Sounder (Siren) Connections; Wiring The Ac Transformer - Honeywell Ademco Vista-48LA Installation And Setup Manual

Installation Instructions

Sounder (Siren) Connections

1. Make sounder connections to alarm output terminals 3
(+) and 4 (–).
For supervised output, continue with steps 2 and 3.
2. Cut the red Siren Supervision Jumper located above
terminals 2 and 3 on the control board.
3. Connect a 2k ohm resistor across the terminals of the
last sounder.
TERMINALS ON
CONTROL BOARD
4
ALARM
OUTPUT
TERMINALS
3
2
CUT RED JUMPER ON CONTROL
BOARD TO ENABLE SIREN
(SOUNDER) SUPERVISION.
Figure 5. Sounder Wiring (Supervised)

Wiring the AC Transformer

Transformer:
Connect the Transformer to terminals 1 and 2 on the
control board. See wiring table at right for wire size to
use.
Use wired-in or plug-in 110 (e.g. 1321)/220VAC
transformer, with 16.5VAC, 25VA output.
2-4
EXTERNAL ALARM
SOUNDER
_
_
OBSERVE
POLARITY
+
+
IF SIREN SUPERVISION IS ENABLED
(RED JUMPER ON CONTROL BOARD IS CUT)
CONNECT A 2000 OHM RESISTOR ACROSS
THE EXTERNAL SOUNDER AS SHOWN BY
THE DOTTED LINE.
DO NOT CONNECT THE RESISTOR AT THE
ALARM OUTPUT TERMINALS THEMSELVES!
Notes
• The 12VDC sounder output activates when an
alarm occurs.
• Total current drain from this output cannot
exceed 2 amps (going beyond 2 amps will
overload the power supply, or may cause the
electronic circuit protecting the sounder output
to activate).
• You must install a battery, since the battery
supplies this current.
• Do NOT perform steps 2 and 3 if using a self-
activated siren.
2000
OHM
EOL
RESISTOR
Notes
• Use caution when wiring the transformer to the
control to guard against blowing the transformer
fuse (the fuse is non-replaceable).
• Wiring to the AC transformer must not exceed
76m using 1.2mm O.D. wire. The voltage
reading between terminals 1 and 2 of the
control must not fall below 16.5VAC or an "AC
LOSS" message will be displayed.
• Do not connect to AC mains power while making
any wiring connections to the control. As a safety
precaution, always power down the control when
making such connections.
Wiring Table
Distance from control
Up to 15m
15-30m
30-76m
Wire Gauge
0.8mm O.D.
1.0mm O.D.
1.2mm O.D.