6
Installation and commissioning
Indoor Sensor KNX AQS/TH
• Date of issue: 13.10.2011 • Subject to technical changes. Errors excepted.
The device must only be operated as stationary system, i.e. only in a fitted state and
after completion of all installation and start-up works, and only in the environment in-
tended for this purpose.
Elsner Elektronik does not assume any liability for changes in standards after publica-
tion of this instruction manual.
2.2. Installation position
The
KNX AQS/TH
is flush mounted in a distribution box (Ø 70 mm, 36 mm deep) and
covered. Box and cover are supplied.
May be installed and operated in dry interior rooms only.
Avoid condensation.
For monitoring of the CO
2
content of the room air choose an installation position in
height of head (standing or sitting, according to utilization of room). The CO
2
concen-
tration in indoor rooms is highest near the floor and decreases towards the ceiling.
When selecting an installation location, please ensure that the measurement results
are affected as little as possible by external influences. Possible sources of interference
include:
•
Direct sunlight
•
Drafts from windows and doors
•
Draft from ducts which lead from other rooms or from the outside to the
junction box in which the sensor is mounted
•
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 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).
To ensure a correct CO
2
measurement, the device must be installed in a windproof so-
cket.