Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members

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  • ally153
    Automated Home Jr Member
    • Nov 2014
    • 30

    Originally posted by CT1 View Post
    Sorry do not use accuweather. Checked today Tuesday 22 Dec at 10am. Dull, overcast, not much wind temperature stable.

    Outside thermometer 10 deg C

    Evotouch 6 deg C

    EvoHome App 7 deg C

    Amazon Alexa 6 deg C

    IPhone 8 deg C (Weather.com?)

    Accuweather 6 deg C

    BBC weather 8 deg C

    Don’t know if any of that helps.
    Thanks CT1, some users have reported in the past that they are seeing Evo's temperature lagging what other online sources are saying by several hours, this means you could be seeing a morning temperature at mid-day for instance.

    Originally posted by paulockenden View Post
    The outside temp problems are caused by delays, and are most noticeable when the days are warm and the nights cold, during the evening and morning.

    This time of year when the temperature is pretty much the same day and night the problems won't be showing in the same way.
    Agreed, the effects will be minimal at this time of the year. Were you one of the users who noticed delays during the summer? Do you think you're still seeing delay? If so could you send me a private message with your MAC address (I realise you might have at the time!). I'll forward the information to our connected team to investigate.

    Comment

    • paulockenden
      Automated Home Legend
      • Apr 2015
      • 1719

      Like I said Ally, it's hard to know whether there's still delays when thee's no big morning ramp up in temps or evening ramp down. I think we'll need to wait until Spring before the problem is noticeable.

      Comment

      • CT1
        Automated Home Guru
        • Apr 2016
        • 189

        While delay undoubtedly plays a part, I am not convinced that it is the only issue. My observations (not just those posted) would suggest that local micro climates could also play a part. Not a problem for me as I have no expectation of using this feature, my posts of data are just to, hopefully, help ally. Will be interested to see how this, and other new features, are received once the firmware is rolled out.

        Comment

        • G4RHL
          Automated Home Legend
          • Jan 2015
          • 1580

          For those of you running the beta software does it enable better control over the custom menu? I rarely use mine but this morning I decided to warm the house up a little sooner than it normally would be and was reminded of the frustration that I cannot set the override in the custom menu to a specific time other than the next day.

          Comment

          • DBMandrake
            Automated Home Legend
            • Sep 2014
            • 2361

            Originally posted by G4RHL View Post
            For those of you running the beta software does it enable better control over the custom menu? I rarely use mine but this morning I decided to warm the house up a little sooner than it normally would be and was reminded of the frustration that I cannot set the override in the custom menu to a specific time other than the next day.
            Still the same I'm afraid.

            A long press of custom gives you a choice of which day to override until (ending at midnight) but nothing more fine grained than that.

            Comment

            • mtmcgavock
              Automated Home Legend
              • Mar 2017
              • 507

              I actually found Cold Weather Boost quite useful yesterday - I've set it to a differential of 18oc. When temps here plummeted here yesterday to below 0oc i've got a couple of rooms that feel cooler. So i've applied it to them zones and it seems to be working well so far. Will continue to monitor but the Outdoor temp on the Evohome seemed more consistent that it had previously with my own monitors - maybe as the outdoor temperature wasn't changing much though.

              Comment

              • robbietobbie
                Automated Home Lurker
                • Oct 2020
                • 8

                I have a question. I have an Intergas SRE set to heat only as that is how my plumber wired it (S plan with valve on hot water, valve on upstairs, nothing but HR92s downstairs). I'm following advice and put the max flow on the boiler at 65 so that it condenses properly as evohome seemed to ramp it up to 80 meaning the boiler never actually condensed properly.
                As a result it takes AGES for the hot water to heat up - and of course it rarely gets past 56 as the max water temp is 65. Any suggestions on how I could get the hot water heated at 80 but the CH heated at 65 or less?

                Comment

                • kevinsmart
                  Automated Home Ninja
                  • Sep 2018
                  • 257

                  Originally posted by robbietobbie View Post
                  I have a question. I have an Intergas SRE set to heat only as that is how my plumber wired it (S plan with valve on hot water, valve on upstairs, nothing but HR92s downstairs). I'm following advice and put the max flow on the boiler at 65 so that it condenses properly as evohome seemed to ramp it up to 80 meaning the boiler never actually condensed properly.
                  As a result it takes AGES for the hot water to heat up - and of course it rarely gets past 56 as the max water temp is 65. Any suggestions on how I could get the hot water heated at 80 but the CH heated at 65 or less?
                  You need an X-Plan setup:
                  If your customers are accustomed to or want the immediate convenience of superfast hot water, let me introduce you to the Intergas X-Plan. With X-Plan you can adjust the ‘electrical output control’ during a set demand so, during a demand from an external control,


                  Basically this uses a BDR91 to short out a cylinder sensor NTC when DHW is off. When DHW is on, the Intergas boiler will switch to DHW heating mode, if the NTC temperature is below DHW setting e.g. 55C, with a higher flow temperature used e.g. 70C.

