Commissioning Instructions
15
Siemens Industry, Inc.
A6V11668992
Building Technologies
Restricted
2019-03-12
Central Functions can also be bundled together in order to collect and distribute Group
Member data to / from multiple other Central Function DXRs. All central functions have
“bundled” variants that are used as subordinate central functions to one master. If one
central function may not be enough to control all of the data from the room controllers,
a higher-level Central Function DXR can be used to communicate between the lower
level central functions to the AHU/primary plant.
The following diagram shows the hierarchy of bundled functions, and how the Group
Members and Masters communicate with one another. The bundled Central Functions
collect data from each floor, while the corresponding Master Central Function collects
the data from the subordinate bundled members. For more information on bundling,
see ABT Site Help.
The following section provides an overview on the ability and limitations of SplyAir11,
the main Central Function used for Duct Pressure Reset. For information on other
central functions, see ABT Site Help.
Supply Chain Air 11
The application function “Supply chain air 11” (SplyAir11) collects the demand signals
of the different rooms via group mechanism and provides the setpoint and demand for
the central air handling unit. SplyAir11 contains multiple lower level application
functions, all of which can be used to control the air demand in different ways
depending on the application. The complete list of outputs can be found in the ABT
Site Application help.