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4.4
PANEL MOUNTING
To facilitate fixing and alignment, all panels, irrespective of size, are provided with a single
'keyhole' near the top of the box and six indented mounting holes . It is not necessary to
remove the backplate or outer door to mount the panel. Additional boxed power
supply/ancillary equipment units can be mounted in a similar manner.
Care should be taken to provide adequate protection to the control panels components when
drilling metal work and terminating MICC type cables.
If the control panel is being installed in a harsh environment adequate protection should be
afforded to stop the ingress of dust, water etc, as it should be remembered that the control
panel is microprocessor based electronic equipment.
Prior to commissioning any installation debris should be removed from the control panel,
preferably with a vacuum cleaner.
4.5
LOOP WIRING
The detection/control wiring takes the form of a loop originating from the +ve and -ve LOOP
IN terminals of the terminal board. A separate pair is used for each loop, each loop control
board being capable of terminating up to two loops. It is possible to wire "spurs" onto a
detection loop, although full system integrity will be lost as the panel is unable to read the
spur in both directions.
Short circuit isolators should be installed adjacent to the control panel, on the feed and return
of each detection loop. Additional short circuit isolators should be fitted at the boundaries of
each fire zone. These zones are determined by the fire compartments they cover and the
restriction of a zone to cover more than 2000 m²
4.6
EXTERNAL WIRING
Sounder Wiring
The standard sounder circuitry is two monitored pairs with an end of line resistor of 4K7.
This circuitry can be tested in the conventional manner before connection to the panel.
Power Supply connection
It is recommended that the standard panel be used with an external 4/2 switch mode power
supply mounted along side the panel. In systems where larger supplies are required which
cannot be located adjacent to the panel, the following conditions should be met.
1.
The charger should be no more than 3 metres from the panel.
2.
The cable size should be such that the voltage drop on full alarm should not exceed
one half of a volt.
TM0064
Page 75 of 91
Issue 2.01
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