Best Wifi enabled thermostat

[S93]

Hi guys,

I've got an old boiler (Worcester 28CDI) and the timer/programmer is knackered, so I'm thinking of replacing it with a smart/wifi enabled thermostat/timer gizmo.

I believe this model of boiler only supports 240v thermostats which rules out the Nest etc?

Does anyone have any experience with the high-current smart thermostats, I believe the Honeywell Lyric T6 would be compatible, can anyone confirm? ( https://www.amazon.co.uk/dp/B01M9ATDY7/ref=sspa_dk...)


Cheers

[Church of Noise]

I've been looking into smart thermostats for a while but it seems quite a few of these which 'support' OpenTherm actually just work as regular 'on-off' systems, and have a system to translate this to the OpenTherm protocol. This includes Evohome, Tado ...
Seems like a waste not to fully use the possibilities of the system.

Is theere any system that fully uses modulation beyond say a Lyric T6?

[dickymint]

S93 said:

Hi guys,

I've got an old boiler (Worcester 28CDI) and the timer/programmer is knackered, so I'm thinking of replacing it with a smart/wifi enabled thermostat/timer gizmo.

I believe this model of boiler only supports 240v thermostats which rules out the Nest etc?

Does anyone have any experience with the high-current smart thermostats, I believe the Honeywell Lyric T6 would be compatible, can anyone confirm? ( https://www.amazon.co.uk/dp/B01M9ATDY7/ref=sspa_dk...)


Cheers

I'd check with Tado for compatibility using their 240v bridge at the boiler and wifi stat.

[shady lee]

Church of Noise said:

I've been looking into smart thermostats for a while but it seems quite a few of these which 'support' OpenTherm actually just work as regular 'on-off' systems, and have a system to translate this to the OpenTherm protocol. This includes Evohome, Tado ...
Seems like a waste not to fully use the possibilities of the system.

Is theere any system that fully uses modulation beyond say a Lyric T6?

From what I've been reading the only true opentherm is when you have the boilers own branded controls.

There's a thread on automated home forums about a guy with a ideal boiler and a Honeywell lyric t6 not modulating down properly.

To cut a long thread down it basically sums up that ideal can get the boiler circa 30c modulation in segregation but with the Honeywell t6 they cant do it.

And it goes back and forth between manufacturers blaming each other in emails.

Edited by shady lee on Sunday 5th November 16:49

[mjb1]

dickymint said:

S93 said:

Hi guys,

I've got an old boiler (Worcester 28CDI) and the timer/programmer is knackered, so I'm thinking of replacing it with a smart/wifi enabled thermostat/timer gizmo.

I believe this model of boiler only supports 240v thermostats which rules out the Nest etc?

Does anyone have any experience with the high-current smart thermostats, I believe the Honeywell Lyric T6 would be compatible, can anyone confirm? ( https://www.amazon.co.uk/dp/B01M9ATDY7/ref=sspa_dk...)


Cheers

I'd check with Tado for compatibility using their 240v bridge at the boiler and wifi stat, works fine.

Tado will do it, wired directly to the stat. Presumably the extension kit will also do it, but without needing wiring to the stat.

I have a Worcester 28CDI, and it's wired direct into the Tado stat with no extension kit.

ETA: I think Nest will also work with mains voltage, their 'heatlink' device is wired into the boiler (works like the Tado extension kit, which is optional for Tado, but compulsory for Nest - it comes with the stat kit anyway).

Edited by mjb1 on Sunday 5th November 22:14

[SMar]

I've been running TADO since they ran the Beta program, for nearly 4 years now, so still running Version 1. Its worked flawlessly.

[shady lee]

Drayton wiser still out of stock at screwfix, nearly 3 weeks now for the trvs and controler kit.

One does wonder, over popular and no way to meet demand...or errors and issues so internal recall on all made products not shipped.

Scrabbling around trying to solve a buggy system after release.

[ST-Alex]

Church of Noise said:

I've been looking into smart thermostats for a while but it seems quite a few of these which 'support' OpenTherm actually just work as regular 'on-off' systems, and have a system to translate this to the OpenTherm protocol. This includes Evohome, Tado ...
Seems like a waste not to fully use the possibilities of the system.

Is theere any system that fully uses modulation beyond say a Lyric T6?

Hadn't even heard of OpenTherm. I've had a Ideal Vogue 40KW installed recently and running Tado. Now to see if the Tado is wired into the stat or into the OpenTherm. I'm guessing it'll be into the Stat as my Tado app makes no mention of OpenTherm but the Tado website states "you will also be able to control these settings via tado° once it is connected to your boiler". I'll report back once I've had a look!!!

[B17NNS]

shady lee said:

One does wonder, over popular and no way to meet demand...or errors and issues so internal recall on.

Sadly probably the latter. How a company with a name renowned for heating control could make such a catastrophic error in this day and age is beyond me. They're hardly a Kickstarter now are they.

I don't know about TRV's. It's more like TVR. Let your customers do your testing for you.

[Jobbo]

In contrast, I bought a Drayton Wiser kit and fitted it myself. Initially the furthest radiator thermostats seemed to be out of range, but I took them off the radiators, brought them closer to the Heat Hub and paired them and they've been fine since and haven't lost connection.

