Emergency Bypass Relay (EM20)
When using electrical equipment, basic safety precautions should
always be followed, including those listed below:
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
1. CAUTION – The Fixture and Emergency Bypass Relay (EM20) is powered by more than one
power source. To reduce the risk of electrical shock, disconnect both normal and emergency
sources by turning off the A.C. branch circuit breaker.
2. Caution – Installation and servicing should be preformed by a qualified person only. De-
energizing all circuits before servicing.
3. Do Not Use Outdoors. The EM20 is for use with grounded, UL Listed, indoor fixtures. Not for use
in wet or hazardous locations. Install to a ½" Ko in a standard j-box or enclosure, suitable for
plenum mounting.
4. Do not mount near gas or electric heaters.
5. Refer to product cut sheet for additional operating environment specifications.
6. The EM20 requires an unswitched A.C. normal power source of 120 to 277 volts A.C. 50/60Hz,
an unstitched Emergency A.C. power source to be controlled by the EM20 for the Emergency
lighting, and a switched A.C normal power source from the controlled lighting in the space.
7. When used with 0-10V dimming drivers the Normal A.C. power for the lighting controller, the
switched power for the lighting relay and the normal unswitched source must be on the same
branch circuit.
8. The EM20 should be mounted in a location and at heights where it will not readily be subject to
tampering by un-authorized personnel, But still accessible to an electrician for testing and
maintenance.
9. Do not use this equipment for other than its intended use.
10. The use of accessory equipment not recommended by the manufacturer may cause an unsafe
condition, void warranty, and result in non-compliance with UL specifications.
11. Install in accordance with National Electrical Code and local regulations.
12. Test all connections and verify operation.
Installation Instructions
IMPORTANT SAFEGUARDS
SAVE THESE INSTRUCTIONS
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