usi MCN108 Installation Instructions Manual Download Page 10

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Page 9

If the unit alarms and you are not testing the unit, it is warning you of a potentially dangerous

situation which requires your immediate attention. NEVER ignore any alarm. Ignoring the

alarm may result in injury or death.

WHAT TO DO IF NATURAL GAS IS DETECTED:

1. Leave the house immediately, opening doors and windows as you leave.
2. Do not use your telephone or appliances. Do not turn any light switches off or on. Any

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3. Call 911 and your gas company from a phone that is away from your home.
4. Do not reenter the area until the source of the leak is found and corrected.

If you hear the alarm horn sound approx. 1 beep, 2 second pause,

repeat, gas has been detected. Evacuate everyone from the building.

USING THE CO ALARM SIGNAL SILENCE FEATURE (GAS ALARM SIGNAL CANNOT

BE SILENCED)

NEVER

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Disconnecting the alarm removes your protection!

•

The Silence feature is intended to temporarily silence the horn while you identify and

correct the problem.

•

To use the Silence feature, press and release the TEST/SILENCE button until the horn

is silent if it was the initiating alarm.

•

If the TEST/SILENCE button is pressed while the alarm is in the silence mode, the alarm

will start sounding again.

WHEN THE CO ALARM SIGNAL IS SILENCED:

The CO alarm Silence Feature can be activated

by pressing and releasing the Test/CO Silence button on the initiating alarm while in alarm condition.

The alarm will remain silent for approx. 5 minutes (with the red LED blinking on approx. every 10

seconds), depending on the level of CO detected. If CO levels drop below alarm levels, the alarm

will remain silent and return to normal operation. If CO levels remain constant or increase, this

indicates a potentially dangerous situation and the horn will sound again. Ventilate area.

IMPORTANT!

The Silence feature is intended to temporarily silence the alarm horn. It will not correct a CO or

Natural Gas problem. The Gas Alarm signal cannot be silenced.

RESET:

To reset the QUICK FIND

Alarm Origination condition, press and hold the TEST/

SILENCE button on any alarm for at least 10 seconds, or until the blue LED turns on, and

then release. Reset after each alarm. The reset feature will reset all interconnected units.
SENSOR TROUBLE/SERVICE ALARM:

If the alarm chirps 3 times approx. every 20 seconds and

cannot be restored to normal operation, the alarm should be replaced immediately.

END-OF-SERVICE LIFE NOTIFICATION:

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When it is time to replace your alarm, which is after approx. 7 years of operation from initial power

up, the alarm will sound 2 chirps approx. every 20 seconds. The green LED stays on. The alarm

should be replaced immediately.
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up to 20 days. After 20 days, the warning cannot be silenced. The alarm should be replaced

immediately.

Clean the alarm at least once a month

to remove dust, dirt, insects or debris. Always turn off power

to alarm before cleaning. Using a soft brush or wand attachment to a vacuum cleaner, vacuum all

sides and cover of the alarm. Be sure all the vents are free of debris.

If the alarm is false alarming and cannot be restored to normal operation, the alarm should be

replaced.

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you plan to go to if the alarm sounds.

Page 10

BACKUP BATTERY REPLACEMENT

Disconnect AC power before changing battery. Shock hazard exists if AC power is

miswired.

The alarm uses a 9 Volt battery. The battery should last for at least one year under normal operating

conditions. The alarm has a low battery indicator, an audible beep or chirp. It will operate at approx.

40 second intervals for a minimum of 7 days. When this indication occurs, replace the battery with

an Alkaline type (Energizer #522, Duracell #MN1604, Zeus 9V), or Lithium type (Energizer LA522,

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OPTIONAL BATTERY DRAWER TAMPER LOCKING PIN: To make your battery drawer tamper

resistant, a locking pin has been provided (breakaway part on mounting bracket).
NOTE: If this feature has been activated, you will need to deactivate it by removing the battery

drawer tamper pin located at side of battery drawer. Refer to Page 5.
Pull the QUICK DRAW

(R)

battery drawer open and remove the battery. While observing polarity,

push the replacement battery into the battery drawer until it is held securely in place. Carefully

close the battery drawer and reinstall the tamper pin.
Test the alarm by pushing the TEST button on the alarm cover until the alarm sounds, then

release.

REPAIRS AND SERVICES

If this alarm is defective in any way, do not tamper with it. Return the alarm for servicing. See warranty

for instructions. There will be a service charge for repairing out of warranty alarms.

WEEKLY TESTING
This alarm is designed to act as a monitor, not for use as a short-term testing device, to

perform a quick check for the presence of CO or gas. WARNING: Natural gas (methane)

is highly explosive. An attempt to test the unit by exposing it to natural gas outside of a

controlled labatory environment can produce an explosion and death. NEVER use a gas

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or set

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operation as required by ANSI/UL2034 Standard for Safety. If, at any time, you test the alarm and

it does not perform as described, replace it immediately.

It is important to test this alarm every week to make sure it is working properly.

USING THE TEST FEATURE:

Press and release the TEST button on the alarm cover.
During testing, you will hear: 4 beeps (red LED on), 5 second pause, 1 beep (blue LED on).

If the alarm does not sound properly:

1. Make sure the AC power is applied and the battery is fresh and installed correctly.
2. Test the alarm again.
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or thumb. Use of any other instrument(s) is strictly prohibited.

REGULAR MAINTENANCE

CLEANING YOUR ALARM:

DO NOT use spray cleaning chemicals or insect sprays directly on or near the alarm. DO NOT

paint over the alarm. Doing so may permanently damage the alarm.
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based cleaners, paints, varnishes, most aerosol sprays including compressed gas dusters or any

other chemical on or near your alarm.

AFTER CLEANING, REINSTALL YOUR ALARM. TEST

YOUR ALARM BY USING THE TEST BUTTON.

Page 11

CO AND NATURAL GAS ALARM LIMITATIONS

Alarms have limitations. Like any other electronic device, CO and Natural Gas alarms are not
foolproof.
CO and Natural Gas alarms have a limited operational life. Your alarm must be tested weekly,
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test reveals a malfunction, immediately have the unit replaced (see last page for warranty
information).
CO and Natural Gas alarms can only sense CO which reaches the alarm’s sensor. Carbon monoxide
may be present in other areas without reaching the alarm.
CO or gas could be present on one level of the home and not reach the alarm installed on a different
level. For example, CO or gas in the basement may not reach an alarm on the second level, near
the bedrooms. For this reason, we recommend you provide complete coverage by placing a CO
and Natural Gas alarm on every level of the home.
CO and Natural Gas alarms are not a substitute for property, disability, life or other insurance of
any kind. Appropriate coverage is your responsibility.

POTENTIAL SOURCES OF CO IN THE HOME

Fuel-burning appliances, such as;

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or cooktops, gas clothes dryers.

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corroded or disconnected water heaters, vent pipes,

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Improper use of appliances/devices;

operating a barbeque grill or vehicle in an enclosed area

(such as a garage or screened porch).

Transient CO Problems:

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conditions and other special circumstances.

The following conditions can result in transient CO situations:

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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.

•

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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.

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3. Temperature inversions which can trap exhaust close to the ground.
4. A car idling in an open or closed attached garage or near a home.

HOW CAN I PROTECT MY FAMILY FROM CO POISONING?

This alarm is an excellent means of protection. It monitors the air and sounds a loud alarm before

carbon monoxide levels become threatening to the average, healthy adult.

An alarm is not a substitute for proper maintenance of home appliances.

To help prevent CO problems and reduce the risk of CO poisoning:

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