Smoke Detectors - Honeywell ADEMCO VISTA-12A Installation And Setup Manual

Smoke Detectors

4-Wire Smoke Detectors
Connect 4-wire smoke detectors (up to 16,
depending on detector current drain) to any
zone from 2-8 as shown on the next page. This
control does not automatically reset power to
4-wire smoke detector zones, so you must use a
relay (e.g., 4204, 4229), or on-board trigger 17
to reset power (also required for fire
verification). Do this by programming the
designated relay/trigger as zone type 54 (fire
zone reset); see On-Board Trigger section for
other information.
PROGRAM OUTPUT 17
LOW" = YES IN
MODE AND AS ZONE
Figure 6. 4-Wire Smoke Detector Connections
+ 5
RELAY
PROGRAM
AUX PWR
RELAY
OUTPUT AS ZONE
TYPE 54
TERMINALS
(FIRE ZONE
RESET)
_
4
N.C.
CONTACT OPENS
MOMENTARILY UPON
+
FIRE ALARM RESET
4-WIRE SMOKE
OR COMBUSTION
DETECTOR
TO ZONE TERM. ( ) +
HEAT
DETECTOR
_
TO ZONE TERM. ( )
4-Wire Smoke Detector Using Relay for Power Reset
( ) +
AUX PWR 5
_
TO OUTPUT 17 ( )
FOR "OUT NORM
79 MENU
+
TYPE 54 IN 4-WIRE SMOKE
OR COMBUSTION
80 MENU MODE
DETECTOR
TO ZONE TERM. ( ) +
HEAT
DETECTOR
_
TO ZONE TERM. ( )
4-Wire Smoke Detector Using Output 17 for Power Reset
Mounting and Wiring the Control
Notes
• • • •
Fire Verification (zone type 16): The control
panel will "verify" a fire alarm by resetting the
smoke detectors after the first alarm trigger,
and then waiting 90 seconds for a second
alarm trigger. If the smoke detector does not
trigger again, the control will disregard the
first trigger, and no alarm signal will occur.
This feature eliminates false alarms from
smoke detectors due to electrical or physical
transients.
•
Maximum current for trigger 17 output for 4-
wire smoke detectors is 300mA.
_
BLK + RED
EOL
POWER
N.O. SUPERVISION
RELAY MODULE
A77-716B.
USE N.O.
CONTACT,
_
VIOLET WHICH CLOSES
WHEN POWER
IS APPLIED.
2000
OHMS
EOLR
_
BLK + RED
EOL
POWER
SUPERVISION
N.O.
_
RELAY MODULE
VIOLET A77-716B.
USE N.O.
2000 CONTACT,
OHMS WHICH CLOSES
WHEN POWER
EOLR
IS APPLIED.
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