Discovery ASD-1 Product Guide
Apollo Fire Detectors
10
www.apollo-fire.co.uk
Fault 2
Loop In Loop Out
+ - + -
1
2
3
4
5
6
+
-
Loop
In
+
-
Loop
Out
20K Resistor
External PSU Input
+
-
L1
L2
APOLLO
55000-70
MODULE
Loop In
+
-
1
2
Figure 3-1: Field connectors for the Discovery ASD-1 detector
3.3
Battery Terminal
Figure 3-2: Ferrite core and battery supply wiring
The Discovery ASD-1 unit is designed to run from a 24 VDC supply. The supply should be connected to the
two way BATTERY connector on the main circuit board ensuring that the wires are correctly orientated. The
minimum recommended wire size is 16 x 0.25 mm (18 AWG), or larger if the supply is further than 5 m (16.4 ft)
from the system.
A ferrite core is provided for EMC compliance. This should be fitted to the supply wiring as shown in
Figure 3-2.
The power requirements are dependant on the fan speed. Refer to Section 10.1 on page 25.
