6. INTERCONNECTING YOUR SMOKE ALARM
A maximum of 12 Ei 3105TYC/TYCH or Ei 100TYC Smoke
Alarms may be wired together such that when one unit
senses smoke all other units sound a warning. This helps
ensure smoke alarms will be heard. Do not connect to any
other device as it may damage the unit or affect performance.
A maximum of 250 metres (820ft) of signal cable can be used,
(maximum resistance between detectors 50 ohm). The units
are interconnected by wiring all the terminals marked 1
together, and all the terminals marked 2 together (as in figure
9) before screwing to ceiling. Draughts, through the ceiling,
from wiring openings, conduit, or mounting boxes/holes, may
blow smoke away from the sensing chamber, making it
insensitive. It is essential that all such openings including the
wiring hole (see figure 9) be closed by silicone sealant or
similar.
After wiring together the Interconnect Smoke Alarms, test the
first unit by pressing the button. All the detectors should alarm
and the test button on the first unit will flash about once a
second. Please note it can take up to 5 seconds for some of
the interconnected units to sound. Check all the other units
similarly.
These Smoke 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
alarms. Everybody may not be aware that they are being
tested or that it is a nuisance alarm caused by cooking etc.
7. IMPORTANT SAFEGUARDS
When using household protective devices, basic safety
precautions should always be followed, including those listed
as follows:
11
Figure 9
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