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Evohome firmware 02.00.19.31 Beta & OpenTherm

Hello

Excellent news that the Evohome is being updated. I've signed up to the Beta trial but I'm wondering if any of the new features will be of benefit to users of the OpenTherm Bridge (& an OpenTherm compatible boiler)?

Many thanks, Pete

Evohome & Opentherm

Hello

My setup:

ATAG iC Economiser Plus27 combi. (installed Sept 2018)
Evohome & OpenTherm Bridge
HR92 rad valves in 5 zones. Plenty of bypass rads.
Nodo-Shop OpenTherrm Gateway
Home-Assistant monitoring all of the above, running on RaspiPi

All works pretty well, bar some fun with the DHW ECO mode - solved now & probably best saved for another thread.

I have a question regarding the Evohome implementation of OpenTherm. The graph below shows OpenTherm Setpoint against time, as an output from the OpenTherm Gateway, placed between the Opentherm Bridge & boiler. Apologies, the picture looks rather small in the preview. I think you can click for a larger view. There is no DHW demand on the boiler at this time.

evo.jpg

I've noticed that at times of reducing/reduced CH demand Evohome steps the setpoint down to 10deg and then after ~1 mins steps it back up to the reduced setpoint. Purple arrows in the graph above. This looks more like TPI control than OpenTherm. Has anyone else noticed this & could you comment on whether this is as expected, as designed or otherwise? This is before the 02.00.19.31 Beta firmware update btw.

Many thanks.
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EvoHome Beta 02.00.19.31 - Confirmed bugs

Let's use this thread to report confirmed bugs.

I'll start.

Heating Off now stops any zone from being manually overridden. So when you turn up a zone, nothing happens. However the set point on the zone is changed and the valve pin opens. Because Heating is Off, that manually changed Setpoint is never updated back down to 5C (Off). Basically nothing happens.
But when the HW comes on, this manually overridden zone has its valve pin still sitting Open. And gets hot!
The easiest solution would be for the controller to reset all zones to 5C at periodic intervals. That way if a zone is manually overridden and the set point goes back to 5C, then there is some feedback in the zone to show the controller has ignored that setting. It will also stop that zone from heating up when the HW kicks in.
Ofcourse this bug will only affect those that don't have a motorised valve on the CH loop, assuming all radiators have a HR valve on them.

Manual override triggering by itself

Last night I was awake in the middle of the night and could hear the pipes creaking. Usually all my heating and hot water is off overnight so I checked in the app and could see that my conservatory was at a manual override 16 degrees set point. This is the temperature it normally runs through the day but the set point changes it to a low (5 degree) overnight in the evening. I cancelled from the app and the heating turned off as expected.

This has happened once before and wonder what might cause it?

Honeywell HR92 LCD reversal

Hi all, I'm new here and found the forum whilst researching the Evohome system.

I've recently bought a Evohome system with 17 HR92UK units, matching Valencia TRV bodies, and the hot water kit.
All the control side of stuff I've already installed including the wall mount kit for the touchscreen, and wiring in the two BDR91 for the heating and hot water zone valves (S-plan system).

So far all good. I've quite a few radiators without TRVs at all, and the ones that are there are looking a bit crusty so have decided to replace them all. I also have the matching lockshield valves but may keep the existing ones if they look ok to minimise disruption and potential for causing extra leaks (but probably lock them all open and use the internal balancing function in the Valencia TRV bodies).
4 of the rads are towel rads with the TRVs mounted horizontally, and after a bit of research I discovered there is a european version of the HR92 with the display reversed, which would be ideal.

The supplier would take 4 units back so that I can source the euro versions elsewhere, however I wondered if the LCD could be flipped? I see this question has been asked several times with the answer simply being no, but it does seem to me that the LCD panel could be reversed within the housing if it can be disassembled.
So the question is, has anyone disassembled the HR92 to the point where the LCD housing is separated, to see if the panel can be reversed 180 degrees? It looks like the LCD housing can be prised apart, but I don't want to break anything by forcing it if there is a special technique for disassembly.
I'm an electronics engineer and comfortable working down to component level, but breaking plastic is not what I want to do!
Yes the easy answer is to send them back and get 4 x euro versions, but the quicker method would be to reverse the LCD panel if possible!

Ben

Hr92 position

Hi all,

Any idea how these measure the temperature effectively being right next to the radiator?

I noticed there is an elongated oval hole on the opposite side to the screen/buttons - I’m guessing this is close to where it’s temperature sensor is. So what is the best way to orient the HR92? I guess it was designed to have the screen facing out, but is that the best way?

Connecting to stand alone kit. such as a TP-Link Wi-Fi bulb

Hi All,

Running W10 on a Windows 10 LTSC (Long-Term Servicing Channel) version. (old LTSB)

For a house that has every ceiling light controlled automatically. We've still got a few lamps that are stand alone and the missus has put on timers to come on at dusk, these are needing to be changed every few months. So this got me thinking if I could bridge in a non-cloud way to this lighting from the Idratek PC. I see that there is some Philips hue lighting support, but seeing that they're just about to brick the old hub, not sure if Cortex will work with the new one so find this all rather bizarre.

