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Overview,
Continued
The function of the NAC is to warn building occupants of alarm conditions detected by the
system. Occupants must be familiar with the established procedure to follow upon detection of an
alarm. For systems intended for Halon 1301 (NFPA 12A), Halon 1211 (NFPA 12B), or clean
agent (NFPA 2001) release, a pre-discharge NAC must be configured to warn building occupants
of the impending discharge. The setting of the release timer selects the duration of the pre-
discharge signal. Compliance with ADA requires audible and visible notification.
Cross Zoned System.
The first alarm sounds a temporal code (.5 second ON, .5 second
OFF, .5 second ON, .5 second OFF, .5 second ON, 1.5 seconds OFF, and then repeat pattern)
on the audible NACs. The second alarm causes the cadence to increase to 120 beats per
minute for the duration of the Automatic Release Delay Timer. When release occurs, the
audible appliances sound a steady tone.
Single Alarm System.
The first alarm sounds a temporal code on the audible NACs for
the duration of the Automatic Release Delay Timer. When the timer expires and the RACs
activate, the NACs switch to a steady tone.
This option allows the
first alarm signal
to be changed from temporal (default) to a slower 20
BPM signal, if necessary.
Method
Description
Text-Based
Programming
The eighth prompt, shown below, asks you to set the Stage 1 Alarm Coding.
[08] STAGE 1 ALARM NAC2 CODING:
d 1 = Temporal
*2 = 20 BPM
(d=default, *=current setting)
Select Number(X=exit): 1
Enter the number corresponding to the value you want to select and press the carriage return.
Refer to “Programming NAC Operation” for a description of the next programming step.
Front Panel
Programming
Use the Reset key to scroll through the selections. When the desired choice is illuminated, press
the ACK key to save the selection in memory and move to the next step.
Programming Stage 1 Alarm NAC2 Coding
Overview
These LEDs represent
the available options.
Use the RESET key to
move through the
choices.
Press ACK when the
illuminated LED
corresponds to the
desired choice.
When seventh LED from top
on left side of the display is
lit, it indicates the NAC
Coding option is being
programmed.
Yellow Trouble LED indicates
panel is in programming mode.
Green LED is AC Power.
Содержание AutoPulse Z-10
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