Laboratory Exhaust Air Terminal - Siemens 125-5033 Owner's Manual

Pressing the Emergency Purge button a second time reverts the Fume Hood Controller to
normal operation for the current conditions.
HI/LO: HI/OFF Select button – Pressing this button changes the controller from a high flow
setpoint to a low flow setpoint and back again or changes the controller from a high flow
setpoint to and OFF state and back again.
Auxiliary Button – The Auxiliary buttons are not used currently.
For more information on the ODP, see the Fume Hood Controller Operator Display Panel
User's Card (125-1976).

Laboratory Exhaust Air Terminal

The Laboratory Exhaust Air Terminal is a pre-packaged, easy to install, airflow measurement
and control station. See Figure 5. It combines an orifice plate flow sensor, differential
pressure transmitter, an electronic actuator assembly, or No. 3 pneumatic actuator, and
Analog Output-Pneumatic (AO-P) Module, and butterfly damper in a 20 gauge 316 stainless
steel duct section.
This arrangement provides fast acting, stable, and precise VAV fume hood exhaust airflow
control.
Siemens Building Technologies, Inc.
Figure 4. Operator Display Panel.
Product Overview
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