Humidity Control - Siemens Climatix Series Basis Document

Prerequisite
Parameter
Parameter
Fan stage 1
Fan stage 2
Fan stage 3
Example
Prerequisite
Enable
Parameter
Room hum sensor
Supply air hum sensor
Outs air hum sensor
Cooling
Siemens
Building Technologies
5.10.5 Max limitation fan
Direct expansion evaporator is enabled:
Main Index > Configuration > Configuration 1 > Cooling = DX...
Main Index > Configuration > Configuration 1 > Cooling 2= DX...
Main Index > Unit > Temp control > Cooling > Max limitation fan
Main Index > Unit > Temp control > Cooling 2 > Max limitation fan
Range
0...100 [%]
0...100 [%]
0...100 [%]
FanStage1 = 30 %
StartStage2 = 40 %
In this case, the controller output for fan state 1 is limited to 30%. So that the
switch-on point of 40% for expansion evaporator stage 2 is never achieved.
5.11

Humidity control

5.11.1 General
This section described parameters and settings relating to humidification and de-
humidification.
The required sensors and functions are enabled in configuration 1, configuration 2
and configuration I/Os.
Cooling must also be enabled for dehumidification.
Main Index > Configuration > Configuration 1
Range
– No
– Yes
– No
– Yes
– No
– Yes
–
– No
– Water
– DX 1step
Basis Document Siemens Climatix Control System
Standard application AHU
BDCX.100820.01GB
Functions
Function
Set the maximum allowable expansion evaporator output
for the given active fan stage. The value limits the maxi-
mum possible refrigeration demand. The settings depend
on expansion evaporator and fan output.
Must be clarified with the manufacturer as required!
Allowed expansion evaporator output when the fan is op-
erating on stage 1 or using the setpoint with the setpoint
for stage 1.
Allowed expansion evaporator output when the fan is op-
erating on stage 2 or using the setpoint with the setpoint
for stage 2.
Allowed expansion evaporator output when the fan is op-
erating on stage 3 or using the setpoint with the setpoint
for stage 3.
Function
Room humidity sensor.
Supply air humidity sensor.
Outside air humidity sensor.
Only required for dehumidification!
– No (additional) cooling register.
– (additional) cold water register.
– (additional) 1 step direct expansion evaporator aggre-
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