4.2 Interconnecting Alarms
Note: A maximum of twelve Ei141/144/146/161RC
/164RC/166RC Smoke or Heat Alarms may be
interconnected along with an Ei128R pattress with relay (see
“ACCESSORIES”section on page 15).
If you wish to connect more than twelve alarms contact your
local distributor (see page 16 for details).
Systems using more than 3 or 4 alarms must be very carefully
planned to ensure nuisance alarms are not excessive. e.g.
from cooking fumes or steam.The following is suggested:
• A Smoke Alarm Locator Switch (model Ei159 for use with
Ei141/144/146) or a Smoke Alarm Control Switch (model
Ei1529RC for use with Ei161RC/164RC/166RC) 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 type
of Ei Alarm (apart from those listed above) or 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 Brown
Neutral Grey - sleeved blue at terminations
Interconnect Black
The interconnect wire (minimum 0.75mm2cable) must 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).
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Figure 6
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