Been thoroughly happy with it. Screwfix may not have stock but Amazon do (though don't buy rad thermostats there at £45), and www.cityplumbing.co.uk do too, including TRVs at the usual £35 Screwfix price.

[dickymint]

recalluk said:

xyz123 said:

Sorry one more question for tado users. Is geofencing adjustable. I have two work places so if I am heading from one to another rather than from one to home will tado start heating the house? Ta.

You can adjust the size of the field it uses to consider you home. Its a circle around your house.

Just a heads up: Tados lastest update now allows you to set a different address for “Home” this could be useful for xyz123’s problem :thumbup”

[shady lee]

Jobbo said:

In contrast, I bought a Drayton Wiser kit and fitted it myself. Initially the furthest radiator thermostats seemed to be out of range, but I took them off the radiators, brought them closer to the Heat Hub and paired them and they've been fine since and haven't lost connection.

Been thoroughly happy with it. Screwfix may not have stock but Amazon do (though don't buy rad thermostats there at £45), and www.cityplumbing.co.uk do too, including TRVs at the usual £35 Screwfix price.

How long have you had it installed?

I did the same thing with bringing the devices to the heat hub r and re configuration etc.

Seemed to work then fine for a week or so, then one night I checked the baby's room and it was down to 13c with both trv and thermostat lost signal. I wouldn't mind but the range extender they sent was 3ft away.

Tried to reset and ended up turning the hub off and on trying. At 4am I gave up and deemed it unreliable.

Might just have been my kit,my house...who knows.
There's 2 more reviews on screwfix from people having the exact same issues as me...I pulled the plug and took it back.

In contrast, I've been running hive for the past year and it's been faultless.

Anyway....a parcel arrived this morning.

BOOOYYYAAA!

[Jobbo]

shady lee said:

Jobbo said:

In contrast, I bought a Drayton Wiser kit and fitted it myself. Initially the furthest radiator thermostats seemed to be out of range, but I took them off the radiators, brought them closer to the Heat Hub and paired them and they've been fine since and haven't lost connection.

Been thoroughly happy with it. Screwfix may not have stock but Amazon do (though don't buy rad thermostats there at £45), and www.cityplumbing.co.uk do too, including TRVs at the usual £35 Screwfix price.

How long have you had it installed?

I did the same thing with bringing the devices to the heat hub r and re configuration etc.

Seemed to work then fine for a week or so, then one night I checked the baby's room and it was down to 13c with both trv and thermostat lost signal. I wouldn't mind but the range extender they sent was 3ft away.

Nearly a week

I'm going to give it a bit longer before I draw any proper conclusions - but I don't think there's anything fundamentally wrong with the hardware and the software just seems to work for me so far. Evohome has been around for quite a while and from what I've read is a pain to install, so at c. twice the price I was always looking for alternatives. My motive is not to save money anyway but to make the house as comfortable as possible to live with (not too hot, not too cold in every room).

[brman]

Jobbo said:

early a week

I'm going to give it a bit longer before I draw any proper conclusions - but I don't think there's anything fundamentally wrong with the hardware and the software just seems to work for me so far. Evohome has been around for quite a while and from what I've read is a pain to install, so at c. twice the price I was always looking for alternatives. My motive is not to save money anyway but to make the house as comfortable as possible to live with (not too hot, not too cold in every room).

I've read this a few times but am not sure what the issue actually is? Anyone care to comment?

Although, fwiw, I would rather a painful install and a reliable system than an easy install that doesn't work 100%.

[Jobbo]

Googling the Evohome you get the same sort of results as with the Wiser - plenty of issues with it crashing or losing connection to the TRVs. I hope Shady Lee finds it works for him; and I hope Wiser works for me because it's a pain when you have problems.

[shady lee]

Jobbo said:

early a week

).

Ah, hope it's fine for you. Fingers crossed mate.

[Jobbo]

Cheers - and do let me know how easy it is to install Evohome, just in case I take the same path as you...

[dmsims]

For Honeywell install:

https://theevohomeshop.co.uk/content/11-evo-help

[ST-Alex]

So I've had a look. The electrician ran a 4 four cable from the Tado to somewhere near the boiler. As you can see in the photos there is a black and brown wire plugged into the Tado NO and COM as I'd expect. I then had a look in the boiler. Strangely there is only one black wire plugged into the Room Stat.
I have a feeling the four core runs from the Tado to the back of the boiler isolation switch. Then another four core cable runs the power from the switch to the boiler (using the forth black wire for the Room Stat input on the boiler.) I have emailed the photos to Tado to see what they come back with. I can run a new 2 core cable from the back of the switch into the boiler if needed.

The Tado and boiler seem to have been functioning fine with the current setup but don't think it would work in the OpenTherm.

Anyone on here any advice? Thanks in advance.

[essayer]

Looks like the 240v connection needs to be removed and isolated and a 2-core run from the Tado opentherm outputs (presume that's the + -) and into the corresponding inputs on the boiler

To be totally sure, get a copy of the Tado Opentherm installer manual (not available to the public?) and your boiler manual to confirm