Hi Dave, I assume you're in the UK? Just out of curiosity, can you give me examples of the ZigBee TRV's . I have a few ideas going round in my head
So, I think the standard intro on this thread is... I'm a bit late to this party but...
I've got two separate properties I'm trying to setup with HE. I need to focus on the more complicated one first. I'm sure for some on this forum it's not complicated, but I've found myself very quickly getting to the "I don't know what to do here" stage. I'm wondering if I explain the setup, someone might have a similar enough scenario that they can suggest "do it like this", or encourage me that I'm on the right track, or steer me off the track I'm on.
Large property, it's sort of like a holiday home, but is a place where 8 different partners occasionally stay while doing training. Intermittent/infrequent usage, sometimes busy, sometimes not occupied for weeks, though people pop in and out without staying overnight.
8 bedrooms/individual units.
1 large communal area and kitchen.
Due to an incident with a lot of unwelcome water, half the property has been redone. This gave us an opportunity to move away from electric-only heating. Not a moment too soon! The setup is now:
3 units with wet UFH
Communal areas with UFH
All UFH is controlled by Heatmiser Neo.
5 units with wet radiators
No thermostat has been fitted to govern this side of it. (!) This was mainly because there was no obvious place to put a thermostat - multiple rooms needing discrete heating. Where does one place it?
Rads now have Moes TRVs, linked to HE, using the Tuya Wall Mounted Thermostat Driver,
courtesy of @kkossev , thank you! It controls the Moes TRVs well, out of the box.
I've also got Zigbee temperature sensors in the various rooms.
There are two gas boilers, one for heating, one for hot water. Two 500 litre high pressure storage tanks.
The current boiler programmer, only just put in by the contractors, is a British Gas DCP programmer. It is literally the worst programmer I've ever used, and is going to be replaced. I think they found it in a bin and thought they'd save a bit of cash.
I'm thinking a sensible route is to put in a couple of Heatmiser Neostat V2 programmers. They will then be controllable by the Heatmiser app, if the whole HE side of thing stops due to me being the only person who can deal with it. And the Heatmiser can be integrated, to an extent, with the HE.
So, the way the building is used is why I think Hubitat could be the best solution.
Firstly, there are 8 partners, all with husbands and wives and children, so there are a lot of potential points of failure if things like turning heating off is to be manual. In the past, it's been common for lights and heating to be left on for weeks unnecessarily.
But people do need to be able to turn heating on, remotely and when at the property.
I'd then have some motion sensors to detect presence and turn things off if not around.
I have tried the built in app Thermostat Controller, but then looked at Thermostat Scheduler as maybe more appropriate. Both of these have a lot of variables and settings that I think aren't relevant, and quickly get complicated. So I've not had a lot of success!
We would want heating to turn off with a lack of presence, but not turn on with presence: sometimes people just come in to get things, for 10 minutes, so we wouldn't want the whole system warming up in that instance. But they'd sometimes to arrive and pick stuff up, then go out for a number of hours but want the heating to go on.
You see? It all gets hard! Does anyone have any guidance here, please?
For reference, these are the TRVs:
https://www.aliexpress.com/item/1005002431040917.html?spm=a2g0o.productlist.0.0.43a9617cfJ6zqc&algo_pvid=94a5c8e3-8790-485b-b78d-aa3271337af5&algo_exp_id=94a5c8e3-8790-485b-b78d-aa3271337af5-0&pdp_ext_f={"sku_id"%3A"12000020631025326"}&pdp_pi=-1%3B21.25%3B-1%3B-1%40salePrice%3BGBP%3Bsearch-mainSearch
this is what i use for my heating, basicly i have a zigbee relay on the boiler conection where a traditional room thermostat would be, the boiler is set to run all the time the boiler design is when the relay is open the boiler doesn't run. The relay is in a project box with a led push button on to manually toggle on off or can use HE.
Then i have this rule to control the TRV's, the living room (qty 2 TRV) and kitchen temperature setting value is a global variable tile i have on dashboards
I then have this rule to turn the boiler (zigbee relay on the thermostat connections) off via mode (but you could use inactivity)
my kitchen is wet UF heating and i have a trv on that
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@bagpuss Ive just ordered one of the TRV's and took a leap of faith on it reliability. I need half a dozen of these but thought I'd proof test one initially. How long have you used yours for? Also I have UFH and Heatmiser controls which I Integrate with @cjcharles amazing Heatmiser driver.
My heating is on the usual timers but when mode changes to away, then the heating turns off. Maybe you could set your motion sensors to. IF NO motion for X time, then set mode to "heating off" or something similar.
I have a rule which says, if all motion sensors inactive for 30 mins after 11pm the. Set mode to Night. I assume you could do something similar with your heating
Thank you Mark - I'll have a go at replicating that!
Hi Stuey,
I can't really pass long term judgment on their reliability, as I've not used them for long enough, and I haven't fully got the system set up "properly", so I can't give them a gold seal of approval for not letting me down. That said... while I've been tinkering, they've kind of done what I want, and have continued to work. Fingers crossed.
Thanks for the suggestion on away mode - I've got quite a lot of thinking and programming to do.
Keep tinkering and share the wisdom. I'm far from a HE pro and welcome anyone's knowledge 
Hi guys, what a piece of Genius. Just one query if you can help @kkossev could you enable the driver to work with decimal places. It really doesn't like temperatures such as 21.5 or 22.5 etc.
Please please, you'll make me a happy man with excellent WAF
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Awesome, much appreciated and thanks in advance for your support 
Hi @Bagpuss do you have a UK instruction manual for your Moe's TRV's. I can't find one online and I'm getting frustrated.Cheers in adavnce
I just posted this request guys. I guess it ties in with this thread if anyone can help?
Unfortunately, BRT-100 Zigbee interface does not allow to set the heatingSetpoint with 0.5 precision. 0.5 resolution can be set only manually from the TRV touch screen controls. I double-checked again today, Zigbee commands allow only integer values to be sent to the device.
That's very unfortunate. I had a similar issues with my Heatmiser Neostats with @cjcharles driver. However this was resolved upon a request to CJCharles. Whey are WIFI stats rather then ZigBee. Such a shame but thanks for exploring this
Heatmiser is actually ZigBee too, but a super obfuscated weird version of it with a LAN controller that actually does the talking to the thermostats.
All my Trv's have 0.5 settings, send me link to driver
This is the link to the driver latest version, but there is nothing that can be done on driver level, BRT-100 eTRV heatingSetpoint command requires the temperature as integer number (not multiplied by 10 or by 2 as some other TRVs).
Blimey Stuey, apologies! Haven't been looking at this for a few weeks, too much other stuff going on. Sorry I wasn't on hand to help with the frustration.
I imagine the moment has passed, but in case it hasn't and in case it's useful for anyone else, here's a scan of the instructions that came in the boxes I got. (Slightly cropped, I now see: let me know if something critical is missing!)
That's very kind of you. Brilliant and appreciated!
Hi,
Just a minor bit of feedback on this.
After months of not having been touched, we’ve made a small bit of progress on one site.
The dumb non smart programmer has been replaced with Heatmiser neostats, so I visited to start tinkering.
Pretty much all the Sonoff sensors had fallen off the Zigbee network. A couple had flat batteries after 8 months, others needed adding again via add device. A bit annoying. Having to add devices by physically pressing buttons means a site visit.
However, all the Moes TRVs (as above) were still attached and working as required. I had feared that they would be the weakest link. Fingers crossed they continue to behave well as I inch forwards with setup.
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