System Sensor i3 Series Installation And Maintenance Instructions page 2

4. Direct mount or to ceiling using drywall fasteners (Figure 2).
Figure 1: Mounting of Detector
The i 3 Series heads and bases are keyed so that a 2-wire head will only
mount to a 2-wire base, and a 4-wire head will only mount to a 4-wire
base. 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.
Tamper-Resistant Feature
The i 3 Series detectors include a tamper-resistant feature that prevents
removal from the mounting base without the use of a tool. To engage the
tamper-resistant feature, cut the small plastic tab located on the mount-
ing base (Figure 2), and then install the detector. To remove the detec-
tor 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.
Figure 2: Tamper-Resistant Feature
DIRECT MOUNT
HOLES
TAMPER
RELEASE TAB
Do NOT Install Detectors in the Following Areas:
• In or near areas where particles of combustion are normally present
such as kitchens; in garages (vehicle exhaust); near furnaces, hot
water heaters, or gas space heaters.
• In very cold or very hot areas.
• In wet or excessively humid areas, or next to bathrooms with show-
ers.
• In dusty, dirty, or insect-infested areas.
• Near fresh air inlets or returns or excessively drafty areas. Air con-
ditioners, heaters, fans, and fresh air intakes and returns can drive
smoke away from the detector.
Consult CAN/ULC S524, the local Authority Having Jurisdiction
(AHJ), and/or applicable codes for specific information regarding the
spacing and placement of smoke detectors.
Wiring Installation Guidelines
All wiring must be installed in compliance with the Canadian Electrical
Code, applicable state and local codes, and any special requirements of
the local Authority Having Jurisdiction.
D100-96-00
SNAP OFF TAB
FOR TAMPER LOCK
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 con-
duit 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
A78-2706-00
lation from the end of the feed wire, inserting it into the proper base
terminal, and tightening the screw to secure the wire in place.
Two-Wire Compatibility
System Sensor two-wire smoke detectors are marked with a compat-
ibility identifier located on the label on the back of the product. For
two-wire models C2W-BA and C2WT-BA, connect detectors only to
compatible alarm control panels. NOTE: Style D(Class A) initiating
circuits require the use of a C2W-MOD2A for models C2W-BA and
C2WT-BA.
Wiring Diagrams
Figure 3a: Wiring Diagram, C2W-BA and C2WT-BA
+
2-WIRE
ZONE –
2-WIRE
CONTROL
PANEL
Figure 3b: Wiring Diagram, C4W-BA and C4WT-BA
RESETTABLE
A78-2711-00
+
SMOKE
POWER
-
-
IDC
+
4-WIRE
CONTROL
PANEL
Installation
Remove power from alarm control unit or initiating device circuits
before installing detectors.
NOTE: To install units so that corresponding LEDs are lined up, refer
to the "Green LED" indicator on the base.
2
RA400ZA
C2W-BA or C2W-BA or
C2WT-BA C2WT-BA
C4W-BA or C4W-BA or
C4WT-BA C4WT-BA
WARNING
/ -inch of insu-
1
4
EOL
RESISTOR
RA400Z A
A78-2714-00
EOL
RELAY
( A77-716B )
EOL
RESISTOR
A78-2715-00
I56-2208-002