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Installation and commissioning
Sensor KNX AQS/TH-B-UP
• as of software 3.1 • Status: 24.09.2014 • Technical changes reserved. Errors reserved.
2.3.2. Rear view of sensor board with connections
2.4. Assembly of the sensor
First of all fit the windproof socket with connection. Also seal inlet pipes to avoid
infiltration.
Screw the base plate onto the socket and position the frame of the switching
programme. Connect the CO
2
sensor unit and the bus line +/- (black-red plug) to the
terminals provided on the board.
Pin the sensor with the notches on to the metal frame, so that sensor and frame are
fixed.
2.5. Notes on mounting and commissioning
Never expose the device to water (e.g. rain) or dust. This can damage the electronics.
You must not exceed a relative humidity of 95%. Avoid condensation.
After the bus voltage has been applied, the device will enter an initialisation phase
lasting a few seconds. During this phase no information can be received via the bus.
Fig. 2
1
KNX terminal BUS +/-
2
Notches
3
Slot for CO
2
sensor unit
4
Plug of CO
2
sensor unit
5
CO
2
sensor unit
Lenght of cable approx. 110 mm
a
Hole centre distance approx. 43 mm
b
Diameter of diaphragm
approx. 18 mm
2
1
3
4
5
a
b
Place the CO
2
sensor unit in the socket. The side with the sensor
membrane must face to front.
Fig. 3