Cooper DF6000 Bedienungsanleitung PDF herunterladen (Seite 32)

DF6000 - USER MANUAL

External Connections (Mains Supply)

The mains supply should be installed in accordance with the current edition of the IEE wiring regulations.

Connection to the mains supply must be via an isolating device (e.g. an isolating fuse rated at 3Amps

maximum) reserved solely for the ﬁre alarm system. The cover should be coloured red and labelled “FIRE

ALARM - DO NOT SWITCH OFF”. The isolating protective device should be secure from unauthorised

operation and ideally installed in a securely closed box with a breakable cover.

An additional warning label should be provided, depending on whether:

1. The isolating protective device is fed from the live side of the main isolating device in which case the

label on the isolating protective device, should read in addition - “WARNING: THIS SUPPLY REMAINS

ALIVE WHEN THE MAIN SWITCH IS TURNED OFF”. A further label should be placed on the main

isolating device reading “WARNING: THE FIRE ALARM SUPPLY REMAINS LIVE WHEN THIS SWITCH

IS TURNED OFF.

2. If the isolating protective device is fed from the dead side of the main isolating device, a label should

be ﬁxed to the main isolating device reading “WARNING: THIS SWITCH ALSO CONTROLS THE

SUPPLY TO THE FIRE ALARM SYSTEM”.

Distributed Power Supplies

The above also applies to any distributed power supply (i.e. mains connections for DF6000/PR repeat

units MPU424 relay units, etc.)

Cable Segregation

All cables for the ﬁre alarm system should be segregated from any other cables/wiring/services.

Wiring conﬁgurations

Spurs can be taken off the loop in the following ways:

1. MIU871 Addressable Interface - Allows up to 20 conventional smoke detectors and unlimited FX201 /

203 callpoints.

2. Direct Loop Spur Wiring - Allows a zone of analogue detectors and callpoints to be directly spurred off

the loop

Note: The mains cable tail ends must be insulated to prevent dangerous conditions arising in the event

of accidental switching on of the mains supply.

Section 1 - System Installation and Design

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Cooper DF6000 Bedienungsanleitung Seite 32