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THIS COMBINATION SMOKE/CO ALARM WILL NOT WORK WITHOUT 120 VAC
POWER AND A GOOD BATTERY PROPERLY INSTALLED. THE ALARM SHOULD
BE TESTED WHEN INSTALLED  AND THEN TESTED WEEKLY AFTER THAT.

INSTALLATION AND OPERATION

INSTALLATION INSTRUCTIONS: CAUTION!! READ CAREFULLY.

CAUTION: THIS UNIT IS SEALED. THE COVER IS NOT REMOVABLE!

This combination smoke/CO alarm requires constant 120 Volt AC power AND/OR a working
9 Volt battery to operate properly. This combination smoke/CO alarm WILL NOT work if AC power
is not connected or if it has failed or been interrupted for any reason AND the battery is removed,
drained or improperly connected. DO NOT use any other kind of battery except as specified in
this manual.
NOTE: AC/DC combination alarms offer added protection in the event of a power failure or a
drained battery.

Test alarm immediately following installation and weekly for proper operation by pushing the
test button. The alarm will then test itself for proper operation. The alarm then resumes normal
operation.

A mounting plate is provided on the back of the alarm.

Remove the mounting plate from the back of the alarm by holding the mounting plate and twisting
the alarm in the direction indicated by the "TURN TO REMOVE" arrow on the side of the alarm
base.

Installation of this unit must conform to the electrical codes in your area; Article 760 of the
National Electrical Code, NFPA 720/CO Alarms, NFPA 72, 101; SBC (SBCCI); UBC (ICBO);
NBC (BOCA): OTFDC (CABO), and any other local or building codes that may apply. Wiring
and installation must be performed by a licensed electrician. Failure to follow these guidelines
may result in injury or property damage.

This unit must be powered by a 24-hour, 120V AC 60Hz circuit. Be sure the circuit cannot be
turned off by a switch, dimmer or ground fault circuit interrupter. Failure to connect this unit
to a 24-hour circuit may prevent it from providing constant protection.

IMPORTANT: Do not subject this alarm to megger, high voltage or high-pot tests. Remove the
alarm(s) before high-potting tests occur on the circuit or system. (Ref. Section 550-17, National
Electric Code, 2002 Edition).

Page 6

ELECTRICAL SHOCK HAZARD

Turn off power to the area where you will install this unit at the circuit breaker or fuse box
before beginning installation. Failure to turn off the power before installation may result in
serious electrical shock, injury or death.

TAMPER LOCKING PIN: To make your alarm somewhat tamper resistant, a locking pin has been
provided (break-away part of mounting plate). Using this tamper pin will deter children and others
from removing the alarm from the mounting plate. To use the tamper pin, insert it into the hole in the
side of the alarm after the alarm has been installed on the mounting plate. Using long nose pliers,
pull the tamper pin out of the hole. It is now possible to remove the alarm from the mounting plate.

1.

Turn the alarm counterclockwise in the direction indicated by the "TURN TO REMOVE" arrow
on the side of the alarm base to remove it from the mounting plate. NOTE: The alarm is sealed
and the cover is not removable.

2.

Wiring Instructions:

a.

The appropriate power supply is 120 Volt single phase power supplied from a non-switchable
circuit NOT protected by a ground fault circuit interrupter.

b.

Turn off main power to the circuit before wiring the alarm.

c.

There are three pigtail leads (black, white and yellow) coming from the AC QUICK
CONNECTOR. The proper wire connection is as follows:

WIRES FROM QUICK CONNECTOR

CONNECT TO

BLACK

"HOT" side of AC line

WHITE

"NEUTRAL" side of AC line

YELLOW

Interconnect wires of other units

Summary of Contents for USI-7795

Page 1: ...ction in case of an AC power failure or a dead battery CO ALARMS are designed to detect carbon monoxide gas from any source of combustion that reaches their sensor They are NOT designed to detect any...

Page 2: ...ling for assistance Young children and household pets may be the first affected Your combination smoke CO alarm is designed to detect the toxic CO fumes that result from incomplete combustion such as...

Page 3: ...ready to slam it shut if heat and smoke rush in o Stay close to the floor if air is smoky Breathe shallowly through a cloth wet if possible o Once outside go to your selected meeting place and make su...

Page 4: ...tion smoke CO alarm should be centrally located outside of each separate sleeping area in the immediate vicinity of the bedrooms Where bedrooms are separated and audibility of the alarm to occupants w...

Page 5: ...Install at least 3 feet 0 9 meters away from these areas in extremely dusty dirty or insect infested areas Loose particles interfere with smoke alarm operation in areas where temperature may fall bel...

Page 6: ...C 60Hz circuit Be sure the circuit cannot be turned off by a switch dimmer or ground fault circuit interrupter Failure to connect this unit to a 24 hour circuit may prevent it from providing constant...

Page 7: ...terconnected CO alarms will only respond if a CO alarm event initiates the alarm All other alarms remain silent NOTE Relay modules USI 960 will not respond if a CO alarm event initiates the alarm Inte...

Page 8: ...f for proper operation of BOTH the SMOKE and CO detection and alarm circuits The Red LED will begin to flash rapidly and the alarm will indicate two cycles of the SMOKE alarm pattern The Red LED will...

Page 9: ...or approximately 3 9 minutes to indicate the alarm is in the temporary silent condition The smoke alarm will gradually regain normal sensitivity and sound the alarm if particles of combustion are stil...

Page 10: ...power before changing battery Shock hazard exists if AC power is miswired This alarm uses a 9 Volt Alkaline battery The battery should last for at least one year under normal operating conditions The...

Page 11: ...USI ELECTRIC INC at 7 A Gwynns Mill Court Owings Mills Maryland 21117 postage prepaid with a payment of 10 00 to cover the costs of return postage and handling You must include a proof of purchase rec...

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