First Alert 7020b User Manual Download Page 3

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The basic installation of this Smoke Alarm is similar whether you want to
install one Smoke Alarm, or interconnect more than one Smoke Alarm.
If you are interconnecting more than one Smoke Alarm, you MUST read
“Special Requirements For Interconnected Smoke Alarms” below before
you begin installation.

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.

1. Remove the mounting bracket from the base, and attach it to the

junction box.
Activate the battery back-up by removing the “Pull to Activate Battery
Back-Up” tab. Or, install battery back-up. Battery back-up cannot work
until you install the battery in the correct position (Match “+” to “+” and
“-” to “-”).
Push and hold test button until the alarm sounds: 3 beeps, pause, 3
beeps, pause. The Escape Light

will turn on. LED flashes once every

second.

2. Using wire nuts, connect the power connector to the household wiring.

3. Plug the power connector into the back of the Smoke Alarm.

4. Position the base of the Smoke Alarm over the mounting bracket and

turn. The Alarm can be positioned over the bracket every 90°. Turn the
Smoke Alarm clockwise (right) until the unit is in place.

5. Check all connections.

Improper wiring of the power connector or the wiring leading to the
power connector will cause damage to the Alarm and may lead to a
non-functioning Alarm.

ELECTRICAL SHOCK HAZARD. Do not restore power until all Smoke
Alarms are completely installed. Restoring power before installation is
complete may result in serious electrical shock, injury or death.
6. Make sure the Smoke Alarm is receiving AC power. Under normal

operation, the Green power indicator light will shine continuously.

7. If the Green power indicator light does not light, TURN OFF POWER TO

THE JUNCTION BOX and recheck all connections. If all connections are
correct and the Green power indicator still does not light when you
restore the power, the unit should be replaced immediately.

8. Test each Smoke Alarm. Press and hold the Test/Silence button until the

unit alarms. When testing a series of interconnected units you must
test each unit individually. Make sure all units alarm when each one
is tested.

If any unit in the series does not alarm, TURN OFF POWER and recheck
connections. If it does not alarm when you restore power, replace it
immediately.

Special Requirements For Interconnected Smoke Alarms

• Failure to meet any of the above requirements could damage the

units and cause them to malfunction, removing your protection.

• AC and AC/DC Smoke Alarms can be interconnected. Under AC

power, all units will alarm when one senses smoke. When power is
interrupted, only the AC/DC units in the series will continue to send
and receive signals. AC powered Smoke Alarms will not operate.

Interconnected units can provide earlier warning of fire than stand-alone units,
especially if a fire starts in a remote area of the dwelling. If any unit in the series
senses smoke, all units will alarm. To determine which Smoke Alarm initiated an
alarm, see table:

On Initiating Alarms

Red LED flashes rapidly

On All Other Alarms

Red LED is Off

Interconnect units within a single family residence only. Otherwise all
households will experience unwanted alarms when you test any unit in the
series. Interconnected units will only work if they are wired to compatible
units and all requirements are met. This unit is designed to be compatible
with: First Alert

Smoke Alarm Model SA9120B and BRK Electronics

Smoke Alarm Models 100S, 9120, 9120B, 7010, 7010B; BRK Electronics

Heat Alarm Models HD6135F, HD6135FB; Smoke/CO Alarm Model
SC9120B; Relay Module RM4.

Interconnected units must meet ALL of the following requirements:

• A maximum of 18 compatible units may be interconnected

(Maximum of 12 Smoke Alarms).

• The same fuse or circuit breaker must power all interconnected units.

• The total length of wire interconnecting the units should be less than

1000 feet (300 meters). This type of wire is commonly available at
Hardware and Electrical Supply stores.

• All wiring must conform to all local electrical codes and NFPA 70 (NEC).

Refer to NFPA 72, NFPA 101, and/or your local building code for further
connection requirements.

FOLLOW THESE INSTALLATION STEPS

STAND-ALONE ALARM ONLY:

•

Connect the white wire on the power connector to the neutral wire in
the junction box.

•

Connect the black wire on the power connector to the hot wire in the
junction box.

•

Tuck the orange wire inside the junction box. It is used for interconnect
only.

INTERCONNECTED UNITS ONLY:

Strip off about 1/2” (12 mm) of the plastic coating on the orange wire
on the power connector.

•

Connect the white wire on the power connector to the neutral wire in
the junction box.

•

Connect the black wire on the power connector to the hot wire in the
junction box.

•

Connect the orange wire on the power connector to the interconnect
wire in the junction box. Repeat for each unit you are interconnecting.
Never connect the hot or neutral wires in the junction box to the orange
interconnect wire. Never cross hot and neutral wires between Alarms.

STAND-ALONE ALARM ONLY:
•

If you are only installing one Smoke Alarm, restore power to the
junction box.

INTERCONNECTED UNITS ONLY:
•

If you are interconnecting multiple Smoke Alarms, repeat steps
1-5 for each Smoke Alarm in the series. When you are finished,
restore power to the junction box.

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