SS-500-003 1 I56-3747-001R
i
4
Series Combination Carbon
Monoxide(CO)/Photoelectric Smoke Detector
COSMO-2W (2-wire) and COSMO-4W (4-wire)
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6583
www.systemsensor.com
Notice: This manual shall be left with the owner/user of this equipment.
BEFORE INSTALLATION
Please read this manual thoroughly along with manual I56-3871 for the i
4
series interface module and the Application Guides for System Sensor Smoke
(A05-1003) and CO Detectors (A05-1099), which provide detailed information
on detector spacing, placement, zoning, wiring, and special applications. Cop-
ies of these manuals are available at systemsensor.com.
IMPORTANT: This detector must be tested and maintained regularly following
NFPA 72/NFPA 720 requirements. At a minimum, cleaning and
testing should be performed annually.
GENERAL DESCRIPTION
The i
4
series is a plug-in, system-connected, combination carbon monoxide/
smoke detector. It is available in either a 2-wire or 4-wire configuration. The i
4
series detectors must be used with the corresponding i
4
series Interface Mod-
ule to connect to the panel. The i
4
interface module is also compatible with i
3
series smoke detector model 2WTA-B or 4WTA-B.
FEATURES
Smoke Features
• Photoelectric smoke sensor
• Drift compensation and noise rejection algorithms
• Red smoke LED indicator
• Smoke test switch
CO Features
• Field replaceable, electrochemical CO sensor
• RealTest® functional test capable
• Blue CO LED indicator
• Sensor end-of-life notification
Audible Annunciation
• Local integral sounder
• Polarity reversal
Installation and Maintenance
• Stop-Drop-N-Lock plug-in base
• SEMS wiring terminals
• COSMO-2W designed for 2-wire i
4
Zone type
• COSMO-4W designed for 4-wire i
4
Zone type
• SENS-RDR sensitivity reader compatible with extended range
• Removable cover for cleaning
• Replaceable screen
Other Features
• Green supervisory LED
• Listed to UL standards 268 and 2075
VISIBLE ANNUNCIATON
The i
4
series detector has three visible LED’s; Green, Red and Blue. The green
LED is a supervisory LED; it blinks during power on, reset, and during normal
operation.
It is extinguished during smoke maintenance, CO trouble, smoke
SPECIFICATIONS COSMO-2W COSMO-4W
Electrical Specifications Physical Spcecificaitons
System Voltage: 12/24 volts DC 12/24 volts DC Operating Temperature Range: 0 - 50° C (32 - 122° F)
Min: 8.5 volts 8.5 volts Operating Humidity Range: 20-95% RH
Max: 35 volts 35 volts Storage Temperature Range: -10 - 70° C (14 - 158° F)
Max Startup Current: 200uA 200uA Diameter: 5.5 inches
Max Standby Current: 50uA 50uA Height: 2.5 inches
Max Alarm Current: 50mA 40mA Weight: 9.2 oz; 261 g
Max Reverse Polarity Current: 20mA 20mA Wire Gauge Acceptance: Min: 22 AWG
Max: 14 AWG
Audible Signal (Supplemental*): 85dBA 85dBA 2-Wire Compatibility Zone Identifier: A
Max Start-up Capacitance: .10uF .10uF
*NFPA requires a UL listed sounder on the NAC circuit
I56-3747-001R
alarm and CO alarm events. The red LED signals smoke events; it blinks dur-
ing smoke maintenance events and lights constantly during smoke alarm
events.
The blue LED signals CO events; it blinks blue during CO trouble or
CO end-of-life; it blinks rapidly during RealTest®; and lights constant during
CO alarm.
TABLE 1:
OPERATION MODES
OPERATION
MODE
GREEN
LED
RED LED BLUE LED SOUNDER
Normal (standby) Blink 5 Sec. OFF OFF OFF
Alarm Smoke OFF ON OFF Temp 3
Alarm CO OFF OFF ON Temp 4
Alarm Smoke & CO OFF ON ON Temp 3
RealTest® Mode OFF OFF Blink 1 Sec. OFF
(After CO is Sprayed) OFF OFF ON Temp 4
Trouble feature: When the sensor (supervision) is in a trouble condition
(such as a detector that is dirty), the detector will send a trouble signal to the
module then to the FACP. Depending on the issue, the detector must then be
serviced or replaced.
CO sensor end-of-life timer feature: When the CO sensor has passed end-of-
life, a trouble signal will be sent to the module then to the FACP. This indicates
that the CO sensor inside the detector must be replaced.
If unresolved for 30
days, the detector will chirp intermittently.
The typical life of the CO sensor
is six years from the date of manufacture; it is recommended to periodically
check the “Replace by” sticker located on the replaceable CO cell.
INSTALLATION GUIDELINES
Ceiling: Detector should be at least 12 inches from any wall.
Wall: Detector should be no closer than 6 inches from ceiling.
• Do not install outdoors or in any environment that does not comply with
the detector’s environmental specifications
• Install in accordance with NFPA 72 and 720 standards.
NFPA 72 and
720 define standards for both commercial and residential installation of
smoke and CO detectors. State and local laws involving CO detection
should also be considered.
• If the installation can be interpreted as residential, consult the section
of NFPA 720 that outlines residential applications.
Chapter 9.4.1.1, for
example, states that carbon monoxide alarms or detectors shall be in-
stalled as follows:
• Outside each separate dwelling unit sleeping area in the immediate
vicinity of the bedroom
• On every level of a dwelling unit, including basements
• Consult NFPA 72, the local Authority Having Jurisdiction (AHJ), and/
or applicable codes for specific information regarding the spacing and
placement of smoke detectors.
• Do not install detectors in the following areas:
• In or near areas where particles of combustion are normally present such as
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