Hardwire Zones And Zone Expansion; Hardwire Zones; Double-Balanced Zones; Zone Doubling - Honeywell ADEMCO VISTA Series Installation And Setup Manual

VISTA-15P/20P/SIA Installation and Setup Guide
Mounting and Wiring the Control (Continued)

Hardwire Zones and Zone Expansion

Hardwire Zones

Double-Balanced Zones

(V20P only)

Zone Doubling

(V20P only)

Smoke Detectors

Normally Open Zones/ N.O. EOLR Zones
1. Connect open circuit devices in parallel across the loop; for EOLR zones, connect the
EOLR across the loop wires at the last device.
2. Enable normally open/EOLR zones using Zone Programming mode, "Hardwire Type"
prompt.
Normally Closed Zones/ N.C. EOLR Zones
1. Connect closed circuit devices in series in the high (+) side of the loop; for EOLR zones,
connect the EOLR in series following the last device.
2. Enable normally closed/EOLR zones using Zone Programming mode, "Hardwire Type"
prompt.
End of Line Resistor (EOLR) Notes
 If the EOLR is not at the end of the loop, the zone is not properly supervised and the
system may not respond to an "open" on the zone.
 Zone 1 is intended for EOLR only.
UL
For UL commercial burglar alarm installations, use EOLR zones.
Connect as shown below (resistor provided for
one device).
IMPORTANT: Double-balanced zones provide
zone tamper protection, and should be used as
burglary zones only.
Do not use double-balanced zones as fire
zones.
This feature provides two hardwired normally
closed zones for each standard hardwired zone
connected to the control's terminals (but does
not increase the total number of zones
supported by the control). If enabled (Zone
Programming mode, "Hardwire Type" prompt,
option "3"), hardwire zones are automatically
paired as shown in the table. Connect as
shown (resistors supplied; use 3k and 6.2k 5%,
1/4W or bigger resistors).
 Do not use zone doubling for fire zones.
NOTE: A short across the EOL (i.e., at
terminal) on either zone of a zone-doubled pair
or on a double-balanced zone causes a tamper
condition (displayed as CHECK plus zone
numbers).
1. Connect up to 16 (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.
3. Connect 4-wire smoke detectors (number of detectors depends on detector current draw)
to any zone from 2-8 as shown in Figures 9a and 9b (on next page).
Power Reset: 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.
Fig. 7. Typical Double Balanced Zones
Fig. 8. Typical Zone Doubling Wiring
Zone Doubling Table
Zone
2
3
4
5
6
7
8
NOTE: Zone numbers used for zone doubling
cannot be used for anything else (ex. cannot
be used for 4219 zones)
8
Paired with zone
10
11
12
13
14
15
16