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VAC VOICE ALARM SYSTEM
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VAC Installation and Maintenance Manual • Approved Document No. DAU0000402 Rev 6 • Page 9
To comply with BS5839-8 we recommend the use of fire-resistant cables for all life safety functions
(loudspeaker, fire alarm interface, emergency microphone and master to slave wiring).
Non-life safety functions, such as paging and background music, can be wired using Cat 5
s
tructured cable (always wire Audio + and Audio – in the same twisted pair).
Always give due consideration to voltage drop.
All wiring should come into the enclosure via the knockouts provided and be fixed tidily to the
relevant terminals. For an overview of the connections required for the fire alarm interface,
loudspeakers, emergency microphone, paging/background music equipment and slave AVACs,
please refer to the relevant sections later in this manual (see Contents, page 2).
Note that correct cable glanding is essential and due regard should be paid to any system
specifications which demand a certain cable type (providing it meets the appropriate national
wiring regulations).
PLANNING THE WIRING
All System wiring should be installed to meet the appropriate parts of BS 5839-8 (1998),
BS EN 60849 (1998) and BS 7671 (Wiring Regulations). Other national standards of
installation should be adhered to where applicable.
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