9
2.2 Connection of Cables
All units in the product range are powered by an External 24 V DC Supply. Alternatively, all the units (except for the PICO) can be fitted
with either a 110v or 230v ‘AC Mains PSU/ Battery Charger Option Module’ which is fitted internally.
2.2.1 FT1, 4, 6, 8, 15 Connections
When the ‘AC Mains PSU/ Battery Charger Option’ is fitted, emergency back-up batteries (up to 17 AH) can also be fitted internally, or
larger batteries can be housed separately and connected to the unit to provide extended back-up duration. When external back-up
batteries are employed, it is important to extend the ‘Battery Thermistor’ sensor to the battery location (See section 2.2.3 for further
details).
To gain access to the interior of the FireTracer unit, first remove the front cover. It is secured by two screws underneath and “hinged” at
the top, allowing complete removal. If the beacon option is fitted, a cable-loom is attached; this may be unplugged at either end, but it will
be found easier to reconnect the plug connecting to the main unit.
To access the Fault Relay and other I/O Module connections, the front panel must be dropped down by loosening the two knurled screw
fixings at either side.
As shown in the diagram on page 10, knock-out cable entry points are provided at the top and left-hand side of the metal Back-Box. Where
the field wiring to the unit is not
via conduit tubing, cable glands of a suitable size to fit the 20mm diameter holes must be fitted to all used
cable entry holes.
A M5 chassis earthing stud is provided for the grounding of the unit, using a suitable gauge of wire or earth braiding, to a primary earth
point (i.e. copper water pipe or an earth-stake etc.). This chassis earth should be connected on all DC powered installations, and can be
utilised on AC installations if required.
The fuses used are: for the Battery, an 8 Amp Fast; for the Mains, a 2 Amp Time Delay.
The diagram on page 10 also shows where to connect:
• The 24 V DC supply
• The AC power supply (as an alternative to an DC supply)
• Standby battery connections (if fitted).
• The temperature sensor (supplied). This must
be connected if back-up batteries are fitted.
• Fault Relay contact connections
• Auxiliary 24 V output supply (fused to 1 A) for powering an external sounder, addressable I/O units etc.
• Remote Reset input line; Activated by applying 24 V.
• RS485 Communications; Used for operating the display panel remotely, or for ICAMnet where multiple units can be connected to
a host PC running WinTracer or other software.
• Ethernet connection – Used for connecting to a host computer. The Unit can be monitored and driven remotely.
• RS232 connection – Used for conducting Test/Configuration functions and interrogation of the ‘Fault Log Data’ when connected
to a Remote User Panel or a PC running ICAM Detmon program
The mains power lead should be connected as per the drawing below.
Note: All colour coded installation wiring for the FireTracer Smoke Detector Unit MUST BE in accordance with the appropriate Local
Regulations. i.e.: UK – IEEE 16
th
Edition USA – NFPA 72
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