SOUNDER AND RELAY SMOKE DETECTORS i SERIES

SOUNDER AND RELAY SMOKE DETECTORS i SERIES
SOUNDER AND RELAY SMOKE DETECTORS
i3 SERIES
Features
•
•
Description
The i3™ sounder and relay smoke detectors apply the
guiding principles of installation ease, intelligence, and
instant inspection in a series of specialty conventional
devices.
Installation ease
Throughout the i3 series, installation is simple with its
installer-friendly base and plug-in design. The base
accommodates a broad range of back box and direct
mounting options, and provides ample space for prewiring the installation. To complete the installation, the
i3 detector plugs into its base with a simple Stop Drop ’N
Lock action.
Intelligence
To reduce the likelihood of nuisance alarms, all i3
detectors are equipped with both drift compensation and
smoothing algorithms. These capabilities minimize both
short- and long-term causes of nuisance alarms such as
RF interference and dust accumulation. When connected
to the 2W-MOD2 loop test /maintenance module or an i3
Ready™ panel, 2-wire i3 detectors can generate a remote
maintenance signal when they are in a maintenance or
freeze trouble condition. To measure the sensitivity of any
i3 detector, the SENS-RDR displays the reading, in terms
of percent per foot obscuration, within seconds.
Instant inspection
The i3 line’s red and green LEDs simplify local status
indication during power-up, standby, alarm, maintenance
and freeze trouble conditions. When in alarm, i3 sounder
models generate an 85dB temporal tone. If connected to
the RRS-MOD reversing relay/synchronization module, all
i3 sounders on the loop will activate when one detector is in
alarm. Additionally, the RRS-MOD synchronizes the output
of all i3 sounders, to ensure a clear audible signal. Should
the application call for differentiating between a local and a
general alarm, the i3 line offers an isolated thermal model,
which initiates a local alarm when smoke is detected, and
a general alarm when the thermal sensor is activated.
Full line of options including:
- 85 dB sounder
- Form C relay
- Isolated thermal sensor
Maintains the i3 feature set including:
- Plug-in design
- Mounting base included
- In-line terminals
- Mounts to octagonal, single gang and 4-square
back boxes, or direct to the ceiling
- Stop-Drop ’N Lock ™ attachment to the base
- Removable cover and chamber
- Remote maintenance signaling
- Drift compensation and smoothing algorithms
- Simplified sensitivity measurement
- Dual color LEDs
- EZ Walk loop testing
Engineering Specifications
The smoke detector shall be an i3 Series model listed
to Underwriters Laboratories UL 268 for Fire Protection
Signaling Systems. The detector shall be a combination
photoelectric/thermal equipped with a sounder (model
2WTA-B, 4WTA-B), a Form C relay (model 2WTR-B),
a combination sounder/relay (model 4WTAR-B) or an
isolated thermal/sounder/relay (model 4WITAR-B). The
detector shall include a mounting base for mounting to
3½-inch and 4-inch octagonal, single gang, and 4-inch
square back boxes with a plaster ring, or direct mount to
the ceiling using drywall anchors.
Wiring connections shall be made by means of SEMS
screws. The detector shall allow prewiring of the base and
the head shall be a plug-in type. The detector shall have a
nominal sensitivity of 2.5% per foot nominal as measured
in the UL smoke box. The detector shall be capable of
automatically adjusting its sensitivity by means of drift
compensation and smoothing algorithms. The detector
shall provide dual color LED indication which blinks to
indicate power up, normal standby, out of sensitivity, alarm,
and freeze trouble conditions. When used in conjunction
with the 2W-MOD2 module, 2-wire models shall include a
maintenance signal to indicate the need for maintenance
at the alarm control panel, and shall provide a loop testing
capability to verify the circuit without testing each detector
individually. When used in conjunction with the RRS-MOD
module, all i3 sounder models on a loop shall sound when
one alarms, all shall be synchronized, and all sounders
may be silenced from the panel.
NOT TO BE USED FOR INSTALLATION PURPOSES.
APPROVED
CATALOG NUMBER
5148
Mircom reserves the right to make changes at any time without notice in prices, colours, materials, components, equipment, specifications and models and also to discontinue models.
Electrical Specifications
Maximum Alarm Current
2-wire: 130 mA limited by control panel
4-wire: 4WTA-B, 4WTR-B: 35 mA
4WTAR-B, 4WITAR-B: 50 mA
Peak Standby Current
2-wire: 100 μA
4-wire: n/a
Operating Voltage
Nominal: 12/24 V non-polarized
2-wire: 8.5 V - 35 V
4-wire: 10 V - 35 V
Alarm Contact Ratings
2-wire: n/a
4-wire: 0.5 A @ 30V AC/DC
Form C Contact Ratings
2A@ 30V AC/DC
Maximum Ripple Voltage
30% of applied (peak to peak)
Standby Current
2-wire: 50 μA maximum average
4-wire: 50 μA maximum average
Power Up Sequence for LED Indication
LED Modes
LED Mode
Green LED
Red LED
Condition
Duration
Initial LED status indication
80 seconds
Power up
Blink every 10 secs
Blink every 10 secs
Normal (standby)
Blink every 5 secs
off
Out of sensitivity
off
Blink every 5 secs
Freeze trouble
off
Blink every 10 secs
Alarm
off
Solid
Physical Specifications
Operating Temperature Range
32°F–100°F (0°C–37.8°C)
Sensitivity
2.5%/ft. nominal
Operating Humidity Range
0 to 95% RH non-condensing
Input Terminals
14–22 AWG
Thermal Sensor
135°F (57.2°C) fixed
Dimensions (including base)
5.3 inches (134 mm) diameter
2.0 inches (51 mm) height
Weight
7.1 oz. (200 grams)
Mounting
- 3½-inch octagonal back box
- 4-inch octagonal back box
- Single gang back box
- 4-inch square back box with a
plaster ring
- Direct mount to ceiling
Freeze Trouble
41°F (5°C)
Ordering Information
Model Number
2WTA-B
2WTR-B
4WTA-B
4WTR-B
4WTAR-B
4WITAR-B
Thermal
Yes
Yes
Yes
Yes
Yes
Yes
Wiring
2-wire
2-wire
4-wire
4-wire
4-wire
4-wire
Alarm Current
130 mA max. limited by control panel
130 mA max. limited by control panel
35 mA
35 mA
50 mA
50 mA
Accessories
RRS-MOD
2W-MOD2
SENS-RDR
A77-AB2
RT
i3 Series Reversing relay/synchronization module
i3 Series 2-wire loop test/maintenance module
i3 Series Sensitivity Reader
i3 Series Retrofit Adapter Bracket
i3 Series Removal/Replacement Tool
NOT TO BE USED FOR INSTALLATION PURPOSES.
Distributed by:
Canada
25 Interchange Way
Vaughan, Ontario L4K 5W3
Telephone: (905) 660-4655
Fax: (905) 660-4113
Web page: http://www.mircom.com
U.S.A.
4575 Witmer Industrial Estates
Niagara Falls, NY 14305
Toll Free: (888) 660-4655
Fax Toll Free: (888) 660-4113
Email: mail@mircom.com
CAT. 5148
Rev. 1
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