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IMPORTANT:

 The USI relay module model USI-960 will not respond if a CO or gas alarm/

event initiates the alarm and it will not respond during an AC power failure.

INDUSTRY & AGENCY INSTALLATION RECOMMENDATIONS 

CALIFORNIA STATE FIRE MARSHAL

“Early warning fire detection is best achieved by the installation of fire detection equipment 

in all rooms and areas of the household as follows. A smoke alarm installed in each separate 

sleeping area (in the vicinity of, but outside of the bedrooms), and heat or smoke detectors in 

the living rooms, dining rooms, bedrooms, kitchens, hallways, attics, furnace rooms, closets, 

utility and storage rooms, basements and attached garages.”

NATIONAL FIRE PROTECTION ASSOCIATION

For your information, the National Fire Alarm Code, NFPA 72, reads as follows:
“29.8.1 *Required Detection - Where required by applicable laws, codes, or standards for 

a specific type of occupancy, approved single and multiple-station smoke alarms shall be 

installed as follows:
1. *In all sleeping rooms and guest rooms
2. *Outside of each separate dwelling unit sleeping area, within 6.4 m (21 ft) of any door to a 

sleeping room, the distance measured along a path of travel

3. On every level of a dwelling unit, including basements.
4. On every level of a residential board and care occupancy (small facility), including base-

ments and excluding crawl spaces and unfinished attics

5. *In the living area(s) of a guest suite
6. In the living area(s) of a residential board and care occupancy”
The equipment should be installed using wiring methods in accordance with the National Fire 

Protection Association’s Standard 72, National Fire Code. For additional information, contact: 

National Fire Protection Association, One Batterymarch Park, Quincy, MA 02169-7471 or go 

to www.nfpa.org

(UTHA) Sensitivity Indicating Means

The sensitivity indicating means for this alarm is the use of the analyzer for Smoke Detectors 

Model 501-A or 501-A/Bat Aerosol Generator Manufactured by Gemini Scientific Corp., 

1122-B Aster Ave., Sunnyvale, CA 94086. The Equivalent UL 268 Light obscuration %/ft as 

measured by this instrument must be within the obscuration listed on the back of this alarm.

(UTHA) Go/No-Go Field Test

The Go/No-Go test for this alarm is to use one of the following UL listed can-type aerosol 

smoke alarm testers. The instructions for use are printed on the canister. If you choose to use 

an aerosol smoke product to test the smoke alarm, be certain to use one that has been listed 

to Underwriters Laboratories, Inc. Safety Standards and use it only as directed. Use of non-

UL listed products or improper use of UL listed products may affect the alarm’s sensitivity.

(UTHA) Maintenance

The alarm is virtually maintenance free. However, under dusty conditions, a vacuum hose 

may be used to clear the sensing chamber of dust. 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.

ALARM OPERATION

NORMAL OPERATION: 

The alarm is operating once the AC power is connected and 

turned on; the battery pull tab has been removed, and the alarm has sounded one long beep.  

The green LED is on.  The red smoke LED blinks on once approximately every two minutes.  

The red CO LED is off.  The horn is silent.  

BATTERY-BACKUP MODE: 

 The green light is off. The red LED blinks on once  

approximately every two minutes.  The horn is silent.  The battery backup is designed to 

provide continuous power to the alarm in the event of an AC power outage.

CAUTION!

 This combination smoke & fire & carbon monoxide alarm has separate alarm 

sounds.  This alarm is not designed to detect any other gas. Carbon monoxide and smoke 

may be present in other areas. The alarm will only indicate the presence of CO or smoke 

which reaches the sensor.

Summary of Contents for MPC122S

Page 1: ...ere This Alarm Should Not Be Installed 5 Mounting Instructions 6 Tamper Resistant Alarm Locking Feature 6 Wiring Instructions 7 Stand Alone Alarm Installations 7 Interconnected Alarm Installations 8 I...

Page 2: ...a safer greener alternative Quick Find Alarm Origination Feature easily identifies first alarm to sound in an intercon nected system ALARM LIMITATIONS AND FUNCTIONS IMPORTANT ALARMS WILL NOT WORK WITH...

Page 3: ...e who may not be awakened by the alarm sound or to those who may be incapable of safely evacuating the area unassisted ALARMS ARE NOT FOOLPROOF Test alarms weekly to ensure continued protection ALARMS...

Page 4: ...ide wall with the top edge of the smoke alarm a maximum of 6 15 2cm below the ceiling wall intersections See Diagram A Existing Homes The NFPA requires smoke alarms or combination alarms on every leve...

Page 5: ...allation in hazardous locations as defined in the National Elec trical Code To avoid causing damage to this alarm to provide maximum protection and to prevent unnecessary alarms DO NOT LOCATE THIS ALA...

Page 6: ...tions in or unconventional vent pipe designs which can amplify the above situations These placement recommendations are intended to keep alarms at a reasonable distance from a fuel burning source and...

Page 7: ...will damage the alarm Installation of this alarm must conform to the electrical codes in your area Article 760 of the National Electrical Code NFPA 72 101 SBC SBCCI UBC ICBO NBC BOCA OTFDC CABO and an...

Page 8: ...multiple alarms INTERCONNECTED ALARMS INSTALLATION The wiring to be used shall be in accordance with the provisions of Articles 210 and 300 3 B of the National Electrical Code ANSI NFPA 70 NFPA 72 and...

Page 9: ...f the dwelling When alarms are interconnected all alarms will sound when one alarm first sounds To prevent damage do not connect this alarm to any other type of alarm or auxiliary device Connecting in...

Page 10: ...tectors Model 501 A or 501 A Bat Aerosol Generator Manufactured by Gemini Scientific Corp 1122 B Aster Ave Sunnyvale CA 94086 The Equivalent UL 268 Light obscuration ft as measured by this instrument...

Page 11: ...system after all the alarms have stopped sounding 1 Press and release the test silence button on any interconnected alarm After releasing the button the test sequence will sound on all the interconnec...

Page 12: ...alarm You might accidentally damage or set fire to the alarm or to your home CAUTION Continuous exposure to the high sound level of this alarm over an extended period of time may cause hearing loss Du...

Page 13: ...D KNOW ABOUT CO Carbon monoxide CO is an insidious poison It is a colorless odorless tasteless gas It is a cumulative poison Even low levels of CO have been shown to cause brain and other vital organ...

Page 14: ...ur ers instructions or contact the manufacturer s directly for more information about CO safety and this equipment Make sure that motor vehicles are not and have not been operating in an attached gara...

Page 15: ...Check the color of the flame on the burner and pilot lights to ensure they are burning properly They should be blue If the flame is orange or yellow it is a sign the fuel is not burning completely and...

Page 16: ...ian for assistance Test the alarm following installation and weekly thereafter The built in test switch accurately tests the alarm operation as required byANSI UL217 and UL2034 Standards for Safety If...

Page 17: ...utton for 10 15 seconds and then release This will clear the alarm origination and latching LED Be sure to RESET alarms after every alarm event QUICK FIND Alarm Origination Location Feature The QUICK...

Page 18: ...warranty on this product created by state law shall extend beyond the term of this warranty unless such law otherwise provides USI specifically disclaims any liability and shall not be liable for any...

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