Table of Contents:
Page #
What You Should Know About CO .........................................................2
What You Should Know About Natural Gas............................................2
Recommended Location of Alarms.........................................................2
Basic Safety Information.........................................................................3
Where Alarm Should Not Be Installed ....................................................4
Installation Instructions ...........................................................................5
Electrical Shock Hazard .........................................................................5
Locking / Tamper Feature .......................................................................5
Wiring Instructions ..............................................................................5, 6
Operation, Testing & Maintenance .........................................................7
QUICK FIND
®
Alarm Originating Feature & Reset .................................8
What To Do If The Alarm Sounds ...........................................................8
CO Alarm Silence Feature ......................................................................9
Testing & Maintenance .....................................................................9, 10
Battery Backup Replacement ...............................................................10
CO & Natural Gas Alarm Limitations .................................................... 11
Operational Summary.....................................................................12, 13
Warranty ................................................................................ Back Cover
MODEL MCN108, MCN108L
CARBON MONOXIDE ALARM AND
NATURAL GAS ALARM
WITH SILENCE FEATURE
THANK YOU for purchasing this combination alarm. This manual includes important information
regarding where to install the alarm, how to operate, maintenance, testing and product features. It
also includes tips and information which could help protect you and your family.
PLEASE READ AND SAVE!
Page 13
GAS
BLUE LED
AUDIBLE & VISUAL SIGNALS
POWER
GREEN LED
HORN
OPERATIONAL SUMMARY
(continued)
CONDITION / RECOMMENDATION
CO
RED LED
Silent
(alarmed
previously)
Off and Blinks
On approx
every 5
seconds
until reset
On and Blinks
Off approx
every 20
seconds
Off and Blinks
On approx
every 5
seconds
until reset
Condition:
Alarm needs to be reset due to abnormal operation/previous
alarms.
Recommendation:
To reset the alarm, hold the Test/Silence button for 10
seconds or until the blue LED turns on. This will clear the alarm origination
and latching LEDs. Reset after each alarm event.
Horn has
stopped
sounding
Off
On and Blinks
Off approx
every 20
seconds
Condition:
Latching CO LED indicator. The alarm has previously detected
CO and had alarmed.
Recommendation:
Follow the reset instructions to remove the latching
LED.
Horn has
stopped
sounding
On and Blinks
Off approx
every 20
seconds
Off
Condition:
Latching GAS LED indicator. The alarm has previously detected
GAS and had alarmed.
Recommendation:
Follow the reset instructions to remove the latching
LED.
1 Chirp
approx.
every 40
seconds
Off
On and Blinks
Off approx
every 20
seconds
Off
Condition:
Low battery.
Recommendation:
Check to make sure a battery is present in the drawer,
the battery activation pull tab has been completely removed, battery polarity
is correct and the battery terminals are making contact with the smoke alarm
contacts in the battery drawer. If chirp continues, replace the 9V battery (see
User’s Manual for recommended battery types).
3 Chirps
approx.
every 20
seconds
Off
On and Blinks
Off approx
every 20
seconds
Off
Condition:
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Recommendation:
Reset the alarm. If this does not clear the problem,
replace alarm.
2 Chirps
approx.
every 20
seconds
Off
On and Blinks
Off approx
every 20
seconds
Off
Condition:
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Recommendation:
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VHUYLFHOLIHQRWL¿FDWLRQFDQEHWHPSRUDULO\VLOHQFHGIRUDKRXUSHULRGIRU
up to 20 days. After 20 days, the warning cannot be silenced. The alarm
should be replaced immediately.
* During 120 volt operation On and Blinks Off approx. every 20 seconds.
During 9 volt (DC backup) operation, blinks On approx. every 40 seconds.
Off and Blinks
On approx
every 5
seconds
until reset
Off and Blinks
On approx
every 5
seconds
until reset
RESET INSTRUCTIONS:
Press the Test/Silence button for 10 seconds, or until the blue LED turns on, and then release. This will clear the alarm
latching LED’s and clear the alarm origination. Be sure to RESET alarms after each alarm event.
QUICK FIND® Alarm Origination/Location Feature
: The QUICK FIND® feature will allow you to immediately locate the originating alarm (the alarm
that triggered the other alarms), once the alarms have stopped sounding.
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sequence is designated by the alarm type.
2. Once this test sequence ends, the originating alarm continues to sound for approximately 60 seconds, which provides ample time to locate the
originating alarm.
3. Remember to
reset
the
originating alarm
in order to clear the QUICK FIND® and return the system to normal operation.
NOTE:
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and we will gladly assist you.
288-3508-07
©
2012 UNIVERSAL SECURITY INSTRUMENTS, INC., Rev. 07/2016 CD
Printed in China
SEVEN-YEAR LIMITED WARRANTY
MODELS MCN
108 and
MCN
108L
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defects in material and workmanship for a period of seven (7) years from the date of purchase.
This warranty shall not apply to any batteries used in the product or to any damage which may be
caused by such batteries. This warranty applies only to the original consumer purchaser and only
to products used in normal residential use and service. If this product is found to be defective,
USI’s only obligation, and your exclusive remedy, is the repair or replacement of the product, at
USI’s discretion, provided the product has not been damaged through misuse, abuse, accident,
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LVIRXQGWRKDYHEHHQLPSURSHUO\LQVWDOOHGVHWXSRUXVHGLQDQ\ZD\QRWLQDFFRUGDQFHZLWKWKH
instructions supplied with the product.
ALARM RETURNS
For replacement of this alarm under the terms of this Warranty, contact Customer Service at
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a particular purpose, other than the warranty contained herein. No implied warranty on this product,
created by state law, shall extend beyond the term of this warranty unless such law otherwise
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incidental loss or damage, including, but not limited to, damages to any equipment with which this
product is used. Some states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitations or exclusions may not apply to you. No agent, representative,
dealer, or employee of the company has the authority to increase or alter the obligations or terms
RIWKLV:DUUDQW\7KLV:DUUDQW\JLYHV\RXVSHFL¿FOHJDOULJKWVDQG\RXPD\DOVRKDYHRWKHUULJKWV
which vary from state to state. This Warranty is only valid for merchandise purchased from outlets
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LITHIUM BATTERY LIMITED WARRANTY
7KH8OWUDOLIHEDWWHU\PRGHOV89/-DQG89/-3DUHZDUUDQWHGE\8OWUDOLIH&RUSRUDWLRQLQWKLV
alarm ONLY and are not warranted in any other device. Submit your warranty claim through the
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11407 Cronhill Drive, Suite A
Owings Mills, Maryland 21117 USA
Visit Us on the Web!
www.USI Electric.com