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Siemens
Standard application AHU
CE1P3977en_02
Building Technologies
Configuration
01.02.2010
Parameter
Range
Function
Fan comp room
tmp
No
Yes
Room-temperature dependent fan compensation.
Requirement: A room or return air sensor is enabled.
Fan comp air
quality
No
Yes
Air quality-dependent fan compensation. Analog input for the sensor is
enabled.
Fan cmp humidity
No
Yes
Room humidity-dependent fan compensation.
Requirement: Room humidity sensor is enabled.
Fan comp outs tmp No
Yes
Outside air-temperature dependent fan compensation.
Requirement: Outside air sensor is enabled.
Fan htg / clg
The fan is further used as a heating or cooling sequence.
No
No sequential impact on the fan.
Htg
Only impacts fan during the heating sequence.
Clg
Only impacts fan during the cooling sequence.
Htg+Clg
Impact on fan in both sequences.
Tmp stpt selection
Predefined variants for temperature setpoints:
Htg+Dz
heating setpoint and dead zone are entered.
Cooling setpoint = Heating se dead zone.
Htg/Clg
Heating and cooling setpoint is entered directly.
+/- HalfDz
Base setpoint and dead zone is entered.
Heating setpoint = Base setpoint – half dead zone.
Cooling setpoint = Base se half dead zone.
Clg-Dz
Cooling setpoint and dead zone is entered.
Heating setpoint = Cooling setpoint – dead zone.
Ext stpt function
Sets whether the external setpoint acts as setpoint compensation or in
absolute terms.
Value corresponds to the comfort setpoint dependent on the switch
Tmp setpoint selection.
If the switch Tmp setpoint selection is on HtgClgSpv, the value of the
setpoint compensation corresponds to the heating setpoint and the
cooling setpoint is calculated from the difference between the entered
setpoints for heating and cooling.
Relative
Setpoint compensation.
Absolute
Absolute
Room tmp mix
Selection of room temperature used for control if more than one ex-
ists.
Average
Average.
Minimum
Lowest temperature.
Maximum.
Highest temperature.
RoomSnsr1
Room sensor 1.
RoomSnsr2
Room sensor 2.
RoomUnit1
Room unit 1 (not yet implemented).
RoomUnit2
Room unit 2 (not yet implemented).
Room draught limit No
Yes
Limitation to maximum/minimum supply air temperature dependent on
room temperature.
Requirements: One cascade control is enabled.
Function minimizes draughts caused by too large a difference be-
tween supply air and room temperature.
Sequence fan clg
Sets sequence of fan sequence and cooling sequence.
Requirement: Fan htg / clg is enabled.
Fan-Clg
Fan sequence before cooling sequence.
Clg-Fan
Cooling sequence before fan sequence.
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 161