1.4 Events / actions
Safe airflow
• Airflow above alarm level ( eg > 80 fpm )
• Green LED on
Low airflow
• Airflow below alarm level for longer than the low air delay time ( 5 secs)
• Red LED on ( Not flashing )
• Audible alarm sounds ( ‘Beep’ on/off every 1 sec ) -- can be muted via Enter pushbutton
• Low air relay R1 operates.
Reset : -- when airflow rises above Low air level for longer than the low air to
safe air delay time ( 2 secs ) the Low air alarm resets automatically
Sash High
• When the input configured as Sash High is activated ( Micro switch or Proximity switch )
• Red LED on ( Flashing )
• Audible alarm sounds ( ‘Beep’ on/off every 1 sec )
• Audible can be muted via Enter pushbutton -- this silences the alarm and initiates a repeat
timer ( factory set to 5 mins ) After the delay time the alarm re-sounds ( and can be re-
muted). During this time the Red LED flashes on / off.
Reset: -- when Sash lowered to safe position and input de-activated.
Night set-back
• When input configured as Night set-back is activated
• Green LED on ( Flashing)
• Audible alarm muted
Airflow Sensor Error
• The connection and each element of the airflow sensor are monitored at all times. In the
event of a problem with the sensor the audible alarm will sound using a different
and distinctive tone best described as ‘ a modulating siren effect’
• The audible alarm can only be silenced by re-connecting the sensor ( if a remote sensor is
being used ) or switching the power to the unit off.
2.1 Quick Start Installation
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