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7
2.6 Wiring
The unit is designed for easy wiring installation.
“Plug-in” terminal blocks are provided for all connections to the
unit.
FIGURE 2 above shows the positions for all connections to the
card.
NB: Minimum / Maximum cable size for terminal block
connections is limited to 0.35mm² - 2.5mm² (22-14AWG).
NB: Maximum rating of relay contacts when mounted in the fire
panel is 24V, 1A
– DO NOT USE for 230V AC switching.
WARNING: If the card is used to switch 230V AC then the cables should be
of suitable size and insulation for the voltage / current load. Keep this
wiring away from any SELV wiring. Fit warning label next to connections.
230V AC MUST BE the same phase in the enclosure!
If the loads are inductive then ensure there is protection against back EMF.
Use the appropriate snubber network.
All electrical wiring installation work should be carried
out in accordance with the code of practice applicable
in the country of installation.To maintain electrical
integrity of the SELV wiring on the DC Power and
communications lines all SELV wiring should be
segregated from LV mains wiring and be wired using
cable with insulation suitable for the application.
To minimise the effects of EMC interference all data
wiring circuits should be wired with a twisted pair of
conductors with a cross sectional area suitable for the
loading conditions.
In areas where cabling may come into contact with
high frequency interference, such as portable radio
transceivers etc. the data wiring cable should be of a
twisted pair construction within a overall screen. Care
should be taken to correctly terminate this screen,
refer to the information below.
2.6.1 AC Wiring (Boxed Units)
Route the high voltage mains AC wiring into the enclosure at
the upper left corner only. Keep the AC wiring away from the
circuit boards and all other wiring.
FUSE
Brown
Green
LIVE
EARTH
NEUTRAL
Panel Wiring
Blue
3.15A
FIGURE 4
Connect the Unit to the mains supply via a
readily accessible disconnect-device
(Isolation Switch) and suitable earth fault
protection incorporated in the building
installation wiring. The Mains cable should
be 0.75mm
2
cable rated at 250V and fused
via a 5A anti-surge fuse.
Must be
earthed
The panels must be connected to the supply earth
through the power cable.
The mains input connector is shown in the diagram opposite.
Note the positions of the earth, neutral and live terminal
connections. These are clearly marked on the label next to the
connector. The connector block contains an integral fuse
holder.
Secure the mains input wiring by tie wrap as close to the
terminal block as possible.
The fuses are rated at: T 3.15A H 250V
Replace with correct rating and specification only.
2.6.2 Battery Installation (Boxed Unit)
Two 7AH batteries can be installed in the bottom of the
enclosure.
Battery Leads are supplied.
Connect as shown in FIGURE 5 opposite.
+V DC POWER
0V DC POWER
B
BATTERY
–
FIGURE 5
OBSERVE POLARITY OF CONNECTIONS
WARNING:
HIGH VOLTAGE
CIRCUIT
Single Phase ONLY!
