INSTALLATION PROCEDURE
Ei225EN (Only)
Warning:The CO alar m should be installed by a qualified electrican in accordance with
the IEE wiring regulations (BS 7671). Failure to install this alarm correctly may expose
the user to shock or fire hazards.
Procedure:
1. Select a location complying with the above advice.
2. Disconnect the AC mains supply from the circuit to be used.
3. Slide off the cover as shown in fig 1.Press gently in the centre to release the catches
before sliding upwards.
4. Remove the terminal cover screw and expose the connecting terminals.
5. (a) If the wires are coming directly out from the ceiling/wall locate the wire entry
slot over the wires and mark the two mounting screw locations.Screw the unit to the
ceiling/wall (ensure screws do not penetrate buried wires. The unit can also be
screwed on to a standard recessed junction box if required.Seal the wire exit holes
(with silicone or similar) to prevent air draughts preventing the carbon monoxide from
reaching the sensor.
(b) If surface wiring is being used, bring the wiring in from either of the vertical sides
or the bottom as shown in figure 5. Note surface wiring cannot be brought in from the
top as it would be in the way of the cover sliding off and also might allow water to
penetrate. Screw the unit to the wall.
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