ᐅ Blind Control System for New Construction (Multiple Units per Switch Box)

Created on: 5 Jul 2018 22:04
M
molchi
Hello and good evening!

I am currently planning the electrical installation for our new build. Initially, we did not plan to install any smart home/KNX system.

However, I am now facing an issue due to limited space for the switch layout in the living room. At the living room entrance (kitchen, dining area, and sofa area), the controls for lighting, heating, and blinds all need to be combined on a narrow wall. I would prefer not to have two vertical switch frames side by side, either with four or five switches each.

In total, there are 5 roller shutter units, 1 heating control, and at least 4 lighting circuits to manage. Additionally, there might be some switched power outlets.

The electrical installation in the house will be executed as a star wiring system.

Does anyone have any suggestions for a solution?

Best regards from northern Germany,
Thomas
M
molchi
8 Jul 2018 13:11
Ok, understood!

Now I have read that KNX cables should also be installed at a distance from NYM cables.
Is that really the case?
I am having major issues because I am planning a solid wood house and need to configure the installation ducts in advance. Naturally, network cables, antenna cables, NYM cables, and KNX cables all run together in 3x5 cm (1.2x2 inches) channels.

Regards,
Thomas
Mycraft8 Jul 2018 13:21
No, you can install the green cable directly next to/alongside the NYM cable.
M
molchi
8 Jul 2018 13:54
OK!!

We will install the roller shutter / venetian blind boxes externally, in front of the windows. This way, we can also run the power cable underground to the motors.
Earlier, I asked whether the motors also need to be operated with KNX cables.
Drilling holes in the exterior walls is always less than ideal.
And KNX cables protected for underground installation probably don’t exist.
Mycraft8 Jul 2018 15:04
But they do exist, HELUKABEL PE, ERD BUS cables E-BUS ERD...

However, an installation conduit system with the green cable inside also works.
M
mertmk3
9 Jul 2018 14:50
Same problem here.
My electricians advised me to install the roller shutters/blinds and some lights in the living-dining area directly with KNX, while for many other locations we are initially just running the wiring (thermostat, lighting, intercoms, etc.) so that we can expand later as we want. This way, the additional costs compared to traditional star wiring remain quite manageable.
M
matte
9 Jul 2018 14:53
If KNX is already installed in the house, I would definitely handle the individual room control with it as well. Instead of traditional room thermostats, install push buttons with temperature sensors right away. These can also be used to control the lights and blinds.
It doesn't really make sense to install regular thermostats now...