But was possibly thinking of going a little bit more divergent. I already have several PLC's controlling fish pond and a couple of new ones soon for the cat flap (rfid reading) and water harvesting. So was thinking of using some software such as openHAB. This will run on a Pi, it knows xPL to talk with Cortex, modbus to talk to the PLC's and PV array also the TP-Link KL60 E27 Wi-Fi Bulb that I've got in mind. This can be added onto the network without having to get the cloud involved as there is a way to use the app without logging onto the central server to add the lamp to the local wi-fi.

additionally later on I can add amplifier control and other things.

Any ideas please?

Thanks

Richard

Lithe Audio In ceiling Wifi Speakers

Hi does any one have any experience with the Lithe Audio in ceiling WiFi speakers, as the look like they could be a great alternative to Sonos.

An Alternative Perspective

I often read the forum and, having a technical background, I find many of the posts interesting and informative. However I have no need or desire to implement most of the ideas because they do not fit with my requirements.

I have a well insulated A rated home with an A rated boiler, solar PV, solar thermal HW and a diverter to use excess solar to heat the HW. I also have 2 air con/air source heat pump units. We are at home most days and have no set schedule for when any room will be in use and times and durations of periods away from home are quite random. To get the maximum benefit from this I often need to operate things manually. I have not found any advantage from optimisation and would not anticipate any benefit from the Hot and Cold weather settings and the HW priority will be seriously detrimental for my system. My well placed and accurate external temperature sensor often shows significant variation from the temperatures indicated by EvoHome. Hence I have not asked to be part of the Beta test programme.

What I do find essential is having individual control of each zone. Before EvoHome I used TRVs and a room thermostat but could not get enough control of each room. EvoHome solved this fundermental problem.

The improvements that would benefit me are.

1. Change eco mode to offset mode and allow offsets of say +/- 5 degrees.

2. Allow individual zones to be switched Off individually (ie set to 5 degrees)

2. Please, please DO NOT make HW priority mandatory.

3. Improve battery management for the controller.

And on the hardware

4. Improve the reliability of the battery contacts for all components so that they do not need to be “bent” to achieve reliable contact. None of my other battery operated devices require this.

Replacing HR92 sensor with a Y87RF

One of my zones has 2 rads with HR92s but we've recently added some humongously thick curtains near the valves so I've put a Y87RF on the wall. I reset the Y87 binding, removed the "remote sensor" setting for the zone on the controller and bound the Y87 as a remote sensor. It seems to work but when the HR92 setting is adjusted (by turning the control on the top of it) the controller calls for heat. I'd expected the HR92 control to be redundant so I'm a bit confused. Is this "working as intended" or should I delete the zone and start again, binding the sensor before the valves?

Air Source Heat Pump install

We have just got rid of our old oil boiler and replaced it with a Panasonic ASHP.
There is a buffer tank fo the heating which comprises Honeywell UFH HCCR80 and three radiators all with Honeywell actuactors. The radiators are fed via a pump which is controlled by a BDR acting as a boiler relay. The UHF has its own pump which comes on when any UHF requires heat. The problem is that when the UFH requires heat and the radiators do not, both pumps switch on. I am guessing this is because the Evohome controller sends a request for heat for an UFH zone and this switches the pump on on the radiator circuit. Is there anyway to tell the Evohome not to request the boiler for an UHF zone heat request? or is there any other way to prevent both pumps from working for just UFH requests?
Cheers

Hr92 v other temperature source

I think the picture says it all. No doubt this has been covered before but i cannot find an exact match.

any ideas? i appreciate there could be a difference but nearly 3 degrees seems extreme.

temp.jpg
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Evohome - Heating Off and Manual Override

Hi.

Config
- EvoHome wireless controller
- Y Plan (3 port Valve) System.
- 2 x BDR92 (Heating/Hot Water + wireless thermostat).
- HR92 Thermostats across house.

We have seen issues in our house where heating is set to off, but manual settings on radiators turn heating on. What is the expected behaviour of how the HR92s can operate when heating schedule set to Off?
- Should radiators allow manual override and turn heating on?
- How long will the manual override take effect for?
- Should radiators which have been manually set show up in Mobile App. When I looked it was still marked as off.

Cheers

Hr92 Low Battery

Hello

I have a HR92 on a Bathroom Rad the Room is not used at the moment and the Temp setpt is set to 13c permanent room never gets below 19 anyway Airing Cupboard is in the same room

Every morning when I check Evohome Screen there is a low battery fault on this HR92 when I check Fault log it shows Fault logged at 05.53 i can clear it and all good but it comes back again at exactly the same time the next day I have replaced the batteries etc

Any ideas please

thx
mylesm

Face Plates - anyone got any spare?

