1.1 General Description
All systems comprise of the following components :-
1 – AFA 500 Alarm unit,
1 – AC power supply
If the Sash Alarm System option is ordered there will also be a sash micro switch or proximity
switch.
If the Remote Airflow Sensor is ordered there will be remote sensor provided
Operator Features --- the alarm has the following operator features :-
Safe LED - Green LED (Not flashing) will be displayed if the airflow is greater than the
Low air alarm point.
Alarm LED - Red LED (Not flashing) will be displayed if the airflow is lower than the
Low air alarm point.
Sash High - Red LED (Flashing) will be displayed when the Sash is raised above
the max safe working opening.
Audible Alarm -- the Audible alarm will sound ( can be muted ) in the Air Fail and the
Sash High alarm condition
Night Set-back -- when the Night Setback input is activated the Audible alarm will be muted
and the Green LED will flash on/off
ENTER --- the alarm has an Enter button -- this is multi-functional as follows :-
Press Enter momentarily when Low Air alarm is sounding will mute the alarm
Press Enter momentarily when Sash High alarm is sounding will mute
the alarm and initiate a repeat timer that will re-sound the alarm if the Sash is
not lowered to a safe position before the end of the time period
Press Enter for 5 secs will gain access to Calibration mode
SET -- used during the airflow Calibration of the alarm
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