12 Gemini C-Series GEMC-NAC Extender Installation Instructions
zones are restored, will reinitiate the cadence alarm.
The strobes will continue until the
RESET
button is
pressed and all fire alarms are restored.
Method 2 (Non-standard Cadence)
The second method of synchronization uses non-
standard cadences in place of the standard temporal au-
dible alarm (this configuration is uncommon).
Because the system requires synchronized strobes,
compatible Wheelock or System Sensor "Smart" strobes
must be used. Conventional 24V sounding appliances
may be used or listed Wheelock or System Sensor de-
vices that provide for a synchronized strobe input and a
separate conventional horn input (such as the Wheelock
MT series).
Strobes and horns may not be shared on the same NAC,
therefore each group of notification appliances in the
same field of view and all audible notification appliances
in the same notification zone will require at least 2
NAC's, one for the strobe device, the other for the con-
ventional audible sounders.
Note:
The strobe wiring, programming and configuring
method is the same as method 1.
The horn will not be generating the temporal output and
therefore does not require synchronization. Horns on the
NAC circuits of the same GEMC-XXXMB or GEMC-
NACXX will be synchronized to each other; but they will
not be synchronized to horns wired to other GEMC-
XXXMB's or GEMC-NACXX's.
It is therefore advised
that horns wired to different GEMC-XXXMB's or GEMC-
NACXX's not be placed too close together.
Current requirements for the strobes are the same as
method 1, rules 2, 3 and 4.
Programming Non-standard (Method 2) Cadences
In PCD-Windows Quickloader download software, pro-
gram as follows:
1. Do not select option "Coded Alarms by Zone" in the
NAC/Output Options
screen;
2. Select "Silence-able, "Cadence "ENABLE" for each
NAC and one of the four available cadence options
in the
Cadence
column of the
NAC/Output Assign-
ment
screen;
3. Program the selected NAC to activate on fire alarm
or specific zone alarms in the
By Zone feature
screen (A-D, 1-8) or the NAC/Output Events
screen
Note:
All outputs selected for Cadence will only gener-
ate the single selected cadence type. NAC's can not
have different cadences.
Non-standard (Method 2) Cadence Operation:
When a fire zone, programmed to activate any NAC pro-
grammed for Coded, goes into alarm, the NAC will pro-
duce the selected Cadence type until a keypad is
unlocked and SILENCE is pressed. Subsequent alarms
that occur after silence, but before all fire zones are re-
stored will reinitiate the cadence alarm.
Method 3 (Coded Alarm by Zone)
The third method of synchronization uses
coded alarms
by zone
in place of the standard temporal audible alarm.
This method is requested for schools and other institu-
tions that would like to identify the device or zone that
initiated the alarm to determine the proper egress route
or to allow proper instructed authorities to quickly deter-
mine if a pull station had been improperly activated prior
to evacuation.
Because the system requires synchronized strobes,
compatible Wheelock or System Sensor "Smart" strobes
must be used. Conventional 24V sounding appliances
may be used or listed Wheelock or System Sensor de-
vices that provide for a synchronized strobe input and a
separate conventional horn input (such as the Wheelock
MT series).
Strobes and Horns may not be shared on the same NAC,
therefore each group of notification appliances in the
same field of view and all audible notification appliances
in the same notification zone will require at least 2
NAC's, one for the Strobe device, the other for the con-
ventional audible sounders.
Note:
The strobe wiring, programming and configuring
method is the same as method 1.
The horn will not be generating the temporal output and
therefore does not require synchronization. Horns on the
NAC circuits of the same GEMC-XXXMB or GEMC-
NACXX will be synchronized to each other, however,
they will not be synchronized to horns wired to other
GEMC-XXXMB's or GEMC-NACXX's.
It is therefore ad-
vised that horns wired to different GEMC-XXXMB's or
GEMC-NACXX's not be placed too close together.
Current requirements for the strobes are the same as
method 1, rules 2, 3 and 4.
Coded Alarm by Zone (Method 3) Programming:
1. Select option "Coded Alarms by Zone" in the NAC/
Output Options Screen
2. Select "Silence-able", "Cadence "ENABLE"" for each
NAC one of the 4 available cadence options in the Ca-
dence column of the NAC/Output Assignment screen.
3. Program the selected NAC to activate on fire alarm or
specific zone alarms in the By Zone feature screen (A-
D, 1-8) or the NAC/Output Events Screen
4. Select one of the 31 cadences for each zone in the
Zone assignment screen.
Note:
"Smart" Synchronized Wheelock and System
Sensor horns are NOT synchronized with conventional
horns programmed for temporal;
they must never be
placed in the same audible notification appliance notifica-
tion zone because they will not be synchronized
.
Coded Alarm by Zone (Method 3) Function:
When a fire zone, programmed to activate any NAC(s)
programmed with a coded alarm type, goes into alarm,
the NAC(s) will produce the selected Coded sequence
for the zone that initiated the alarm. The coded alarm
will continue until a fire keypad is unlocked and the
SI-
LENCE
button is pressed. Subsequent alarms that oc-
cur after silence, but before all fire zones are restored,
will cause all NAC's programmed for cadence enable to
generate the cadence programmed for the re-initiating
alarm zone.
