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INSTALLATION AND OPERATION MANUAL
25-16327-B November 2020 www.eaton.com
Section 1: System installation and design
a.
The isolating protective device is fed from the live side of the main isolating
device in which case the label on the isolating protective device, should read
in addition
WARNING
“This supply remains alive when the main switch is turned off” .
A further label should be placed on the main isolating device reading
WARNING
“The fire alarm supply remains live when this switch is turned off” .
Or
b.
If the isolating protective device is fed from the dead side of the main
isolating device, a label should be fixed to the main isolating device reading .
WARNING
“This switch also controls the supply to the fire alarm system” .
Distributed power supplies
The above also applies to any distributed power supply (i .e . mains connections for
Repeater Panels, Sounders Controller Units, etc .) .
Cable segregation
All cables for the fire alarm system should be segregated from any other cables/
wiring/services .
Wiring configurations
Spurs can be taken off the loop in the following ways:
1.
The Zone Monitor Interface - Allows up to 20 conventional smoke detectors and
unlimited Eaton call points.
2.
The Spur Isolator Unit - Allows a zone of analogue Sensors and call points to be
directly spurred off the loop .