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SLC Device Installation
2.7 SLC Device Installation
WARNING: RISK OF EQUIPMENT DAMAGE AND PERSONAL INJURY
!
SEVERAL DIFFERENT SOURCES OF POWER CAN BE CONNECTED TO THIS UNIT. ALWAYS
DISCONNECT ALL SOURCES OF POWER BEFORE INSTALLING OR SERVICING.
2.7.1 List of SLC Devices
The following SLC device can be used with the Fire Fighters Phone. See the device installation
instructions for more information (packaged with the device). Refer also to the SLC Wiring Man-
ual #51309for more information.
MMF-301
I300
2.7.2 Maximum Number of Devices
The ECC-FFT supports up to 24 MMF-301 devices on one FFT system.
2.7.3 Wiring Requirements for SLC Device
The following information applies to the MMF-301 - Mini Monitor module.
Wiring SLC in Style 4 (Class B) Configuration
No special wire is required for the ECC-FFT SLC loop. The wire can be untwisted, unshielded,
solid or stranded as long as it meets the National Electric Code 760-51 requirements for power lim-
ited fire protective signaling cables. Wire distances are computed using copper wire.
Maximum wiring resistance is 40 ohms to the farthest SLC device.
Maximum loop length depends on the wire gauge.
ECC-FFT Instruction Manual — P/N LS10031-000FL-E:B 9/4/2013
Part Number
Mini Monitor Module
Fault Isolator Module
Wire Gauge
22 AWG
18 AWG
16 AWG
14 AWG
12 AWG
Model Name/Description
Max. Distance
1200 feet
3100 feet
4900 feet
7900 feet
10,000 feet
Installation
Install Sheet PN
I56-3654
I56-1381
17
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