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Application, Installation & Commissioning Doc. version 2
6.1 Cable Recommendations
FIRECLASS Prescient III
ELECTRICAL SAFETY:
The volt-free relay contacts provided within the panel
must not be used to directly switch any voltage that
exceeds 50 V AC or 75 V DC. (Please also refer to relay
rating data).
This equipment requires a 230 V AC supply. All installa-
tion work should be carried out in accordance with the
recommendations of BS5839 Part 1 and the current edi-
tion of the IEE regulations by suitably qualified and
trained personnel.
6.1
Cable Recommendations
All external connections (except for mains power) to the
panel must be made using shielded fire resistant cable
such as FP200. The shield of each cable must be con-
nected to the earth bar inside the enclosure. The maxi-
mum cable core size permitted is 2.5 mm
2
CSA (cross
sectional area). The total end-to-end resistance of any
core should not exceed 20 Ω.
In addition, connection to the Status Lamp Units (SLUs)
should be made via data-grade fire resistant cable. The
total cable length for all SLUs should not exceed
2000 metres.
Mains cable compliant to BS6004, BS6500, or equiva-
lent must be used for connection to the Power Supply.
Cable up to 4 mm
2
CSA may be used.
6.2
Installation Procedure
1
Unpack the Control panel. If the panel door is locked
locate the panel keys (usually fixed to the top of the
panel) and open the door.
2
Locate the small plastic bag containing the installa-
tion spares as follows:
– 22 off End of Line resistoxs (10 kΩ – colour code
brown, black, orange, gold).
– Remote controls switch resistors:
– Sound alarms - 4.7 kΩ (yellow, purple, red, gold).
– Silence alarms – 1.8 kΩ brown, grey, red, gold).
– Reset – 560 Ω (green, blue, brown, gold)
– Valve monitoring resistors:
– Valve open – 2.2 kΩ (red, red, red, gold)
– Valve closed – 680 Ω (blue, grey, brown, gold)
– 3 off End of Line Capacitors (22 ºF)
– Spare 20 mm mains fuse T5AH250V
– Spare 20 mm battery fuse F6.3A250V
– 2 off cable ties
– 2 off C1565 actuator suppression units
– A set of battery leads (positive, negative and
jumper lead)
3
Disconnect the display ribbon cable from the internal
control board by pulling firmly but gently on the rib-
bon cable connector.
4
Disconnect the Earth wire from the chassis at the
top left of the chassis.
WARNING: Battery Operating
Temperature
Avoid operating temperatures
outside the range of -15 °C / 5 °F to
+50 °C / 122 °F for float/standby
applications.
The recommended normal operat-
ing temperature is 20 °C.
HIGH TEMPERATURE will reduce
battery service life. In extreme
cases this can cause Thermal Runa-
way, resulting in high oxygen/
hydrogen gas production and bat-
tery swelling. Batteries are irrecov-
erable from this condition and
should be replaced.
LOW TEMPERATURE will prolong
battery life but reduce output
capacity.
DANGER: Do NOT Incinerate Batteries
Do not incinerate batteries. If
placed in a fire, the batteries may
rupture, with the potential to
release hazardous gases and elec-
trolyte. VRLA batteries contain sub-
stances harmful to the environ-
ment.
Exhausted batteries must be recy-
cled. Return them to the battery
manufacturer or take them to your
Council waste disposal site for
appropriate disposal.
DANGER: THIS PANEL MUST BE
EARTHED
All electrically conductive parts of
this installation must be bonded to
the protective earth for safety.
CIRCUIT
Cable Cross-
sectional Area
Maximum
Cable Run
Zone
1.0 mm
350 metres
Zone
1.5 mm
600 metres
Alarm/Actuator
1.0 mm
200 metres
Alarm/Actuator
1.5 mm
350 metres
Table 14: Cable Recommendations
