AFA4000/E VAV Airflow Controller / p.171
9.3 Optional input function – close sash alarm
A Close Sash alarm informs the user that the fume cupboard sash has been left open. The alarm
can be set with a time delay before activation, this allow the user to briefly leave the fume
cupboard sash open. The alarm can be set to repeat if the sash is left open for prolonged
periods.
The alarm function uses a PIR sensor and uses the sash position sensor to monitor the sash
height.
Figure 75: Typical connection diagram with sash position sensor
To Setup the Close Sash Alarm with a sash position sensor:
Press the ↑ and ↓ arrows to scroll through the menu list and press Mute to select the required
option.