Document # 50079 Rev. D 05/23/97
Page
16
4.2 Controlling Four Outputs from Two NAC Inputs
This application expands notification appliance power by an additional 6.0 amps.
Use up to four Class B (Style Y) outputs or two Class A (Style Z) and two Class B
(Style Y) outputs. In this example, the FACP Notification Appliance Circuits will
activate the remote power supply when reverse polarity activation occurs due to an
alarm condition. NAC #1 will activate FCPS outputs 1 & 2 and NAC #2 will activate
outputs 3 & 4. Trouble conditions on the power supply are monitored by the FACP
via Notification Appliance Circuit #1. Since Input #1 can monitor troubles, it is
advisable to control silenceable notification appliances with this circuit and
nonsilenceable or resettable smoke detector power with Control Input #2.
Figure 4-2: Two Inputs Controlling Four Outputs
Optional Style
Z Return
Optional Style
Z Return
*
*
*
*
This circuit may be power-limited or nonpower-limited
Continuation of Notification Appliance
Circuit #1 from FACP
This circuit must be power-limited by the FACP
Control Input #1
Control Input #2
Continuation of Notification Appliance
Circuit #2 from FACP
Fire Alarm
Control Panel
Notification
Appliance
Circuit #1
Notification
Appliance
Circuit #2
Notes:
1) ELRs must be used on the Notification Appliance Circuits. Refer to the respective FACP
installation manual for corresponding ELR value. If no devices are installed on a branch,
dummy load the circuit with the ELR.
2) Do not loop wires under screw terminals. Break wires to maintain proper supervision.
3) For a list of compatible devices, refer to the Fire-Lite Device Compatibility Document.
* Use listed ELR (P/N R-2.2K) to terminate Style Y NAC. ELRs are
not required when Style Z return is wired.
Note: All Notification Appliance Circuits are supervised.
ELR
ELR
Note 1
Note 1
Refer to Section 1.1 for current ratings.
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