System Sensor i3 Series Installation And Maintenance Instructions page 2

Figure 1: Mounting of Detector
The i 3 Series heads and bases are keyed so that all heads will only fit into their
respective bases. One model 4-wire relay base will accept the C4WTR-BA,
C4WTAR-BA and C4WITAR-BA detector heads and no others. The C2WTR-BA,
C2WTA-BA and C4WTA-BA will only fit into their respective mounting bases
and no others. The heads and bases are clearly identified as either 2-wire or
4-wire. When mounting the i 3 Series, ensure that the head is mounted to the
correct base, and the test switch is aligned with the tamper release tab.
Tamper-Resistant Feature
The i 3 Series detectors include a tamper-resistant feature that prevents re-
moval from the mounting base without the use of a tool. To engage the tam-
per-resistant feature, cut the small plastic tab located on the mounting base
(Figure 2), and then install the detector. To remove the detector from the base
once it has been made tamper resistant, use a small screwdriver to depress the
square tamper release tab, located on the skirt of the mounting base, and turn
the detector counterclockwise.
Installation Guidelines
The i 3 Series detectors represent an advancement over the previous sounder
and Form C relay models and are designed to be used with the C2W-MOD2A
and CRRS-MODA only. Do not mix detector models on a zone.
Figure 2: Tamper-Resistant Feature
SNAP OFF TAB FOR
TAMPER LOCK
TAMPER RELEASE TAB
Wiring Installation Guidelines
All wiring must be installed in compliance with the CAN/ULC S524, Canadian
Electrical Code, applicable state and local codes, and any special requirements
of the local Authority Having Jurisdiction.
Proper wire gauges should be used. The conductors used to connect smoke
detectors to the alarm control panel and accessory devices should be color-
coded to reduce the likelihood of wiring errors. Improper connections can
prevent a system from responding properly in the event of a fire.
The screw terminals in the mounting base will accept 14–22 gauge wire. For
best system performance, all wiring should be installed in separate grounded
conduit; do not mix fire alarm system wiring in the same conduit as any other
electrical wiring. Twisted pair may be used to provide additional protection
against extraneous electrical interference.
Wire connections are made by stripping approximately 1⁄4-inch of insulation
from the end of the feed wire, inserting it into the proper base terminal, and
tightening the screw to secure the wire in place. Do not put wires more than 2
gauge apart under the same clamping plate.
Two-Wire Compatibility
System Sensor two-wire smoke detectors are marked with a compatibility
identifier located on the label on the back of the product. For two-wire mod-
els C2WTR-BA and C2WTA-BA, connect detectors only to compatible alarm
control panels as identified by System Sensor's two-wire compatibility chart,
available at www.systemsensor.ca.
NOTE: Models C2WTR-BA and C2WTA-BA are not to be installed on initiating
circuits containing other makes/models of smoke detectors.
NOTE: Style D initiating circuits require the use of a C2W-MOD2A for models
C2WTR-BA and C2WTA-BA
S0121-00
DIRECT MOUNT HOLES
S0109-00
Wiring Diagrams
Figure 3a: Wiring Diagram, C2WTR-BA and C2WTA-BA
EOL
RESISTOR
2-WIRE
ZONE
RA400Z
–
+
2-WIRE
CONTROL
PANEL
NOTE: ONLY ONE C2WTR-BA DETECTOR PER ZONE CAN BE USED.
NOTE: Only one C2WTA-BA detector shall be installed on a zone, unless the
panel switches the zone to a reverse polarity, non-current limited power sup-
ply. For panels that do not provide this feature, a reversing relay, System Sen-
sor model CRRS-MODA, may be used. When utilized with the C2WTA-BA, it
allows for more than one detector to be utilized on a loop. Some panels may
require the use of programmable outputs. Refer to System Sensor literature for
further information on the CRRS-MODA. The C2WTA-BA detector shall not be
mixed with other 2-wire detectors on the same zone.
Figure 3b. Wiring Diagram, C4WTR-BA, C4WTA-BA, C4WTAR-BA, and
C4WITAR-BA
AUX OR
+
SMOKE
–
POWER
–
IDC
+
4-WIRE
CONTROL
PANEL
NOT INCLUDED ON
C4WTA-BA MODEL
OPTIONAL
RELEASING
DEVICE
Installation
Remove power from alarm control unit or initiating device circuits before in-
stalling detectors.
NOTE: To install units so that corresponding LEDs are lined up, refer to the
"Green LED" indicator on the base.
1. Wire the mounting base screw terminals per Figure 3a or Figure 3b, as ap-
plicable
2. Place detector on the base and rotate clockwise. The detector will drop into
the base and lock into place with a "click".
3. After all detectors have been installed, apply power to the alarm control
unit.
4. Test each detector as described in Testing.
5. Reset all the detectors at the alarm control unit.
6. Notify the proper authorities that the system is in operation.
Dust covers are an effective way to limit the entry of dust into
the smoke detector sensing chamber during construction. However, they may
not completely prevent airborne dust particles from entering the detector.
Therefore, System Sensor recommends the removal of detectors before begin-
ning construction or other dust producing activity. When returning the system
to service, be sure to remove the dust covers from any detectors that were left
in place during construction.
2
( 5 ) RA –
(6) NC
( 4 ) RA +
OPTIONAL
(7) C
( 3 ) – IN/OUT RELEASING
(8) NO
DEVICE
( 2 ) + OUT
( 1 ) + IN
NOT INCLUDED ON
2WTA-B MODEL
EOL
RELAY
(A77-716B)
EOL
RESISTOR
NOT INCLUDED ON
C4WTA-BA MODEL
OPTIONAL
RELEASING
DEVICE
S0123-00CDN
WARNING
CAUTION
I56-2431-004
S0122-00
7/2/2019