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1. Information About Carbon Monoxide

Information About Carbon Monoxide Alarms – 
What They Can and Cannot Do:

CO alarms provide early warning of the presence of CO, usually before a 
healthy adult would experience symptoms. This early warning is possible, 
however, only if your CO alarm is located, installed and maintained as 
described in this guide.

Because carbon monoxide is a cumulative poison, long-term exposures to 
low levels may cause symptoms, as well as short-term exposures to high 
levels. This Kidde unit has a time-weighted alarm – the higher the level of 
CO present, the sooner the alarm will be triggered. 

This CO alarm can only warn you of the presence of CO. It does not 
prevent CO from occurring, nor can it solve an existing CO problem. If 
your unit has alarmed and you’ve provided ventilation by leaving your 
windows and doors open, the CO buildup may have dissipated by the 
time help responds. Although your problem may appear to be temporar-
ily solved, it’s crucial that the source of the CO is determined and that 
the appropriate repairs are made.

This CO alarm is designed to act as a monitor; it is not designed for use 
as a short-term testing device to perform a quick check for the presence 
of CO.

CO alarms have limitations. Like any other electronic device, CO alarms 
are not fool-proof. CO alarms have a limited operational life. You must 
test your CO alarm weekly, because it could fail to operate at any time. 

If your CO alarm fails to test properly, or if its self-diagnostic test reveals 
a malfunction, immediately have the unit replaced. This alarm will not 
monitor CO levels while in an error condition.

CO alarms can only sense CO that reaches the unit’s sensor. It’s possible 
that CO may be present in other areas without reaching the alarm. The 
rate and ability that which CO reaches the alarm may be affected by:

• Doors or other obstructions.

• Fresh air from a vent, an open window or other source.

• CO being present on one level of the home and not reach a CO alarm 

installed on a different level. (For example, CO in the basement may 
not reach an alarm on the second level, near the bedrooms). 

For these reasons, we recommend you provide complete coverage by 
placing a CO alarm on every level of the home. Please carefully read all 
information in sections 3 and 4 on properly installing this CO alarm.

CO alarms should not be used to detect the presence of natural gas 
(methane), propane, butane, or other combustible fuels.

Instruct children never to touch, unplug or otherwise interfere with the 
alarm. Warn children of the dangers of CO poisoning.

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Summary of Contents for 8LLCO

Page 1: ...d for future reference and passed on to any subsequent owner Carbon Monoxide Alarm User s Guide Models 8LLCO and 8LLDCO with digital display Model 8LLCO Model 8LLDCO with Digital Display EN 50291 1 20...

Page 2: ...ocal Gas Safe Registered Engineer Never restart the source of a CO problem until it has been corrected Never ignore the sound of the alarm If the alarm is sounding pressing the test reset button will...

Page 3: ...ecause your sense of sight smell hearing and touch give you information you can almost instantly judge what action to take if you hear your smoke alarm CO is an invisible odourless tasteless and non i...

Page 4: ...onditions If in doubt consult a medical practitioner Individuals with medical problems may consider using warning devices which provide audible and visual signals for carbon mon oxide concentrations u...

Page 5: ...re they are not well they become so disoriented they are unable to save themselves by either exiting the building or calling for assistance Also young children and household pets may be the first affe...

Page 6: ...nate the source of CO See What to do When the Alarm Sounds inside front cover IMPORTANT Model 8LLCO does not have a digital display and does not display carbon monoxide levels in PPM If the alarm soun...

Page 7: ...vent pipe designs which can amplify the above situations Extended operation of unvented fuel burning devices range oven fireplace etc Temperature inversions which can trap exhaust gases near the grou...

Page 8: ...imitations Like any other electronic device CO alarms are not fool proof CO alarms have a limited operational life You must test your CO alarm weekly because it could fail to operate at any time If yo...

Page 9: ...every 30 seconds to indicate that it is time to replace the alarm Replace the alarm immediately It will not detect CO in this condition To help identify the date to replace the alarm a label has been...

Page 10: ...ocations DINING KITCHEN BEDROOM BEDROOM BEDROOM LIVING ROOM Recommended Locations Temperature Operating Range 0 to 40 C Humidity Operating range Up to 90 non condensing Audible Alarm 85 dB at 1 metre...

Page 11: ...alarm Do not place the alarm where drapes furniture or other objects block the flow of air to the vents 3 Installation Locations CAUTION THIS UNIT IS SEALED INCLUDING THE BATTERY THE COVER IS NOT REMO...

Page 12: ...d Your CO alarm may also be placed on a tabletop If alarm is not wall mounted then be sure the alarm is no more than one metre from the floor to minimize the risk of causing permanent damage to the al...

Page 13: ...or alarm using a screwdriver slide the switch on the back of the unit up to the shut down position Unit will not respond to CO Normal Test Reset function Red LED flashes with beeps 4 quick beeps 5 se...

Page 14: ...ber Red LED flashes every 60 seconds One quick beep every 60 seconds Batteries need to be replaced If unit is cold allow to warm up above 20 C If the unit is at room tem perature and is beeping flashi...

Page 15: ...ations of CO between 1 and 30 PPM can often occur in normal everyday conditions Concentrations of CO below 30 PPM may be an indication of a transient condition that may appear today and never reappear...

Page 16: ...nently damage or temporarily contaminate the sensor Avoid spraying air fresheners hair spray paint or other aerosols near the alarm Do not paint the unit Paint will seal the vents and interfere with p...

Page 17: ...end of life or error mode it is neces sary to turn the unit off This stops it from making a sound and also discharges the remaining capacity of the battery to render it safe 1 Remove the bracket back...

Page 18: ...ny kind resulting from gas leakage fire or explosion This warranty does not affect your statutory rights Warranty Performance During the above warranty period your product will be replaced with a comp...

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