Immergas Victrix integration with HA

Configuration
1

Greetings all,

I would like to integrate my Victrix to be able to monitor and control it from HA.
It was just installed this thermostat (Chrono-thermostat - Smartech PLUS) (link to the manual - https://www.immergas.com/imp/H1526/1045008_002-ENG.pdf). Now Im able to control the temperature from my phone.
So I was wondering if someone succeed to implement automation on such boiler heaters?
Does anyone manage to “connect” to this device and control it from HA?
I`m opened for any solution :slight_smile:

Regards!

3 Likes
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Hi, have you find any solution?

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Greetings Adynis,

Not yet. I wrote to the company (Immergas) to ask for APIs or some way to get the data that they are collecting but their reply was "NO". Since the connection between the thermostat and "mother" is Bluetooth Ill try to wrote some code to capture this. I will post if I got progress on that.

There is a site where you can see when the boiler was on or off but there is no indication of how much it consume. Im thinking to add DIY hall sensor (with ESP32) on the Gas meter to actually get a value for the consumption. I still need to talk to the Gas provider if it is against some rule to "attach" something to the Gas meter. "link to the gas meter that Ill use as a start - https://github.com/red5alex/hall-effect-gas-meter-sensor

Regards!

1 Like
4

Hi,

Have you found a solution? Has the attempt to intercept BLE traffic yielded any results?

Regards!

5

Greetings Spenk93,

Unfortunately not. I`ll message you once I have some progress on that topic!

Regards!

6

Hi, have you managed to integrate Immergas into Home Assistant? Is there any news? than you

7

Any progress on topic? Bought remote CAR V2, need to hookup oscillograph and reverse engineer communication protocol…

8

Greetings,
Unfortunately no progress on this topic. Also no support from Immergas side :(.
CARV2 is much better choice!

9

Reading different manuals of the immergas I can I can speculate that is using the Open Therm protocol. Some google research are pointing in that direction.
I leave some links that can help:

1 Like
10

I can confirm SmartechPlus thermostats are bluetooth linked only with the SmartechPlus gateway, which is wired to the boiler board (pin 40/41) and communicate with OpenTherm protocol.

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Hi guys

Could you test how otgateway works with your Immergas? I’ve added a little hack to work with these boilers (option “Fix for Immergas boilers” in settings), one of the users tested it with their Immergas Nike Mythos 24 and reported that it works.

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I’m interested in helping You. I have also boiler from them, but no smartech accessory. Could you start with sending some high quality photos of gatway PCB (device connected to boiler) ?

IMG bus is for sure a serial protocol - we can try to reverse engineer it together.

13

Hi, any news on the Immergas (Smartech Plus) integration with Home assistant?
It is also compatible with Alexa and Google, maybe we could recover some value from them by integrating them on Home assistant?
Thanks.

2 Likes
14

I don’t know if it may be useful, it is a bit differnt case, but, to integrate Hisense AC in Home assistant automations, the scripts have been useful for me (–> settings → automations → script).
Air conditioner are integrated by theyr own hisense not official integration addon, plus mqtt and mosquito broker mqtt, but I wasn’t be able to manage that direcltly by node red flows, a part on / off function.

I often use node red to write the algoritms and in node red you can use “call service” node to activate a previous written script.
So I wrote the scripts about desired temperature, functioning mode etc…, and I have sceduled that in node red flows according to time sensors and else.
Hope it helps

15

Hi, I also have Victrix Terra and after some research, I have found it communicate on OpenTherm. I have spoken with Immergas technician, he confirmed, that IMGBUS is almost OT, but improved a bit. Don’t know how, but I have tried OT communication and worked fine. One problem is, when OT commnication is started and later communication lost, then heater show error and it is blocked until restart :frowning:

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There is a new product that may be good for boilers that the Dominus module is not suitable for. The price is also more friendly.

I wrote to support to publish a compatibility list.

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hi Ikavan, have you find a fix for block problem?
Does it have maybe something to do with this configuration (if available in your unit)?
Sorry I only have Italian doc at the moment with me

image

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Do you think it can work with an Immergas Victrix 32 erp? I use evohome, and I tried to connect the boiler with an evohome R8810 opentherm on pin 44 and 41, but when I use this pin, the DHW temperature and heating radiator temperature is demanded to the evohome. unfortunatly evohome can’t set any of this two temperature, so I have dwh at 30 degrees and heating temp at 85 degrees! So I am searching for an opentherm gateway to put between the R8810 and the boiler. Unfortunately my boiler doesn’t have that P setting…

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Looking on the internet it seems that the Smartech Plus is an OpenTherm gateway, so with the right parameter it should be easy to configure right? So how is possible to get these parameters?