7
Installation and commissioning
Cala KNX M-T push button
• Version: 13.09.2019 • Technical changes and errors excepted.
2.3. Device structure
2.3.1. Casing
2.4. Installation of the sensor
First install the windproof socket with feed line. Seal the inlet tubes as well, in order to
prevent draughts.
Then screw the base plate to the socket and place the switch program frame. Connect
the bus cable +/- to the plug (black-red).
Insert the device firmly onto the metal frame using the catches so that the device and
the housing are fixed together. The device has to be inserted such that the bus terminal
faces up (see Fig. 3). This is necessary for a correct temperature measurement and for
Cala KNX M2-T and Cala KNX M4-T also for button allocation.
Fig. 2: Front
1
Ventilation slit (top and bottom)
2
Touch areas with LEDs
1
1
2
2
2
2
1
1
2
2
Fig. 3: Back
1
Base frame
2
KNX terminal BUS +/-
3
Programming button (recessed) for
teaching the device
4
Programming LED (recessed)
5
Catches
5
1
3
2
4
