Professional Installers - Glasgow Area
Is there a list of approved installers for Tado X?
I'm looking for a heating engineer in the Glasgow area who approved Tado X installer. Looking to get confirmation on compatibility on new Baxi 800 system 2 boiler with OpenTherm control on the Tado X (S-Plan setup - 2 heating zones + unvented hot water).
Have already contacted Tado support which have been NO help - they can't even find details of the Baxi boiler!?
Comments
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Why not get a nice Baxi expert and ask about weather compensation, hot water priority and X Plan. I expect they have smart controls too. That’s what I’d call a heating engineer.
I think the Venn diagram of heating engineers and Tado X experts would be a vacuum in the overlap area.
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Not all heating engineers have experience of Tado installs unfortunately.
I'm looking to get a new boiler replacement along with Tado controls. But i would want them both to operate successfully in digital control (Opentherm) across my existing S-plan setup. I've been asking Tado support and been told that the Baxi 800 System 2 boiler will not work under Openthem - because its a system boiler?
I'm not sure this advice is correct? Baxi 800 System 2 boiler definitely supports Opentherm; and likewise their Tado X kit advertises Opentherm support as well? -
Wireless Smart Thermostat X - Starter Kit incl. Programmer with Hot Wa – tado° Shop
Hence why i'm trying to get valid proof that someone in this community has the same setup and works! or find a suitable engineer that knows both inside and out to advice, quote and install?
i.e.
Hello,
Since your boiler, Baxi 800 System 2 is a system boiler, the digital control is not possible.
Only relay- switch on/off is possible.
Kind regards,
Petra
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I don’t think you have understood what I wrote.
In terms of Tado, no they won’t control anything using BUS technology and also give relay control needed for zone valves. For BUS read OT in Tado X world.
What they will control is a combi boiler. In theory you could have a 4 pipe system or an internal diverter valve and just says it’s a combi. Tado just want to speak to one point of control for OT.
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Darn….so regardless of the either the tado or boiler supporting opentherm, the fact is that it won't work in S-Plan arrangement with multiple heat zones via zone valves. The tado thermostat must have a direct connection to the boiler to facilitate opentherm, and not an indirect connection via zone valve. Right?
If so, looks like its relay control.
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As mentioned, Tado doesn’t support that mix. It’s nothing to do with connection via zone valves, as that’s not how zone valves work.
There are better options, as detailed earlier. Relay control would be a waste of a half decent boiler.
Employing someone that understands heating systems would be a good suggestion.
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I don't why Tado doesn't clearly communicate this on their manual documentation and especially their website / product descriptions. I'm certainly many people (like me) will be uninformed of such limitations. Any typical person will read the description of Tado kits supporting Opentherm; and similar for their chosen boiler (Opentherm certified).
However in reality, under the hood this clearly isn't the case. In honesty i feel there's a case of mis-advertising and selling here? I don't see why they can't make the clear that certain boilers/configurations will not work even thought Opentherm certified.
I've looked at other controllers and just seems to be a lack of support on s-plan; or things are just not quite mature enough at the time? So probably not much choose but to revert to relay for simplicity. I'm only looking at Tado due to its integration with homey automation platform (i've got heavy investment on that side within the home). While other controller platforms lack automation integration.
Previously you mentioned weather compensation - i'm pretty certain for the Baxi there is external sensor (ifos) accessories that you can fit on the flue to help adjust temp flow based on external temp….not quite opentherm but some kind of efficiency. I assume this is what you mean by the weather compensation..
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This just highlights the potential pitfalls of the general public making decisions regarding heating systems. The boiler, the emitters, the control system and the control method - none stand in isolation. Add in the premises, of course.
It’s easy for some people to fixated on the control and assume ‘more is better’; it’s not always.
Likewise modulation. Sometimes it’s better to leave these decisions to the boiler, but provide it decent inputs. And what’s the heat loss of the premises as we get 10 or 15 degrees above design temperature outside? Can the boiler even modulate that low?
That’s before we add in external hot water storage.
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After further searching, it would appear that EPH have interesting controls that seems to do it all?
They seem to provide true multi-zone Opentherm support i.e. S-Plan Plus (up to 6 zones?).
Also priority on DHW, and there also an app based control - requiring a separate gateway.
However, the thermostat devices look rather dated and no homey automation integration.
CP4 V2 - OpenTherm® Programmable RF Thermostat - EPH Controls
CP4-HW-OT - OpenTherm® Programmable Cylinder Thermostat - EPH Controls
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