WiFi Electric Underfloor Heating - KETOTEK Smart Thermostat 

Thank you, and I'm glad it's been of use.

Glad it was useful. Setting it up in HA is as easy as you make it :) You can use the normal cloud-based Tuya approach and there's no special effort required because it just appears as a climate entity. But, I much prefer LocalTuya (hence the DPs that I've published to give people a head start), but LocalTuya is not simple!

@@SpeakToTheGeekTech I have mine set up in LocalTuya. I'm still quite new to HA, it would be good to see how you have your automations set up to control it.

It's pretty straightforward to control using climate.* service calls. This is my automation that runs three times a week during the off-peak hours when the heating mode is on, just to warm the conservatory a little bit and prevent mould: alias: "Heating: Conservatory UFH At Night" description: "" trigger: - platform: time at: input_datetime.off_peak_energy_start id: "on" condition: - condition: time weekday: - fri - tue - sun - condition: not conditions: - condition: state entity_id: climate.controller state: "off" alias: Heating is NOT off action: - delay: hours: 1 minutes: 0 seconds: 0 milliseconds: 0 - service: climate.turn_on data: {} target: entity_id: climate.conservatory_ufh - delay: hours: 0 minutes: 0 seconds: 5 milliseconds: 0 - service: climate.set_temperature data: temperature: 10 target: entity_id: climate.conservatory_ufh - delay: hours: 2 minutes: 0 seconds: 0 milliseconds: 0 - service: climate.turn_off data: {} target: entity_id: climate.conservatory_ufh mode: single

@@SpeakToTheGeekTech That's perfect! Thanks, it really helps

The Smart Life app is an unbranded version of the Tuya app that most companies like to promote the use of instead. Basically if you pick one or the other and stick with it you'll be fine! It's when you mix and match between them that it becomes complicated :)

@@SpeakToTheGeekTech Thanks for the reply. I have bought another Ketotek stat to run the water based central heating system, replacing a JG one. Hopefully heading for total remote management. Just looking at a way to replace another JG (Salus) stat for a wet UHF area but that may have to be proprietary as it links to a Salus control unit.

Thanks!

You're welcome

It must be the same type as supplied with the thermostat

I'll need to refer you to your local qualified electrician to help answer that. I swapped like-for-like connections so it was very straightforward for me, but I'm not qualified to provide you with electrical advice - I hope you understand, sorry.

No it shouldn't, it's specifically for electric underfloor heating because it has a high power relay and a floor temperature probe. There are many other options out there for smart thermostats that work with normal boilers though, and Ketotek also do a variation of this one for controlling a boiler which is supplying wet underfloor heating. amzn.to/47CB9YZ

It’s not showing anything that interesting or useful I promise. This was more a review and overview video, not an installation tutorial as I’m not qualified to show electrical work

You can only add it to one user account, but once added you can create a 'home' and other users can join that home to control those devices.

Still going strong for me so yes. Just make sure your UFH elements are within the current limit for the thermostat (16A) and that your existing floor sensor has the same resistance as the one supplied by Ketotek (unless you are replacing the floor sensor with the supplied one) - my sensor is cemented under tiles so that was quite important to check!

Drayton wiser is basically just a more modern equivalent of my Evohome controls. When I replace my boiler with an ASHP I will use the pump’s own native controls at least to start with and get rid of Evohome (I won’t need radiator based zones then because it will reduce efficiency not improve it). This Ketotek controller is very good value just to control this one standalone zone that won’t be part of the thermal envelope once the heat pump is installed.

I've put the instruction manual up on my web site, see pages 11 & 12 (PDF pages 7 & 8) on how to select setting option AE which factory resets it: www.speaktothegeek.co.uk/2023/02/wifi-electric-underfloor-heating-ketotek-smart-thermostat/

It's rated for 16A, so it is designed for a 3kW load maximum (assuming a drop down to 220v with rough maths!).

I think you've reached the point where I'd need to suggest you get the advice of a qualified electrocution, sorry! My personal rule is if I'm not 100% certain what I'm doing, get in a guy who does know!

Thanks for the input. Sorry I was slow, I never got a notification from RU-vid I had a comment

Turns out the only difference is my dumb thermostat has 1 additional connection that receives the ground wire from the power and the ground wire from the floor mat together to ground them inside the thermostat. How is the ground handled in your setup if there is no connection or screw meant to connect the ground?

My UFH mats don't have a ground, just live and neutral

You are in luck, I had a good rummage around in my garage and found it! I've scanned it in and put a PDF up on my web site for you: www.speaktothegeek.co.uk/2023/02/wifi-electric-underfloor-heating-ketotek-smart-thermostat/

I wouldn't know that sorry, it says it's specifically for underfloor heating so I'd suggest probably not - there are many other thermostats (such as ones by Heatmiser) which are designed to switch high power heaters.

It's not tricky to do that - the user guide is on my web site if you don't have that still (www.speaktothegeek.co.uk/2023/02/wifi-electric-underfloor-heating-ketotek-smart-thermostat/) and look at page 10. There are literally 4 steps listed in there! I don't enable the schedule personally - the reason I got a smart one is so as I can create automations in Home Assistant to control it that way, but there's no reason why you can't set it with schedules the old-fashioned way too.

At 06:04 I tell you, you hold down 'set' and 'ok'. It's also in the instructions provided with the thermostat. Not sure what else you might mean?