Smoke Detectors - ADEMCO VISTA-20PS Series Installation And Setup Manual

Smoke Detectors

2-Wire Smoke Detectors
1. Connect up to sixteen (10, if "clean me" option used)
2-wire smoke detectors across zone 1 terminals 8 (+)
and 9 (-) as shown in the Summary of Connections
diagram at the back this manual. Observe proper
polarity when connecting the detectors.
2. Connect an EOL resistor across the loop wires at the
last detector.
4-Wire Smoke Detectors
3. Connect 4-wire smoke detectors (up to 16, depending
on detector current draw) to any zone from 2-8 as
shown below.
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 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.
NOTE: Maximum current on trigger 17 is 100mA.
TERMINALS
LOW" = YES IN
Figure 7. 4-Wire Smoke Detector Connections
+ 5
RELAY
PROGRAM
AUX PWR
RELAY
OUTPUT AS ZONE
TYPE 54
(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 ( )
PROGRAM OUTPUT 17
FOR "OUT NORM
79 MENU
MODE AND AS ZONE
TYPE 54 IN
4-WIRE SMOKE
OR COMBUSTION
80 MENU MODE
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 or thermostat does
not trigger again, the control will disregard the
first trigger, and no alarm signal will occur. This
feature eliminates false alarms due to electrical
or physical transients.
SIA Installations: If using fire verification on
zones other than zone 1, UL Fire Alarm Listed
relay accessories must be used to reset power as
described in step 3.
• The zone 1 alarm current supports only one
smoke detector in the alarmed state.
• Clean Me Option: If enabled (field *174 = 1;
*56 zone programming, response time prompt =
3), certain ESL smoke detectors
reports as appropriate. If used, the maximum
number of detectors is reduced to 10 (not
standard 16).
• Do not use 4-wire smoke detectors on zone 1.
† Refer to the ESL documentation included with
the smoke detector for information regarding
compatibility with the clean-me option.
_
BLK + RED
N.O.
+
_
VIOLET
2000
OHMS
EOLR
_
BLK + RED
N.O.
+
_
VIOLET
DETECTOR
2000
OHMS
EOLR
†
send "clean me"
EOL
POWER
SUPERVISION
RELAY MODULE
A77-716B.
USE N.O.
CONTACT,
WHICH CLOSES
WHEN POWER
IS APPLIED.
EOL
POWER
SUPERVISION
RELAY MODULE
A77-716B.
USE N.O.
CONTACT,
WHICH CLOSES
WHEN POWER
IS APPLIED.
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