Operation, Testing & maintenance, Wiring the a.c. input – IOTA ISL-28 User Manual

Page 3: Ballast wiring block diagram 7. labels, Completing installation

Page 3

5. WIRING THE A.C. INPUT

A. The

ISL-28 and A.C. ballast must be on the same branch circuit.

B. The

ISL-28 requires an unswitched A.C. power source of either 120 or 277 volts. Select the proper voltage

lead and cap the unused lead.

C. When the

ISL-28 is used with a switched fixture, the A.C. input to the ISL-28 must be connected ahead of the

fixture switch. Refer to Illustration 3 for switched and unswitched fixture wiring diagrams.

6. BALLAST WIRING BLOCK DIAGRAM

7. LABELS

Attach the appropriate labels adjacent to the

TBTS. Annotate Re-lamping label for lamp type and wattage. The

Caution and the Re-lamping labels must be on the fixture in a readily visible location to anyone attempting to ser-

vice the fixture.

8. COMPLETING INSTALLATION

When the installation is complete, switch the A.C. power on and join the

ISL-28 unit connector.

OPERATION

Normal Mode – A.C. power is present. The A.C. ballast operates the fluorescent lamp(s) as intended. The ISL-28 is
in the standby charging mode. The

TBTS will be lit providing a visual indication that the battery is being charged.

Emergency Mode – The A.C. power fails. The ISL-28 senses the A.C. power failure and automatically switches to the

Emergency Mode. One lamp is illuminated, at reduced output, for a minimum of 90 minutes. When the A.C. power is

restored, the

ISL-28 switches the system back to the Normal Mode and resumes battery charging. See page 1 of the

Instruction Manual.

TESTING & MAINTENANCE

Pressing the red lens on the

TBTS turns off the light on the TBTS and forces the unit into emergency mode, inter-

rupting power to the designated A.C. ballast. The emergency lamp is now being lit by the

ISL-28 unit. After releasing

the

TBTS, the fixture returns to normal operation after a momentary delay. To simulate a “BLACK OUT” use the circuit

breaker to turn off A.C. power.
Initial Testing – Allow the unit to charge approximately 1 hour, then press the TBTS to conduct a short discharge test.
Allow a 24 hour charge before conducting a one hour test.
The

ISL-28 is a maintenance free unit, however, periodic inspection and testing is required. NFPA 101, Life Safety

Code, outlines the following schedule:
Monthly – Insure that the TBTS is illuminated. Conduct a 30 second discharge test by depressing the TBTS. One lamp
should operate at reduced output.
Annually – Insure that the TBTS is illuminated. Conduct a full 1

hour discharge test. The unit should operate as

intended for the duration of the test.

“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.

BLACK

A.C. BALLAST

HOT A.C. LINE

WHT

WHITE

(120V) BLK

(277V) ORG

COMMON

Select proper voltage lead. Cap unused lead.

WHT/BLK

WHT/RED

WHT

(+) RED/BLK

RED W/TAG

(+) RED

TBTS