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P/N 1061018 • REV D • ISS 10FEB10 

Detector locations 

Selecting a suitable location is critical to the operation of CO 
detectors. Install the 250-CO in accordance with NFPA 720 

Standard 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 floor. For ceiling mounted applications, 
place the detector at least 1 ft. (0.3 m) from any wall. 

The recommended CO detector locations are: 

• 

Within 10 ft. (3 m) of all sleeping areas, including areas such 
as hotel rooms and dorm rooms. 

• 

In 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. 

• 

In 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. See 
Figure 1 on page 1. 

The recommended CO detector locations in commercial 
occupancies are: 

• 

On every habitable level of the building based on an 
engineering evaluation considering potential sources and 
migration of carbon monoxide 

• 

In any area required by local building codes, legislation, or 
authorities having jurisdiction 

• 

On a firm, permanent surface 

Do not install the CO detector: 

• 

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 

Notes 

• 

Do not install CO detectors until after final construction 
cleanup (unless otherwise specified by the AHJ). 

• 

Leave this installation sheet with the owner/user of this 
carbon monoxide (CO) detection equipment. 

The 250-COPLT adapter plate 

Use the 250-COPLT adapter 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 different wall colors. 

Installation 

The 250-CO Carbon Monoxide Detector is a four-wire device 
designed to use a Class 2 output from a UL 985 or 864 Listed 
control panel or auxiliary power supply. 

All wiring must conform to the NFPA 70 

National Electric Code

, UL 

2075 

Standard for Gas and Vapor Detectors and Sensors

, NFPA 720 

Standard for the Installation of Carbon Monoxide

 

(CO) Detection 

and Warning Equipment

, and applicable codes. Use 14 to 22 AWG 

wire. 

WARNINGS 

Connect the CO detector only to a zone dedicated exclusively to 
CO detection and that is monitored 24 hours a day. Do not 
connect to an initiating circuit with fire or security devices. 

Failure to properly install, test, and maintain a CO detector may 
cause it to fail, potentially resulting in loss of life. 

To install the detector (without the adapter plate): 

1.  Run the 250-CO detector wiring to the detector location. 

2.  Carefully remove the cover from the detector using a small, 

flat screwdriver blade in the slot on the left side of the 
detector cover. 

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. 

 

 

Содержание 250-CO

Страница 1: ...he alarm and silence an activated alarm Pushing the test hush button silences the integral sounder for five minutes The red alarm light stays on and if CO is still present after five 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 Distinct 85 dB temporal four sounder alarm The 85 dB temporal four sou...

Страница 2: ...on The 250 CO Carbon Monoxide Detector is a four wire device designed to use a Class 2 output from a UL 985 or 864 Listed control panel or auxiliary power supply All wiring must conform to the NFPA 70 National Electric Code UL 2075 Standard for Gas and Vapor Detectors and Sensors NFPA 720 Standard for the Installation of Carbon Monoxide CO Detection and Warning Equipment and applicable codes Use 1...

Страница 3: ...ring and Figures 3 to 5 below and insert the wires under the appropriate screw terminals 10 Tighten both screws to secure the base to the wall plate 11 Replace the detector cover 12 Apply power The LED should flash green for approximately four seconds and then pulse green 13 Test per testing instructions below Figure 2 Screw terminals 1 2 3 4 1 Sounder 2 Sensor 3 Alarm relay 4 Terminals and are fo...

Страница 4: ... occurs signaling end of life To silence the detector push the test hush button Figure 3 Single device single zone configuration 1 2 PWR PWR 1 Alarm IDC NO 2 End of line device provided by the life safety system Note Relay is shown in the normal state for this detector Figure 4 Multiple devices single zone configuration 2 1 PWR PWR 1 Alarm IDC NO Note Relay is shown in the normal state for this de...

Страница 5: ... may also prevent the detector from being heard if distance or closed or partly closed doors muffle the sounder This unit is not designed for the hearing impaired CO detectors are not a substitute for life insurance Though these detectors will warn against increasing CO levels we do not warrant or imply in any way that they will protect lives from CO poisoning They should only be considered as an ...

Страница 6: ...6 of 6 P N 1061018 REV D ISS 10FEB10 ...

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