AFA4000/E
VAV Airflow Controller / p.39
4.2.2
Auto Sash Controller with Sash Low micro-switch
A Sash Low Micro-Switch can be specified for fitting by TEL or by the fume hood manufacturer.
The switch can be arranged to be open / closed when the sash is closed, depending on fitting.
The wiring arrangement must be modified for installation and the operational requirements of
the fume hood.
The following functionality is available:
•
The sash automatically drives to the bottom position, when the user is not present.
•
Press the
Down
pushbutton to drive the sash to the bottom position, when the user is
present.
•
The
Up
pushbutton is disabled.
4.2.3
Auto Sash Controller with Sash Low proximity switch
A Sash Low Proximity Switch can be specified for fitting by TEL or the fume hood manufacturer.
The switch can be arranged to be open/closed when the sash is closed, depending on fitting. The
wiring arrangement must be modified for installation and the operational requirements of the
fume hood.
The following functionality is available:
•
The sash automatically drives to the bottom position, when the user is not present.
•
Press the
Down
pushbutton to drive the sash to the bottom position, when the user is
present.
•
The
Up
pushbutton is disabled.
4.2.4
Auto Sash Controller DDA profile
The sash controller can be set to operate a DDA style fume hood with a moveable base. A
secondary sash position sensor is fitted to the base to detect the base position. Once a base
movement has been detected, the calibrated sash open height from the base will be maintained
when the sash is driven open, and the sash will close to the new base position when the sash is
driven closed or auto closes and will give the following operation:
Summary of Contents for AFA4000/E
Page 1: ...AFA4000 E VAV Airflow Controller Installation and operating manual Issue 2...
Page 57: ...AFA4000 E VAV Airflow Controller p 57 Figure 22 AFA4000 E inverter control connections...
Page 58: ...AFA4000 E VAV Airflow Controller p 58 Figure 23 AFA4000 E damper control connections...
Page 59: ...AFA4000 E VAV Airflow Controller p 59 Figure 24 AFA4000 E typical connection diagram...
Page 60: ...AFA4000 E VAV Airflow Controller p 60 Figure 25 AFA4000 E AS typical connection diagram...
Page 62: ...AFA4000 E VAV Airflow Controller p 62 Figure 27 SM7 airflow sensor dimensions...
Page 96: ...AFA4000 E VAV Airflow Controller p 96 6 9 Auto Sash System Control Box general wiring diagram...
Page 158: ...AFA4000 E VAV Airflow Controller p 158...
Page 182: ...AFA4000 E VAV Airflow Controller p 182 Figure 79 Connection diagram with RS232 485 converter...
