I’m looking to replace a Devireg 550 controller with something that can be hooked in to HA. Ideally something fairly simple without the need for full blown gateways/hubs (got one of those for the Honeywell Evohome already but that’s maxed out on zones) but if it has to have a gateway/hub then so be it.
I saw some references to Ebeco being good and they look pretty decent but also not generally available in the UK.
Does anyone have any recommendations for the UK market? Or other market sourced that work comfortably in the UK?
I replaced those same deviregs with shelly 1pm’s. Now I get temp data from all the floors. Nice. Much better control than before - using the PID smart thermostat custom conponent.
Not seen those before but interesting little devices.
So am I right in thinking the full setup then is the Shelly 1PM, a temperature sensor via it’s temperature sensor add-on and then the HA Smart Thermostat HACS component? What did you do about scheduling?
One of the reasons I was considering a standalone controller was it meant anyone could control it rather than just me/people with access to the HA console. Not to say that can’t be addressed differently but something I’ll need to consider.
With scheduling you mean different temperature at different time of the day? For that I use
Scheduler Card (you can find it in HACS) to control a master temperature variable (input number)
An automation to copy the value to all relevant thermostats every time it changes.
No-one else can control the temperature than me. If they want it warmer they need to light a fire
Yes you found the Smart Thermostat addon. It’s good once you find the proper values. Especially I notice a difference when using the fireplace. Before (with the deviregs) it got pretty hot inside. Now there’s no overshoot, and we can benefit from the fireplace much more.
@hubszo - It’s an electric underfloor heating system.
@nilux - The limited control options becomes a bit of an issue - that starts to need friends, family etc that are here having access to HA. Currently contemplating either a raspberry pi based project (have a couple of spare Pi2s) with a touch screen and including the lights (essentially localising control to the pi in room and HA then has override) or alternatively something like the Warmup controller that can apparently deal with the Devireg underfloor sensor too.
You can attach a more accurate DS18?? underfloor temp sensor to the shelly 1pm - to replace the devireg one. Also, are you sure anyone would need to control the heating? Just make sure it’s all the time as comfortable as you wish. If energy consumtion is of no concern, then simply use the PIDE controller to maintain a stable comfortable temperature. Otherwise adjust it to spend exactly as much as you wish to afford.
A while ago I went with Devireg Smart in my house. On one hand they doing what they suppose to (schedule based temp. adjustment) but what I have learned over time that this is danfoss proprietary Wi-Fi solution which is completely inaccessible for any integrations with 3rd party systems (HA in particular). I addition their app is horrible, both with regards to UI and functionality. I’m pretty disappointed considering the premium price that they charge.
Regarding use of shelly 1pm. I see from the discussion possibility to connect to the underfloor sensor like ds18b20 but what about room temperature sensor which should be the main source of temperature adjustment?
I also have some Devireg 550 that i’m trying to replace, but I don’t have the neutral wire for the heating system near to the thermostats.
In my case the Neutral wire goes directly to the heating system like this diagram and I just have one neutral to power up the thermostats.
Can you share how you have your wirings with the shelly 1pm?
I’m not sure if in this case I will need or not the neutral wiring fot the heating system going out of the controller (shelly 1pm).
Thanks in advance!
I have been searching for a similar solution. The difference for me is that I am building a new house and I can install something hidden in the fuse box without any visible boxes/switches/thermostats in rooms.
Main criteria for my controller would be:
• Integrated energy meter
• PID controller
• MOSFET instead of relay
• Standalone Wi-Fi device (no gateways or hubs required).
• Plug and play without any complicated configurations.
I have not found anything that would match my criteria.
Since I work in the electronics field I came to the conclusion that I should develop such a controller by myself and open-source it to help fellows like me.
The main thing that I cannot decide on is the form of such a controller: something in a fuse box or something like sonoff/shelly switches hidden in an old thermostat place.
Do you have a possibility to mount the controller in your fuse box on a DIN rail? Would you prefer this method? How many different areas you are planning to cover?
If the control unit is in the fuse box, the thermometer must be remote. Then it won’t be self-contained and compact, but a distributed solution.
I tend to think it’s better if it’s all in one place and autonomous (resilient to failures elsewhere) if possible.
May I ask why you prefer mosfet?
I think the Shelly PM devices are pretty close to optimal, only that they require a separate block for adding a thermometer.
You are right about the thermometer but if you are installing floor heating in a new house you can lay the thermometer to the fuse box too. Of course, then you should do some NTC compensation because of wire length or use a digital thermometer.
I was thinking to install the controller directly above the floor but still haven’t come up with an idea of how to hide it. A case on the wall that looks like a thermostat doesn’t look like a solution to me. Hiding it forever in the drywall also looks like a stupid idea.
I would prefer a MOSFET because I am planning to use the same module to control the heater under the road to the garage in winter. With PWM and PID I can easily maintain a stable temperature without killing the relay.
Right. Din mountable shelly would otherwise be good, but as far as I know they don’t support additional sensors. You probably need to look at other brands. Having all in the fuse box would be pretty cool!
