Notes to installers
Check
q
The power-up and
commissioning is done by the
servicing organisation.
q
The wires between the
termination point and terminals
should be
short
and
straight
as possible.
q
The cables of the fire detection
and alarm system and other
systems should usually be
separated by at least
160mm
,
unless dedicated conduit or
ducting is used.
q
Do not use any part of building
structure for earthing.
q
The cable length between the
Repeat LED unit and respective
fire detector where used ,
should not exceed
10m.
q
Cable Glands should be used
on the equipment for the mains
supply cable.
q
Unused knockouts on product
enclosure that have been
removed, should not be left
open.
Requirements
It is recommended that the
installer follow the general
requirements of:
q
BS5839:Part 1:2002 + A2:2008,
which is the
code of practice
relating to the fire detection and
alarm systems for buildings.
q
the relevant parts of the
BS 7671 Requirements for
Electrical Installation
.
Second fix
To prevent the possibility of
damage or dirt degrading the
performance or appearance of the
System products, the installation
of second fix items should be
delayed until all major building
work in the area is complete.
Fixtures and fittings
It is the installers responsibility to
provide:
·
adequate fixtures and fittings
for the type of construction
surface onto which a product
is to be installed.
·
as an aid to this decision, the
weight and overall size of
each full assembly together
with implications on cable
entries and routing should be
taken into consideration.
NOTE:
All these procedures
assume that the cable, gland,
steel box (BESA box) and other
related accessories are provided
by the installer.
As fitted wiring drawings
The installer should acquire:
q
site specific information from
the interested parties, for details
on the location of products for
installation
q
the acquired information
together with this guide and the
relevant standards should be
used to assist the work.
Earth continuity
To maintain earth continuity, the
cable screen must be continued
through each system device,
whether the earth is connected to
a device or not.
NOTE:
The cable from the main
panel to repeat panels if fitted
must be a screened cable.
Refer to Figure 8.
Fire Panels
Notes to installers
4188-424 issue 4_Part 1_10-09
5
4-off earth points
Mains input terminal
block c/w mains fuse
Mains supply
to panel
13-back
13-top
cable entry points
Gland
Earth
drain
Cable
Zone Cable termination
NOTE: Repeat panel link
cable entries are located
at the opposite end to the
mains cable entries, ie on
the Right Hand Side.
Panel backbox
Electronic assembly
Figure 8 Panel cable entry and earth points