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Notifier SLC Wiring Manual — P/N 51253:U9 12/3/2021 45

Wiring a Class B NAC (Two-Wire) with Addressable Control Modules Control Modules

7.2.1 Wiring a Solenoid with the FCM-1-REL

(For use with NFS2-3030, NFS2-640, NFS-320(C), and NFS-320SYS.) Figure 7.3 shows the connections to wire the FCM-1-REL to a

solenoid. For UL 864 10th edition applications requiring a manual disconnect switch on the releasing device, see Section 7.5, “Connect-

ing a Releasing Device to the Addressable Control Module”.

7.3 Wiring a Class B NAC (Two-Wire) with Addressable Control Modules

Figure 7.4 depicts a supervised and power-limited NFPA Class B Notification Appliance Circuit (NAC) using the FCM-1 module. In the

sample wiring drawing below, polarized alarm notification appliances are shown connected to the module in a two-wire configuration.

1. See Appendix A, “Power Considerations”, on page 66 for information on monitoring 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 -

Class B”.

• using a panel with FlashScan type IDs that provide built-in power supervision. Refer to the panel’s installation documentation

for a list of type codes.

4. Do not T-tap or branch a Class B circuit.

5. Terminate the circuit across the last device using a UL-listed End-of-Line Resistor 47K, 1/2-watt, SSD P/N A2143-00 (ELR-47K in

Canada).

6. Do not loop wiring under the screw terminals of any notification appliance. To maintain supervision, break the wire run at each

device.

Figure 7.3 FCM-1-REL Wiring Locations and Rear View - Jumper Location

SLC (-)

SLC (+)

24 VDC (-)

24 VDC (+)

Solenoid A (-)

Solenoid A (+)

Solenoid B/A (+)

Solenoid B/A (-)

FCM-1-REL

Wiring Connections

When using the

FCM-1-REL for

Class B

applications,

remove jumper J1.

FCM-1-REL

Rear View - Jumper Location

NOTE: FlashScan mode only: The FCM-1-REL will not function on an SLC loop that is programmed for CLIP mode.

Honeywell NOTIFIER SLC User Manual

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