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Siemens
Standard application AHU
CE1P3977en_02
Building Technologies
Functions
01.02.2010
Parameter
Range
Function
– DX2steps
– DX3steps
gate.
– (additional) 2 step direct expansion evaporator aggre-
gate.
– (additional) 3 step direct expansion evaporator aggre-
gate.
Humidity control
– No
– Hum
– Dehum
– Hum+Dehum
– No humidification and dehumidification.
– Humidification only.
– Dehumidification only.
– Humidification and dehumidification.
Main Index > Configuration > Configuration 2
Parameter
Range
Function
Hum control mode
– No
– Room
– Supply
– RoomCasc
Type of humidity control.
– No humidity control.
– Room control only.
– Supply air temperature control only.
– Room / supply air temperature cascade control.
Hum control unit
– Relative
– Absolute
– CacsRelAbs
Type of humidity control.
– Relative humidity control.
– Absolute humidity control.
– Cascade control with relative room and absolute supply
air humidity control.
Hum stpt selection
– Hum/Dehum
–
– +/- HalfDz
– Hum+Dz
– dehum-Dz
Predefined variants for humidity setpoints:
– Humidification and dehumidification setpoint is entered
directly.
– Base setpoint and dead zone is entered.
– Humidification setpoint and dead zone is entered.
– Dehumidification setpoint and dead zone is entered.
Dehum tmp prio
– No
– Yes
Dehumidification is reduced dependent on the heating
output:
– Function not enabled.
– As of 90%, heating valve position reduces dehumidifica-
tion.
Dew point control
– No
– Yes
Dew point monitoring.
Hum deviation alarm
– No
– Room/Exh
– Supply
– Sply+RmExh
Monitors setpoint/actual value of humidification. An alarm
is triggered for deviations over a certain period:
– No monitoring.
– Monitors room humidity only.
– Monitors supply air humidity only.
– Monitors supply air and room humidity.
Humidifier pump
– No
– Yes
– Yes+Kick
– No humidifying pump.
– Humidifying pump without pump kick.
– Humidifying pump with pump kick.
Hum pump alarm
– No
– Alarm
– Fdbk
– Both
– Pump without alarm or feedback.
– Pump with alarm.
– Pump with feedback.
– Pump with alarm and feedback.
Humidifier fdbk
– No
– Yes
– Humidifier without feedback.
– Humidifier with feedback.
Feedback can only be used as alarm, when Contact function = NO (Normally
Open) and the element is set to ON.
Configuration
Note
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 84
