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06/18 750.1783 Rev. G
3/12
LMIU 125/250/400W Mini Inverter
INSTALLATION
a. Remove the front cover of the Mini Inverter by removing the two screws at the top of the cover.
b. Extend the unswitched, properly-rated voltage AC supply and remote fixture wires to the installation area.
c. Use keyhole slots at the rear of the unit and mount the Mini Inverter securely to the wall.
d. Connect the conduit containing the AC supply and remote fixture leads to the Mini Inverter. Use the provided knock-outs on the
side of the Mini Inverter for connecting the incoming wires.
e. Install the batteries at this time, but do not connect the battery leads until other wiring is completed.
NOTE: For Ceiling Mount Application , the Mini Inverter requires a minimum of 12
″
clearance all around the unit and 2
″
above.
a. Remove the side cover from the Mini Inverter.
b. Remove the ceiling tile in the desired installation location.
c. Extend the unswitched, properly-rated voltage AC supply and remote fixture wires to the installation area.
d. Place the Mini Inverter across the 2
′
T-bars of the ceiling grid. Support the unit with wires attached to the building steel framing.
Holes are provided at the top of the Mini Inverter to support wire connection.
e. Connect the conduit containing the AC supply and remote fixture leads to the Mini Inverter. Use the provided knock-outs on the
Mini Inverter for connecting the incoming wires.
f. After installation is complete, replace properly-sized tile into the ceiling grid. The tile should rest on the flange of the Mini Inverter.
a. For 120V supply, connect the AC Line wire to the 120V (UN-SWT) position of the INPUT POWER section of the terminal block.
For 277V supply, connect the AC Line wire to the 277V (UN-SWT) position of the INPUT POWER section of the terminal block.
b. Connect the NEUTRAL wire to the NEUTRAL position of the INPUT POWER section of the terminal block.
c. Connect the ground wire in accordance with local and national codes.
d. For Nexus wired (option): Refer to the “WIRING FOR NEXUS
®
” on the page 4.
a. Connect the remote emergency fixtures to the correct position of the OUTPUT terminal block, respecting 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 maximum Watt and maximum VA, where Max.W = Max.VA. Total load (W) must be
derated when load power factor (PF) is less than 0.9 (for maximum rating).
Special attention shall be taken when load
consists of LED lamps with no built-in power factor correction. Example: most of the single LED lamps (Screw-on, GU-10, etc.)
have a power factor of less than 0.6. This translates to a derating close to 50%.
b.
NORMALLY-OFF FIXTURES (only come on during power failure)
- Connect the AC Line input wire of the fixtures to the
appropriate position of the LOAD terminal block (120V OR 277V). Connect the fixture Neutral to the Neutral position of the LOAD
terminal block. Refer to Figure 2B.
c.
UN SWITCHED NORMALLY-ON LOAD
- Connect the AC Line input wire of the fixtures to the appropriate position of the LOAD
terminal block (120V OR 277V). Connect the fixture Neutral to the Neutral position of the LOAD terminal block.
Refer to Figure 2C.
d.
SWITCHED NORMALLY-ON LOAD
(fixtures may be turned on and off locally, but will come on during power failure regardless of
switch position) - Follow Step 3B above. Connect the Line side of the switch to the (UN-SWT) position of the INPUT POWER ter-
minal block, respecting the operating voltage (120V OR 277V). Connect the load side of the switch to the (SWT) position on the
INPUT POWER terminal block, respecting the operating voltage (120V OR 277V). Refer to Figure 2A.
e. Connect the Fixture Supply Ground to the Mini Inverter Ground.
a. Position the battery(s) in the unit.
b. Refer to figure 1. Connect the RED wire to the positive (+) post of the battery. Connect the BLUE wire to the negative (-) post of
the battery. Tighten all bolts to a recommended torque of
78 lbf-in ± 4 lbf-in
. Put the protective red cover completely over the pos-
itive battery post (125W T-BAR unit only).
NOTE: THE EMERGENCY LIGHT AND INDICATORS WILL NOT TURN ON AT THIS TIME.
STEP 1A: MOUNTING THE MINI INVERTER TO THE WALL
STEP 1B: RECESSED T-BAR CEILING MOUNT
(LMIU-125W ONLY)
STEP 2: CONNECT THE NORMAL AC INPUT (SEE FIGURE 2A, 2B, 2C OR 2D)
STEP 3: CONNECT THE REMOTE EMERGENCY FIXTURES (SEE FIGURE 2A, 2B, 2C OR 2D)
STEP 4: CONNECT THE BATTERY(S)
STEP 5: SWITCH ON THE INVERTER MODULE (SWITCH IS LOCATED ON THE RIGHT SIDE OF
THE INVERTER MODULE).
