Siemens Industry, Inc. Owner's Manual 125-5093
Building Technologies 2015-10-14
Chapter 2 – Applications
Basic Operation
The BACnet Fume Hood controller provides Direct Digital Control (DDC) technology for
pressure independent Variable Air Volume (VAV) and Constant Volume (CV)
laboratory fume hood applications.
Application 6740 Fume Hood Controller 2-Position
Constant Volume
This application is designed for use with a constant volume or two-position fume hood
in a manifold fume hood exhaust system. Two-position fume hoods have an individual
exhaust damper connected to a central fan. The application modulates the exhaust
flow control device to maintain a high or low flow setpoint based on inputs from the
ODP (Operator’s Display Panel), digital input, an exhaust airflow sensor, and the
controller setpoints.
Application 6740 Control Diagram.
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