Chapter 3: Operating instructions
EST3X Technical Reference Manual 65
• Normal: Activates an alarm event when the smoke level reaches
approximately 2.5 %/ft obscuration (1.2 %/ft for ionization detectors)
• Less: Activates an alarm event when the smoke level reaches approximately
3.0 %/ft obscuration (1.4 %/ft for ionization detectors)
• Least: Activates an alarm event when the smoke level reaches approximately
3.5 %/ft obscuration (1.6 %/ft for ionization detectors, 2.46 %/ft for a SIGA-SD
Duct Smoke Detector)
Switching the sensitivity threshold
To activate the alternate alarm sensitivity settings:
1. Access the Main Menu, and then click Activate.
2. Click Alt Sensitivity.
3. Enter the access level password.
To restore the primary alarm sensitivity settings:
1. Access the Main Menu, and then click Restore.
2. Click Primary Sensitivity.
3. Enter the access level password.
Changing event message routing
Event messages are configured with two message routes: primary and alternate.
The message route setting determines where event messages are displayed.
Typically, the primary message route is used for a daytime operation and the
alternate message route is used for a nighttime or weekend operation.
In most applications, a time control is used to automatically switch between event
message routes. However, you can manually switch event message routes using
the command menus.
Changing the event message routing
To activate alternate message routing:
1. Access the Main Menu, and then click Activate.
2. Click Alt Message Route.
3. Enter the access level password.
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