Kidde K4MCO User manual

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User Guide
230V MAINS
CARBON MONOXIDE ALARM
WITH RECHARGEABLE
BATTERY BACKUP
WARNING : This alarm will not operate
without Mains power. During a power failure
the unit will operate for at least 72 hours on
battery back up.
Type B apparatus
Model K4MCO
EN 50291-1:2018
LICENSE NO. KM 738897
P/N: 2512-7245-01
KM 738897
BS EN 50291-1:2018

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Contents
1. Diagram of Alarms......................................................................................................................................................................................... 3
2. What is Carbon Monoxide?..................................................................................................................................................................... 4
3. Safety Information......................................................................................................................................................................................... 5
4. Installation Instructions – Recommended Locations...............................................................................................................7
5. Using Your Alarm-what the signals mean.....................................................................................................................................11
6. Mains Power Failure.....................................................................................................................................................................................13
7. Interconnected systems.............................................................................................................................................................................14
8. What to do if Your Alarm Sounds!.......................................................................................................................................................16
9. Maintenance of Your Alarm.....................................................................................................................................................................17
10. Troubleshooting............................................................................................................................................................................................ 17
11. Product Specifications............................................................................................................................................................................... 18
12. Warnings and Important Notices....................................................................................................................................................... 19
13. Service and Warranty................................................................................................................................................................................. 21
14. Environmental Protection....................................................................................................................................................................... 22

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1. Diagram of Alarm
Green,
Power LED
Test / Reset
Button
Model K4MCO
Red,
Alarm LED
FAULTPOWERALARM
MOVE TO FRESH AIR
Model: K4MCO
CARBON MONOXIDE ALARM

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Carbon monoxide is a cumulative poison. Longterm exposure to low levels may cause symptoms.
This alarm is time-weighted – the higher the level of CO, the sooner it will alarm.
NOTE: The apparatus may respond to brief exhaust gas emissions, for example during the initial start-up of an
appliance. Also, hydrogen acts as an interferent and can arise from some battery charging activities and the curing
of concrete or cement under certain circumstances. Volatile Organic Compounds (VOCs), e.g. alcohols, which may
eventually activate the alarm, can be generated from use of damp-proofing materials or other coatings containing
alkylalkoxysilanes.
2. What is Carbon Monoxide?
This CO alarm is not a substitute for proper
installation, use and maintenance of fuel burning
appliances including appropriate ventilation and
exhaust systems.
Carbon monoxide can be produced from poorly
burning appliances or from blocked flues and
chimneys.
If your alarm has sounded and you have ventilated
the room the CO may have dispersed before help
arrives. It is crucial that the source of CO is
determined and appropriate maintenance carried
out.
POTENTIAL SOURCES OF CO
• Wood-burning stoves
• gas boilers and Fires
• gas Hobs
• oil and coal burning appliances
• portable gas Heaters
• blocked Flues and cHimneys
• Fumes From integral garages
• barbecues
• HigH concentrations oF tobacco smoke

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To be safe, know the possible sources of CO in your home. Keep fuel burning appliances and their chimneys and vents in
good working condition. Learn the early symptoms of exposure, and if you suspect CO poisoning, move outside to fresh
air and get emergency help. Your first line of defence is an annual inspection and regular maintenance of your applianc-
es. Contact a licensed contractor or call your local utility company for assistance.
In rented properties your Landlord (or Council/ Housing Association), will have an Emergency Response phone
number, and be liable for the regular maintenance of their combustion appliances (Gas/LPG/Oil/Solid Fuel).
This alarm has not been tested specififically for use in caravans or boats. Only CO alarms certifified to
EN50291-2 are fully approved for this purpose.
Teach children how to respond to the alarm and that they should never play with the unit. This alarm is designed to
detect carbon monoxide from any source of combustion in a residential environment.
NOTE: Please thoroughly read this user guide and save the document for future reference and to pass on to any subse-
quent owner.
IMPORTANT: Additional markings can be found on the back of the unit.
The manufacturer recommends replacing this alarm seven years from the install date on the side of alarm. Product
contains sealed in lithium batteries. Removal can be done only by qualied professionals in recycling points.
Seven (7) years after the unit was installed, this unit will automatically alert you that it is time to replace the unit.
This is called “End of Unit Life” mode. To help track the life of your alarm, write the installation date in the space
provided on the side of the alarm. A label has been provided that has important information on what to do in case of a
CO alarm. Place the label at eye level on a wall near the alarm after it is mounted.
This alarm is not intended to alert hearing impaired individuals.
Alarm levels as defined by EN50291-1:2018
The table below shows the response times at which your CO alarm will sound.
3. Safety information
PParts per Million (PPM) of COof C TITime until Alarm
50 60  90 Minutes
100 10  40 Minutes
300 Must alarm in less than 3 minutes

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NOTE: If at any time your alarm fails to operate correctly (erratic or low sound, for example), or if you require further information,
please contact customer support at 0800 917 0722.
PParts per Million (PPM)
of CO
TiEffects on Adults
100 Slight headache, nausea, fatigue (flu-like symptoms)
200 Dizziness and headache within 2 – 3 hours
400 Nausea, frontal headache, drowsiness, confusion and rapid heart rate. Risk to life after
over 3 hours of exposure
800 Severe headaches, convulsions, vital organ failures. Death possible within 2 – 3 hours
CO Advice and Information
The table below shows the effects of different levels of CO poisoning on the body.
Important Safety Information
NOTE: If you recognise any of the above symptoms consult your Doctor immediately.
NOTE: Young children, elderly and pets are more susceptible to the dangers of CO.
NOTE: Your alarm is designed to detect CO gas. It is not designed to detect smoke, fire or other gas such as
natural gas.
NOTE: This product is intended for use in ordinary family homes. It is not designed to measure compliance with
occupational safety and the HSE.
NOTE: Individuals with certain specific medical conditions may need an alarm that operates below 30ppm.
If this applies consult your Doctor.
IMPORTANT: Ensure that all family members are familiar with the symptoms of CO poisoning and how your
alarm works.

