AFA4000/E VAV Airflow Controller / p.22
3.6.6.4 Sash position sensor
Auxiliary sash position sensor used for volumetric output and sash high alarms with dedicated
input on the Econ power supply.
3.6.6.5 Mains fail battery unit
Auxiliary plug-in battery unit has a mains fail alarm. This requires inverter type control only and
is not to be used if the Econ power supply is fitted.
3.6.6.6 Auto sash keypad
RJ45 connection for the Auto Sash keypad. Refer to sections 4 and 7.6 for Auto Sash functions.
3.7 Functions
3.7.1 Airflow functions
The AFA4000/E airflow display can be set up using the pushbutton menus to display airflow in
units of m/sec or fpm and can also be set to show plain text Air Safe & Air Fail only.
The AFA4000/E has 4 programmable airflow alarms:
• Airflow reading above warning level
(for example, > 0.45 m/sec)
• Green Safe LED Halo illuminated
• Air Safe displayed in the status window or main window if
Show Airflow is set to OFF.
• Airflow reads between warning level and air fail level (for
example, > 0.4 m/sec and < 0.45 m/sec)
• Amber Warning LED Halo illuminated.
• Air Safe displayed in the status window or main window if
Show Airflow is set to OFF.
• Airflow reads below alarm level for longer than the warning to
low air delay time
• Red Alarm LED Halo illuminated
• Air Fail displayed in the status window or main window if
Show Airflow is set to OFF.
• Audible alarm sounds - can be muted by pressing the Mute
pushbutton
To Next Page
Loading...