                  If you have a Normally Open valve on your heating circuit you will use the hot water kit BDR91 to close it to prioritise DHW heating.

                  Similar concept:
                  Last edited by kevinsmart; 1 January 2021, 01:18 PM.

                  Comment

                  • bruce_miranda
                    Automated Home Legend
                    • Jul 2014
                    • 2307

                    This is one of the short comings of Evohome and even with OT, it does not differentiate between CH and HW heats. Some boiler manufacturers have the ability to deal with this with their proprietary kit (e.g. Vaillant).
                    A work around that I use, I have an eBUS interface for my Vaillant boiler. I detect when Evohome is calling for HW and then raise the boiler's max to 70C only during that time, and then drop it back to 55C at other times.
                    But you need to time your HW reheat to be at the start of your CH schedules or when you know that all the CH demand has been satisfied, otherwise you could cause overshoots with the sudden inrush of extra hot water to the radiators. Ofcourse if you have zone valves on the CH circuit, you could employ HW priority and deal with that

                    Comment

                    • robbietobbie
                      Automated Home Lurker
                      • Oct 2020
                      • 8

                      Thank you for the suggestions. I can't quite believe with all this technology that evohome can't tell the boiler to change the temperature between HW and CH. Is that what it does every second of the day with opentherm? @kevinsmart - thank you for your suggestion I will see if I can do that.

                      Comment

                      • kevinsmart
                        Automated Home Ninja
                        • Sep 2018
                        • 257

                        Originally posted by robbietobbie View Post
                        Thank you for the suggestions. I can't quite believe with all this technology that evohome can't tell the boiler to change the temperature between HW and CH. Is that what it does every second of the day with opentherm? @kevinsmart - thank you for your suggestion I will see if I can do that.
                        I think the problem is actually with Intergas here. Evohome does distinguish via OpenTherm messages between DHW and CH mode requests.

                        Comment

                        • bruce_miranda
                          Automated Home Legend
                          • Jul 2014
                          • 2307

                          @kevinsmart any examples showing Evohome OT providing the difference between a CH and DHW modes? Mind you, I am looking at the eBUS side of my boiler because that is all my boiler can natively understand. But it does have an OT to eBUS interface which is how I am able to connect the Evohome OT Bridge to my Vaillant boiler.

                          Comment

                          • kevinsmart
                            Automated Home Ninja
                            • Sep 2018
                            • 257

                            Originally posted by bruce_miranda View Post
                            @kevinsmart any examples showing Evohome OT providing the difference between a CH and DHW modes? Mind you, I am looking at the eBUS side of my boiler because that is all my boiler can natively understand. But it does have an OT to eBUS interface which is how I am able to connect the Evohome OT Bridge to my Vaillant boiler.
                            In my previous house, with Intergas and my weather compensation setup running on the OGTW, I was able to disable weather compensation on an OpenTherm DHW demand.

                            You can also view the heating mode in the OpenTherm monitor.

                            In my current house I have a Vokera boiler which apparently is able to distinguish between OpenTherm DHW and CH requests, and respond to a read request for their corresponding max flow temperatures. I’ll confirm when my installation is complete.

                            Comment

                            • zxdavb
                              Automated Home Guru
                              • Jan 2018
                              • 106

                              I have an Intergas that uses a heat curve for CH, but ramps up to 85C for stored DHW (that is, it heats the cylinder at 85C, until the cylinder reaches 45C) - not controlled by evohome, but deffo controlled by an on/off controller.

                              Comment

                              • oxygen
                                Automated Home Jr Member
                                • Sep 2018
                                • 40

                                So we do confirm that the requests/data pulls from the controller to the OT Gateway seems to have changed with the new firmware, but on a very specific scenario:
                                The loss of OT data observed by the HGI80 occurs ONLY after a full reboot of the controller.
                                I had all OT data, with the new firmware until this morning (I did a full reboot of the controller to confirm the findings of Bruce Miranda)

                                We are loosing:
                                - Boiler Temp & Return Temp, DHW Temp, Control Setpoint, CH Pressure, OEM Codes, ...
                                We only keep:
                                - Relative Modulation Level, Boiler values & Boiler OT values

                                So obviously, something is happening with the new firmware on the way the OT data is requested

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