C-TEC AVAC User Manual

A
VAC VOICE ALARM SYSTEM
AVAC Installation and Maintenance Manual • Approved Document No. DAU0000402 Rev 6 • Page 22
CLASS CHANGE TIMER CONNECTION
If required, the AVAC’s BGM input can also be used to provide a ‘class change’ function for
schools, colleges, etc.
To utilise this feature you will need a TPG5 tone pulse generator with chime and a TU16
programmable seven day, multiple event timer unit. These should be connected to the AVAC’s
BGM input directly or via an outreach plate, as shown in the diagram below. Refer to to page
21 for additional information on how the BGM input works.
Class Change timer connection
TU16
N
C C NO
NC C NO
NC C NO
230 VAC
50 HZ
Tone 5
NC
C
NO
N
C
C
NO
Tone 4
T
one 3
T
one 2
Tone 1
Sig
O
ut
TPG5
230 VAC
50 HZ
To AVAC
or previous
O
utreach plate
DC
power
unused
Belden 8723
s
creened
2-pair twisted
cable or similar
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