IOTA IIS 550 I User manual

IMPORTANT SAFEGUARDS
When using electrical equipment, basic safety precautions should always be followed, including the following:
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
1. DO NOT USE OUTDOORS.
2. Do not mount near gas or electric heaters.
3. Do not use this equipment for other than its intended use.
4. The IIS 550 I should be mounted securely and in locations and at heights where it will not readily be sub-
jected to tampering by unauthorized personnel.
5. The use of accessory equipment and replacement parts not recommended by IOTA Engineering, LLC may
cause an unsafe condition, will void the warranty and result in non-compliance with UL specifications.
6. The AC voltage rating of this equipment is specified on the product label. Do not connect the IIS 550 I equip-
ment to any other voltage.
7. Not for use with HID lighting.
8. Use only the battery part number specified for use with the IIS 550 I. Failure to do so may cause an unsafe
condition, will void warranty, and result in non-compliance with UL specifications.
9. The IIS 550 I uses a sealed valve regulated lead acid battery. Batteries can be punctured if not handled
properly, therefore use caution when servicing batteries. In the event battery acid comes in contact with
eyes or skin, flush with fresh water and consult a physician immediately.
10. Install in accordance with the National Electrical Code and local regulations.
11. Installation and servicing should be performed by qualified personnel.
12. Electricians and end-users need to ensure product system compatibility before final installation.
SAVE THESE INSTRUCTIONS
IIS 550 I
550W UNIT INVERTER EQUIPMENT
THIS UNIT CONTAINS A
RECHARGEABLE VALVE-REGULATED
LEAD ACID BATTERY. PLEASE
RECYCLE OR DISPOSE OF
PROPERLY.
INSTRUCTION MANUAL
[phone] • FAX [phone]
www.iotaengineering.com

Page 2
Wiring
INSTALLATION INSTRUCTIONS
CAUTION: Before installing, make certain the A.C. power is off.
NOTE: The battery is shipped in separate packaging for ease of handling. Store the battery in a cool, dry and safe
location until ready for installation. The battery may be kept in storage for up to 3 months without recharging.
CAUTION: This is a dual input and output voltage unit. It can be connected to either a 120 or 277 volt supply.
The input and output voltages must match.
Mounting the IIS 550 I
1) Remove the front cover of the IIS 550 I by removing the two (2) screws located at the top of cover.
2) Knock out the keyhole slots at the rear of the unit and use for mounting the IIS 550 I securely to the wall. There is an additional
round hole for a #10 screw in the cabinet. Code requires that an additional screw be used through this hole to prevent the unit
from being inadvertently lifted up off the keyhole slots. Do not drill any holes in this unit.
3) Extend an unswitched AC supply, normally-on lamp supply (if used), and the load wires to the unit. 1/2″conduit knockouts
are provided in the back and sides of the unit for wires to pass through. NOTE: Input and output wires must be run in separate
conduits. CAUTION: Do not drill holes into the cabinet; drill filings may damage the unit and keep it from operating.
CAUTION: The IIS 550 I must be mounted securely. Do not rely on the junction box for supporting the weight of the
unit. Mount the IIS 550 I securely to the wall using the keyhole slots provided.
ALWAYS CONSULT LOCAL CODES FOR STRUCTURAL REQUIREMENTS WHEN MOUNTING THE UNIT.
FIGURE 1 - IIS 550 I WIRING CONNECTIONS
IIS_375_550_normally-on.EPS
INVERTER - ALWAYS ON FIXTURE
WHITE
BLK (120V)
ORG (277V)
COMMON
120 / 277 V
WHITE
GREEN
GROUND
GRAY
YEL/VIO
NEUTRAL
120/277V
CIRCUIT MUST BE
ISOLATED FROM
NORMAL CIRCUITS.
BLK (120V)
ORG (277V)
1
NORMAL AC
INPUT
(UNSWITCHED)
OUTPUT
BATTERY CHARGER
INPUT (UNSWITCHED)
CIRCUIT
BREAKER
VIOLET (120V)
YELLOW (277V)
4
IIS INVERTER
2
3
IIS_375_550_normally-on.EPS
INVERTER - SWITCHED FIXTURE
1
NORMAL AC
INPUT (SWITCHED)
OUTPUT
BATTERY CHARGER
INPUT (UNSWITCHED)
CIRCUIT
BREAKER
VIOLET (120V)
YELLOW (277V)
WHITE
BLK (120V)
ORG (277V)
COMMON
120 / 277 V
WHITE
GREEN
GROUND
GRAY
YEL/VIO
NEUTRAL
120/277V
CIRCUIT MUST BE
ISOLATED FROM
NORMAL CIRCUITS.
