Technical Bulletin
6
SuperDuct Signature Duct Smoke Detector
Wiring
Figure 8 shows how to wire the duct smoke detector and its
accessories. Run all field wiring into the detector through the
knockouts located at the top of the detector housing.
Configuration
The duct smoke detector is configured at the factory for the
lowest sensitivity setting and to generate an alarm event when
activated. Depending on the version of the configuration
software that you use, you can configure the duct smoke
detector to generate an alarm event or a supervisory event
when it is activated.
Maintenance and service
Recommended service schedule
Perform a visual inspection upon installation and once every
six months thereafter.
Perform an alarm test upon installation and once every twelve
months thereafter.
Testing the duct smoke detector
Before testing the duct smoke detector, notify the proper
authorities that the system is undergoing maintenance and,
unless part of the test, disconnect all auxiliary equipment from
its common alarm relay contacts.
Note:
You can’t initiate an alarm test if the duct smoke
detector is in the trouble state.
To test the duct smoke detector’s ability to report an alarm
condition:
•
Using an SD-MAG, hold the SD-MAG where indicated
on the side of the duct smoke detector for more than 5
seconds
•
Using an SD-TRK, turn the key switch to the TEST
position for more than 5 seconds
•
Using an SD-TRM, hold the SD-MAG test magnet to the
target area for more than 5 seconds
Once activated, verify the following:
•
The detector’s Alarm LED is flashing
•
If connected and configured, the Active LED on the
remote test station or LED indicator is flashing
•
The appropriate event message or visual indication is
reported on the fire alarm control panel
After you have finished testing the duct smoke detector, reset
the control panel in order to restore the detector to its normal
state.
Troubleshooting
The Power LED does not blink
Check the wiring. Repair or replace any loose or missing
wiring.
An internal trouble event message is displayed on the
control panel
Check the cover. Make sure it is attached and secured properly
then reset the control panel.
Check the detector’s dirty level. Clean if required. See,
“Cleaning the duct smoke detector.”
Upload the detector’s trouble table to determine the problem.
Correct the problem then reset the control panel.
Note:
Clearing the trouble message from the panel does not
remove the trouble from the loop controller’s trouble table.
Cleaning the duct smoke detector
Clean the duct smoke detector when it becomes 80% to 99%
dirty or sooner if conditions warrant.
Caution:
Before cleaning the duct smoke detector, notify the
proper authorities that the fire alarm system is undergoing
maintenance and take steps to prevent the control panel from
responding to a false alarm.
Airflow
HVAC duct
Sampling
tube
Retainer
clip
Optic
plate
Optic
housing
Detector
housing
Figure 6: Detector cleaning diagram
