service for the maximum allowable distance between 

the battery pack and the load.

Illustration 1          

NOTE: Position the 

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

OBSERVE PROPER POLARITY

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  

    performance of system must meet or exceed all Federal, 

 

    State, and Local code requirements.

  2. Approximate output power of the LEM Emergency Driver is  

    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. 

Summary of Contents for LEM04

Page 1: ...mpering by unauthorized personnel 9 The LEM emergency driver will supply 20 50VDC output at the individual rated specification for 90 minutes 10 This product is suitable for use in damp locations where the ambient temperature is 0ºC minimum 50ºC maximum Product is also suitable for installation in sealed and gasketed fixtures Product is not suitable for heated air outlets and wet or hazardous loca...

Page 2: ... For LEM04 B and LEM08 B Mount the LEM Emergency Driver in the driver lamp compartment or enclosed wireway so the wire leads are not exposed at least 1 2 away from the normal driver Refer to Illustrations 1 and 2 When battery packs are remote mounted consult Customer Service for the maximum allowable distance between the battery pack and the load Illustration 1 NOTE Position the Test Switch Indica...

Page 3: ...y charging mode The Test Switch Charge Indicator will be lit providing a visual indication that the bat tery is being charged Emergency Mode The A C power fails The LEM Emergency Driver senses the A C power failure and automati cally switches to the Emergency Mode The designated LED array will illuminate for a minimum of 90 minutes When the A C power is restored the LEM Emergency Driver switches t...

Page 4: ...ts can be paired with LED luminaires or retrofit kits if found in the Design Lights Consortium database Go to the Design Lights Consortium website http www designlights org and search for your LED system by model name or model number If found in the database these products are preapproved by UL to be installed together in the field or at a luminaire manufacturer provided steps are taken to ensure ...

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