Name of Series
Environment
Model Series
Description
Mounting Type
Outdoor Commander
Series
Outdoor
WGEC24
Horn Strobe
Wall
Outdoor Commander
Series
Outdoor
WGES24
Strobe
Wall
Outdoor Commander
Series
Outdoor
GEH24
Horn
Wall
GX91/GX93 Series
Indoor
GX93
Mini Horn
Wall
System Sensor Compatible NAC Devices
The Sigma A-CP Fire Control Panel accepts compatible System Sensor NAC devices for use on the
special application outputs of NAC 1 and NAC 2. The number of compatible devices that NAC 1 and NAC
2 can each safely operate is limited by a 2.5 A current threshold. Installers must limit the population of
compatible devices in each NAC circuit by this 2.5 A threshold.
A circuit design is limited by the power source and device-loads connected to it. A combination of
device-loads can be safely installed in a circuit when the circuit is operated within the constraints of the
power source threshold. There are no exclusions for the amount of device-loads that can be safely
installed in the circuit as long as the maximum current load is below the output current available from
the power source.
The Sigma A-CP Fire Control Panel can also safely operate combinations of device-loads on NAC 1 and
NAC 2. These device-loads can include combinations such as strobes, horns, strobe/chimes,
strobe/horns and speaker strobes. The sum of this device-load combination is limited by the 2.5 A
available from each NAC output. Kentec recommends designing and installing combinations of NAC
circuits based on this “device-load” versus “current- available” understanding.
Reference manufacturer data sheets for individual device loads and then total the loads to determine if the
sum exceeds the 2.5 A threshold of each NAC output.
Reference Section 1, Installation Wiring Documents, Notification Appliance Circuit (NAC), Specifications for
additional parameters related to the NAC 1 and NAC 2 outputs.
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