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Good ventilation is recommended when household cleaning supplies or similar contaminants
are used.

Excessive spillage or reverse venting of fuel-burning appliances caused by outdoor ambient
conditions, such as:

Wind direction and/or velocity, including high gusts of wind. Heavy air in the vent pipes (cold/
humid air with extended periods between cycles).

Negative pressure differential resulting from the use of exhaust fans.

Simultaneous operation of several fuel-burning appliances competing for limited internal air.

Vent pipe connections vibrating loose from clothes dryers, furnaces or water heaters.

Obstructions in or unconventional vent pipe designs which can amplify the above situations.

HOW TO INSTALL THIS CO AND GAS ALARM

IMPORTANT: Read all instructions before using this product.

1. Determine the best location for your CO and Gas Alarm.
2. Activate the 9 Volt battery by removing and discarding the pull tab. Make sure the battery door

is closed and latched.

3. Your alarm is equipped to be mounted as a direct plug-in unit. The unit can be plugged

directly into a wall outlet.

4. After plugging the unit into a wall outlet with 120 VAC, the green power LED should be on and

blink off approx. every 20 seconds. It may take up to 3 minutes for the alarm to begin
monitoring for CO and gas.

5. Test the alarm following installation and weekly thereafter.

NOTE: For your convenience, we provide separate labels for the French-language product
markings. If you choose to utilize those markings, remove the label from the backing and apply it
to the alarm. Carefully align the label in the appropriate space and press firmly to ensure the label
permanently adheres to the alarm.

WHAT YOU SHOULD DO IF THE ALARM SOUNDS

Never disconnect your CO and Gas Alarm to silence an alarm. The alarm will automatically sense
when the level of CO and natural gas in the air falls below the danger level. You should stay outside
the residence in fresh air until the alarm is silenced. When the alarm sounds, do not stand too close
to the alarm. The sound produced by the alarm is loud because it is designed to awaken a person in
an emergency. Prolonged exposure to the alarm at a close distance may be harmful to your hearing.

Page 5

READ CAREFULLY.

THIS UNIT IS SEALED. THE ALARM COVER IS NOT REMOVABLE

!

Leave your CO and Gas Alarm plugged in year-round. CO and gas problems can occur any
time during the year and this alarm can only alert you if it is plugged in and receiving power.

This Alarm

 i

s intended for use in a standard, unswitched 120VAC wall outlet. It is not intended

for use in extension cords, power strips or outlets controlled by a switch or dimmer. These may
not provide continuous power to the unit. When fully powered, it samples the air continuously. A
microchip inside the unit stores each reading and remembers the levels it has been exposed to
over time. The unit goes into alarm mode when it has been exposed to a "critical" level.

Test the alarm once a week. If the alarm ever fails to test correctly, have it replaced immediately.
If the alarm is not working properly, it cannot alert you to a problem.

This combination CO and Natural Gas Alarm is intended for residential use and is not suitable
for use in hazardous locations as defined in the Canadian National Electrical Code.

This unit must be powered by a 24 hour circuit. Be sure the circuit cannot be turned off by a
switch, dimmer or ground fault circuit interrupter (GFCI). Failure to connect this unit to a 24
hour circuit may prevent it from providing constant protection.

This alarm must have AC or battery power to operate. If AC power fails and the battery is dead
or missing, the alarm cannot operate.

The alarm will check for the presence of gas at the sensor less frequently when powered by
the backup battery. Gas could be present during the period between checks without going into
alarm, especially during a condition that results in a rapid buildup of gas.

This product is intended for use in ordinary indoor locations or family living units. It is not designed
to measure CO levels in compliance with Occupational Safety and Health Administration (OSHA)
commercial or industrial standards. Individuals with medical conditions which may make them
more sensitive to carbon monoxide may consider using warning devices which provide audible
and visual signals for carbon monoxide concentrations under 30 ppm. For additional information
on carbon monoxide and your medical condition, contact your physician.

Summary of Contents for MCN400CN

Page 1: ...CO 2 What You Should Know About Natural Gas 2 Basic Safety Information 3 Recommended Location ofAlarms 4 Avoid These Locations 4 How to Install 5 Reset Feature 6 Operation Alarm Characteristics 6 Wha...

Page 2: ...d 240 MINUTES Page 2 This product is intended for use in ordinary indoor locations of family living units It is not designed to measure compliance with Occupational Safety and HealthAdministration OSH...

Page 3: ...ferent alarm sounds mean Do not plug this alarm into an outlet controlled by a dimmer or switch or ground fault circuit interrupter The test sequence lasts for approximately 3 seconds after the test b...

Page 4: ...n particles stove furnace water heater space heater if possible In areas where a 20 foot 6m distance is not possible in modular mobile or smaller homes for example it is recommended the alarm be place...

Page 5: ...d exposure to the alarm at a close distance may be harmful to your hearing Page 5 READ CAREFULLY THIS UNIT IS SEALED THE ALARM COVER IS NOT REMOVABLE Leave your CO and Gas Alarm plugged in year round...

Page 6: ...ep 1 second pause repeat The green LED turns off The blue LED blinks in sync with the horn beep every second The screen will display gas on digital display models NUISANCE ALARM If the horn signals fo...

Page 7: ...remain potentially dangerous the horn will start sounding again IMPORTANT The CO Silence feature is intended to temporarily silence the alarm horn It will not correct a CO problem The Gas alarm signa...

Page 8: ...el is displayed on the screen To reset and clear peak CO memory 1 Press and hold the PEAK RESET button for approx 10 seconds until the peak CO memory reading is cleared The alarm will chirp once to in...

Page 9: ...install smoke alarms even though carbon monoxide can be generated by a fire CO and Gas Alarms are not a substitute for property disability life or other insurance of any kind Appropriate coverage is y...

Page 10: ...nies and HVAC companies offer appliance inspections for a nominal fee Make regular visual inspections of all fuel burning appliances Check appliances for excessive rust and scaling Also check the flam...

Page 11: ...ation Replace the alarm Off Silent Off CONDITION RECOMMENDATION 4 beeps 5 second pause repeat Blinks Off when the Red LED blinks On Off Blinks in sync with cycle of 4 beeps Condition CO alarm Recommen...

Page 12: ...ng fees USI DOES NOT WARRANT AND SPECIFICALLY DISCLAIMS ANY WARRANTY WHETHER EXPRESS OR IMPLIED OF FITNESS FOR A PARTICULAR PURPOSE OTHER THAN THE WARRANTY CONTAINED HEREIN NO IMPLIED WARRANTY ON THIS...

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