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4. Installation Instructions – Recommended Locations
NOTE: CO alarms should be installed following the guidance of relevant local standards, such as EN 50292.
•Whether the alarm is wall-mounted or ceiling mounted, place the alarm a horizontal distance of between 1 metre
and 3 metres from a fuel burning appliance.
•When mounting the alarm on the wall, use an inside wall with the top edge of the alarm at a minimum of 150 mm
below the ceiling, and the bottom edge of the alarm within 300 mm below the ceiling. The bottom of the alarm
should also be at a level greater than the height of any door or window.
•Locate within hearing distance of bedrooms* and place at sleeping height if a heating appliance is in the bedroom.
•CO alarms in rooms with sloped ceilings should be located on the high side of the room.
•Ceiling mounted alarms should be at least 300 mm from any wall.
•If there is a partition in the room, locate the alarm on the same side of the partition as the potential source.
* A CO alarm should be installed in all rooms containing a fuel burning appliance. Additional CO alarms should be
installed in rooms where most awake time is spent, in every sleeping area, and on every level of the home.

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Locations to Avoid
•In the garage. Products of combustion are present when you start your motor vehicle.
•Do not install alarms adjacent to, or directly above, heaters or air-conditioning vents.
•In very humid areas (above 90% RH, non-condensing), such as bathrooms and shower rooms. Do not install directly
above a sink, or near dishwashers or washing machines. Moisture or steam can cause nuisance alarms.
•Do not install within 1 m of heating or cooking appliances, measured horizontally.
•In an area where the temperature may fall below 0 ºC or rise above 40 º C such as garages and unfinished attics.
•Do not install alarms in dusty areas. Dust particles may cause nuisance alarm or failure to alarm.
•In insect-infested areas.
•Within 300 mm of a light fitting, as electronic “noise” generated by the electronics may cause nuisance alarms.
•Do not install in an enclosed space (cupboard) or where the ventilation openings in the unit could be impeded by
items such as newspapers, table-cloths, furniture, curtains, etc.
•Do not install next to a door, window, extractor fan, flue, chimney, or any other area where high air flow may occur or
the unit may be directly exposed to weather.
•Do not install in locations that are difficult or dangerous to reach for testing or maintenance.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.

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4. Installation Instructions –Supply and Interconnect
Wiring Requirements
•This alarm is designed for installation by a qualified electrician in accordance with local wiring regulations and in
regard to relevant building regulations and codes of practice. In addition, the resistance of the interconnect wiring
shall be a maximum of 10 ohms.
•An appropriate all-pole disconnection device shall be provided as part of the building installation.
•The maximum wire run distance between the first and last unit in a hardwired interconnected system is 300 m.
•When alarms are hardwire interconnected, all interconnected units must be powered from a single circuit.
•This alarm must be powered by a constant 230V AC, 50Hz supply that is not controlled by any form of switch.
•This alarm interconnects with up to 24 other devices (of which 18 can be initiating) including smoke, CO and heat
alarms. (See below). This alarm is not designed to be interconnected with other manufacturer’s products, unless
otherwise specified.
WARNING: The alarm cannot be operated from power derived from a square wave modified square wave or
modified sine wave, inverter. These types of inverters are sometimes used to supply power to the structure in off grid
installations , such as solar or wind derived power sources. These power sources produce high peak voltages that will
damage the alarm.
Interconnect Wiring
Line (L)
Neutral (N)
House cabling in compliance with local regulations
Interconnect (I/O)*
Brown Blue
White* White*
Brown Blue
NOTE: Use standard British Standard household cable PVC/PVC 6242Y / 6243Y or equivalent in accordance with local regulations.

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WARNING: Turn off the main power to the circuit before wiring. Route the AC supply/interconnect cable into the dry
lining box or Kidde surface pattress
•Affix the CO alarm mounting plate to the dry lining box or Kidde surface pattress using suitable screws.
•Using a suitably-rated terminal block, connect the neutral supply to the blue wire of the connector plug and the live
supply to the brown wire.
•If interconnecting is required, connect the white wire of the connector plug to the designated interconnect
conductor of the 4-core supply cable.
•NOTE: Do not use an earth wire for the interconnect conductor.
•NOTE: If this is to be a single-station CO alarm, connect the white wire to an unused terminal block.
•Attach the connector plug to the back of the CO alarm. The plug will only fit one way and will snap into place.
•Slide switch on rear of alarm to on position.
•Align alarm with mounting plate and rotate clockwise into place.
•Test CO alarm. See section 5 “Testing”.
WARNING: Failure to properly install and activate this alarm will prevent proper operation of this alarm and will
prevent its response to CO hazards.
Interconnect Model Capability
Pf FirexCO TiKIDDE
KF10R 1SFWR Mains Ionisation Alarm with rechargeable battery back-up
KF10 1SFW Mains Ionisation Alarm with alkaline battery back-up
KF20R 2SFWR Mains Optical Alarm with rechargeable battery back-up
KF20 2SFW Mains Optical Alarm with alkaline battery back-up
KF30R 3SFWR Mains Heat Alarm with rechargeable battery back-up
KF30 3SFW Mains Heat Alarm with alkaline battery back-up
4MCO Mains CO Alarm with rechargeable battery back-up
4MDCO Mains CO Alarm with rechargeable battery back-up, digital display
K4MCO Mains CO Alarm with rechargeable battery back-up