FireLite SLC Wiring Manual — P/N 51309:R3 7/29/2019
49
Wiring a CMF-300-6 Module Control Modules
6.5.2 Wiring a Class A NAC (Four-Wire)
A supervised and power-limited NFPA Class A NAC with a single power supply dedicated to a single NAC using a CMF-300-6 module.
Polarized alarm notification appliances are shown connected to the module in a four-wire configuration.
• See “Power Considerations” on page 63 for information on monitoring 24 VDC power.
• Each module can control 2 amps of resistive load (on electronic devices) or 1 amp of inductive load (on mechanical bells and
horns).
• 24 VDC power must be provided from a UL listed power supply for fire protection use.
• A power supervision relay is required only on the last module of the power run.
• Do not T-tap or branch a Class A circuit.
• Do not loop wiring under the screw terminals of any notification appliance. To maintain supervision, break the wire run at each
device.
NOTE: Refer to the Device Compatibility Document for compatible notification appliances and relays.
Power Supervision
Relay
(EOLR-1)
24 VDC notification appliances
24 VDC
nonresettable
power
NAC
Out
CMF-300-6
NAC
Return
SLC
SLC-nacZ3.cwmf
Power Supply Jumper
Relay Connector Assembly
Figure 6.6 NFPA Class A Notification Appliance Circuit
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