Kidde KN-COPP-B User Manual page 12

Features and Operation of Digital Display Model
(continued)
Peak Level Display (Continued)
The peak level feature is helpful in identifying low level CO occur-
rences below 30 PPM. Although the unit will not automatically
display levels below 30 PPM, it will detect and store these read-
ings 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, everyday 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 low level readings are heavy automobile 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.
Some CO conditions may start out as low level leaks but could
develop into CO concentrations that could become harmful. If this
happens, the CO alarm will detect the dangerous level and alarm,
notifying you and others of the conditions. DO NOT ignore high
concentration readings above 30 PPM or a CO alarming device
that is in alarm. Refer to page 18 for more details.
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