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installed, cover it completely, particularly around the edges,
with a dust cover (eg. with the elasticated cover supplied or
a plastic bag), until all cleaning is finished.
The Alarm must not be connected when the house wiring
insulation is being checked with high voltages i.e. DON'T USE A
MEGGER ON THE ALARM.
WARNING: Mains operated Alarms should be installed and
interconnected by a qualified electrician in accordance with the
Regulations for Electrical Installations published by the Institution
of Electrical Engineers (UK). Failure to install this Alarm correctly
may expose the user to shock or fire hazards..
WARNING: 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.
Note: BS 5839-Part 6:1995 gives the following recommendations
regarding the mains supply to be used in different situations. A
grade D system consists of one or more mains powered Smoke
Alarms, each with an integral standby supply. (The Ei151TL,
Ei156TLH Smoke Alarms and Ei154TL Heat Alarms with
rechargeable lithium back-up cells can be used in a grade D
system). A grade E system consists of one or more mains
powered Smoke Alarms with no standby supply.
The power supply for Alarms in a grade D system should be
derived from the public electricity supply to the dwelling. The
mains supply to the Alarms should take the form of either:
(a) an independent circuit at the dwelling's main distribution
board, in which case no other electrical equipment should be
connected to this circuit (other than a dedicated monitoring device
installed to indicate failure of the mains supply to the Alarms); or
(b) a separately electrically protected, regularly used local lighting
circuit.
The power supply for Alarms in a grade E system should be
derived from the public electricity supply to the dwelling. The
mains supply to the Alarm(s) should comprise a single independent
circuit at the dwelling's main distribution board. No other electrical
equipment should be connected to this circuit (other than a
dedicated monitoring device installed to indicate failure of the
mains supply to the Alarms).
IF ALARMS ARE BEING INTERCONNECTED, ALL ALARMS
MUST BE CONNECTED TO A SINGLE CIRCUIT.
Note: Do not connect the Smoke Alarm to dwelling mains supply
giving a square wave output e.g. solar panel conversion. The
alarm must have a sinusoidal 230VAC supply.
INSTALLATION
1. Select a location complying with the above advice.
2. Disconnect the AC mains supply from the circuit that is going
to be used.
3. Install a junction box where the alarm is to be placed. If the
mounting plate is going to be screwed directly on to the junction
8
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