Drayton Wiser Home Assistant Integration

msp1974 · January 23, 2022, 11:58am

Daniel, welcome to the HA forum. Personally i would say the integration for Wiser is amazing but then Angelo and I write and maintain it!

What i would say is that the heating aspects of Wiser are well integrated, easy to use and automate all sorts of things. The new Wiser devices such as lights, blinds etc are new and only currently provide some visibility but not control. However, we are always happy to work with our community to add new functions. If you head over to our github repo, you can see what functions you can control and some screenshots to bring that alive a little more.

I would def get the wiser hub as this does a lot of the control of the heating aspects and is very good. Also this integration talks to the hub locally to control the heating/devices etc

enoch85 · January 23, 2022, 12:06pm

Thanks!

Just told the electrician to skip the Wiser-Gateway, but I guess I will tell him to scratch that for now. The only problem as I see it is that I have to re-pair all the devices from the Wiser-Gateway into HAOS through the Sonoff stick, but I guess that’s a problem further down the road.

I’m not that interested in the heating since we will use Nibe and LK floor heating, but you can be sure I will be active in the community for the lights, power-outlets etc once I’ve got everything installed and post on Github.

rlewis187 · January 23, 2022, 2:57pm

I have 2 examples here:

On the left is a room with 2 x TRV and a Wiser Roomstat
On the right is a room with just 2 x TRV

Purple is the target temperature for the room, green is the temperature reported for the room by Wiser and red is the temperature reported by my Netatmo sensor.

I have since placed my roomstat and netatmo sensors next to each other and the temperature difference is the same.

dunxd · January 23, 2022, 6:18pm

The Wiser gateway is also a controller for your boiler. Unless you are replacing that function with something else you don’t want to leave it out.

It is also quite nice to have the Wiser app and infrastructure running the heating. Building your own heating control system in HA involves a learning curve, during which you (and your family) probably want the heating functioning as expected.

enoch85 · January 23, 2022, 8:22pm

We’re not using Wiser at all for the heating. That’s a combination of Nibe F750 and LK Floor Heating.

Thanks for your advice though!

dunxd · January 23, 2022, 9:13pm

Ok - seems that in the EU Schneider have a different Wiser product line separate from the Drayton Wiser heating hub etc available in the UK. As far as I know this is not handled by this integration which is specifically Drayton Wiser.

dunxd · January 23, 2022, 9:27pm

Are you able to set up template sensors in HA to connect the temperature reading from each TRV. Here is some sample YAML for template.yaml:

- sensor                       
    - unique_id: 'kitchen_itrv_temp'
      name: 'Kitchen iTRV Temperature'
      unit_of_measurement: '°C'
      device_class: 'temperature'              
      state_class: 'measurement'
      state: "{{ state_attr('sensor.wiser_itrv_kitchen_signal', 'temperature') }}"

enoch85 · January 23, 2022, 10:20pm

Bummer! This seemed like such a good integration!

I can’t tell if the YAML works until August once everything is up and running (house is built). Just trying to plan everything now.

Angelo_Santagata · January 23, 2022, 11:09pm

@enoch85 ,
I was reading your comments and Im slightly confused. The integration here works with the Wiser iTRVs and the heathub. Actually the integration works directly with the heathub which in turn communicates with the trvs/thermostat/plugs. So if you want to use this integration then you need the heathub. Is “gateway” something different?

I think dunxd is hinting EU WIser is different?

Angelo_Santagata · January 23, 2022, 11:14pm

Just curious from the community, Ive just moved into a new home, high ceilings etc. and Im noticing that in some rooms the TRV (Wiser) temperature is around 2C out (using a ESPHome based temp sensor). These are rooms which dont have roomstats just trvs, are you guys seeing the same? Im my old house the temperatures were barely 1c out… Currently just telling wiser +2C but im looking to get some more roomstats

enoch85 · January 24, 2022, 6:51am

This is what I’m getting: Smarta hem system med Wiser för bostadsägare | Schneider Electric Sverige

From what I understand it has nothing to do with the Drayton?

msp1974 · January 24, 2022, 9:53am

I do believe we have people using the integration with this gateway and whilst it is not the Drayton Wiser gateway, it runs a version of the same firmware. If LGO44 is on this forum, maybe he can comment.

Admittedly, the integration mainly focusses on the heating and smartplugs, we did add the ability to recognise blinds and dimmable lights but not yet control (mainly because we do not have them to get the control commands), both of which are not yet available in the UK.

I suspect that much of what is available on the continent, will be coming to the UK at some point (we get forgotten about now we’ve stupidly left the EU! ).

