Howto: Junkers/Bosch HT-3/EMS with Loxone

[BDP]

What about

This howto will describe my solution to control a Junkers/Bosch heater with HT3-bus and the newer EMS-bus.
This howto will be expanded throughout the time.

What do you need - Hardware

• Junkers/Bosch heater with Heatronic 3 or EMS bus (2-wire, this doesn't work for the older 3 wire bus - Heatronic 2
• FR or CR controller (at least FR 100 and CR100 controllers, I believe the FR10, CR 10 etc, do not work). IPM,ISM,MM, etc modules are also supported.
• Raspberry PI with Debian Stretch (for this one, I used the new Raspberry PI 3+)
• Heatronic 3 adapter for raspberry PI ( https://www.mikrocontroller.net/topic/317004 )

Raspberry PI

Attach the adapter to the Raspberry PI



Attached adapter





Make sure your raspberry PI is on stretch and totally updated (sudo apt-get update & sudo apt-get dist-upgrade)

• sudo raspi-config
• Under 5 (interfacing options) and then P6 (serial): disable the login shell and enable the serial hardware
• reboot

Hometop HT3 software

Install the necessary packages

• sudo apt-get install python3
• sudo apt-get install python3-serial
• sudo apt-get install python3-setuptools
• sudo apt-get install RPI.GPIO
• sudo apt-get install python3-tk
• sudo apt-get install librrdtool-oo-perl
• sudo apt-get autoremove
• sudo apt-get install rrdtool
• sudo adduser 'username' dialout
• sudo reboot

MQTT

• sudo apt-get install mosquitto mosquitto-clients

Some more python modules

• sudo apt-get install python3-pip
• sudo pip-3.2 install paho-mqtt or sudo pip3 install paho-mqtt (depends on the pip version)
• sudo reboot

Install Hometop software

• cd
• git clone https://github.com/norberts1/hometop_HT3.git
• mv ~/hometop_HT3/HT3 ~/.
• cd ./HT3/sw

Adapt the software

• ./create_databases.py
• sudo cp ./HT3/sw/etc/sysconfig/ht_collgate /etc/init.d
• cd /etc/init.d
• sudo insserv ht_collgate
• sudo cp ./HT3/sw/etc/sysconfig/ht_proxy /etc/init.d
• cd /etc/init.d
• sudo insserv ht_proxy
• sudo cp ./HT3/sw/etc/sysconfig/httpd /etc/init.d
• cd /etc/init.d
• sudo insserv httpd
• sudo reboot

Install Node-red

• bash <(curl -sL https://raw.githubusercontent.com/no...js-and-nodered)
• sudo systemctl enable nodered.service
• sudo service nodered restart

[rani22]

Is it possible to control the boiler using the loxone or is the thermostat still needed?

[BDP]

I'm using https://bbqkees-electronics.nl/produ...um-ii/?lang=nl now.
works great.

https://bbqkees-electronics.nl/wiki/

Let me know if you want more information.

[jamer]

I‘m also using BBQKees Gateway E32. I can get all the temperature states.
I do have difficulties getting the status „heating activated“ via RestAPI into the http input because of the quotation marks before and after the ON and OFF. How can you make the Loxone config understand them?

Has anybody managed this?


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[rani22]

Probably by using the new mqtt gateway from the loxberry. It has this transformer function, where you can transform the receiving string to something readable for the loxone

[jamer]

Through the mqtt gateway on loxberry it works just fine. My loxberry isn‘t very reliable and freezes from time to time (I do have a powerful powersupply!). That‘s why I want to run it on RestApi.


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[BDP]

I checked mine. This one is for pumpstatus but principle is the same. I hope this is what you mean and want.

hc2": \i"pumpStatus": "o\i\1 which gives you ascii code 102 (f) or 110 (n). Using a status block you can 'convert' 102 to off (0) and 110 to on (1)

[jamer]

You‘re my man 😎
Great! Works just as you explained!

While I have you watching:

What would be the string to change the value of the warmwater circulation pump from Loxone to the BBQKees gateway? Do you have any experience here?


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[BDP]

Do you mean the pump that is optional in an installation? The 'warmwasser zirkulation pumpe' like e.g. a Grundfos comfort PM up 15-14 ?

[jamer]

Yes. That‘s the one. We use it to have hot water right at the tap. Our taps are in a loop where the pump circulates the hot water. At the moment it is running on the heatings fixed timer. I like Loxone to give the pump a signal, when presence is detected in the bathrooms or even the house.


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[BDP]

I'm using an air smart socket for this. But what happens when you try this command in your browser?

http://your-ip-adressofthegateway/ap...rcmode&data=on

For me this command gives OK, but I'm not sure the pump is actually running as I'm not able to test or I need to rewire. (I'm using Junkers Heatronic 3 heater with CW400 thermostat and MM200 mixer)

[loxisch]

Hi,
I'm trying to implement the BBQKees gateway S32 on a Buderus GB172 with RC300 through Loxberry MQTT. Receiving values works perfectly easy, but I'm having trouble setting up the commands. Since I am able to control other applications through MQTT it should generally work, but seems I'm somehow lost with the correct syntax. I'm able to set values as I want (and with effect) through the Web Frontend of the gateway.



So as to keep with the example of the circulation pump, I was trying out the command in Loxone as follows (UDP virtual command):

ems-esp/boiler/wwcirculation "on"

Documentation is here:

https://emsesp.github.io/docs/#/Command?id=mqtt

I tried to apply what I understood from that documentation, tried different versions like write "on" without quotation marks, also using entity "thermostat" instead of "boiler". At the moment I'm somehow stuck and do not have any further ideas...
Does anyone have a running MQTT implementation for this gateway?

[acmilan87]

Hallo 🙋♂️
ich habe das BBQKees Gateway mit meiner Bosch CS7001i am laufen.
Per Webinterface kann ich nun alle Werte einsehen und anpassen.
Das Gateway an sich ist also empfehlenswert.

Nun möchte ich aber diverse Werte in Loxone visualisieren oder auch anpassen können.

Die Doku habe ich mir natürlich angeschaut, sie lässt mich aber etwas verzweifelt zurück.

Mit der URL aus der Doku:

http://xxx.xxx.xxx.xxx/api?device=boiler&cmd=info

kann ich mir ja alle möglichen Parameter der Heizung/Gateway im JSON Format anzeigen lassen.



Entgegen der Beschreibung in der Doku werden diese Werte aber durch Leerzeichen getrennt.

Bsp.:

„heating active“ (JSON Ausgabe) vs. „heatingActive“ (Doku).



Ich habe für beide Varianten einen virt. Http Eingang Befehl in der Config angelegt, bekommen unter beiden aber keine Antwort zurück.
Also in der App stehen die Werte auf 0.
Auch wenn die Heizung an ist.

Kann mir hier bitte jemand weiterhelfen?


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[BDP]

Try

"o\i\1 instead off "\i\v and then you get ascii code for N (On) or F (Off) (see my response number 7) or try with a temperature first. This gives you a number and not a string value.
heating active should be correct I think