C-TEC AVAC User Manual

A
VAC VOICE ALARM SYSTEM
AVAC Installation and Maintenance Manual • Approved Document No. DAU0000402 Rev 6 • Page 14
We recommend two new, good quality and fully charged 7 AHr 12 V valve regulated lead acid
batteries are used as the AVAC’s emergency stand-by power supply. These will typically
provide at least 24 hours standby time and 30 minutes alarm running time.
Note that batteries are required at
all AVAC masters and slaves.
C
aution: No other type of battery should be used due to risk of explosion and smaller batteries
will reduce the standby time of the system considerably.
The batteries should be connected in series and located in the enclosure as shown in the dia-
g
ram below. The battery leads and link wire are provided in the accessory pack.
A
sophisticated battery monitoring unit protects the batteries against deep discharge by acti-
vating a cut off circuit when the stand-by supply voltage reaches 21 V approx. If batteries are
not fitted, are discharged or in poor condition, a PSU fault will show at the AVAC.
Always dispose of used batteries accor
ding to the battery manufacturer’s instructions.
STANDBY BATTERY CONNECTION
KEEP THIS
AREA CLEAR
TO ENSURE
THE AMPLIFIER
IS WELL
VENTILATED
POSITION BATTERIES HERE
(TERMINALS FACING UP)
+
–
–
+
CONN4
–
+
12V 7AHr
VRSLA
12V 7AHr
VRSLA
POWER
SUPPLY
PCB
!
KEEP THIS
AREA CLEAR
TO ENSURE
THE AMPLIFIER
IS WELL
VENTILATED
POSITION BATTERIES HERE
(TERMINALS FACING UP)
+
–
–
+
CONN4
–
+
12V 7AHr
VRSLA
12V 7AHr
VRSLA
POWER
SUPPLY
PCB
!
Standby battery location and connection
www.acornfiresecurity.com
www.acornfiresecurity.com

C-TEC AVAC Specifications

Power Supply and Charger

AC input	230 V a.c +/- 10% 50/60 Hz
Internal power supply	27 V d.c. Nominal
Max continuous output current	5A @ 230 V a.c.
Pulse peak output current	7A @ 230 V a.c.
Battery size and type	2 x 12 V 7 AHr VRLA connected in series
Max Battery Charge current	0.5 A

Inputs

BGM input level	230 mV RMS
BGM with link input level	2.3 V RMS
Page input level	230 mV RMS
Page with link input level	2.3 V RMS
Fire Mic input level	230 mV RMS

Outputs

Max Output AUX 24 V	100 mA
Max Output Fire Mic 24 V	100 mA
Max Speaker Output	100 V 0.6 A RMS (60 W) x 2
Output power	2 x 60 W continuous average power
Frequency response at 30 W load	152 Hz to 12 kHz

Battery Calculations

Average standby current at full load	97 mA
Average alarm current at full load	1.2 A
Loudspeaker Monitoring Tone	20 kHz
Frequency response on Page and BGM	220 Hz to 6.2 kHz