40
InStallatIon anD oPeratIon manual
25-15049-G
October 2021 www.eaton.com
7. Installation
Wiring configurations
Spurs can be taken off the loop in the following ways:
1. CZMU352 Addressable Interface - Allows up to 20 conventional smoke
detectors and unlimited Eaton conventional call points
2. Direct Loop Spur Wiring - Allows a zone of analogue sensors and callpoints
to be directly spurred off the loop
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The mains cable tail ends must be insulated to prevent dangerous conditions
arising in the event of accidental switching on of the mains supply.
7.3 Networking
Up to 250 panels can be networked together to operate as a single networked
system. To achieve this each panel must be fitted with a network card (supplied at
additional cost).
When operating as a networked system all fire and fault event information is
displayed at every panel, silencing and resetting of alarms can also be carried
out from any panel on a networked system if panels are suitably configured.
Networked panels are connected using a ring topology.
Networked panels can be used as active repeaters.
The recommended network cable for the network connection between panels is
an enhanced Firetuf cable manufactured by Draka cables (part number 910234.)
Screen continuity must be maintained throughout the entire network circuit including
at each junction point. The cable should be grounded at least once per segment,
and preferably at each device. Grounding the shield at every device assists in
suppressing 50/60 Hz standing waves. The screen or drain wire of the network cable
should not be considered as a safety earth and therefore should not be connected
to terminals marked with the earth symbol, except at the panel, and should not be
insulated with green and yellow sleeving. Where the network cable passes between
buildings, screen continuity should not be maintained from building to building.
The cable screen should be connected to the earth of one panel in each building.
Continuous earth connections across a large network should be avoided.
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If a networked panel is hard reset, it is recommended to perform a hard reset
on all panels on the network to align current event data.
