5
INSTALLATION
CONTROL PANEL
The unit should be mounted in a convenient position for the operator away from possible mechanical damage. Remove the
enclosure and use it to mark out the mounting holes and cut out on to the bulkhead. Mount the control panel on to the bulkhead
temporarily using the M3 nuts and bolts provided. Once the electrical installation is completed, remove the nuts and screw the M3
bolts directly in to the captive nuts mounted on the enclosure. The control unit has a 3.15A fuse tted as standard. The current,
drawn from the vessels power supply, will depend upon peripheral items connected. The control unit and sensors typically draw
no more than 400mA in worst case. When including gas valves, sounders, beacons etc. the overall current consumption will
increase and therefore power supply cables, circuit breakers and fuses should be rated accordingly.
With integral batteries and charger the mains driven TYPE 3 power supply provides a battery backed 24VDC supply. Cable entry
must be made through the cable glands supplied. The enclosure has 12 x 20mm holes and the cable glands, should be mounted
in the most suitable positions. The unused holes should have the 20mm blind grommets (supplied) tted.
FIRE DETECTION
Fire detection circuits should be wired using cable approved for re detection installation such as FIRETUF or FP200. Note that
cable screens, if used, should only be earthed at one end.
It is good practice to always make the rst device on a re detection zone a call point, enabling manual operation of the alarms
when early signs of re are spotted before any detector has operated. Additionally making a call point the rst item on a zone
reduces the risk of it being out of circuit due to head removal or wiring faults.
CHOOSING THE CORRECT DETECTORS
The types of detector required varies for each location. Guidance should be sought from classication societies and SOLAS
regulations.
For general use, two types of smoke detector are recognised by standards as good, general-purpose re detectors offering a
high level of protection.
1. Ionisation smoke detectors have a high sensitivity to res that produce small smoke particles ie fast-burning, ame res that
can burn for some time without generating much smoke. (NO LONGER MARINE APPROVED)
2. Optical smoke detectors are particularly well suited to detecting slowburning, smouldering res which produce smoke with
large particles. They are widely used for protection in areas such as accommodation, escape corridors and electrical rooms, as
well as for general purposes.
Heat detectors offer protection in areas such as galleys and engine rooms where the environment is dirty or smoky under normal
conditions or where there is a high presence of airborne particles such as water vapour or exhaust fumes. However, it must be
recognised that any heat detector will respond only when a re is well-established and generating a high heat output. Therefore,
especially for vessels with large engine rooms, ame or smoke detectors should be considered.
Two types of heat detectors are available:
1. Rate-of-rise heat detectors are designed to sense a rapid increase in the temperature and are useful in environments where
the ambient temperature is normal, such as small occasionally used galleys, workshops and stores.
2. Fixed temperature heat detectors will signal an alarm once the temperature exceeds a pre-dened level and are effective
in environments with uctuating temperatures (such as boiler rooms) or where the ambient temperature is unusually high (for
example in an engine room).
