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4W-B Datasheet(PDF) 2 Page - Systemsensor advanced ideas.

Part No. 4W-B
Description  Photoelectric Smoke Detectors
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Maker  SYSTEMSENSOR [Systemsensor advanced ideas.]
Homepage  http://www.systemsensor.com
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 2 page
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3825 Ohio Avenue • St. Charles, IL 60174
Phone: 800-SENSOR2 • Fax: 630-377-6495
©2006 System Sensor.
Product specifications subject to change without notice. Visit systemsensor.com for
current product information, including the latest version of this data sheet.
A05-0318-006 • 7/06 • #1676
Ordering Information
Model
Thermal
Wiring
Alarm Current
2W-B
No
2-wire
130 mA max. limited by control panel
2WT-B
Yes
2-wire
130 mA max. limited by control panel
4W-B
No
4-wire
20 mA @ 12V, 23mA @ 24V
4WT-B
Yes
4-wire
20 mA @ 12V, 23mA @ 24V
Accessories
2W-MOD2
2-wire loop test / maintenance module
RT
Removal / replacement tool
SENS-RDR
Sensitivity reader
A77-AB2
Retrofit adapter bracket, 6.6 in. (16.76cm) diameter
Smoke Detector Specifications
Architectural/Engineering Specifications
Smoke detector shall be a System Sensor i3 Series model number_______, listed to Underwriters Laboratories UL 268 for Fire Protection Signaling Systems. The
detector shall be a photoelectric type (Model 2W-B, 4W-B) or a combination photoelectric/thermal (Model 2WT-B, 4WT-B) with thermal sensor rated at 135°F
(57.2°C). 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 pre-wiring of
the base and the head shall be a plug-in type. The detector shall have a nominal sensitivity of 2.5 percent-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 (Model 2WT-B, 4WT-B) 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.
Electrical Specifications
Operating Voltage
Nominal: 12/24V non-polarized
Minimum: 8.5V
Maximum: 35V
Maximum Ripple Voltage
30% peak to peak of applied voltage
Standby Current
2-wire: 50 µA maximum average; 4-wire: 50 µA maximum average
Maximum Alarm Current
2-wire: 130 mA limited by control panel; 4-wire: 20 mA @12V, 23mA @ 24V
Peak Standby Current
2-wire: 100 µA; 4-wire: n/a
Alarm Contact Ratings
2-wire: n/a; 4-wire: 0.5 A @ 30V AC/DC
Physical Specifications
Dimensions (including base)
5.3 inches (127 mm) diameter; 2.0 inches (51 mm) height
Weight
6.3 oz. (178 grams)
Operating Temperature Range
2W-B and 4W-B: 32°F–120°F (0°C–49°C); 2WT-B and 4WT-B: 32°F–100°F (0°C–37.8°C)
Operating Humidity Range
0 to 95% RH non-condensing
Thermal Sensor
135°F (57.2°C) fixed
Freeze Trouble
2WT-B and 4WT-B only: 41°F (5°C)
Sensitivity
2.5%/ft. nominal
Input Terminals
14–22 AWG
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
LED Modes
Power Up Sequence for LED Indication
LED Mode
Green LED
Red LED
Condition
Duration
Power up
Blink every 10 seconds
Blink every 10 seconds
Initial LED status indication
80 seconds
Normal (standby)
Blink every 5 seconds
off
Out of sensitivity
off
Blink every 5 seconds
Freeze trouble
off
Blink every 10 seconds
Alarm
off
Solid




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