Edwards Signaling SafeAir 250-CO User manual

Page 1 of 4 DATA SHEET S85001-0618
Not to be used for installation purposes. Issue 4
Edwards Signaling Catalog uConventional Initiating
Overview
The SafeAirTM 250-CO carbon monoxide (CO) detector is an accu-
rate and reliable means of alerting building occupants of potentially
dangerous levels of CO in the protected area. The internal electro-
chemical sensor communicates with a sophisticated on-board
microprocessor that accurately tracks CO levels over time.
This commercial-grade detection technology results in quick
response, reliable sensing, fast reset time, and superior false alarm
immunity. Its small size allows the 250-CO to blend inconspicu-
ously with any decor, and its smooth contoured design is compat-
ible with both residential and commercial environments.
Unaffected by normal indoor temperature variations, the 250-CO
actually self-adjusts for environmental changes and operates reli-
ably under a wide variety of conditions. It also monitors its own
performance and automatically compensates for sensitivity drift
throughout the course of its service life.
The 250-CO features the SafeTest™ functional test feature, which
facilitates testing with real CO gas. SafeTest meets the functional
test requirement in NFPA 720, 2009/2012 editions.
Like all CO detectors, the 250-CO has a limited service life. When
it approaches this point, the 250-CO’s six-year end-of-life timer
automatically triggers a warning, locally, at the control panel, and
optionally, at a central monitoring station, indicating that the device
should be serviced.
An integrated temporal 4 sounder horn provides local signaling capa-
bility for the 250-CO, and it easily interfaces with any listed intrusion or
re alarm system by means of its 150mA output relay. Its low current
draw results in little additional demand on the system power supply.
The 250-CO fully complies with the latest UL 2075 requirements
which allows for installation in a wide range of both residential and
commercial settings.
Standard Features
• SafeTest™ enables a full functional test with spray of real CO
gas
• Electro-chemical sensing technology
• Transmits sensor end-of-life to the control panel and central
station if the system is monitored
• Fully listed to the latest UL 2075 CO standard for residential or
commercial occupancies
• Built-in trouble/power supervision relay
• Six-year sensor
• Self-diagnostics keep the device operating optimally through-
out its service life
• 12 or 24VDC operation and 150mA relay contact congurable
for normally open or normally closed operation
• Large SEMS terminals ease wiring installation 14 to 22 AWG
• One-touch TEST/HUSH button simplies local operation
• Integrated 85 dBa temporal 4-sounder for local notication
• On-board LED provides local alarm and trouble indication
• Inconspicuous footprint and attractively contoured design
• Adapter plate makes replacing 240-COe CO detector simple
SafeAirTM 12/24VDC
Carbon Monoxide
Detector with SafeTestTM
250-CO

Page 2 of 4 DATA SHEET S85001-0618
Not to be used for installation purposes. Issue 4
Application
The SafeAir 250-CO Carbon Monoxide Detector is intended for
ordinary indoor-dwelling unit applications in both residential and
commercial occupancies, including single/multiple family residential
occupancies, hotel rooms, dorm rooms, and other areas approved
by the authority having jurisdiction (AHJ). The 250-CO detector
can connect to either UL 985 (Household Fire Warning) or UL 864
(Commercial Fire) control panels. It is not intended for use in indus-
trial applications such as gasoline reneries or parking garages,
which require different listings. The 250-CO detector has an optional
adapter mounting plate for the 240COe CO detector. To purchase
the plate order P/N 250-COPLT-5PKG.
Selecting a suitable location is critical to the operation of CO
detectors. Install the 250-CO in accordance with NFPA 720 Stan-
dard for the Installation of Carbon Monoxide (CO) Detection and
Warning Equipment. Place wall-mounted detectors at least 5 ft.
(1.5 m) up from the oor. For ceiling mounted applications, place
the detector at least 1 ft. (0.3 m) from any wall.
Recommended CO detector locations:
9Within 10 ft. (3 m) of all sleeping areas, including areas such
as hotel rooms and dorm rooms.
9In a suitable environment: areas with a temperature range of
32 to 104°F (0 to 40°C) and with a relative humidity range of 0
to 90% noncondensing.
9In residential dwellings, locate detectors in every bedroom,
within 10 ft. (3 m) of sleeping areas, and on each level. At a
minimum, place one detector outside the sleeping areas.
Recommended locations for CO detectors
Always check with your local building codes,
legislation, and Authority Having Jurisdiction
for specic CO location requirements in your area
Recommended CO detector locations in commercial occupancies:
9On every habitable level of the building based on an engineer-
ing evaluation considering potential sources and migration of
carbon monoxide
9In any area required by local building codes, legislation, or
Authorities Having Jurisdiction
9On a rm, permanent surface
Do not install the CO detector:
8Within 10 ft. (3 m) of a fuel-burning appliance
8Near air conditioners, heating registers, and any other ventilation
source that may interfere with CO gas entering the detector
8Where furniture or draperies may obstruct the airow
8In a recessed area
Operation
SafeTest functional test: This test facilitates the use of CO test
spray to verify the correct operation of the detector. Functional
testing is mandatory per NFPA 70 as of January 2012. SafeTest
mode is activated by pressing and holding down the test/hush
button per the installation instructions. While in SafeTest mode,
directing UL approved CO testing spray at the sensor port will
result in the activation of the alarm relay, and the sounder and red
LED to activate in a temporal-four pattern. Pressing and holding
the test/hush will exit SafeTest mode.
Distinct 85 dB temporal four-sounder alarm: The 85 dB
temporal-four sounder provides a distinctive alarm notication that
is easy to differentiate from smoke alarm notication devices. The
alarm beeps four times, rests ve seconds and then repeats the
pattern.
Test/hush button: Use the test/hush button to test the alarm and
silence an activated alarm. Pushing the test/hush button silences
the integral sounder for ve minutes. The red alarm light stays on
and if CO is still present after ve minutes, the detector once again
sounds in the temporal-four pattern. The hush feature does not
operate at CO levels above 350 ppm (parts per million).
End of sensor life indicator: The detector uses both a ash-
ing green LED and intermittent sounder chirps to indicate that the
detector needs replacing. To silence the detector, push the test/
hush button. The detector also begins signaling a trouble when the
CO sensor is approaching end-of-life. When connected to a Listed
control panel, the trouble relay can report a trouble condition locally
at the panel and optionally at the central station, if the system is
monitored.
Common trouble relay: The trouble relay opens to indicate a
trouble condition upon lost power, CO sensor cell trouble, or cell
end-of-life.
Installation
The 250-CO Carbon Monoxide Detector is a four-wire device
designed to use a Class 2 output from a control panel or auxiliary
power supply Listed to UL 985 or 864 standards.
All wiring must conform to the NFPA 70 National Electric Code, UL
2075, NFPA 720, an applicable codes. Use 14 to 22 AWG wire.
WARNINGS: Connect the CO detector only to a zone dedicat-
ed exclusively for CO detection and that is monitored 24 hours
a day. Do not connect to an initiating circuit with re or security
devices. Failure to properly install, test, and maintain a CO
detector may cause it to fail, potentially resulting in loss of life.
The 250-CO/240-COe adapter plate
Use the 250-COPLT-5PKG adaptor plate when replacing a 240-
COe with a 250-CO to cover the footprint of the 240-COe. For
example, use the plate to cover any paint discoloration left behind
from the 240-COe.