BLK (120V)
ORG (277V)
WALL SWITCH
4
IIS INVERTER
2
3
ALTERNATE
AC INPUT
(IF PRESENT)
IIS_375_550_normally-on.EPS
INVERTER - NORMALLY OFF FIXTURE (EMERGENCY MODE ONLY)
1
NORMAL AC
INPUT
OUTPUT
BATTERY CHARGER
INPUT (UNSWITCHED)
CIRCUIT
BREAKER
VIOLET (120V)
YELLOW (277V)
CIRCUIT MUST BE
ISOLATED FROM
NORMAL CIRCUITS.
4
IIS INVERTER
2
3
WHITE
BLK (120V)
ORG (277V)
COMMON
120 / 277 V
WHITE
GREEN
GROUND
GRAY
YEL/VIO
NEUTRAL
120/277V
BLK (120V)
ORG (277V)
CAP UNUSED
LEADS
- ALWAYS ON FIXTURES
Fixtures are used for both normal and
emergency power conditions. During
a loss of normal AC power, the IIS
automatically senses the drop in line
voltage, and powers the fixtures with its
internal battery.
- SWITCHED FIXTURES
Fixtures are used for both normal and
emergency power conditions, and are
controlled by a local switching device.
During a loss of normal AC power, the
IIS automatically senses the drop in line
voltage, and powers the fixtures with
its internal battery, regardless of the
position of the switching device.
- NORMALLY OFF FIXTURES
Fixtures on the emergency circuit are
used in emergency mode only, and
are not energized during normal power
conditions (Note: Normal AC Input leads
are not connected).

Page 3
1. CONNECTING THE BATTERY CHARGER INPUT (FIGURE 1)
Battery Charger Input leads serve as your normal power sense and charging input for the battery. They require unswitched AC
input of 120 or 277 VAC. If a local switch is present on the designated emergency circuit, the battery charger input leads must
be wired ahead of the switch.
A. For 120V supply, connect the AC line wire to the BLACK Battery Charger Input lead. For 277V supply, connect the AC
line wire to the ORANGE Battery Charger Input lead. CAUTION: Cap the unused BLACK or ORANGE input wire. Failure
to do so may result in equipment failure and void the warranty.
B. Connect the Neutral wire to the WHITE Battery Charger Input lead.
C. Connect the ground wire in accordance with local and national codes. A GREEN wire is provided for this purpose.
2. CONNECTING THE NORMAL AC INPUT (FIGURE 1)
Normal AC Input leads allow for your fixture(s) to operate in normal power situations while maintaining emergency
capabilities. Before connecting the Normal AC Input leads, see Figure 1 to determine which normal power situation best
fits your application. In all applications:
A. For 120V supply, connect AC line input to the BLACK Normal AC Input lead. For 277V supply, connect the AC line
input to the ORANGE Normal AC Input lead. Cap the unused lead.
B. Connect the AC line Neutral to the WHITE Normal AC Input lead.
3. CONNECTING EMERGENCY FIXTURES (FIGURE 1)
A. Connect emergency fixtures to the output leads YELLOW/VIOLET for 120/277V and GRAY for NEUTRAL. 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
IIS 550 I. When making connections to the IIS 550 I, DO NOT connect the Input Neutral (WHITE) to the Output
Neutral (GRAY).
B Connect the Fixture Supply Ground to the IIS 550 I Ground.
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.
COMPONENT HOUSING / CIRCUITRY
(CAUTION: DO NOT OPEN)
BATTERY
4
INTERNAL CIRCUIT BREAKER
(SELECT PROPER VOLTAGE LEAD)
VIOLET - 120 VAC, YELLOW - 277 VAC
5
BATTERY CONNECTION
TEST SWITCH
LED INDICATORS
GROUND WIRE
INPUT, OUTPUT, AND
BATTERY CHARGER LEADS
FIGURE 2 -
IIS 550 I SIDE
4. CONNECTING THE INTERNAL CIRCUIT BREAKER (FIGURE 2)
A. Select the proper voltage lead (VIOLET for 120VAC or YELLOW for 277VAC) and connect it to the circuit breaker.
Cap the unused lead. Push the circuit breaker switch to the ‘closed’ position so that the indicator on the circuit breaker
shows RED.
