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ISL-540
TBTS SERIES D
EMERGENCY
P.O. BOX 11846 TUCSON, AZ 85734
(520) 294-3292 • FAX (520) 741-2837
www.iotaengineering.com
INSTRUCTION MANUAL
IMPORTANT SAFEGUARDS
When using electrical equipment, basic safety precautions should always be followed, including the following:
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
1. CAUTION – To prevent electrical shock, do not mate unit connector until installation is complete and A.C.
power is supplied to the unit.
2. CAUTION – This fixture provides more than one power supply output source. To reduce the risk of electrical
shock, disconnect both normal and emergency sources by turning off the A.C. branch circuit and by disconnecting the unit connector.
3. CAUTION – This is a sealed unit. The integral, high temperature Ni-Cad battery is not replaceable. Replace
the entire unit when necessary and recycle or dispose of the nickel-cadmium battery properly.
4. DO NOT USE OUTDOORS. The ISL-540 is for use with grounded, UL Listed, damp location rated, indoor
fixtures. Not for use in heated air outlets or hazardous locations.
5. The ISL-540 requires an unswitched A.C. power source of either 120 or 277 volts. Properly cap the unused
A.C. lead.
6. Do not mount near gas or electric heaters.
7. The ISL-540 and A.C. ballast must be on the same branch circuit.
8. The ISL-540 should be mounted in locations and at heights where it will not readily be subjected to tampering
by unauthorized personnel.
9. The ISL-540 will cold strike and operate for 90 minutes one 2′ to 4′ T5, one 27W-46W T6, or one 17W-40W T8
linear lamp, including HO and 4-pin long compact fluorescent lamps, from 36 through 55 watts.
10. The ISL-540 is compatible with all A.C. magnetic and electronic ballasts including multiple lamp ballasts with
one lamp operating in the emergency mode.
11. Suitable for use in damp locations.
12. For use in 0° C minimum, 50° C maximum ambient temperatures.
13. The use of accessory equipment not recommended by the manufacturer may cause an unsafe condition.
14. Do not use this equipment for other than intended use.
LIGHTING EQUIPMENT
15. Install in accordance with the National Electrical Code and local regulations.
16. Installation and servicing should be performed by qualified personnel.
17. Lighting fixture manufacturers, electricians, and end-users need to ensure product system compatibility before
final installation.
SAVE THESE INSTRUCTIONS
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7/8" BUSHING
FIXTURE
BALLAST CHANNEL COVER
PLASTIC TUBE
TBTS
FIXTURE LENS
INSTALLATION INSTRUCTIONS
+ RED
LEAD
WHITE
LEAD
FIXTURE
TBTS
CAUTION: Before installing, make certain the A.C. power is off and the
ISL-540 unit connector is disconnected.
1. MOUNTING THE ISL-540
Remove the ballast channel cover. Mount the ISL-540 in the ballast channel at least 1/2″ away from the A.C.
ballast(s).
When battery packs are remote mounted, consult Customer Service for the maximum allowable distance between
the battery pack and the lamp.
2. WIRING
Refer to the wiring diagrams on the back page for the appropriate wiring of lamp(s) and ballast. Install in accordance
with the National Electrical Code and local regulations. For additional wiring diagrams consult Customer Service.
3. INSTALLING THE THREADED BODY TEST SWITCH (TBTS)
Recessed Troffer Fixture – Select a convenient location with proper clearance in the ballast cover and drill or
punch a 7/8″ hole (1/2″ knockout). Insert the 7/8″ bushing into the hole. Push the plastic tube through the bushing.
Route the leads of the TBTS through the plastic tube. Connect the LED wires from the unit to the TBTS (Red/
Black or Red w/tag to Red, White/Red to White). Push the entire assembly back into the tube until the lens collar
rests against the plastic tube. The plastic tube should be adjusted so that the TBTS is within ¼″ of the fixture lens.
The TBTS must be visible after installation. Refer to Illustration 1.
Linear Fixture – Select a convenient location on the fixture so the TBTS can be seen after installation. Allow for
proper clearance inside the fixture and drill or punch a 1/2″ hole. Remove the nut from the TBTS. Push the TBTS
housing into the 1/2″ hole and secure with the nut. Connect the LED wires from the unit to the TBTS (Red/Black or
Red w/tag to Red, White/Red to White). Refer to Illustration 2.
Illustration 1 Recessed Troffer Fixture Illustration 2 Linear Fixture
ISL-540
ISL-540
OBSERVE PROPER POLARITY
4. WIRING THE A.C. INPUT
A. The ISL-540 and A.C. ballast must be on the same branch circuit.
B. The ISL-540 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-540 is used with a switched fixture, the A.C. input to the ISL-540 must be connected ahead of
the fixture switch. Refer to Illustration 3 for switched and unswitched fixture wiring diagrams.
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