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Access 4.x |
Humidification + Dehumidification |
The combined mode utilizes both: Humidification and override of the temperature sequence for dehumidification. The setpoint for desired room/extract air humidity is used as a reference for two new setpoints: "Humidification setpoint" and "Dehumidification setpoint". The setpoints are separated by the neutral zone.
Configuration example of combined humidification + dehumidification |
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Variable |
Available options & Selection |
Note |
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Activate Humidity control |
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Configuration > Functions > Function activation |
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Humidity control |
… | Humidification + Dehumidification | |
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Configure function |
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Configuration > Functions > Humidity control |
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Humidity control |
Humidification + Dehumidification |
Indication of what function has been activated |
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Select sequence for dehumidify |
... | Cooling |... |
Sequence to override for dehumidification |
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Type of output |
| Analog | Step | Analog + Step | |
| Analog | - 0..10V signal for capacity | Step| - relay output for start/stop |
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Neutral zone type |
| 1/2 neutral zone | | Neutral zone to dehumidification | | Neutral zone to humidification | |
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PID Settings |
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Configuration > PID controllers > Humidification |
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P-band |
[100] %RH |
PID settings to describe responsiveness of the humidifier |
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I-time |
[300] s |
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D-time |
[0] s |
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PID output max limit |
[100] % |
max output of the PID can be limited |
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Configuration > PID controllers > Dehumidification |
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P-band |
[100] %RH |
PID settings for dehumidification signal |
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I-time |
[300] s |
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D-time |
[0] s |
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PID output max limit |
[100] % |
max output of the PID can be limited |
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Hardwired interface |
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Configuration > I/O allocation settings > |
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Analog inputs > Humidity room/extract air |
Any available I/O |
Mandatory - humidity sensor for reference |
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Analog inputs > Humidity supply air |
Optional - for limiting humidity of the supply air |
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Digital outputs > Humidity control start |
Interface to the humidifier |
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Analog outputs > Humidity control |
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Operational settings |
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Data & Settings > Humidity control |
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Humidity room/extract air |
__ % |
Actual measured RH |
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Setpoint humidity room/extract |
[50] %RH |
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Neutral zone extract/room |
[20] %RH |
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Dehumidification setpoint |
__ %RH |
The new setpoint created out of main setpoint and neutral zone |
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Humidification setpoint |
__ %RH |
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Max limit humidity supply air |
[80] %RH |
Limiting of the supply air humidity |
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Hysteresis for max limit humidity supply air |
[20] %RH |
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Digital output start point |
[15] % |
DO (Humidity control start) is activated once AO (Humidity control) exceeds 15% |
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Digital output stop point |
[5] % |
DO (Humidity control start) is deactivated once AO (Humidity control) falls below 5% |
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Operation overview |
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Data & Settings > Operation overview > Humidity |
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Humidity room/extract air |
__ % |
Overview of the function in action |
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Setpoint humidity room/extract |
[50] %RH |
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Dehumidification setpoint |
__ %RH |
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Humidification setpoint |
__ %RH |
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Humidity control |
__ % |
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Humidity control start |
Off | On |
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Humidity control mode |
|Not active | | Humidification | | Dehumidification | |
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