System Sensor i3 Series Installation And Maintenance Instructions page 3

NOTE: Only one 2WTA-B detector shall be installed on a zone,
unless the panel switches the zone to a reverse polarity, non-cur-
rent limited power supply. For panels that do not provide this fea-
ture, a reversing relay, System Sensor model RRS-MOD, may be
used. When utilized with the 2WTA-B, 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 RRS-MOD. The 2WTA-B detector shall
not be mixed with other 2-wire detectors on the same zone.
Figure 3b: Wiring Diagram, 4WTR-B, 4WTA-B, 4WTAR-B, and
4WITAR-B
AUX OR
+
SMOKE
–
POWER
–
IDC
+
4-WIRE
CONTROL
PANEL
NOT INCLUDED ON
4WTA-B MODEL
OPTIONAL
RELEASING
DEVICE
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.
1. Wire the mounting base screw terminals per Figure 3a or
Figure 3b, as applicable.
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 beginning 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.
Testing
Detectors must be tested after installation and following
maintenance.
NOTE: Before testing, notify the proper authorities that mainte-
nance is being performed and the system will be temporarily out
of service. Disable the zone or system undergoing maintenance to
D100-99-00
EOL
RELAY
( A77-716B )
EOL
RESISTOR
NOT INCLUDED ON
4WTA-B MODEL
OPTIONAL
RELEASING
DEVICE
WARNING
CAUTION
prevent any unwanted alarms.
Ensure proper wiring and power is applied. After power up, allow
80 seconds for the detector to stabilize before testing.
Test i 3 Series detectors as follows:
A. Test Switch
1. An opening for the recessed test switch is located on the
detector housing (See Figure 4).
2. Insert a small screwdriver or allen wrench (0.18" max.) into
the test switch opening; push and hold.
3. If the detector is within the listed sensitivity limits, the
detector's red LED should light within one second.
Figure 4: Recessed Test Switch Opening and SENS-RDR
Position
RECESSED TEST SWITCH
B. Smoke Entry Test
Hold a smoldering punk stick or cotton wick at the side of the
detector and gently blow the smoke through the detector until
S0123-00
it alarms.
C. Direct Heat Method
Using a 1000-1500 watt hair dryer, direct the heat toward either
of the thermistors. Hold the heat source about 12 inches from
the detector to avoid damage to the plastic.
NOTE: For the above tests, the detector will reset only after the power
source has been momentarily interrupted. It is not necessary to reset
the model 4WITAR-B, when smoke is used to initiate the alarm.
When testing the 4WITAR-B model, pressing the test switch will
result in a non-latching local alarm that does not alarm at the con-
trol panel. Once the test button is released, the unit will return to its
standby condition. Only the fixed-temperature heat sensor will cause
the 4WITAR-B to initiate an alarm at the panel.
If a detector fails any of the above test methods, its wiring should be
checked and it should be cleaned as outlined in the Maintenance
section. If the detector still fails, it should be replaced.
Notify the proper authorities when the system is back in service.
Loop Verification (models 2WTR-B and 2WTA-B only)
Loop verification is provided by the EZ Walk loop test feature.
This feature is for use with i
the i 3 Series 2W-MOD2 module only. The EZ Walk loop test veri-
fies the initiating loop wiring and provides visual status indica-
tion at each detector. Refer to System Sensor literature for further
information on the 2W-MOD2.
The 2W-MOD2 has replaced the previous model number 2W-
MOD. To ensure proper EZ Walk Test capabilities, do not use the
2W-MOD with i 3
3
POSITION SENS-RDR
AT AN ANGLE ON THE
OVAL AREA OR AT THE
CHAMBER OPENING
BY THE WORD "PAINT"
LED
3 Series compatible control panels or
WARNING
model numbers 2WTR-B and 2WTA-B.
PUSH RECESSED
SWITCH WITH
A 0.18" MAX.
DIAMETER TOOL
S0110-00
I56-2170-04R