Operating Manual AmbiCube
Setting values
Page 22 of 40
Version: 2 | en
Subject to technical changes
8 Setting values
A potentiometer on the front of the air purifier allows the speed of the fan to be ad-
justed. The speed influences the extraction capacity such as the extracted air
volume flow. The value to be set depends on various parameters, including the
size of the room and the desired air circulation per hour. All values can be set by
yourself as required. We recommend an air exchange rate in the range of 4 to 8.
In the following diagram, the characteristic curve for the new condition of the filter
elements is shown in black. The characteristic curves for the respective settings of
the potentiometer are shown in color. During operation, the operating point moves
along the corresponding characteristic curve, whereby, due to increasing loading of
the filter elements, the filter resistance increases and the volume flow decreases
accordingly.
Filter resistant [mbar]
Air volume flow [m³/h]
Differential pressure
max
Settings on the
controller
Characteristic curve of the
unit in new condition
Illustration 9:
Characteristic curves of the unit
The data for the settings are updated continuously. The current settings can be
found on the following website:
https://www.keller-lufttechnik.de/ambicube-doku
On this website you can also download the latest operating manual.
8.1 Example for setting the potentiometer
First the room volume must be determined. This provides the required air volume
flow.
Determination of the room volume:
Room length [m] x room width [m] x room height [m] = room volume [m
3
]
Example: 7,5 m x 7,5 m x 2,4 m = 135 m
3
Determination of the volume flow:
Room volume [m
3
] x air exchange rate [1/h] = Volume flow [m
3
/h]
Example: 135 m
3
x 6/h = 810 m³/h (recommended volume flow)
Example: 135 m
3
x 4/h = 540 m³/h (recommended volume flow)
Transfer to the diagram:
