Installation
The batteries are supplied in a separate pack.
Spare Parts packages Qty
Fuse 3.15A AS Ceramic
(20mm x 5mm)
1
Fuse 3.15A QB Glass
(20mm x 5mm)
1
Resistor 5.6K 0.6W 4
Resistor 470R 0.6W 8
Resistor 10K 0.5W 4
Battery Link 1
Battery Lead 1
Capacitor 22uF 35V 4
Instructions 1
keys are supplied in a plastic bag fitted to
the enclosure.
Cable termination
Mains supply
The mains supply cable must be a standard fire resisting
type and should meet PH30 classification, such as any
of the standard and enhanced loop cable. Requires a
minimum conductor cross sectional area of 0.75mm
2
.
&
Ensure that the mains supply cable enters the
enclosure through a dedicated cable entry, located
adjacent to the mains terminal block and that is also
segregated from loop wiring.
"
These fire alarm system products are not
designed to be powered from IT Power systems.
All mains powered equipment must be earthed. Mains
supply to any fire alarm control and indicating equipment
must be via an unswitched 5A fused spur unit. A
disconnect device must be provided to disconnect both
poles and must have a minimum gap of 3mm. The
disconnect device should be available as part of the
building installation and must be easily accessible after
installation is complete.
Wiring test
&
DO NOT undertake high voltage insulation
tests WITH THE CABLES CONNECTED to the Mains
Interface unit and external equipment. Such a test
may damage the electronics circuitry in external
equipment and in the Mains Interface unit.
4188-968 issue 2_Part 1_09-10_S4 mains interface 3
S4 Mains powered interface unit Data and Installation
MICC CABLE
GLAND
BRASS
LOCKNUT
ZINC PLATED
LOCK WASHER
BOARD
TERMINALS
MICC CABLE
GLAND
BRASS
LOCKNUT
ZINC PLATED
LOCK WASHER
BOARD
TERMINALS
PANEL
enclosure
MICC
CABLE TERMINATION
GLAND
Softskin Cable
GLAND
CABLE TERMINATION
Softskin (Fire Tuf)
EARTH DRAIN
WIRE Should
not be more than
50mm long and
must be sleeved
BOARD
TERMINALS
BOARD
TERMINALS
PANEL
enclosure
Dedicated mains supply
from consumer unit
5A Unswitched
Fused spur unit
Ensure the mains supply remains
isolated until system commissioning
stage when the unit is powered up.
Mains Interface Backbox
N
L
PE
FS3
3.15A(T)
mains fuse
Disconnect Device
Minimum gap 3mm
www.acornfiresecurity.com
www.acornfiresecurity.com
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