ᐅ Which control system? Managing heating, ventilation, and air conditioning (HVAC) with an app

Created on: 25 Dec 2017 18:02
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Dark_Templar
Hello everyone,

I am about to start building and have the following systems planned. However, I am not sure how to best implement them.

Heating: Viessmann Vitodens 300-W
Ventilation: Zehnder Q450
Air conditioning: Daikin Emura (living room + child’s bedroom 1 + child’s bedroom 2)
Door communication: Open, target setup: video + preferably fingerprint
Home cinema (on the living floor): motorized screen + motorized curtain

I would like to control heating, ventilation, and air conditioning via apps. Each manufacturer offers a separate app for this, which would be acceptable to me.

On the living floor, I want to control 4 blinds, at least 4 lighting zones, the motorized screen, and the motorized curtain via a touch panel. Ideally, this panel would be the same one used for door communication. I want to control all other floors conventionally.

How would you organize this?
Mycraft28 Dec 2017 14:49
So, you’re slowly reaching my level… meaning you’ve understood what KNX actually is… not just some "fancy device" but simply a tool or means to an end…
ruppsn schrieb:
I’m not entirely sure if you really need an automation bus like KNX for that. DALI or DMX (also bus systems) don’t necessarily require KNX or something similar, as far as I know.

You need some form of control for everything, and if you run DALI or DMX additionally for lighting control in the home (which isn’t unreasonable), you still need a way to switch the lights. Using apps can be inconvenient, and nobody wants to set up a dedicated lighting control panel…

But through gateways, everything can be integrated into KNX and then controlled with regular switches or other existing control elements.

So yes, you don’t need KNX for DALI, DMX, or other systems… but if you want to operate everything cross-disciplinarily without major issues, KNX is one of the simplest solutions for that.
11ant28 Dec 2017 15:02
ruppsn schrieb:
In my experience, the biggest challenge when it comes to home automation systems is finding a competent planner or electrician who doesn’t just want to rip you off but actually presents a solution that fits your needs.

I agree with this, especially when replacing "home automation system" for "bus system." Unfortunately, there is a large gray area with electricians who want to work in this field but are either unwilling to invest time in training or simply do not grasp the concepts. For these individuals, the earth might as well be flat because their electrical wholesaler favors a particular system and they are too lazy to educate themselves in order to form their own informed opinion.
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Alex85
28 Dec 2017 15:04
Most people just sell what they have been buying their switches from for 20 years. Gira, Busch-Jaeger.
And because it is considered a luxury, the price has to be multiplied several times.
That is the problem.
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ruppsn
28 Dec 2017 15:12
11ant schrieb:
Replace "bus system" with the more general term "home automation," then I agree with that.

That's right, the more general term is home automation, that was also the intended meaning [emoji1303]
11ant28 Dec 2017 15:32
Alex85 schrieb:
Most people just sell what they have been buying their switches from for 20 years. Gira, Busch Jäger.

Without referring to specific brands: unfortunately, the market leaders often lag behind the latest technological trends and are, to put it mildly, not leaders in this area—even though they base their established (and for outdated technology perhaps “deserved”) price levels on this.
ruppsn schrieb:
True, the more general term is home automation,

I just wanted to emphasize again that you shouldn’t commit to a single wiring method with one solution. In my opinion, anyone who tries to save on the number of wires today will probably have to chase cables in the walls tomorrow.
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https://www.linkedin.com/company/bauen-jetzt/
Mycraft28 Dec 2017 15:57
Alex85 schrieb:
And because it’s luxury, the price has to be multiplied many times over.
That’s the problem.

The price is not determined by whether something is luxury or not; it simply results from the manufacturing and certification costs. By the time a device is market-ready, tens of thousands of euros have already been spent… even if it’s just a simple switch.
11ant schrieb:
Without referring to specific brands: unfortunately, it is often the dominant players who are the last to catch on to technological trends and, to put it mildly, are not leading in that area— even though they reflect their established (and for older technology maybe “earned”) price levels in that.

The dominant players have not been leaders for a long time, not even in KNX… but there are over 400 other manufacturers using the standard and offering devices.