TEL AFA4000/E, Installation And Operating Manual

Page: 188 / 210

AFA4000/E VAV Airflow Controller / p.188
12.3.2 Auto Sash settings
12.3.2.1 Stand alone
Auto-Open can be set to Disabled, Enabled or Enabled if Auto-Closed.
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 screen. For example, * User present .
To enable Auto-Open, press and hold the Mute button for 5 seconds or until the ‘ * ’ is displayed.
To disable Auto-Open, press and hold the Mute button for 5 seconds or until the ‘ * ’ disappears.
Note: If set to Enabled if Auto-Closed, the sash will only Auto-Open if the sash has Auto-Closed.
Closing the sash manually or by using the pushbuttons, will inhibit the Auto-Open when the user
returns to the fume hood.
12.3.2.2 AFA4000/E/AS
The Auto Sash can be set to be Disabled , Enabled or USR enabled ( User enable / disable ).
To User enable the Auto Sash, press and hold the Mute and
↑
buttons for 1 second.
To User disable the Auto Sash, press and hold the Mute and
↓
buttons for 1 second. USR
disabled displays in the Status window.
Note: Auto open can be set to disabled / enabled / enabled if auto closed. When set to enabled
and when auto closed, the sash will only Auto open when the sash has auto closed.
Closing the sash manually or by using the pushbuttons will inhibit the auto open, when
the user returns to the fume cupboard.
12.3.3 Alarm indications
Auto Sash alarm indications are described in section 13.3.