26-0981 Issue 2
General Description
The Sita Multipoint ASD detector base allows for the connection of Multipoint devices to the Sita loop. This base is
only compatible with the addressable Multipoint ASD detector for the Sita200plus, Duonet and Quadnet ranges of
control panels.
Before Installation
The detector must be installed in compliance with the control panel installation manual. The installation must also
meet the requirements of any local authority. For maximum performance the detector should be installed in
compliance to BS5839 Pt1 : 2002 + A2 : 2008.
Spacing
Fike recommends spacing detectors in accordance with BS5839 Pt1. Due to the effects of IR and possible
magnetic interference, detectors should not be fitted any closer than 500mm (preferably 1000mm) to a light fitting or
any other source of IR. In addition to this recommendation, the device should be mounted so that the indication LED
is facing towards the light source. For more specific information regarding detector spacing, placement and special
applications please refer to BS5839 Pt1 : 2002 + A2 : 2008.
Base Installation
All wiring must be installed in compliance with the recommendations laid out by BS5839 Pt1 : 2002 as well as any
special recommendations documented in the control panel installation manual.
The cabling used should be of a
2-core 1.5mm
2
screened, fire resistant type with the following characteristics:
Max Capacitance Core to Screen
.
.
.
.
180pf / m
Max Capacitance Core to Core .
.
.
.
100pf / m
Max Inductance .
.
.
.
.
.
1.0mH / Km
Max Resistance Two Core Screened 1.5mm²
.
.
12.1
Ώ
/ Km
It is to be wired in the form of a screened 2-core loop returning to the control panel. The use of spurs on
this system is not permitted.
Cables may be terminated into the connectors mounted in the base, as shown
below. Care should be taken when terminating devices to ensure all cables are correctly sleeved and connections
are secure. Improper connections will prevent a system from responding properly in the event of a fire.
Terminal
Description
1 / LOOP 0V
Loop –ve In & Out
(also Remote LED 0V)
2 / LOOP +IN
Loop +ve In
3 / LOOP +OUT
Loop +ve Out
4 / AUX +VE
Auxve
(also Remote LED +ve)
5 / AUX –VE
Auxiliary -ve
SCRN
Cable Screen
INSTALLATION AND MAINTENANCE INSTRUCTIONS
905-0001 Sita Multipoint ASD
Detector Base
1
2
3
4
5
S
R
N
C
