Siemens QMX3.P37 Technical Principles page 15

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Installation
Caution!
Bus cabling
Siemens
Building Technologies
• Follow the KNX regulations
• For KNX wiring (topology, allowed cables and cable length), see the document
KNX bus [4].
• Use the correct cables for the KNX bus
• Do not interchange the wires of the KNX cable.
– The red terminal is for KNX +
– The gray terminal is for KNX –
• Observe all local installation regulations.
The devices are not protected against accidental connection to AC 230 V.
Information in topology and addressing in KNX networks is available in document
KNX bus [4]. The following information requires electrical installation as per the
KNX-TP1 standard.
Wall-mounted sensors and room operator units for KNX/ETS and KNX/ACS
Mounting and electrical installation
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CM2N1602en_05
2018-09-14