Parts for later
installation
All unused parts should be retained in their respective container for safe
keeping until required.
NOTE: The installation of all outstanding parts is usually carried out
during Commissioning of the System.
Loop earth
continuity
To maintain earth continuity on a loop, the loop cable screen must be
connected through each system device on the loop, whether the earth is
connected to a device or not
NOTE: The network cable screen is earthed at one end only.
Mains supply
Mains supply to fire alarm control and indicating equipment must be via an
unswitched fused spur unit.
The fused spur isolator cover should be red and marked:
FIRE ALARM - DO NOT SWITCH OFF
Each of the fire alarm equipments’ fused spur units must be fed from a
dedicated switch or protective device at the local mains supply distribution
board.
Mains and
battery supply
connections
The mains and battery supply cables must be installed to the stage to
facilitate the power up for commissioning.
WARNING: Where mains cable are to remain disconnected,
their tail ends must be insulated to prevent dangerous
conditions arising in the event of accidental switching On of
the mains supply
Cable
termination
and connection
Terminate each cable at the entry point to the enclosure, using the cable
manufacturer’s recommended techniques.
Where the cable is required to be connected, ensure it is secure to the
respective terminal.
Where the cable is not required to be connected, leave 400mm (unless
otherwise specified) tail wire length and mark each core identifying its
final point of connection.
Wiring test
CAUTION: DO NOT undertake high voltage insulation tests
WITH THE CABLES CONNECTED to their terminals. Such a
test may damage the electronics circuitry in loop devices and
panels.
Parts for later installation
Notes to Installer
Senator II Installation Manual
1-2
78910-03NM Issue 2_10/96