8
Installation and start-up
Sensors Sewi KNX AQS and Sewi KNX AQS/TH-D
• Version: 10.09.2018 • Technical changes and errors excepted.
The device may only be used as a fixed-site installation; that means only when assem-
bled and after conclusion of all installation and operational start-up tasks and only in
the surroundings designated for it.
Elsner Elektronik is not liable for any changes in norms and standards which may occur
after publication of these operating instructions.
2.2. Installation location
Install and use only in dry interior rooms!
Avoid condensation.
The sensor is installed surface mounted on walls or ceilings.
When selecting an installation location, please ensure that the measurement results of
temperature, humidity and CO
2
are affected as little as possible by external influ-
ences. Possible sources of interference include:
•
Direct sunlight
•
Drafts from windows and doors
•
Draughts from ducts coming from other rooms or the outdoors
•
Warming or cooling of the building structure on which the sensor is mounted,
e.g. due to sunlight, heating or cold water pipes
•
Connection lines and empty ducts which lead from warmer or colder areas to
the sensor
Measurement variations from such sources of interference must be corrected in the
ETS in order to ensure the specified accuracy of the sensor (offset).