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.