CAUTION: Before proceeding to Wiring Step 5, make sure that all unused wires are properly capped.
Failure to do so may result in an unsafe condition and equipment failure.
5. INSTALLING THE BATTERY (FIGURE 2)
ATTENTION: Use only battery part number IIS 550 I BAT 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.
Battery Torque Ratings: initial torque is 65 in/lbs, annual is 52 in/lbs.
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.

Page 4
Rev. 2031
68550-020
6. 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.
B. Operate the Test Switch for approximately 10 seconds. Observe that any emergency fixtures do not go out, that
the Inverter On (Green) Indicator comes on, and that any normally off fixtures come on.
C. Release the Test Switch. Normally Off fixtures and the Inverter On (Green) Indicator will extinguish. Normally
On, emergency, and any switched fixtures will return to their normal operating mode.
D. Reinstall the front cover using all the original hardware.
E. Affix red “EMERGENCY CIRCUIT” label (provided) to the panelboard dead front cover near the circuit breaker feeding
the IIS 550 I.
Operation
Normal Mode - AC power is present and operates the fixtures as intended. The IIS 550 I is in the standby charging mode.
The Ready (Yellow) Indicator will be lit providing a visual indication that the unit is in Standby Mode.
Emergency Mode - The AC power fails. The IIS 550 I senses the AC power failure and automatically switches to the Emer-
gency Mode. All fixtures, including Normally Off or switched off fixtures, connected to the IIS 550 I will be illuminated for a
minimum of 90 minutes. When the AC power is restored, the IIS 550 I switches the system back to the Normal Mode and
resumes battery charging. See page 1 of the instruction manual for important operational safeguards and requirements.
Resetting the Circuit Breaker - Should the unit experience an overload situation or a short circuit the breaker will trip. Be-
fore resetting the breaker insure that all wiring is correct, the load side of the inverter must be isolated from all other power
sources. Verify that the load does not exceed the rated capacity of the inverter.
Testing
1) To test the equipment, depress the test switch. The Ready (Yellow) Indicator will go off. The designated fixtures will
either illuminate if they were off or will stay on if they were normally illuminated. The Inverter On (Green) Indicator
will come on.
2)
Release the Test Switch. The Ready (Yellow) Indicator will come on. Normally Off emergency fixtures will extinguish.
The equipment is supplied with an automatic solid state charger designed to fully recharge the battery within 72 hours after
AC power is restored, and then maintain the battery in a fully charged state. Allow the battery to charge for a minimum
of 72 hours after installation or power failure before conducting a 90 minute discharge test. The Life Safety Code and the
Authorities Having Jurisdiction require that this test be performed on an annual basis.
Maintenance
1. CAUTION: Always follow proper shutdown procedure before servicing (see shutdown procedure below).
Only qualified service technicians should service this equipment. The use of parts supplied by other than IOTA Engi-
neering, LLC may result in an unsafe condition, equipment failure, and will void the warranty, and result in non-compli-
ance with UL specifications.
2. BATTERY - IOTA recommends that the battery terminations be re-torqued on an annual basis. Re-torque specifications
are 52 in/lbs. The battery supplied in this equipment is a high quality maintenance-free Valve Regulated Lead Acid
design. It requires no maintenance and when installed in an ambient temperature of 20° to 30° C (68° to 86° F) its
life expectancy is 8 to 10 years. However, as stated above, the equipment must be tested for 90 minutes a minimum
of once per year. When the battery will no longer operate the load for 90 minutes it must be replaced. Use only IOTA
Engineering, LLC supplied parts. Dispose or recycle the lead-acid battery properly.
Shutdown Procedure
If a shutdown of the IIS unit becomes necessary for routine maintenance or other purposes, always follow proper
shutdown procedure:
1) De-energize the AC supply by locking off the circuit breaker feeding the unit.
2) Disconnect the battery by uncoupling the battery connector between the battery and converter.
When restoring power to the IIS unit, refer to instructions beginning on Page 3, Step 3 for start-up procedures.
CONTACT CUSTOMER SERVICE FOR REPLACEMENT PARTS.
“Written records of testing shall be kept by the owner for inspection by the authority having jurisdiction.”
SERVICING SHOULD BE PERFORMED BY QUALIFIED PERSONNEL.
Consult Customer Service or visit www.iotaengineering.com for current warranty information.