System Sensor i3 Series User Manual

D100-99-00 3 I56-2170-04R
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
+
+
–
–
(
5
)
A
(
4
)
A
(
3
)
– IN/OUT
(
2
)
+ OUT
(
1
)
+ IN
EOL
RELAY
(
A77-716B
)
EOL
RESISTOR
(
5
)
A
(
4
)
A
(
3
)
– IN/OUT
(
2
)
+ OUT
(
1
)
+ IN
NOT INCLUDED ON
4WTA-B MODEL
NOT INCLUDED ON
4WTA-B MODEL
OPTIONAL
RELEASING
DEVICE
(6) NC (7) C (8) NO
OPTIONAL
RELEASING
DEVICE
(6) NC (7) C (8) NO
Installation
WARNING
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.
CAUTION
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
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
LED
RECESSED TEST SWITC
H
POSITION SENS-RDR
AT
AN ANGLE ON THE
OVAL AREA OR AT THE
CHAMBER OPENIN
G
BY
THE WORD “PAINT”
PUSH RECESSED
SWITCH WITH
A
0.18″ MAX.
DIAMETER
TOOL
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
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
3
Series compatible control panels or
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.
WARNING
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
model numbers 2WTR-B and 2WTA-B.
S0123-00
S0110-00

System Sensor i3 Series Specifications

General

Brand	System Sensor
Model	i3 Series
Category	Smoke Alarm
Language	English

Summary

Installation and Maintenance Instructions

Before Installing

Read System Sensor Application Guide and general information on detector spacing, placement, zoning, wiring, and applications.

Important Maintenance Requirements

Detector must be tested and maintained regularly following NFPA 72; annual cleaning is a minimum requirement.

General Description of i3 Series Detectors

Details 2-wire and 4-wire photoelectric smoke detectors, their optical sensing, microprocessor, thermal detection, and freeze condition sensing.

2W-MOD2 Compatibility Warning

Warning regarding the use of 2W-MOD2 with specific i3 models and the replacement of the 2W-MOD.

Detector Status LED Indicators

Explains the function of the green and red LEDs for power-up, normal, sensitivity, freeze, and alarm states.

Power-up Sequence and LED Status

Details the LED indications and duration during the detector's power-up sequence, including for electrical noise.

Detector LED Status After Power-Up

Sensitivity Measurement Tool

Recommends the i3 Series Model SENS-RDR Infrared Sensitivity Reader tool for measuring detector sensitivity.

Mounting Guidelines

Provides general spacing guidelines and options for mounting the detector base to various electrical boxes or direct mount.

Tamper-Resistant Feature

Explains how to engage and disengage the tamper-resistant feature using a plastic tab and screwdriver.

Wiring Installation Guidelines

Covers compliance with codes, wire gauges, color-coding, conduit usage, and terminal screw connections.

Two-Wire Compatibility and Limitations

Details compatibility for 2WTR-B/2WTA-B models with compatible panels and notes on initiating circuits.

Wiring Diagrams Overview

References wiring diagrams for 2WTR-B/2WTA-B and 4-wire models, noting specific model exclusions.

Detector Installation Steps

2-Wire Detector Zone Limitations

Explains limitations for 2WTA-B detectors on a zone and the use of the RRS-MOD for multiple detectors.

Dust Cover Usage Caution

Advises on the limitations of dust covers during construction and recommends detector removal.

Detector Testing Procedures

Outlines testing methods including the test switch, smoke entry, and direct heat, and reset requirements.

Loop Verification for 2-Wire Models

Explains Loop Verification using EZ Walk feature for 2WTR-B/2WTA-B models with compatible panels or 2W-MOD2.

Maintenance Procedures

EZ Walk Test Detector Modes

Details the LED modes for proper operation, out of sensitivity, and freeze condition during EZ Walk testing.

Detector Cleaning Steps

Provides step-by-step instructions for removing the cover, vacuuming, and reassembling the sensing chamber.

Electrical and Physical Specifications

Lists voltage, current, capacitance, response times, and physical dimensions for the detectors.

Three-Year Limited Warranty

Details the warranty terms, limitations, and procedures for returning defective units.

FCC Statement and Compliance

States FCC compliance, conditions for operation, and measures to correct radio frequency interference.