Edwards Signaling 250-CO - Manual (Page 4)

4 / 8 P/N 1061018 • REV E • ISS 14JUL11
• In a suitable environment per the detector specifications
(see “Specifications” on page 7 for details)
• On a firm, permanent surface
Do not install the CO detector:
• Within 5 ft. (1.5 m) of any cooking appliance
• Within 10 ft. (3 m) of a fuel-burning appliance
• Near air conditioners, heating registers, or any other
ventilation source that may interfere with CO gas entering
the detector
• Where furniture or draperies may obstruct the airflow
• In a recessed area
Description
The 250-CO SafeAir Carbon Monoxide Detector detects
carbon monoxide gas, monitors the levels of CO gas, and
gives early warning when potentially dangerous levels exist. It
does not detect fire, smoke, or any other gases.
The built-in sounder is a supplementary alarm notification
device. The control panel is considered the primary alarm
notification device.
The 250-CO detector meets UL 2075 Standard for Gas and
Vapor Detectors and Sensors. To meet the requirements of
CAN/CSA-6.19 Residential Carbon Monoxide Alarming
Devices, use the 250-CO-EF Carbon Monoxide Detector.
Alarms and Signals
The 250-CO unit produces sounds other than the alarm signal
and provides a multicolored LED to indicate the detector
status. Use Table 1 below to determine the status of the
detector.
Distinct 85 dB temporal-four alarm: The 85 dB sounder
provides a distinctive temporal-four alarm notification that is
easy to differentiate from smoke detector notification devices.
The alarm beeps four times, pauses five seconds, and then
repeats the pattern.
Sensor end-of-life indicator: The detector uses both a
flashing amber LED and intermittent sounder chirps to
indicated that the detector needs replacing. The detector also
signals a trouble condition when the CO sensor reaches end of
life. As soon as possible, replace a detector that reaches end
of life because it may no longer detect carbon monoxide
accurately.
Common trouble relay: 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. The trouble relay opens to indicate a trouble
condition upon lost power, CO sensor cell trouble, or cell end
of life.
Table 1: Detector status indications
Status LED Sounder Description
Safe air Green, 1 pulse every
15 seconds No sound The detector has power and is functioning properly.
Alarm Red, pulses with
sounder Sounds four rapid beeps
every five seconds or every
minute after five minutes in
the alarm state Dangerous levels of CO are present. Evacuate the premises.
Press the test/hush button to silence the sounder for five minutes.
Activates the alarm relay. If connected, the alarm panel activates.
Trouble Amber, pulses with
sounder
Sounds one rapid beep every
45 seconds There is a problem with the detector and the detector is not working
properly. Contact the service company to correct the trouble and replace
the detector, if necessary.
Press the test/hush button to silence the detector for nine hours.
Activates the trouble relay.
End of sensor
life Amber, pulses with
sounder Sounds one rapid beep every
15 seconds The sensor is no longer working. Replace the detector as soon as
possible.
Press the test/hush button to silence the detector for 36 hours.
Activates the trouble relay.
Loss of power No LED No sounder Activates the trouble relay.