UNITY DAU Installation & Maintenance Manual
Mounting UNITY
Before mounting the DAU on the wall it is advisable to remove the cable knockouts. Decide
the best cable routes from the drawing below:
Speaker
Circuit A
Speaker
Circuit B
Safety
Earth
Connection
Mains
IN
Fire
Interface
Fire
Mic
Paging
Mic
Music
The Unity DAU weighs 8KGs with batteries, so care should be taken to securely mount the
unit on stud walling.
Connecting UNITY
To comply with EMC (Electro Magnetic Compatibility) regulations and to reduce the risk of electrical
interference in the system wiring, we recommend the use of fire-resistant screened cables throughout
the installation.
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,
fireman’s microphone, paging/background music equipment and slave amplifiers, please refer to the
relevant sections later in this manual.
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 BS5839-8 (1998), BS EN 60849
(1998) and BS 7671 (Wiring Regulations). Other national standards of installation should be adhered to
where applicable.
Do not test wiring with an insulation tester (Megger) with any equipment or speakers connected, as the
500 Volt test voltage will destroy these devices totally.
You must observe local wiring regulations. Do not run SELV and LV cables in the same enclosure
without adequate insulation between them.
Document DCC UND 7001-01 Rev 1 June 2005
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