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2) Temporarily disconnect and cap the wire connected to the Normal Switch Sense lead on the ETS20
DR. This will disable the normal control function and allow testing of the “fail-to-ON” function.
3) Turn on the circuit breaker in the normal panel of the designated circuit. The Normal Power (Green)
will be lit indicating that normal power is present and that emergency lighting is not required. Emergency
lighting should be o. Conrm automatic Emergency On operation by turning o the normal circuit break-
er. The emergency lighting should immediately turn on.
4) With the normal circuit breaker o, reconnect the wire to the Switch In lead. Turn on the normal circuit
breaker. The control device now controls both the normal and emergency lighting together.
Ready to Test Indicator
After installation of the remote switch or device (Section 3), the remote device should be in normal mode
(contacts closed) and the Ready to Test (Yellow) indicator on the ETS20 DR will be lit. When the remote
device is activated, or the remote test switch is pushed, the ETS20 DR bypasses the control device set-
tings, allowing operation of the emergency load. To conrm that the ETS20 DR is operating properly, set
the wall switch or control device in the ‘OFF’ position. Designated emergency xtures should come on
when pressing the Test Button. Note: for testing, the ETS20 DR will only bypass the control devices
and operate the emergency xtures from the normal supply; it does not activate nor conrm readi-
ness of the auxiliary supply itself. The Ready to Test (Yellow) indicator will extinguish and the Emer-
gency Power (Red) indicator will remain lit.
If the Ready to Test Indicator is extinguished, it is an indication that Normal Power is lost or the unit is be-
ing forced into Emergency Power mode by the remote device or test switch. See Table A.
5. Labeling
Ax a self-adhesive caution label in a visible location on the enclosure and on each xture controlled by
the ETS20 DR noting that the load is supplied from both normal and emergency power sources. Both
power sources must be disconnected before servicing the xture(s).
OPERATION
Normal Mode –A.C. power is present. Fixtures are operating normally and all indicators on the ETS20 DR will
be lit: Normal Power (Green), Emergency Power (Red), and Ready to Test (Yellow). See Table A.
Emergency Mode – The A.C. power fails. The ETS20 DR senses the A.C. power failure and automatically
activates the emergency load. All designated xtures are illuminated at full light output for as long as auxiliary
power is available regardless of the normal wall switch position. The Emergency Power Indicator (Red) on the
ETS20 DR is lit and the Normal Power (Green) and Ready to Test (Yellow) indicators are o. When the A.C.
power is restored, the ETS20 DR switches the system back to the Normal Mode. See page 1 of the Instruction
Manual.
TESTING & MAINTENANCE
The ETS20 DR is a maintenance free unit, however, periodic inspection and testing is required. Refer to the
NFPA 101, Life Safety Code and local codes for required emergency testing schedules.
Testing should be conducted following maintenance or re-working of any of the xtures connected to the
emergency circuit.
“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.
READY TO TEST
(YELLOW)
NORMAL POWER
(GREEN)
EMERGENCY POWER
(RED)
ON
ON
ON
STATUS
DESCRIPTION
--
--
ON
All OK
Normal
Power
not present
Emergency
Power
not present
--
ON
ON --
--
--
Normal and
Emergency Power
not present
Test Button is pressed or
Fire Alarm/Remote Device
is open
ON
ON
--
TABLE A: ETS20 DR INDICATOR DESCRIPTIONS