So after reading the other day on another thread about the controller being loose on the wall plate, I thought that mines never fallen off. Well today it happened whilst decorating, slightly knocked it and bang! on the floor :(

So the white front facias has cracked slightly. Has anyone got a spare white one that they don't use, or bought the set of replacement colours (preferably Graphite or Black) and haven't used a certain colour they might be willing to sell?

Loxone Virtual Output XML Template Library

While the Loxone system is not aimed at automating home cinemas, it is able to control external AV components via IP using its VIRTUAL OUTPUT facility.

However the choice of built in templates is poor, for example its surprising that there's no Sony TV template. After some research today there's great IP control available for Sony's and even just adding the ability to switch off the TVs in the house with the triple click Night Mode thing would be useful.

I did find a Sony TV template online here but it would be much better for these to be included with Config, or at least for Loxone to offer the facility to start building a database of these 'drivers'. I'm sure partners would be willing to upload and share the ones they've created in return for access to those from others.

Here's the template choice currently in v10.3.11.27 (including the Sony TV item imported from the link above)...

Image may be NSFW.
Clik here to view.

What setting for Summer?

How do people set their controllers in the Summer with the current firmware?

  • If it's set "off" then it's necessary to go round the house checking for, and resetting, any manual overrides (which are useful on a chilly evening, or for a towel rad when having a shower).
  • Alternatively, every zone could be re-programmed to set 5 degrees at midnight and 02:00 (for example) to automagically reset any overrides (but it's a pain to have to reset every zone, and then to do it again in the Autumn).
  • I've not investigated the "custom" setting - is it any use for this?

Mystery blank item in evohome app

Hello,

What’s the mystery blank item in the evohome app? I’m guessing it’s the BDR91, but why doesn’t it have a name and why is it even shown there?
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Using Openweather api to get weather info into the Loxone mini Miniserver

As we are in lockdown I have been doing some playing with my miniserver.
My apartment has a Miniserver Go.
I have been experimenting with getting weather information into the system. I know Loxone have their own weather service and there is a Loxberry plugin. But I wanted a solution that didn't require extra bits of kit or a paid subscription.
So I decided to use openweathermap.org and sign up for a free account.
Once you have signed up you are given an API key which you need when creating API's you can have more than one key if you want.

So you enter this into your web browser
http://api.openweathermap.org/data/2...ndon,uk&APPID=YOUR_API_KEY&units=metric

This gives you something like this
{"coord":{"lon":-0.13,"lat":51.51},"weather":[{"id":803,"main":"Clouds","description":"broken clouds","icon":"04d"}],"base":"stations","main":{"temp":18.68,"feels_lik e":16.05,"temp_min":17.22,"temp_max":20,"pressure" :1006,"humidity":45},"visibility":10000,"wind":{"s peed":2.6,"deg":210},"clouds":{"all":80},"dt":1588 001847,"sys":{"type":1,"id":1414,"country":"GB","s unrise":1587962349,"sunset":1588015007},"timezone" :3600,"id":2643743,"name":"London","cod":200}

The annoying thing is that the time is in Linux UTC format, if you add &mode=xml to the end of the API you get normal time and date for sunrise etc, but I can't get it to work in Loxone at the moment.

To get for example today's temperature
1. You set up a virtual HTTP input in Loxone config. In the URL field put http://api.openweathermap.org/data/2...ndon,uk&APPID=YOUR_API_KEY&units=metric
2. Then for each bit of weather info you then need to define a virtual HTTP input command
3. In the command recognition field just enter "temp":\v
4. Then for the units field you enter <v.1>ºC

For wind direction its a little more complex
1. Under the same virtual HTTP input then follow step 2 above
2. In the command recognition field enter "wind"\s21\v . This finds the characters "wind" then jumps 21 characters forward to get wind direction. I tried using the command "deg"\v but it didn't work.
4. In the units enter <v>º

And now the tricky bit
To get Wind direction as Southerly etc you need to use a Status block and have the Wind direction as an input.
Then set up a few rules to get the compass directions.
AI1 >= 0 AI1 < 35 then in Status Text just enter Northerly
And so on
Here is what I have so far
loxone weather.jpg

The Temperature Warning uses another Status block and will show a graphical warning if it gets too cold or too hot.
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Heating Off - HR92 Behaviour

Hi

I have been testing using "heating off" with HR92s configured with local override disabled to stop them being turned on manually.

Today because it was cold we decided to turn the heating on but after an hour nearly all of the HR92s were in the off position still.

So I had to disable local override on the control for each HR92 and then manually turn the dial on each to get them back up and running. They are now correctly following the schedule after I set economy mode off and back to normal mode.

Questions.
- Is this a known issue?
- I realised as part of this if the HR92s are prevented from local over-ride you can do nothing with them including rebinding, etc. If the controller is reset in future or fails, does that mean all linked HR92s are stuck in blocked mode or is there still a way to manually reset them?
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