Ampac FireFinder PLUS Specifications Page 14

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Page 8
FIREFINDER PLUS
(
AUST
)
INSTALLATION
,
COMMISSIONING OPERATION
4.5 Cabling Recommendations
Conventional Zones
Cabled in red Twin Plastic Sheath (TPS), Fire rated Radox or approved equivalent.
Analogue Loop
Two core cable. The minimum cable size is 0.75mm
2
, the maximum loop resistance is 50 ohms and
the maximum loop distance is 2km.
RS 485 Network
Single twisted pair screened (2 core) cable originating from FACP extending through the protected
areas and returning to the FACP.
Cable Specifications
Capacitance of 100 Pico farads per metre or less
Resistance of 100 milliohms per metre or less
Impedance of loop typical 100 to 120 ohms
Maximum distances between modules 1.2km providing cable meets above specifications.
Recommended cable type
Belden 8132 or 9842 (non fire rated)
Radox FR Communication 0.75mm 1 pair (fire rated) x 2
SmartTerminal
Single twisted pair shielded cable (2 core) plus 2 core power, or local supply. Maximum distance
between from the last SmartTerminal and the FACP is 1.2km.
LED Mimic (RS485)
Single twisted shielded cable (No return loop) plus 2 core power or local supply.
Maximum distance between each LED repeater card and FACP is 1.2km.
Recommended Cable Type
Hartland HC2335
Belden 9841
Radox FR Communication
Fire Alarm Bell Connection
Two core 1.5mm
2
PVC sheathed MIMS (Mineral Insulated Metal Sheathed) to the bell location.
Brigade Connection via Telecom
Two core 1.5mm² PVC sheathed MIMS from the FACP to the Telecom MDF.
RJ45 Multi-drop Serial Port
8 core Flat cable
Power Supplies / AC Mains
The requirement for the mains supply to the FACP is fixed wiring, using three core cable (no less than
0.75mm² and no more than 2.5mm² ) or a suitable three conductor system, fed from an isolating
switch fuse spur, fused at 3A. This should be secured from unauthorised operation and be marked
'FIRE ALARM: DO NOT SWITCH OFF. The Mains supply must be exclusive to the FACP.
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