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Control Modules
7.
Refer to Device Compatibility Document for compatible notification appliances and relays.
NOTE: A power supervision
relay is required only on the
last module of the power run
unless a type ID with built-in
supervision or the alternative
wire method is used.
47K, 1/2-watt
7.4 Wiring a Style Z NAC (Four-Wire) with Addressable Control Modules
Figure 7.5 depicts a supervised and power-limited NFPA Style Z (Class A) Notification Appliance Circuit (NAC) using the FCM-1 mod-
ule. In the sample wiring drawing below, polarized alarm notification appliances are shown connected to the module in a four-wire con-
figuration.
1.
See "Power Considerations" on page 58 for information on supervising 24 VDC power.
2.
Each module can control 2 amps of resistive load (on electronic devices) or 1 amp of inductive load (on mechanical bells and
horns).
3.
A power supervision relay is required only on the last module of the power run unless:
• using the no-relay alternative wire method; see Figure A.2, "Alternate: 2-Address Method of Supervising a 24 VDC Circuit".
• using a panel with FlashScan type IDs that provide built-in power supervision. Refer to the panel installation documentation for
a list of type codes.
4.
Do not T-Tap or branch a Style Z circuit.
5.
Do not loop wiring under the screw terminals of any notification appliance. To maintain supervision, break the wire run at each
device.
6.
Refer to the Device Compatibility Document for compatible notification appliances and relays.
42
24 VDC
Nonresettable
power
ELR
24 VDC Notification
Appliances
NACs
Module polarities are shown in alarm condition
Figure 7.4 NFPA Style Y Notification Appliance Circuit with FCM-1
24 VDC Nonresettable power
24 VDC
notification
appliances
Module polarities are shown in Alarm.
Figure 7.5 NFPA Style Z Notification Appliance Circuit with FCM-1
Wiring a Style Z NAC (Four-Wire) with Addressable Control Modules
NAC Return
NAC Out
Notifier SLC Wiring Manual — P/N 51253:U5 12/20/2017
SLC
FCM-1
SLC
FCM-1
NOTE: A power supervision
relay is required only on the
last module of the power run
unless a type ID with built-in
supervision or the alternative
wire method is used.
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