BRK electronic FCD2N User Manual

1. Plug the unit into a standard UNSWITCHED 120V AC outlet. In horizontally

or vertically positioned wall outlets, mount unit with Test/Silence button
facing upward.

2. Make sure green light shines when you plug in the unit. It will shine contin-

uously when unit is receiving power. The horn will “chirp” once during
power up, or when power is restored after an outage.

3. Test by pressing the Test/Silence button firmly until the unit sounds: four

loud beeps, pause, 4 beeps. The sequence should last 5-6 seconds.
During testing, the green, yellow, and red lights flash. This is normal.

4. While testing the unit, have a family member check that the horn can be

easily heard from the sleeping areas. The unit should be located where it
can wake you if it alarms at night.

5. Find the pair of self-adhesive labels included with this CO Alarm. 

• On each label write in the phone number of your emergency responder

(like 911) and a qualified appliance technician.

• Place one label near the CO Alarm, and the other label in the “fresh air”

location you plan to go if the alarm sounds.

NOTE: A qualified appliance technician is defined as “a person, firm, corpora-
tion, or company that either in person or through a representative, is engaged in
and responsible for the installation, testing, servicing, or replacement of heating,
ventilation, air conditioning (HVAC) equipment, combustion appliances and
equipment, and/or gas fireplaces or other decorative combustion equipment.”

1. Operate the Test/Silence button.

2. Call your emergency services, fire department or 911. Write down the

number of your local emergency service here:

__________________________________________________________________

3. Immediately move to fresh air—outdoors or by an open door or window.

Do a head count to check that all persons are accounted for. Do not re-
enter the premises, or move away from the open door or window until the
emergency services responder has arrived, the premises have been aired
out, and your CO Alarm remains in its normal condition.

4. After following steps 1-3, if your CO Alarm reactivates within a 24-hour

period, repeat steps 1-3 and call a qualified appliance technician to inves-
tigate for sources of CO from fuel-burning equipment and appliances, and
inspect for proper operation of this equipment. If problems are identified
during this inspection have the equipment serviced immediately. Note any
combustion equipment not inspected by the technician, and consult the
manufacturers’ instructions, or contact the manufacturers 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
garage or adjacent to the residence. Write down the number of a qualified
appliance technician here: 

_________________________________________________________________

Because CO may dissipate by the time an investigator arrives, it may be diffi-
cult to locate the source of CO. See  “What You Need to Know About CO.”
BRK Brands, Inc. shall not be obligated to pay for any carbon monoxide
investigation or service call.

Push and hold the Test/Silence button on the cover until a loud alarm
sounds— 4 beeps, a pause, then 4 beeps. The alarm sequence should last for
5-6 seconds. If the CO Alarm ever fails to test properly, replace it immediately.

If the CO Alarm is not working properly, refer to the “Limited Warranty” at the
end of this manual.

To keep the CO Alarm in good working order:
•

Test it every week using the Test/Silence button.

•

Vacuum the CO Alarm cover at least twice a year, using the soft brush
attachment. Test the CO Alarm again after vacuuming.

Household cleaners, aerosol chemicals and other contaminants can affect the
sensor. When using any of these materials near the CO Alarm, make sure the
room is well ventilated.

If your home is being fumigated, unplug the unit temporarily and put it where
it will not be exposed to chemicals or fumes. When fumigation is complete
and all traces of fumes clear, plug the unit back in and retest it.

The Silence Feature is intended to temporarily silence your CO Alarm’s alarm
horn while you correct the problem—it will not correct a CO problem. While
the alarm is silenced, it will continue to monitor the air for CO.

When CO reaches alarm levels, the alarm will sound— repeating horn pattern:
4 beeps, a pause, 4 beeps, etc. Press and hold the Test/Silence button until
the horn is silent. The initial Silence cycle will last approximately 4 minutes.

After initial 4-minute Silence cycle, the CO Alarm re-evaluates present CO 
levels and responds accordingly. If CO levels remain potentially dangerous—
or start rising higher—the horn will start sounding again.

Is silent for only 4 minutes, then
starts sounding loudly—4 beeps,
then a pause, 4 beeps, then a
pause. Red light continues 
flashing...

CO levels are still potentially
dangerous.

Remains silent. 
Only the green light is on....

Unit has returned to 
normal operation.