Interconnecting Alarms - Ei Electronics Ei140RC Series Instruction Manual

Ensure the alarm operates correctly - see "TESTING &
MAINTENANCE" section on page 3.
Note: A maximum of twelve Ei141RC / Ei144RC /
Ei146RC Smoke or Heat Alarms may be interconnected.
Up to 8 additional accessories may also be connected.
If you wish to connect more than 12 Alarms contact your
local distributor.
Systems using more than 3 or 4 Alarms must be very
carefully planned to ensure nuisance/false alarms are
not excessive. e.g. from cooking fumes or steam. The
following is suggested:
• An Alarm Control Switch (model Ei1529RC) or a
Fire/CO Alarm Controller (model Ei450) should be
incorporated into the system and be readily accessible
to all occupants so that the source of an alarm can be
quickly identified.
• All Alarms must be cleaned and maintained regularly.
• A qualified person must be on call to quickly remove
any nuisance units (i.e. units with red light flashing
rapidly) which are causing all the other Alarms to
sound.
WARNING: Do not connect these Alarms to any
other model produced by another manufacturer.
Doing so may damage the Alarms and could result in
a shock or fire hazard.
Wiring must be installed in compliance with local
regulations.
In the UK it is recommended that the following
coloured cores are used (for example with triple flat
6243Y cable).
230V supply
Neutral
Interconnect
The interconnect wire (minimum 0.75mm
be treated as if it was Live. It should be insulated and
sheathed.
A maximum of 250 metres of wire can be used (maximum
resistance between detectors 50 Ohms).
These Smoke/Heat Alarms should be interconnected
only within the confines of a single family living unit. If
they are connected between different units there may be
excessive nuisance/false alarms. Everybody may not be
aware that they are being tested or that it is a nuisance/
false alarm caused by cooking etc.
Note: Heat Alarms must be interconnected to other
Smoke Alarms. They are not suitable as a fire safety
device unless they are part of a fire safety system i.e.
when interconnected to one or more Smoke Alarms.

Interconnecting Alarms

Brown
Grey - sleeved blue at terminations
Black
Figure 6
20
2
cable) must