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Speed control
Similar to the airflow rate control the speed for economy, comfort and night setback mode can be
set. The fans are operated at the set speed, regardless of airflow rate or duct pressure.
In addition, the speed is increased by air quality control or dehumidification when the air quality is
poor or the humidity is high. Also, an adjustment of the speed for poor air quality and high humidity
is possible. The setting of the speed for night setback, air quality and dehumidification occurs in
separate menus, which can be entered directly.
Setpoint
Supply Eco
Supply Comfort
Return Eco
Return Comfort
Supply set
Return set
Table 10: Speed settings
The setpoints for night setback, air quality and humidity control can be found in the chapters night
setback (14.5 Night setback), air quality control (14.4.1.3 Fan speed) and humidity control
(14.4.1.1 CO2 sensor).
14.2 Temperature setpoints
The control mode for the temperature control and the corresponding setpoints are set via the tem-
perature setpoints. Depending on the execution of the AHU, additional calculated setpoints for the
saturation temperature are displayed over which the dehumidification is controlled.
14.2.1
Operating mode of the temperature control
There are up to 5 operating modes for the temperature control, which can be set by the user. If no
room unit is present, then only 3 operating modes can be selected. If the AHU is a pure supply air
unit, then the return air control cannot be set. In order to make the right setting is the understanding
of the individual operating modes very important. Service engineers or planners can give you more
information.
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Description
Supply fan speed for economy mode
Supply fan speed for comfort mode
Return fan speed for economy mode
Return fan speed for comfort mode
Current supply fan speed setpoint
Current return fan speed setpoint
Temperature setpoints
Control mode
Actual mode
Auto
Heat Eco
Heat Comfort
Cool Eco
Cool Comfort
Room
Figure 91: Temperature setpoints
Default
40%
80%
40%
80%
...%
...%
1/13
RetCasc
Winter
18.0°C
20.0°C
24.0°C
22.0°C
21.0°C
V07-19.0
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