Installation Manual

Output Circuits
26
411UDAC Document #51073 Rev. D 12/09/2008 P/N 51073:D
2.5 Output Circuits
Notification Appliance Circuit
The 411UDAC provides one Style Y (Class B) NAC (Notification Appliance Circuit). The NAC is supervised
and power-limited and is capable of 1.0 amp of current. Refer to the Device Compatibility Document for a listing
of compatible notification appliances.
Note:
1. The 411UDAC can only be used to supplement host panel NACs.
2. Do not connect strobes to the 411UDAC Notification Appliance Circuit.
The NAC may be programmed as follows:
• Silenceable
• Nonsilenceable (waterflow)
• Silence Inhibited (one minute)
• Autosilence (5 to 30 minutes)
+
+
+
TB4
B+
NAC
+12V POWER
+B- -
FIGURE 2-8:Notification Appliance Circuit Connections
Style Y (Class B) Notification Appliance Circuit
(supervised and power-limited).
2.2K ohms, ½ watt P/N 27070
Polarized Bell
Polarized Horn
Polarized Horn
Dummy Load NAC circuit with 2.2K ohm, ½ watt
End-of-Line resistor if not being used.
Note: Notification Appliance Circuit
polarity shown in alarm state
411ANAC.CDR