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Use and Care Guide

ManualsBrandsUniversal Security Instruments ManualsCombination Smoke Carbon Monoxide DetectorsAC Hardwired Combination Smoke and Carbon Monoxide Detector with Battery Back-Up
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The yellow wire is used only for multiple station operations with USI ELECTRIC or UNIVERSAL
Model alarms only. Connecting this yellow wire to any other circuits may result in damage
and alarm malfunction. When alarms are interconnected, all alarms must be powered from
a single AC branch circuit. If local codes do not permit, be sure the neutral wire is common
to both phases. The maximum wire run distance between the rst and last alarm/device
in an interconnected system is 1,000 feet. NOTE: Use standard household wire (18 gauge
or larger, rated at least 300V, as required by local codes) available at all electrical supply/
hardware stores.
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. In addition, the resistance of the
interconnecting wiring shall be a maximum of 10 Ohms.
2. Attach the mounting bracket to the electrical junction box.
3. To activate 9 volt battery and alarm, hold the QUICK DRAW
(R)
battery drawer closed, pull and
remove the PULL-TAB. Conrm that the entire PULL-TAB has been completely removed.
Discard PULL-TAB.
4. Plug the AC QUICK CONNECTOR into the alarm base. Push and twist the alarm clockwise
onto the mounting bracket.
5. See “OPTIONAL TAMPER RESISTANT FEATURES” and “TO ACTIVATE THE LOCKING
FEATURES” instructions on Page 4.
6. Turn on AC power and check the LED’s for proper operation. The green LED should be on to
indicate AC power. The red LED blinks on once approx. every 40 seconds to indicate proper
operation.
IMPORTANT!
The battery backup is designed to provide short-term emergency power to the Smoke, CO and Gas
Alarm. Actual backup time depends on the strength (freshness) of the battery. The battery backup
will not work unless a good battery is properly installed.
When the alarm utilizes battery backup power, the natural gas sensor will operate the alarm and will
sample less frequently to extend battery life. Natural gas could be present during this period between
samples without the alarm sounding, especially if there is a rapid buildup of natural gas.
NOTE: It is best to “reset” the alams before initial test is performed. See Page 10 for reset
procedures.
Interconnected CO alarms or CO alarm circuit of combination smoke and CO and Natural Gas
alarms will only respond if a CO alarm / event initiates the alarm. All other alarms remain silent.
Interconnected combination Natural Gas Alarms will only respond if a natural gas event
initiated the alarm. All other alarms remain silent.
Interconnected smoke alarms, heat alarms and relay modules will only respond if a smoke
alarm / event or heat alarm / event initiates the alarm. All CO and Natural Gas alarms remain
silent.
Note that smoke alarms without battery backup will not respond during an AC power
failure.
NOTE: Relay Modules/USI-960 will not respond if a CO alarm / event initiates the alarm.
120 VAC 60Hz
100mA Max.
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