Vaillant EcoTec Plus

[rom-burner]

Been all over the wiki and forums and have registered for the next batch of adapters when available, but in the meantime I have two very basic questions:

What is 'bai', and how do I know if my boiler is supported in the configuration files?!

What I want to do is log data from, not control, my Vaillant Ecotec Plus boiler, specifically FlowT, ReturnT, Pump Speed, Modulation, Burner state, some measure of power output/gas flow (and I'm thinking about adding a temp sensor in a pocket in the hot water cylinder to register that temp into the boiler). I have no controller attached to the boiler, it simply receives on/off heat demand commands from the independent room/floor/hot water timers/stats and the boiler modulates itself.

My main question is, would it be possible to power an eBus Adapter 3.1(wifi) with a standard USB wall transformer and connect it to the empty eBus connectors on the boiler board that doesn't have a controller attached and have it access this data via an eBusd instance (that i'll run in a docker container on a server on my LAN and poll with Telegraf/InfluxDB)? Or do I have to use the eBus Adapter as a pseudo-controller to stimulate the data chatter on which it could also listen-in?

Has anyone else achieved this simple use case and know what data is available?

Thanks

[nimmerpeople]

I'm not sure I understand your question, but have a look at this site. I set this up with my Vaillant Ecotec Plus.
https://fromeijn.nl/

My adapter(not wifi) lights up when connected to the boiler terminals, without any external USB. but that's prob better understood by those who understand the physical side.

I use a super simple Pi to run Home assistant which has all the native stuff needed - inc ebusd.

Hope this helps a bit.

[Dan-McG]

thanks @nimmerpeople that's quite helpful! my main question was: can an ebus adapter listen to useful data from the boiler without a vaillant controller stimulating the creation of that data, and although i don't know your particular boiler, your project seems to say 'yes'.

my second question is what data is available, and i see from your project at least water pressure is there, so am optimistic flow and return temperatures etc will also be available.

i was also curious whether the boiler's ebus terminals could power the boards available, and i see that's how you power yours, but i suspect the wifi boards may need a separate power source via the usb header.

but i still don't know what a 'bai' is!

thanks for your help

[nimmerpeople]

PS I have the same boiler as you.. there's LOADS of info via google on what Vaillant info is available, the example i gave you is Vaillant too..

[nimmerpeople]

Yes, I don't have a vaillant controller and one isn't required - the link I sent is an example of how people are building their own controller in software using the ebus controller. The data I believe will depend on the boiler - but yes, flow and return temps are available in mine and every other example I've seen. and re power - I think you're wrong - the ebus wifi adapters I've seen - eg https://www.lectronz.com/products/ebus-to-wifi-adapter-module - take power from the ebus terminals alone. Happy days for you. PS I have never managed to find out what bai means yet either!

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On Wed, Feb 15, 2023 at 4:19 PM Dan-McG ***@***.***> wrote: thanks @nimmerpeople <https://github.com/nimmerpeople> that's quite helpful! my main question was: can an ebus adapter listen to useful data from the boiler without a vaillant controller stimulating the creation of that data, and although i don't know your particular boiler, your project seems to say 'yes'. my second question is what data is available, and i see from your project at least water pressure is there, so am optimistic flow and return temperatures etc will also be available. i was also curious whether the boiler's ebus terminals could power the boards available, and i see that's how you power yours, but i suspect the wifi boards may need a separate power source via the usb header. but i still don't know what a 'bai' is! thanks for your help — Reply to this email directly, view it on GitHub <#833 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ATK33YQPGXKTVOKMCAZ73GDWXT62DANCNFSM6AAAAAAUVBDZIU> . You are receiving this because you were mentioned.Message ID: ***@***.***>