Fire-Lite ECC-FFT Firefighters Telephone - Manual (Page 17)

ECC-FFT Instruction Manual — P/N LS10031-000FL-E:B 9/4/2013 17
SLC Device Installation Installation
2.7 SLC Device Installation
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.
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.
!
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.
Part Number Model Name/Description Install Sheet PN
MMF-301 Mini Monitor Module I56-3654
I300 Fault Isolator Module I56-1381
Wire Gauge Max. Distance
22 AWG 1200 feet
18 AWG 3100 feet
16 AWG 4900 feet
14 AWG 7900 feet
12 AWG 10,000 feet