Siemens 125-5033

VI Siemens Building Technologies, Inc.
Applications .................................................................................................................. 11
Fume Hood Controller: 2-Position Constant Volume ............................................... 11
Basic Operation ............................................................................................................ 12
High and Low Exhaust Flow Control ......................................................................... 12
Control Loops ......................................................................................................... 12
Calibration ................................................................................................................. 12
DO3 Output Functionality .......................................................................................... 13
Warning and Alarm Features .................................................................................... 13
Warning Operation .................................................................................................. 13
Alarm Operation ...................................................................................................... 13
Alarm Strategies ..................................................................................................... 14
Emergency Purge Feature ........................................................................................ 14
Emergency Purge Operation .................................................................................. 14
Emergency Purge Strategies .................................................................................. 15
Fail-safe Operation .................................................................................................... 16
Fume Hood Controller ............................................................................................ 16
ODP ........................................................................................................................ 16
Differential Pressure Transmitter ............................................................................ 16
Electronic Actuator Assembly ................................................................................. 16
Pneumatic Actuator ................................................................................................ 16
AO-P Module .......................................................................................................... 16
Point Database .............................................................................................................. 17
Troubleshooting ........................................................................................................... 20
Basic Service Information ......................................................................................... 20
Preventive Maintenance ............................................................................................ 20
Safety Features ......................................................................................................... 21
Controller LEDs ......................................................................................................... 21
Glossary ........................................................................................................................ 22
Index .............................................................................................................................. 26