User Guide

2524
CAUTION
The alarm only indicates the presence
of carbon monoxide gas at the sensor.
Carbon monoxide gas may be present
inother areas.
Individuals with certain medical problems
should consider using detection devices with
lower COHb alarming capabilities and consider
warning devices which provide audible and visual
signals for carbon monoxide concentrations
under 30ppm.
SYMPTOMS OF CO POISONING
The following symptoms are related to CARBON
MONOXIDE POISONING and are to be discussed
with ALL members of the household:
• Mild Exposure: Slight headache, nausea,
vomiting, fatigue (often described as
‘Flu-like’ symptoms).
• Medium Exposure: Severe throbbing
headache, drowsiness, confusion, fast
heart rate.
• Extreme Exposure: Unconsciousness,
convulsions, cardiorespiratory failure, death.
• Many cases of reported CARBON MONOXIDE
POISONING indicate that while victims
are aware they are not well, they become
so disoriented they are unable to save
themselves by either exiting the building or
calling for assistance. Young children and
household pets are typically the first affected.
CARBON MONOXIDE CO PRECAUTIONS
WHAT IS CARBON MONOXIDE?
Carbon Monoxide (CO) is an invisible, odorless,
tasteless gas produced when fuels do not burn
completely, or are exposed to heat (usually fire).
These fuels include: wood, coal, charcoal, oil,
natural gas, gasoline, kerosene, and propane.
Common appliances are often sources of
CO such as oil or gas burning furnaces, gas
ovens, wood-burning fireplaces, and charcoal
grills. If they are not properly maintained, are
improperly ventilated or malfunction, CO levels
can rise quickly. CO is a real danger now that
homes are more energy efficient. “Air-tight”
homes with added insulation, sealed windows,
and other weatherproofing can “trap” CO
inside. Electrical appliances typically do not
produce CO. The Nest Protect CO sensor meets
the alarm response time requirements of the
American National Standard ANSI/UL 2034.
Standard alarm times are as follows:
• At 70ppm, the unit must alarm within
60-240 minutes.
• At 150ppm, the unit must alarm within
10-50 minutes.
• At 400ppm, the unit must alarm within
4 to 15 minutes.
WARNING
This carbon monoxide alarm is designed
to detect carbon monoxide from any
source of combustion. It is NOT designed
to detect any other gas.
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.
This information is available as a label provided
in the box. Stick it in a spot where everyone can
see it, like the refrigerator.
THE FOLLOWING CONDITIONS CAN RESULT IN
TRANSIENT CO SITUATIONS
1. Excessive spillage or reverse venting of fuel
burning appliances caused by:
I) Outdoor ambient conditions such as wind
direction and/or velocity, including high
gusts of wind; heavy air in the vent pipes
(cold/humid air with extended periods
between cycles).
II) Negative pressure differential resulting
from the use of exhaust fans.
III) Simultaneous operation of several fuel
burning appliances competing for limited
internal air.
IV) Vent pipe connection vibrating loose from
clothes dryers, furnaces, or water heaters.
V) Obstructions in or unconventional vent pipe
designs which amplify the above situations.
2. Extended operation of unvented fuel burning
devices (range, oven, fireplace, etc.).
3. Temperature inversions which can trap
exhaust gases near the ground.
4. Car idling in an open or closed attached
garage, or near a home.
5. NEVER bring a charcoal grill inside and
ALWAYS operate a portable generator
outside, a safe distance from the house,
and well away from windows.
WHAT TO DO IN CASE OF A CARBON
MONOXIDEALARM
WARNING
Actuation of your CO alarm indicates the
presence of carbon monoxide (CO) which
can KILL YOU.
If alarm signal sounds:
1) Operate reset/silence button (Press
Nest button);
2) Call your emergency services [fire dept. or 911];
PHONE NUMBER:
3) Immediately move to fresh air – outdoors or
by an open door/window. Do a head count to
check that all persons are accounted for. Do
not reenter the premises nor move away from
the open door/window until the emergency
services responders have arrived, the
premises have been aired out, and your alarm
remains in its normal condition.
4) After following steps 1 – 3, if your alarm
reactivates within a 24-hour period, repeat steps
1 – 3 and call a qualified appliance technician
PHONE NUMBER:
to investigate 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