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Installation
INS 034-9
13
2.4.4
Powered Detectors
Always consult the manufacturer's connection instructions. Powered detectors are
connected to one of the eight terminal pairs labelled Z1 to Z8 on the control panel and
are powered from the two terminals labelled AUX on the control panel as follows:
Terminal
Connect To
Suggested Colour
AUX+
Detector Positive Supply (+12V)
White
AUX-
Detector Negative Supply (0V)
Green
Figure 5 - Wiring Powered Detectors
1)
Power is wired in parallel, whereas normally closed alarm loops are wired in
series, (normally open alarm loops are wired in parallel).
2)
Mixing powered detectors and magnetic contacts on one zone is easiest if
the wiring is taken from the control panel to the powered detectors first.
3)
BS 4737 requires that if two or more powered detectors are connected to
one zone, they must each have an audible or visual latching indication or
both, except on an entry/exit route.
Figure 5a - Wiring a Single Powered
Detector to a Zone
(see also Figure 6)
Figure 5b - Wiring Multiple Powered
Detectors to a Zone
(see also Figure 6)