So it is up to you if you want to take the option of getting the gateway. As said before, if your willing to put some work in with us (ie be able to intercept the commands from the app to the gateway so we know what they are and provide json outputs from the hub so we can see parameters available) I think we can make the integration function with your gateway and devices.

Mark

enoch85 · January 24, 2022, 10:15am

Thanks Mark!

Sure, I’m willing to dig in! Only the fact that you are willing to support it makes me confident in that this integration is the way to go! Maybe we can make this the official Wiser integration down the road?

Ping @LGO44 btw

Angelo_Santagata · January 24, 2022, 10:52am

Supporting devices we have no access to is however kinda fraught with … interesting difficulties, ie we cant test it but we have some workarounds , namely a fake server where we serve up predefined payloads. @enoch85 sure, get us the payloads, and more importantly what APIs which need to call to turn things on/off and we’ll try and put them in . Ideally if you can fork this repo and issue tested PRs we’d be happy to review and merge into master…

BTW The german Wiser Stuff looks AWESOME

enoch85 · January 24, 2022, 11:41am

I’m thinking maybe I’ll send you some devices if my wallet allows. That way you can keep track of any updates, and test it out.

Another option would be to dig deep into the core. But, I don’t know how much time I will have on my hands. The future will tell.

Chris_J · January 24, 2022, 1:30pm

To answer your question, personally I experience the same thing. My ceilings are 2.4m and the iTRVs are regularly 1.5 - 2C too high. At first I thought that Wiser’s algorithm was simply over compensating for the fact that they are often mounted only a few feet off the ground, but it appears to also be related to the pipework heating up the valve body, resulting in a temperature difference that is non-linear.

One thing I have done and you could try, which does mitigate the issue, is to mount the iTRV and needle valve on the return pipe, instead of the flow (you will need a bi-directional valve). The return pipe is much cooler and does not seem to skew the results as much, perhaps about 1C at worse. I’ve then simply set rooms which have only iTRVs to be 1C higher than what I actually want it. This seems to work well enough, albeit I still get this annoying constant valve adjustment in one of my rooms that I mentioned in an earlier post.

Other than that, the only other real solution seems to be adding a room thermostat.

Angelo_Santagata · January 24, 2022, 3:58pm

The coding isnt too bad , so get stuck in!! We’ll help if needed

Angelo_Santagata · January 24, 2022, 4:02pm

Chris_J:

To answer your question, personally I experience the same thing. My ceilings are 2.4m and the iTRVs are regularly 1.5 - 2C too high. At first I thought that Wiser’s algorithm was simply over compensating for the fact that they are often mounted only a few feet off the ground, but it appears to also be related to the pipework heating up the valve body, resulting in a temperature difference that is non-linear.

One thing I have done and you could try, which does mitigate the issue, is to mount the iTRV and needle valve on the return pipe, instead of the flow (you will need a bi-directional valve). The return pipe is much cooler and does not seem to skew the results as much, perhaps about 1C at worse. I’ve then simply set rooms which have only iTRVs to be 1C higher than what I actually want it. This seems to work well enough, albeit I still get this annoying constant valve adjustment in one of my rooms that I mentioned in an earlier post.

Other than that, the only other real solution seems to be adding a room thermostat.

yeah, my new place the ceilings are also very high, bit higher than the last place and Im seeing the same. Im not going to swap the valves over, thats more work than Id like (Draining the system etc), easier to just add 2C to the target temp until I get more room stats… Each one appears to be like £70 each, just keeping an eye on amazon warehouse (got a new trv for £36 today - no massive saving tbh)

It works, and I have a ton of old ESP8266’s begging to be deployed as temperature sensors!!!

Chris_J · January 24, 2022, 4:22pm

Keep an eye on City Plumbing, they sometimes have TRVs on offer for £29+VAT and I think maybe ToolStation. These items were definitely cheaper in the summer! Otherwise, yeah Amazon do occasionally dip the price. Two of mine are Amazon warehouse returns that were actually still sealed in the box that I got for around £34. Still, not cheap for these little puppies!!

dunxd · January 24, 2022, 4:32pm

I don’t know whether there is an algorithm for rooms with only one iTRV, as the room temp and that reported by the iTRV are always the same.

I suspect that there might not be any algorithm that Wiser can use for all rooms - room height, shape, radiator design, insulation, window position might all have different effects on the temperature measured within the iTRV. Some sort of room specific calibration may be necessary, using a roomstat or another (cheaper) smart thermometer to find out how far out the iTRV is over a period of time.