Kidde KN-COPP-3 User Manual page 18

Operation
The Peak Level Memory Button
Although the peak level feature will display levels below 30 PPM, these levels
will not result in an alarm no matter how long the device is exposed to these lev-
els.
The peak level feature is helpful in identifying CO occurrences below 30 PPM.
Although the unit will not automatically display levels below 30 PPM, it will
detect and store these readings in memory. By pressing the peak level button,
concentration levels as low as 11 and up to 999 PPM will be displayed.
Concentrations of CO between 0 and 30 PPM can often occur in normal, every-
day conditions. Concentrations of CO below 30 PPM may be an indication of a
transient condition that may appear today and never reappear. Just a few
examples of conditions and/or sources that may cause readings are heavy auto-
mobile traffic, a running vehicle in an attached garage, an appliance that emits
CO when starting up, a fire in a fireplace or charcoal in a nearby barbecue. A
temperature inversion can trap CO generated by traffic and other fuel burning
appliances causing readings of CO.
Normally, the digital display will read "0" and under certain conditions you may
notice levels of 30 or more for short periods of time, by using the Peak level
memory feature on the Kidde CO alarm you can view concentrations of CO
between 11 and 30 PPM. Use the concentrations shown in memory as a tool in
identifying the source of the CO. It may be helpful to purchase additional Kidde
CO Alarms to place in different locations throughout your house to isolate the
CO source. Monitor the CO concentrations shown in the peak level memory to
see if readings occur in certain areas at certain times of the day, or near a par-
ticular appliance.
Once the source is located, correcting the problem may be as easy as opening a
window, venting an appliance, backing a running car out of the garage a safe
distance from living quarters, closing the garage door, and letting the car warm
up outside. It could be possible that a weather condition caused the reading and
the condition may or may not happen again.
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