HCA Series Installation Manual
Page 17 of 58
V2.15
3.8 Notification Appliance Circuit (NAC) Wiring
The HCA series control panel has 4 built-in NACs which can be individually configured as either class B
(style Y) supervised notification appliance circuits (NACs), auxiliary power 24VDC circuits, auxiliary power
24V resettable circuits or auxiliary power 24V door holder circuits.
Figure 3.7 shows NAC 1 wired as a class B NAC. Observe the polarity of the wiring and the placement of
the 10k
end of line (EOL) resistor located at the very end of the class B wiring. To wire a NAC as an
auxiliary power circuit, observe the same polarity as shown in figure 3.7. Note that it is not a requirement
to include the EOL resistor.
-
+
+
+
-
-
Supervised
Power Limited
Class B Supervised
Notification Appliance Circuit
10k
Ω EOL Resistor
part number 0400-01046
1
2
3
4
NAC Connections
Figure 3.7- Supervised Notification Appliance Wiring
