Selecting Pre-Alarm Application Levels. Notifier AFP-200

Pre-Alarm (AWACS™) Applications

Pre-Alarm Programming

99=Prealm. Figure 153 shows a sample panel display of the Pre-Alarm screen with default Alert and Action Pre-Alarm levels:

Alert=70% of Alarm

means that every photo and ion detector will give an Alert indication when its sensitivity reaches 70% of its alarm level (default setting).

Status banner for

Pre-Alarm Zone 99

PRE-ALARM@ZONE@99

ALERT=70%@OF@ALARM

ACTION=00%@OF@ALARM

Action=00% of Alarm

– no

Pre-Alarm Action level selected in the system (default setting)

Figure 153 Sample Display of Pre-Alarm Screen with Default Values

When programming Pre-Alarm settings, note the following:

• The Alert default is 70%.

• The default value for Action is 00%. ACTION=00% means no Pre-Alarm, therefore the default is no Action level.

• Allowable settings for Alert and Action are 00% to 99%.

• The control panel software ensures that the Action level is higher than the Alert level (or the Action level is zero) and that both are below 100%.

G.3.2 Selecting Pre-Alarm Application Levels

Alert and Action Pre-Alarm levels are global settings, meaning they apply to all photoelectric or ionization detectors. You can, however, select different Action levels as detailed below. Figure 154 shows typical AWACS™ application threshold levels:

SMOKE OBSCURATION

% per foot

3%

ALERT

Warning at panel of possible fire

ACTION

Shut off power to equipment monitored by this detector

ALARM

Evacuate building and call fire department

2%

1%

164

TIME

Figure 154 Typical AWACS™ Application Threshold Levels

Selecting Different Action Levels

You can select different Pre-Alarm Action levels for each detector by selecting different alarm levels. For example, two detectors, D13 and D14, are connected to a control panel with a global Alert level set to 50% of alarm. Select different Pre-Alarm levels as follows:

• Detector D13 – Set to alarm at 2.00%, D13 so it will Pre-Alarm at 1.00% per foot

(30.48 cm) obscuration.

• Detector D14 – Set to alarm at 1.00%, so it will Pre-Alarm at 0.50% per foot

(30.48 cm) obscuration.

AFP-200 PN 15511:H2 10/14/2002

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