Installation Instructions

7.
CO present (before Alarm sounds): When the Alarm detects CO the red LED
flashes in accordance with Table B. This helps locate CO leaks as the unit gives an
immediate indication.
(Without this feature the CO would need to be present for typically 90 minutes for an
alarm sound to be given). Note the red LED flashes may be triggered by CO
produced by gas appliances, from car engines or from nearby barbecues. This is
usually not a concern, unless the red LED flashes persist until the alarm sounds and
the CO source is unknown.
The display models will display CO concentrations greater than 30ppm in
accordance with Table B.
NOTE: The CO Alarm may sound if cigarette smoke is blown into it, or aerosols are
released nearby.
CO ALARM MEMORY
The CO Alarm memory is an important feature of the CO Alarm where, even if the
house is unoccupied during an alarm condition, it warns the homeowner that the unit
has previously detected CO gas and been in alarm. The memory feature has two
operation modes:
- memory indication for 24 hour period after alarm.
- memory recall on demand
24 hour memory indicators: After alarm, the RED LED will flash at different rates
every 50 seconds depending on the level of CO detected - see Table C.
Memory recall on demand: To review the memory status after initial 24 hours,
press and hold the test button, the red LED will flash in accordance to Table C.
Display models will show the peak level of CO measured.