IOTA IIS-550-I - Manual (Page 3)

Page 3
FIGURE 1 - IIS-550-I WIRING CONNECTIONS
D. FIXTURES ON LOCAL SWITCH (fixtures may be turned on and off locally, but will come on during power
failure regardless of switch position) - Follow Step 2B above. Connect the line side of the Switch to the
unswitched AC input wires. Connect the load side of the Switch to the proper voltage flying lead from the heat-
sink assembly (BLACK for 120V, ORANGE for 277V). Refer to
Figure 1.
CAUTION: If connected to 277 volt input, use a 277V rated switch. Failure to use the proper voltage
switch may result in switch failure, a shock hazard, an unsafe condition and equipment failure.
E. ALTERNATE FEED (all fixtures are supplied on normal from an alternate circuit) - Follow Step 2B above. Then
extend alternate AC input to the proper voltage flying leads from the heatsink assembly (BLACK for 120V, ORANGE
for 277V). If a local Switch is present, connect the alternate AC input to the Switch, then connect the proper voltage
flying leads from the heatsink assembly to the load side of the Switch as in Step 2D. Refer to
Figure 1.
F. Connect the Fixture Supply Ground to the IIS-550-I Ground.
G. If the IIS-550-I includes an internal circuit breaker, push the circuit breaker switch to the ‘closed’ position so
that the indicator on the circuit breaker shows RED. The circuit breaker is located near and slightly above the
transformer. If no circuit breaker is present on your inverter model, then disregard.
Consult the IIS-550-I Application Notes for connecting the unit to specific lighting loads. Application Notes are
available on the internet or through Customer Service.
CAUTION: Before proceeding to Wiring Step 3, make sure that all unused wires are properly capped. Fail-
ure to do so may result in an unsafe condition and equipment failure.
DO NOT ENERGIZE THE CIRCUIT AT THIS TIME.
3. INSTALLING THE BATTERY
Use only battery part number F745500000 with the unit. See Page 1 of this instruction manual.
A. Before installing the battery, check the torque on the hardware that connects the polarized connector to the
terminals as these connections may have loosened in transit and storage. The proper torques should be
70 in/lbs for a
Screw Stud terminal, and 65 in/lbs for an L Flag terminal.
B. Install the battery into the IIS-550-I with the terminal posts facing toward the front of the unit. NOTE: The
IIS-550-I battery is heavy. To avoid injury, exercise caution when handling the battery.
C. Plug the battery connector together.
Note: Neither the indicator lights nor the emergency fixtures will illuminate at this time. Also, please note that
there are 2 battery tie down lugs in the event that it is required that the battery be held in place. Please contact
IOTA Engineering Customer Service to purchase this accessory if needed.
For Screw Stud batteries, initial torque is 70 in/lbs, annual is 65 in/lbs.
For L-Flag batteries, initial torque is 65 in/lbs, annual is 52 in/lbs.
NOTE: The emergency indicator lights will not illuminate at this time.
4. COMPLETING INSTALLATION
A. Energize the AC supply. The Ready (Yellow) Indicator and the Charging (Red) Indicator will illuminate.
The Inverter On (Green) Indicator will not illuminate at this time.
IIS_125_375_UPDATE.EPS
INVERTER - INTERRUPTIBLE
120V
277V
LOCAL SWITCH
(IF PRESENT)
ALTERNATE
AC INPUT
INVERTER
WHT (NEUTRAL)
ORG (277V)
BLK (120V)
FLYING LEADS
GROUND
WIRE
AC INPUT - SELECT PROPER VOLTAGE
LEAD AND CAP UNUSED LEAD.
GROUND WIRE - CONNECT FIXTURE SUPPLY
GROUND AND UNIT GROUND IN ACCORDANCE
WITH LOCAL AND NATIONAL CODES.
IF USING A SECONDARY AC INPUT, SELECT
PROPER VOLTAGE LEAD AND CAP UNUSED
LEAD.
USE A 277V RATED SWITCH IF CONNECTING
TO 277V INPUT.
FLYING LEADS - SELECT PROPER VOLTAGE
LEAD AND CAP UNUSED LEAD.
YELLOW (277V)
VIOLET (120V)
GRAY (NEUTRAL)
GREEN
NORMAL CIRCUIT
EMERGENCY CIRCUIT
NORMAL
LIGHTING LOAD
DESIGNATED
EMERGENCY LOAD
INPUT LEADS
ORG (277V) BLK (120V) WHT (NEU)
OUTPUT LEADS
BRANCH
CIRCUIT
OPERATES IN BOTH NORMAL AND
EMERGENCY MODES. CIRCUIT MUST BE
ISOLATED FROM NORMAL CIRCUITS.