10
The Alarm must be continuously powered 24
hours a day so it is important that it is not on a
circuit that can be turned off by a switch.
INSTALLATION PROCEDURE
1.
Select a location complying with the advice in the
previous section.
2.
Disconnect the AC mains supply from the circuit
that is going to be used to power the Alarm.
3.
The house wiring must be connected to the
terminal block on the mounting plate as follows:
L: Live
- connect to the house wires coloured
brown or marked L.
N: Neutral
- connect to the house wires coloured
blue or marked N.
IC: Interconnect
- If you are only installing
one alarm do not connect any cable to the IC
terminal.
See page 19 for information on interconnecting.
Warning:
Mixing the Live and Neutral connections
when interconnecting alarms will damage all the
alarms - ensure that the same colours are used
throughout the premises for Live, Neutral and
Interconnect wires.
We strongly recommend that you check for the
following
before connecting the alarm
:
• check for Live and Neutral using a two probe tester.
• check for Live using a neon tester.
• check that the Interconnect wire is NOT connected
to Live, Neutral or Earth.
Do not use an Earth wire
for the Interconnect line.
Note
: The Alarm does not need to be earthed. However
the terminal marked is provided for the convenience
of the installer so that any copper Earth wire or cable
coloured green & yellow, can be safely terminated.
4.
Lift off the wiring cover as shown in
Figure 5
overleaf.
5.
If the mains wires are being brought along the
surface, conduit can be inserted into the top and/or
bottom of the mounting plate.
(a) position the mounting plate, so that the cable
conduit is as shown in
Figure 5
overleaf.
(b) Carefully cut around the knockout on the outside
wall so the conduit fits. (
Note
: to comply with the
BS EN 60529, IPX2D protection rating, seal around
conduit with silicone rubber or similar to prevent
water entering).
6.
If the mains wiring is recessed, bring the wiring
through the rear hole in the mounting plate as shown
in
Figure 6
.
7.
Carefully align the mounting plate and screw into
place. Connect the wires to the terminal block. With
recessed wiring, ensure the rear gasket seals around
the edge of the hole in the ceiling or wall. This is to
prevent air draughts affecting the CO gas entering
the alarm. If the hole is not closed off by the gasket it
should be sealed with silicone rubber or equivalent.