Page 3 of 4 DATA SHEET S85001-0618
Not to be used for installation purposes. Issue 4
Alarm
IDC (NO) End-of-line
device (pro-
vided by the
life safety
system)
PWR -
PWR +
End-of-line
device (pro-
vided by the
life safety
system)
Alarm
IDC (NO)
Supervisory
IDC (NC)
PWR -
PWR +
Alarm
IDC (NO)
Supervisory
IDC (NC)
End-of-line device
(provided by the life safety system)
End-of-line
device (pro-
vided by the
life safety
system)
PWR -
PWR +
NO C NC - + NO C NO C NC - + NO C
Conguration: Multiple devices, separate alarm, trouble zone
Conguration: Multiple devices, single zone
Conguration: Single device, single zone
Wiring

Page 4 of 4 DATA SHEET S85001-0618
Not to be used for installation purposes. Issue 4
08-09-1208-09-12
Detection & alarm since 1872
U.S.
T 800 336 4206
F 860 284 3083
Canada
Chubb Edwards
T 519 376 2430
F 519 376 7258
Southeast Asia
T : [phone]
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
Australia
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www.edwardssignaling.com
© 2011 UTC Fire & Security.
All rights reserved.
CO detector replacement
The SafeAir 250-CO Carbon Monoxide Detector has a long-life electrochemical sen-
sor. When put into functional test mode, the 250-CO can be tested with real CO gas as
specied in the installation instructions. Functional testing is a requirement of NFPA 720,
2009/2012 Edition. Sensor EOL is also annunciated at the CO detector and can be si-
lenced for a period of time by pushing the test/hush button. SafeAir will also notify the UL
985 or 864 control panel when the CO Sensor is approaching end-of-life or other trouble
conditions such as power loss.
Specications
Input voltage 12 or 24 VDC supplied by control panel or resettable auxiliary power
supply
Current consumption
Normal
Alarm
20 mA
40 mA (75 mA in test)
Alarm relay
Type
UL rating
150mA at 33 VDC
Form C
Zone
Common trouble relay
Type
UL rating
150mA at 33 VDC
Normally opened held closed with power applied
Common
CO alarm level 70 ppm/60 to 240 minutes
Sounder 85 dB with temporal 4 pattern
Compatible control panel Listed to UL 985 or 864 standard
Compatible electrical box North American 2½ in. (64 mm) deep 1-gang
Wire size 14 to 22 AWG (0.25 to 2.0 mm²)
Dimensions (W x L x D)
Detector
Adapter plate
3.1 x 4.6 x 1.3 in. (7.8 x 11.7 x 3.2 cm)
4.5 x 6.5 x 0.2 in. (11.4 x 16.5 x 0.5 cm)
Weight
Detector
Adapter plate
4.7 oz. (133 g)
1.6 oz (46 g)
Color White
Operating environment
Temperature
Relative humidity
32 to 104°F (0 to 40°C)
0 to 90%, noncondensing
UL rating Listed to ANSI/UL 2075 Standard
Call technical services regarding Canadian CSA Listing
Ordering Information
Model Description
250-CO SafeAir Carbon monoxide detector, alarm & trouble relays, sounder,
end-of life signal, 12/24VDC
250-COPLT-5PKG Adaptor plate for use when replacing the 240-COe CO detector with
a 250-CO
CO Gas Test Spray Functional CO gas test spray Solo C-6 available from SDI
(www.sdire.com) through security distribution.