796688 (4188-657)_i2 _06/03
7
Notes to the installer
Second fix installation
Notes
The installer should follow the general requirements of:
BS5839:Part 1, the code of practice relating to the fire
detection and alarm systems for buildings.
The relevant parts of the BS7671 Requirements for
Electrical Installation, Institute of Electrical Engineers
Wiring Regulations 16th edition.
To prevent the possibility of damage or dirt degrading the
performance or appearance of the System products, the
installation of second fix items, such as the
electronic
module
, should be delayed until all major building work in
the area is complete.
The installer should ensure:
Cables recommended in the manual are used for
wiring the system 800.
Cable gland is used for the mains supply cable.
Unused knockouts on an enclosure that have been
removed are not left open.
The wires between the cable termination point and
terminals are as short and straight as possible.
The cables of the system 800 and other systems are
separated by at least 160mm, unless dedicated
conduit / ducting is used.
No part of the building structure is used for earthing.
The cable length between the Repeat LED unit and
the respective detector, where used, does not exceed
10m. This length must be included in the total cable
length of the loop.
The ends of the mains flexible conductors terminated
in the product are crimped, using sleeved or insulated
crimp terminals.
Each mains powered control and indicating equipment
is supplied via a dedicated 2-pole fused spur unit that
is fed from a switch or protection device at the local
mains supply distribution board.
Mains power to the control and indicating equipment
is not supplied from an
IT Power System
.
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