AFA4000/E VAV Airflow Controller / p.186
12.2.3.1 AFA4000/E/AS only
When the Auto open feature is enabled in the menu and is switched on from the keypad, ‘*
displays in the left-hand corner of the Status Window, for example * User present.
To enable Auto open, press and hold Mute. Then press and hold ↑ for 1 second or until the ‘*
symbol displays.
To disable Auto open, press and hold Mute. Then press and hold ↑ for 1 second or until the ‘*’
symbol disappears.
12.2.4 Building Management System (BMS) inputs
The sash can be set to operate with the following BMS inputs:
Single start or end of day operation from BMS input.
The sash will only drive when the user is not present and the sash
beam is clear.
EV (Emergency)
Open/Close
Note: EV audible alarm tone will sound when the EV input is
active.
The sash will only drive if the user is not present and the sash
beam is clear. In EV mode the sash can be manually moved when
the user is detected. The sash will then auto drive closed/open
again, when the EV input is still active and when the user is not
detected.
Note: An audible alarm tone will sound whilst the fire alarm
input is active.
The sash will only drive when the user is not present and the sash
beam is clear. In Fire Alarm mode, the sash can be manually
moved if the user is detected. The sash will then auto drive closed
/ open again, when the EV input is still active and when the user
is not detected.
12.2.5 Sash lock
The sash can be set to Lock, Auto Sash or Drive Inhibited, when the sash is set to a calibrated
position (for example fully open). An audible and visual alarm will activate following a pre-set
alarm delay period, to remind the user to lower the sash.
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