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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.
• The alarm cannot be operated from power
derived from a square wave, modified square
wave or modified sine wave, inverter. These
types of inverters are sometimes used to
supply power to the structure in off grid
installations, such as solar or wind derived
power sources. These power sources produce
high peak voltages that will damage the alarm.
• Never disconnect the power from an
AC powered unit to stop an unwanted alarm.
Doing so will disable the unit and remove your
protection. In the case of a true unwanted alarm
open a window or fan the smoke away from the
unit. The alarm will reset automatically when it
returns to normal operation.
• 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. You must test to
ensure proper installation.
AC INSTALLATION WARNINGS
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.
• Do not restore power until all alarms are
completely installed. Restoring power before
installation is complete may result in serious
electrical shock, injury or death.
• Turn off the power to the area where the
alarm is installed before removing it from
the mounting bracket. Failure to turn off the
power first may result in serious electrical
shock, injury or death.
• 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.
• Attempting to disconnect the power connector
from the unit when the power is on may result
in electrical shock, serious injury or death.
• Failure to meet any of the above requirements
could damage the units and cause them to
malfunction, removing your protection.
• 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.
• This unit must be powered by a 24-hour,
120V AC pure sine wave, 60Hz 0.1A 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.
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.
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