the amount of electricity consumers grows constantly in my home. We try to avoid any local burning of climate damaging gas or oil (Clearly we have to “hope”, that the overall generation of electricity will be 100 % CO2-neutral in a near future).
We have this type of consumers:
Normal electrical houshold-consumers (washing maschine, dishing machine, TV ans so on)
Heat pump for heating the rooms
Electrical car
Instantaneous water heater (Durchlauferhitzer) for warm water (e.g. shower)
At some point in time, all the consumers are on at the same time. Then, the power, that my house consumes is getting very big.
Especially the Instantaneous water heater needs a high amount of electrical power, for quite a short time. This time is also not very good predictable, because the people can take a shower at every time of the day.
For the other consumers, this usage time can be managed.
I want to be able to stop the Heat pump and the charging of the Electrical car, when the Instantaneous water heater starts.
Therefore I need an instantaneous water heater, that gives me a signal (via MQTT?) when it starts up. Then I could set up an automation and pause the heat pump and the charging of the Electrical car while someone is having a shower. This would limit the power usage of my house, based on rules.
Does anyone know, which Instantaneous water heater can give me such a signal? Or that can give more signals, e.g. the current power, the used energy and so on?
One for a slave device: if the heater is heating the slave device is switched off
One from a master device: if the master is in the heater stays off.
You could connect these devices to any device which has IO, eg Sonoff, esp8266/32, door sensors (replace the reed switch).
Which model do you have?
Well maybe you can use a SONOFF POW switch with your electric heater; it also shows power usage and consumption. Then you can use an automation like “if Sonoff Pow power usage goes above 20W; then turn off heat pump andcra charge”…
I have just read again deeply into the Clage DSX Touch. In the device is the CLAGE Homeserver HSX firmly integrated. This has a REST-API that can be used with simple HTTP(S)-GET commands via WLAN. Additional accessories are NOT required.
The device uses WLAN. If you have registered in WLAN, a JSON file comes as a response to an HTTPS query. In the app store, there is a mobile app that connects to this (CLAGE Smart Control). With suitable means, you can also watch it communicate (with a packet sniffer). This is ordinary REST. Any PUT, POST, GET queries and back comes a JSON. The app has the default user and the default password in it (Security?). The start page works without.
That would be a way. One could create an integration for it. But, I can’t poll the REST API all the time. I will look if there are ways to set a hook, e.g. to the current power state and then have a trigger on this sensor.
But I would have to reverse engineer the api and the manufacturer can change the API at any time and then the integration would break again.
Of course it would be better to have a device that offers something like that officially directly from the manufacturer.
Exactly that is my problem. The electrical curcuit ist the domain of the electrical service company. I do not want to change there anything. I do not want to loose any warranty or break official rules.
I have meanwhile reverse enginieered the REST API of my Clage Homeserver. The actual status of my research is published as Swagger API documentation.
The API is not documented by Clage, I have tried to figure out the functions by “try”.
But the actual problem is not solved by the REST API. I can “only” poll the API at specific points in time, so I cannot retrieve a real time trigger of the electrical load of the device.
I have then changed the concept and retrieve now the overall load of the house from a meter, that was includes in my Solar Edge PV system via modbus. But Modbus is also a Pull-based system, it just can be quite fast (1 pull per second).
Hi @klacol
I tried to install your plugin, while setting all this information, I can not have it working, I tried you python code and it give me this
Traceback (most recent call last):
File "config/test.py", line 9, in <module>
parsed = json.load( clageHomeServer.requestStatus() )
File "/usr/local/lib/python3.9/dist-packages/clage_homeserver/clage_homeserver.py", line 398, in requestStatus
response = ClageHomeServerMapper().mapApiStatusResponse(status)
File "/usr/local/lib/python3.9/dist-packages/clage_homeserver/clage_homeserver.py", line 29, in mapApiStatusResponse
heater = status.get('devices')[NUMBER_OF_CONNECTED_HEATERS-1]
TypeError: 'NoneType' object is not subscriptable
You can use Shelly EM or Shelly 3 EM directly in your panel. It will attach to the dedicated circuit for the water heater. I have my AC which draws up to 50 amps monitored by a shelly EM. Shelly EM can monitor 2 circuits and 3 EM can monitor 3 circuits.
CLAGE GmbH in Germany is right now announcing an instantaneous water heater called ISX. The device is equipped with a modbus RTU, a WiFi and a BLE interface. Modbus can be used straight forward with the modbus integration. An example for an integration via modbus TCP gateway is published on Github. The WLAN-REST-API is published on github too, but not supported as far as I know.
Bosch Tronic Line can be integrated by Home Connect but only if using the cloud.
Has anyone working integration with Tronic 8500i? I assume, that I need first connect my water heater to the Home Connect app but it won’t find my device. It’s working fine with HomeCom app.
and doesn’t support 3 Phase.