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
SL
C-
na
cZ3.
cwm
f
Power Supply Jumper
Relay Connector Assembly
Figure 6.6 NFPA Class A Notification Appliance Circuit