Assortment / System Description

VAV application
Presence control
18
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18.31 Presence control
The HVAC application can also be controlled by presence through the use of a
presence detector.
The HVAC application can be configured for each room to react to presence for
each room and regardless of the room operating mode.
Description Name Default value
Presence operating mode for Comfort
1:None
2:Considered presence
3:Considered absence
4:Considered presence & absence
PscModCmf 4:Considered
presence &
absence
Presence operating mode Pre-Comfort PscModPcf 4:Considered
presence &
absence
Presence operating mode for Economy PscModEco 1:None
Present operating mode for Protection PscModPrt 1:None
The applicable delays for the HVAC application in a room can also be
configured for each room.
Description Name Default value
Switching delay for presence SwiDlyPrst 5 Min
Switching delay for absence SwiDlyAbst 5 Min
18.32 Static calibration
Under static calibration, the values are configured in the application function
from the data sheet on the VAV box. Per channel (supply air or extract air),
enter two values: Volume flow in m
3
/h and the associated box coefficient c.
Description Name Default value
Nominal air volume flow AirFlNom 100 [m
3
/h]
Supply air VAV box coefficient VavSuBoxCoef 150 [m
3
/hSqrtPa]
18.33 Dynamic calibration
Dynamic calibration can be only conducted during operation with a network and
switched-on VAV system.
The DXR2 web server during commissioning is used to conduct dynamic
calibration of a VAV box. The DXR2 web server must be connected. After
logging on, the use is provided a Favorites view for calibration. The overview
includes all relevant parameters and the data point for automatically
conducting dynamic calibration. The following list displays an overview of the
parameters on dynamic calibration for each VAV box.
A detailed guide on dynamic calibration and a video guide is available from the
Siemens download center www.siemens.com/bt/download.