1 A loop should not pass through a space twice.
Where this is not practical (e.g. for large public spaces), the part
of the loop which by necessity passes through the space for a second
time should be installed at the maximum possible distance from the
other parts of the loop.
2 Definitions:
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.1
Loop: electrical circuit linking
detectors of various sections in a sequence and connected (input and
output) to the indicating unit(s).
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.2
Zone address identification capability:
a system with individually identifiable fire detectors.