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LightAlarms

Tel: (888) 552-6467 

Fax: (800) 316-4515

www.lightalarms.com

06/18 750.1783 Rev. G

4/12

LMIU 125/250/400W Mini Inverter

a.   Energize the AC supply. The Status Indicator will illuminate. Refer to the operation information below for more information about 

the Status Indicator.

b. Normally-ON fixtures shall be ON, Normally-OFF shall be OFF. Switched Emergency Fixtures shall be ON only when the switch is 

in the ON position.

c. Manually test the unit by pressing the test switch for 1 second and then release it. Refer to “MANUAL TEST” for more details.
d. If status LED is not green, reset the system. (Refer to “SYSTEM RESET”).
e. Properly re-install the cover of the Mini Inverter using all the original hardware.

 

 WIRING FOR NEXUS

®

 (OPTION)

a.   Route the NEXUS

®

 data cables in the unit and strip 30mm of the double insulation.The two cables 

are identical and both contain 2 wires of different colors: color A and color B.  

b. Gather the color A wire from each cable, and connect them to the same pole on the terminal block. 

Gather the color B wire from each cable, and connect them to the other pole on the terminal block. 
The result must be 2 wires of the same color in each pole on the terminal block.
See Figure on side.

c. Leave a minimum of one inch (25mm) between the live voltage cabling and the unsheathed low 

voltage data cabling.

NOTE: NO WIRING IS REQUIRED FOR THE NEXUS

®

 WIRELESS VERSION.

  

MANUAL TEST

A manual test is initiated once the test switch is pressed for 1 second and then released. The Status Indicator will start flashing green. 
The designated fixtures will either illuminate if they were off or will stay on if they were normally illuminated. Test duration is fixed at 1 
minute.

At the end of the 1-minute test, the unit will revert to recharge mode. The status indicator will be steady ON green if no fault has been 
detected. If a fault is detected, please refer to the  instructions on pages 8-9 for more details on the diagnostics and auto test features.

Allow the batteries to charge for a minimum of 48 hours after installation or power failure before conducting a 90-minute discharge test.
The Life Safety Code and the Authorities Having Jurisdiction require that the 90-minute discharge test be performed on an annual basis.

SYSTEM RESET

Resetting the system:
Depending on the sequence of installation, some units may require a system reset. To reset the system, press the test switch 
for 6 seconds.

STEP 6: COMPLETE THE INSTALLATION

1 inch

Wire 

Wire 
color A

color B

25mm

3

Summary of Contents for LMIU 125W

Page 1: ...onal Electrical Code and local regulations 12 The LMIU contains potentially hazardous voltages Installation maintenance and service work should be performed by qualified and trained personnel 13 Elect...

Page 2: ...TH NORMAL AND EMERGENCY SOURCES BY TURNING OFF THE A C BRANCH CIRCUIT AND BY DISCONNECTING THE BATTERY CAUTION BEFORE INSTALLING MAKE CERTAIN THE A C POWER IS OFF NOTE THE BATTERY S ARE SHIPPED SEPARA...

Page 3: ...specting the operating voltage All remote circuitry is to be wired in accordance with Article 700 of the National Electric Code Do not exceed the total rating of the Mini Inverter Unit is rated at max...

Page 4: ...e same color in each pole on the terminal block See Figure on side c Leave a minimum of one inch 25mm between the live voltage cabling and the unsheathed low voltage data cabling NOTE NO WIRING IS REQ...

Page 5: ...e of 20 to 30 C 68 to 86 F their life expectancy is 8 to 10 years However as stated above the equipment must be tested for a minimum of 90 minutes once per year When the batteries will no longer opera...

Page 6: ...tched Neutral Ground Line see note 3 see note 3 Wall Switch Normally ON Lighting Load Output Wiring Triac Dimmer Device Fluorescent LED Incandescent FIGURE 2A WIRING DIAGRAM SWITCHED NORMALLY ON LOAD...

Page 7: ...PUT POWER terminals 4 DO NOT COMBINE THE INPUT POWER NEUTRAL WITH THE LOAD NEUTRAL Un Switched see note 3 Line 120Vac Neutral 120V Neutral 120Vac Ground 0 10V FIGURE 2D WIRING DIAGRAM UN SWITCHED NORM...

Page 8: ...switch for at least 6 seconds The reset also initializes the main counter This renewal takes place to compensate for system variations when the unit ages Renewal is not allowed if there is a lighting...

Page 9: ...isabled during a power failure in order for the load to provide a 100 level of lighting The circuit consists of a single pole dry contact relay that is normally closed in stand by operation In emergen...

Page 10: ...not commissioned to the Nexus system Lamp load is OFF None if unit is in normally off mode Nexus option Unit is operating correctly Unit is not commissioned to the Nexus system LED flashing GREEN OFF...

Page 11: ...the batteries LED Flashing RED 2 times every 6 seconds Charger Failure Error Charger not working Reset the unit see page 4 and if the same error is displayed replace the charger board LED Flashing RED...

Page 12: ...CT CUSTOMER SERVICE FOR REPLACEMENT PARTS SERVICING MUST BE PERFORMED BY QUALIFIED PERSONNEL Consult Customer Service for current warranty information All information and specifications contained in t...

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